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Hot Coco Vol. 3 No. 1 - June 1985 - TRS

1. 38 00 Mich Res add 4 2 00 shipping handiing if charge Overseas ADD 10 to subscription and 1 00 to Single issues 16K extended required Some prograrns require 32K and or disk Over 3000 satisfied custorners Back issues available from July 82 PERSONAL CHECKS WELCOME over 280 programs to choose from Also availablefor Commodore 64 e az CoCo Devices Box 677 Seabrook TX 77586 713 474 3232 Specify CoCo or CoCo2 Circle Reader Service card 475 NEQU 76 HOT CoCo June 1985 T amp D Subscription Software Visa Mastercard P O BOX 256 C HOLLAND MI 49423 616 396 7577 almost identical within the two DOSes The only differences come into play when you are reconfiguring the program s default param eters You change Radio Shack DOS param eters by editing Basic program lines in OS 9 you rewrite a default parameters file Once you have learned its commands T S Edit is a very effective and versatile text edi tor Becoming comfortable with the pro gram s commands however can be somewhat difficult T S Edit uses a series of one and two key commands One difficulty with following the command sequences is that the program requires you to use upper and lowercase letters that have different meanings This can cause some confusion You might find yo
2. Send for a free copy of our Software Catalogue Using NPV IRR asss sree ese The figures produced by the NPV IRR pro gram are only as reliable as the data you en ter To get an accurate picture of the Circle 456 on Reader Service card advisability of an investment project you must carefully review all the am you use BB DAISY WHE E L New Smith Corona L 1000 Because the NPV IRR model incorporates only actual money receipts and payments True letter Quality printer for less than the cost of an noncash income and expenditure should not e enter into computations So if the yearly office typewriter Priced 500 less than other popular profits accruing from a warehouse are esti daisy wheel printers mated this figure cannot be used for com puting the returns in the NPV model Like SALE PRICE wise depreciation not a cash expense has to be added back to the profits to arrive at the cash benefits All sunk costs should also be excluded from the analysis If for example the inves FEATURES tors in the warehouse had commissioned a Friction teed research study costing 30 000 it would be incorrect to consider this cost in the calcula 15 cps 120 tions Even though the research is a cash in Changeable daisy wheels vestment the 30 000 has already been paid and so has no bearing on assessing the pro Parallel or serial interface posal since money
3. 6 A uo OUR PRICE 95 00 110 00 285 00 155 00 CALL 225 85 00 LIST PRICE 39 95 25 9995 199 95 OUR PRICE 34 00 85 00 169 00 275 00 215 00 39900 Allpricesandotters maybe changed or withdrawn without notice Advertisad prices arecesh prices For shipping add 2 minimum shipping charga 83 00 C O D eccepted 34 00chargapercertonon 0 Cellforturther Information M C Vies AX add 3 60 HOT CoCo June 1985 PERRY COMPUTERS e 137 NORTH MAIN STREET e PERRY MI 48872 Circle Reader Service card 506 DYNAGALG CoCo s Best amp Fastest Spreadsheet System ACCLAIMED BY THE EXPERTS DYNACALC is my choice for a CoCo spreadsheet Dan Downard RAINBOW September 1984 Eat your heart out Lotus 1 2 3 Scott Norman HOT CoCo October 1984 NOW Built in Features e 51 x 24 Display with Lower Case O N LY Super fast Smart Screen Refresh Auto Repeat Keyboard Driver 9 9 9 5 Keysaver TM repeats last command x times Disk Operating System works just like ROM DOS Easy communication with BASIC DOS programs Two way communications with PRO COLOR FILE x Enhanced x e Outputs to ASCII Word Processors like Telewriter 64 e Fast 16 Digit Arithmetic with Scientific Functions f e Summation Mean and Standard Deviation Functions RAINBOW Logical Functions with String amp Numeric Comparison CERTIFICATION String locate command to navigate large works
4. Memory The Ultimate Upgrade Pie Charts Fast Easy Effective Gemini Printer Magic Create Unique Typography Money Invest Wisely Using Your CoCo x x 12067 0 PLUS The Latest on Communications x Education and Product Developments A FULL LINE OF QUALITY MODEMS MED Lp ee ee oe NM ELO LLL A A Choose an affordable Radio Shack modem that Open the Door to an Electronic Village Adding a telephone modem to your computer takes you to the door of a new age in information transfer to an electronic village where the latest news most re cent stock prices farm futures scholarly materials and more are always at your fingertips And there s never been a bet ter time than now to use your Radio Shack or Tandy com puter as the key to this new age With our full line of modems you can choose the one right for your home or business and get on line in a hurry With one of our modems and Videotex software for your com puter you can use community bulletin boards to set up an elec tronic garage sale or chat with a neighbor Send E Mail or join an information service to re search a report read the news and more There are even ser vices that let you shop without leaving your house But what ever you decide a Radio Shack mod
5. OCTAVE 2 HOTE A DFFSET 0 00 REQUEHCY 220 00 HERTZ i amm um SELECT HOTE SHARP FLAT SELECT OCTAVE ENTER PERCENT OFFSET F SOUND ON OFF ENTER EXACT FREQUENCY gt 320 Actual Display e Tunes like a Strobotuner at a fraction of the cost Both generates pitch and measures pitch Real Time strobe pattern displayed on screen Full 7 octave range including sharps amp flats e Accurate to 003 Extremely friendly user interface e ROM pack works with any Color Computer e Accepts standard microphone plug Percent offset and direct frequency selection available Optional piano tuning kit available professional tuning wrench 4 mutes 1 felt muting strip and How Send or call for more information Circle Reader Service card 55 RAINBOW Strobotuner is a trademark of CG Conn Limited CERTIFICATION 77 with internal oscillator timing SEAL Mail To Real Time Specialties Inc U 2 6384 Crane Road emm Ypsilanti Michigan 48197 orcall 313 662 6671 Shipping add 2 UPS ground 5 air or Canada a Sales Tax Michigan residents add 4 Sales Tax CCT 1 CoCoTuner Module amp Manual 89 2 Microphone with 6 cord 14 CCT 3 Piano Tuning Kit wrench rnutes felt booklet 27 Total MASTERCARD
6. gt Co amp 5 m G WW gt gt Oo m tz 2 G CJ gt CO Co 25 Ug Oo amp Co fto O gt to ODD t gt C t5 m June 1985 CoCo 71 Continued from p 39 made It uses high quality parts and its work manship is first rate The circuit board is made of a heavy duty material The pins that connect it to the original socket look more like nails than pins and so are unlikely to cre ate a faulty connection Installing the Dual DOS Card is easy Follow the instructions that come with it Take the four screws out of your J amp M Disk Controller s case and set the top aside Remove the chip marked U6 andplugit into theDual DOSCard Plug your other ROM or EPROM into the remaining socket on Dual DOS Then plugthe new card into the empty socket left by the U6 chip on the controller board The final touch is in stalling the switch on the cover of the con troller s case For some configurations you have to cut a trace and solder a jumper on the underside of the board This is not a difficult procedure but it requires tools and confidence Dual DOS Card s instructions show you where to scrape through the trace with a sharp blade You can use any soldering iron and thin sol der to make the jumper Documentation Dual DOS s instructions including dia grams of the card
7. of SpectroSylems of Miami Floridaand if fully supportedby the author The HDS version of ADOS supports 2 drives 40 track 6ms Irk to Irk drives only either Singie Sided or Double Sided The ADOS package comes complete with original documentation and diskette com SpectroSyslems and can be installed in our Orve Controller Board at purchase time for no additional charge ADOS HDS 24 pin ROM 50 useable in all drive controllers the market ADOS HDS 28 pin ROM 40 useable in the HOS 2nd generation board only Keytronics Keyboard KB500 The Fantastic Keytronic Keyboard is now being manufactured only for Hard Drive Specialist It is the only keyboard for the Color Computer known on the market that does noi use membrane switches The 500 uses a capacitance foam Switch This lype of switch will nevergive keyboard bounce and last much longer than all other types The K8500 also the keyboard Ihat will fit atl versions of tne color computer weather 1 isa A B C D E F ET 100 or COCO IIB One keyboard fits all with out risk of getting the wrong version and there i no need Io do any modifications to your case Additional features include a higher spring force on the break and clear key to reduce the possibility o a disastrous key stroke sculptured keys low profile pips on homerowkeys The PF function keycomes with documentation and a sample program The Key Ironics HDS keyboard ir
8. 5 51 158 04 1338 PS 1 2 T2V31L33O3BEBEBEBEBE BEBEBE P 2 T2V31L18g03ABCDE FGABCDEGFABCDEFGABCDEFGABCDEFGAB CDEFGAB 134 5 5 0 31 5005 5 5 5 135 MAIN PROGRAM 1368 INSTRUCTIONS amp LEVEL 1378 POKE CLS FOR T 487 T O 231 STEP 32 PRINT T D E F ENSE II PLAY V18L2405G FOR U 8 TO 63 NEXT U IF T 23 l THEN PRINT eT NEXT T 1388 PLAY 15 P RINT8262 INSTRUCTIONS Y N 1398 AS INKEYS IF AS Y THEN 2 798 ELSE IF 5 THEN 1399 1488 POKE CLS PMODE 1 1 PCLS 1418 PRINT 35 CHOOSE SKILL LEVE L 1 5 1428 L ASC INKEYS 48 IF L lt 1 OR L gt 5 THEN 1428 1438 CITYS SCOR HIT VAL BONU S CITYS BONUS THRESHOLD SCORE COUNT MISL X POS amp ANGL SCREEN MODE COLRST OFST 48 HOT CoCo June 1985 144 FOR T TO 5 GOSUB 186g N EXT T GOSUB 1899 1458 S 8 28 5 1 S 2 78 5 3 g 4 9 VA 1g Cl 9 CC 3 SC 1 CT 6 1468 FOR TO 2 GOSUB 1838 N EXT T MD 1 CM 4 SCREEN 1 1478 SHOW LVL SCOR BNS CTYS 1480 LINE 8 8 254 19 PRESET BF DRAW C3BM92 19 NS S 4 NS SES 1499 DRAW BM5 19 NS L BM228 19 NS C1 NS CH C4 1500 OF MISSILE LOOP 1510 IF INKEYS Q THEN 2449 ELS IF RND 59 RND 58 28 THEN 298 g 154g MS USR4 IF MS THEN1619 155g IF USR1 L THEN 1519 1568 SS USR3 g IF SS THEN 1589 ELSE IF VA T
9. inquiries welcome Quantity of Each DEFT Pascal DEFT Bench DEFT Systems inc Now Available DEFT Extra DEFT Pascal Workbench 4 Damascus Centre Method of Payment check Check Enclosed Damascus MD 20872 By Express Order VISA O Master Card COD Account Number DEA At Your Local Card Expiration Date Deve es Radio Shack Store D ante Orders and Sales Information 1 800 992 DEFT E D Eg Sp BB 2 29960 pef ee State p Technical Assistance 1 301 253 1 300 All orders are shipped UPS within 24 hours of receipt d for shipping and handling Maryland Now Available in Canadian Radio Shack Stores residents add 5 for State Sales Tax add 2 00 for COD _ DEFT is a Trademark of DEFT Systema Inc Circle Reader Service card 4243 ir Di JWETT tA o a i HOT CoCo Cover photo by Ed Judice FA Y LH gr amm 72 RTICLES 40 64K Modification Revisited Richard E Esposito and 59 Pie In The Sky Terry Rlegel Raymond W Rowe Create simple pie charts Everything you need to know about memory upgrades 62 Investment Analysis Dev Chakravarty 44 Missile Defense Jim McDowell and Shawn Diehl Project the outcome of your investments Protect your cities from destruction 66 Fabulous Fonts Peter H Stoloff 45 HOT CoCo s Pull Out Program Listings Generate custom typography 57
10. More Learning Fun for Your Kids Vocabulary Tutor 1 Give your chil dren a head start in school Start building their vocabulary at home with an exciting word and description match ing game they ll love to play 95 For grades 3 5 26 2568 8 Vocabulary Tutor 2 More practice match ing words and definitions and placing words in appropriate sen tences Great for helping young students get ahead For grades 3 5 26 2569 895 Color Math Make learning fun Supplement your children s study with prob lems in addition and subtraction For ages 6 14 1126 3201 1995 Circle Reader Service card 44 Radie Shaek The Technology Store A DIVISION OF TANDV CORPORATION Find out more about Radio Shack s Color Computer Send for a free catalog Mail To Radio Shack 85 A 974 300 One Tandy Center Fort Worth Texas 76102 am a City State Zip Address Telephone Prices y at Radio Shack Computer Centers and at partici pating Radio Shack stores and dea ers Dis ney Mickey Mouse and Donald Duck are registered trademarks of Walt Disney Productions Facemaker Kids on Keys KIndercomp Fraction Fever and Spin naker are registered trademarks of Spinnaker Inc Product News bu J Scot Finnie Child s Play Dr Words Eagle The Adventure Builder ChessD The Dallas Quest Simon Information printed in the P
11. Unsurpassed e TETTE Excellent da c see re Above Average Dida Hasina Sh qve S Acceptable RS Needs Improvement doc c ME Unsatisfactory Caught Up in Star Trap by Richard Ramella sound documentation graphics playability 1 OVERALL RATING 4 75 Games W I was a child I saw a carom board game advertised as 100 games in one It cost 10 which works out to only 10 cents a game I sent for it and was not disap pointed It had checkers chess tiddly winks carom billiards puzzles shuffleboard and more And it was based on little more than 80 game pieces and my imagination Star Trap s spirit of inventiveness evoked the memory of that carom board game when I sat down at the CoCo with my children to play it Star Trap has some important basic features including a maze moving pieces and sound keyed to game events The most interesting feature of this program however is that it gives you numerous games in one Players can change play levels maze size speed among other parameters and design their own mazes I highly recommend the game for its intended audience ages 7 and up Radio Shack calls Star Trap a coopera tive strategy game It is a product of Radio Shack and the Children s Computer Work shop an offshoot of the Children s Television Workshop producers of Sesame Street The game is not based on a violent premise The object
12. 33 70 Saguaro Software 36 506 Computer Systems Foreign Dealer 92 160 Saguaro Software 15 Gentegeor s 61 HOT CoCo Subscriptions 9 Smith Corona 19 507 Computer Systems Instant CoCo 64 212 50 2 3 doe dete its 82 Instant CoCo Best of 84 80 Software Support 25 223 Computer Systems Toll Free 39 69 299 Spectral Associates 39 Consultants 39 University Micros 13 299 SunlockSystems 65 75 CoColDevicesa 76 91 Incentive Software 74 236 T amp D Subscription 76 536 Cybertron 92 y Mark Data Products 37 386 TCE Programs 38 69 243 DeftSystems 4 196 MicroWorks 23 131 THINC Tech Hardware 92 397 Delker Electronics 56 337 Nibble Notch Computer 93 True Data Products 28 29 209 Dorsett Educational Products sons n 69 80 92 Systems 85 200 Osicom 11 175 White House Computer 77 Johnson 83 214 14 75 216 EA ae 20 124 Perry Computers 60 Coming Next Month Advertising Offices 603 924 7138 or 800 441 4403 The advertisers listed in bold print are new advertisers to HOT CoCo this issue This advertiser prefers to be contacted directly For further information from our advertisers please use the
13. Letters to the Editor Send your letters to Letters to the Editor HOT CoCo 80 Pine St Peterborough NH 03458 Computers Not For Art Iwas thoroughly disgusted with the article by Paul Statt Portrait of the CoCo Artist in the February 1985 issue of HOT CoCo p 28 I would like to know why drawing is so im possible for Ana Landa without her com puter Doesn t she have access to pencil and paper The elements that make up a good work are patience and skill It may not be easy to correct mistakes on paper but you can sketch lightly first and then darken in Furthermore you can t get as much feeling as you really should when you use a com puter to draw Drawing and sketching shouldn t be made easy because they aren t Eric White has a few of his facts straight but covering up mistakes isn t important It s using mistakes to enhance a picture that makes a drawing more interesting Picasso for example left his mistakes in and it didn t hurt his works Frankly it doesn t matter if you make mistakes and let them show And a word to Whitesmith you can al ready make enlargement reduction rota tion or section transfers by hand and do it better than the computer can You can t add as much detail by computer as you can by hand so you have more flexibility on paper 105 also not true that a water color has to come out right the first time With pen and paper you can always change your mistakes into new and better p
14. Shipping amp Card Exp Name Address City State Zip Signature 32 HOT CoCo June 1985 are performing similar display operations at the time the transfer is made But in truth even this is not enough to guarantee success A few combinations of comercial programs work well together on the ME 128 64 and others just don t seem to get along I was disappointed for example to discover that Telewriter and DynaCalc won t work together Even though both programs usea 51 column by 24 line display I can find no way to leave the spread sheet and get into the word processsor s edit mode However Chapple promises that he will explain in an upcoming issue of his newsletter how to pass variables between two Basic programs in the ME 128 64 s separate banks of RAM The tech nique involves reconfiguring the PIA chips for output a state in which they retain data that is POKEd into them That should make the ME 128 64 more valuable to the do it yourself programmer DSL s 128K the Easy Way DSL s memory expander board is called 128K the Easy Way The first step in the installation of this board is removing the CoCo s SAM chip and reinstalling it on a small printed circuit board that plugs into the original SAM socket Then you remove the original 64K RAMs and reinstall them piggyback on the new set just asfor the Dynamic Electronics kit Two clip on leads con nect the new SAM board to a pair of
15. winning lottery numbers 79 95 complete w Manual BROCHURE AVAILABLE Send check money order VISA Mastercharge Include expiration date to Prof Jones TT 1940 W State St Boise ID 83702 TELEPHONE 208 342 6939 VISA TERMS FREE SHIPPING ALL SOFTWARE Add 6 00 hard ware 6 00 C O D UPS Blue 6 00 o Country 9 00 ID Residents 4 3 weeks personal checks Cash price only add 2 Visa MC Prices subject to cnange 99 95 with Lotto IBM APPLE TRS 80 C 64 AND OTHERS 26 HOT CoCo June 1985 The Computer emm an extra step to flnd this There are a good many selection commands for pulling rec ords out of the file however it s easy for me to build a separate file consisting of say just the reviews I wrote for HOT CoCo in 1984 You can specify as many as a staggering 36 selection criteria at once linked with AND and OR functions The program s mathematical abilities are limited to finding the totals of selected col umns when you print a report not much when compared to PCF but adequate for many needs By the way both of these pro grams make it easy to specify the video screen instead of the printer as the output device so you can get a quick preview of a report It is also simple to get a printout of all the information for any single record with out having todefine a separate report format Elite File A program of surprising fiexibility a
16. lt lt 2 GOSUB 189 g C C L IF C lt THEN 1 B Cl Cl 1 2268 GOTO 1480 227 ALIEN 2288 PAC MAN 2298 AS Q R2E2L4U2R6U2L6U2R8 U2L8U2R6U2L6U2R4H2L4ND19G2D14H2U 6NU4NL2NG2 AS f 1 BR8U2 2300 AS 1 BD8U2R2E2L6U2R16D2 L6F2R2ND2U6L120U2R12H2L8E2R4 5 1 1 2 BD6U2 RETURN 231 STARSHIP 232 AS 8 8 BDAU2NL2NR2UL6F2ND 8BL4ND8BD6L4NU4ND2R12ND2NU4 AS g 1 BL6U2 233 AS 1 8 U2NL2NR2U16F2ND8BL 4ND8G2L2NU4ND2R12ND2NU4 5 1 1 2 BD2BL6D2 RETURN 2348 FLYING SAUCER 2358 AS g UANLANRAU2NLB8NRB8U2 NL8NR8U2NLANR4 AS 9 1 2 BU2U2 236 5 1 0 0 0 04 5 1 1 2 BD12D2 RETURN 2379 POD 2388 AS g 2 NL2E2NL6E2NL19U2NL 18H2NL6H2NE4L2NHA4BDIRBLA4G6FG6BRIE E6H12 AS f 1 2 BD2R2 2398 AS 1 8 2 BL6NL2E2NL6E2NL18U 2NLlgH2NL6H2NL2E2R2BL8L2BD12L4D8 BR18U8L4H6 A 1 1 2 R2 RETURN 248g ROBOT 241 AS g ULBg G2NDI14DANLGNRIE BE4ND14D2 5 1 2 242 AS 1 9 ULPG2D1PNG4BR4NF4U lgBR4D4L12U4BR4BD2 AS 1 1 R2 RETURN 243 TEN SCORE ROUTINE 2448 POKE 5 5 9 5 1 19 S 2 1gg S 3 1E3 S 4 1F4 FSS STRS FS FSS LEFTS ggggg lg LEN FSS MIDS FSS 2 245g LOOP FIND POS IN TOP TEN 2468 FOR T 9g 9 STEP 9 IF VA L MIDS SLS T 4 5 FS THEN 2479 ELSE NEXT T SLS FSS LEFTS SLS 81 GOTO 2489 247 IF T 9g THEN GOSUB 2599 GO TO 2568 ELSE SLS LEFTS LEFTS SLS T FSS MIDS SL T 1 99 2488 GOSUB
17. 79 PRINT PROBABLY WORTH INVESTIN G IN 85 INPUT PRESS Y TO CONTINUE M 199 ZERO g 102 5 0 119 FOR U 1 TO 15 12g A U ZERO 13g PV U ZERO 14g CV U ZERO 158 REM 200 PRINT THE PROGRAM HANDLES ASH FLOWS 21 PRINT FOR ONLY 15 YEARS ENT ER A 228 PRINT NUMBER BETWEEN 1 AND 15 230 PRINT REPRESENTING NUMBER O F YEARS 248 PRINT FOR WHICH YOU CAN EST IMATE 245 PRINT CASH FLOWS 259 INPUT YEAR 255 INPUT INITIAL CASH INVESTME NT INITIAL 268 FOR X 1 TO YEAR 278 PRINT ENTER CASH FLOW FOR Y 399 INPUT A X 319 NEXT X 328 INPUT ENTER DISCOUNT RATE O R MARKET RATE OF INTEREST R 330 R 100 34g TEMP 1 R 35g REM 388 REM BEGIN CALCULATIONS 499 SUM 41g FOR X 1 TO YEAR 428 GOSUB 2000 439 CV X A X PV X 440 SUM SUM CV X 458 NEXT X 46 REM 478 SUM INITIAL 488 PRINT NET PRESENT VALUE IS 499 INPUT PRESS Y TO SEE NPV MPUTATION N 598 IF NS Y THEN GOSUB 3999 558 PRINT NOW PROCEED TO IRR CA LCULATION 552 INPUT PRESS Y TO CONTINUE cs 553 IF 5 554 554 CLS f 568 PRINT INTERNAL RATE OF RETUR N IRR 565 PRINT GIVES THE MINIMUM DISC OUNTING 578 PRINT RATE THAT YIELDS A PO SITIVE 575 PRINT NPV 576 PRINT WAITITHE PROGRAM IS W ORKING 698 REM CALCULATION OF IRR 619 XYZ 1 39 628 TEMP XYZ 630 REM 64 FOR 0 1 TO 39 658 SUM ZERO 6698 TEMP
18. 8 Disks Family Income Organizer Disk Colorcal Super Astrology 37K Music Reader Phonics 1 0r 2 Ony tocn Prereader 1 2 amp 3 Spelling Tom Mix Software Toke 10 Off These Prices Through 5 20 85 Sailor Mon Worlds O1 Fight 32k Chombers 32k Warehouse Mutants Dracoman 32K Quix 32K e1ec TRON Space Shuttle 32k SR 71 32K Toucnstone 37K Cu Ber 32k Buzzard 52K 24 75 Vocab Mgmt 3175 Saguaro Software See Our Other Ad In This Issue NEW 24 HOUR ORDER LINE 602 795 4159 7334 E BEVERLY DRIVE TUCSON AZ 85710 A2 Residenis Add 7 Tax e Add 1 00 Shipping COD 200 additional Dealer Inquiries Invited Some Quantities Limited AUTHORS ASK ABOUT OUR ROYALTY PROGRAM Demon 64k 26 75 dtosm Gropn Music Adventure Game Decoder 1175 Super Disk Utiity Disk 32K 23 75 Asto Cast 32k 23 75 Family 19 75 Super Bowling Secretory 32k 19 75 Stress valuator 49 75 Weather 32K 49 75 Weather watch 19 75 Philatelic Mgmt 23 75 Disk Oniy 32K Inspector Ciueseau Bond Yield Moster Graghics Gieat USA Prereader Presidents of ne US 16k Fiymg Tigers Syntax Stones Siliy Syntax Radio System Design Co Co Callgiopher 3 Staigrat 32k 2275 14 75 22 75 18 75 18 75 26 75 16 75 18 75 46 75 37 75 18 75 18 75 Mark Data Trekboer 32K Tuts Tomb 32K Time Fighter Gioxxons Shenanigans 32x Sea Search 32K Calixto t
19. D Please sign me up for a one year subscription beginning with this month s issue at 99 97 Please send me copies of this month s issue at 11 47 each Please send me copies of the Best of 84 at 16 47 each Price includes postage and handling Foreign Air Mail please add an Save yourself some money Sub scribe to instant CoCo Each month you ll get 8 12 of the best ready to run programs from the pages of HOT CoCo The best action packed games hours of challenge and entertainment The best business school home and hobby programs The best utilities ease routine tasks increase your computer s capabilities Increase your software library Order a full 12 month subscription and we ll give you one FREE program on each monthly cassette Simply mail in the coupon below or call TOLL FREE 1 800 258 5473 In New Hamp shire call 1 924 9471 VISA MASTERCARD and AMERICAN EXPRESS welcome With the new instant CoCo we ll deal you the BEST programs plus a great deal more Check Enclosed O MC VISA O AE Card Exp Date 1 Signature Name Address City State Zip Please allow 4 6 weeks for delivery 1 8506 addiuonal 45 per cassette or 25 per subscription US funds drawn on id US banks ONLY instant CoCo 80 Pine Street Peterborough NH 03458 Circle 25 on Reader Service card fs FOUR STAR SOFTWARE CoCo has t
20. When you want to practice AND press break to stop the program Then make the follow ing line changes to Listing 1 30 10 AND 210 PRINT 97 AND 390 IFA lt gt AND H2 GOTO420 Enter and run this new listing and save a copy totape if you want To advance to prac tice with binary addition repeat the above procedure this time making these line changes 30 PRINT Q28 BINARY ADDITION 40 0 128 1 2 RND 128 1 210 PRINT 99 390 IFA lt gt H2 GOTO420 For the problems in hexadecimal addition type in Listing 2 and run it The program will accept inputs other than hexadecimal so be careful lil See program ltsting on page 52 Address correspondence to Frank Tipps 1837 Cartlen Drive Placentia CA 92670 2 GI GIG GLY AGG j 2 Illustratton by Peter Bono A Rb O t 005002 wv D gt to m t J J gt O C t5 m tg O J gt OC c to t D O J Table 2 Hexadecimal Addition tO JU gt O t9 O tg gt o Oo amp to O tg O tJ gt O to tz O tz gt O gt oo e 5
21. 14 6805 6502 6809 OS 9 2 80 FLEX OBJECT ONLY versions EACH 50 COCO FLEX amp COCO OS 9 6502 TO 6809 ASSEMBLER TRANSLATOR 75 FLEX 85 OS 9 translates 6502 programs to 6809 noting inexact conversions 6800 TO 6809 amp 6809 PIC TRANSLATORS 50 FLEX 75 OS 9 translates 6800 programs to 6809 6809 programs to PIC FULL SCREEN FLEX TSC XBASIC PROGRAMS with complete cursor control DISPLAY GENERATOR DOCUMENTOR MAILING LIST SYSTEM INVENTORY WITH MRP TABULA RASA SPREADSHEET 50 w source 25 without 100 w source 50 without 100 w source 50 without 100 w source 50 without DISK AND XBASIC UTILITY PROGRAM LIBRARY 50 FLEX edit sectors sort directory maintain master catalog do disk sorts CMODEM PROGRAM 100 FLEX amp OS 9 menu driven with terminal mode file xfer MODEM protocol etc OBJECT ONLY versions EACH 50 FLEX amp OS 9 5 25 DISKS EACH 10 PACK 13 SSSD 15 SSDD DSDD 25 DSOD American made excellent quality with jackets and hub rings Computer Systems Consultants Inc 1454 Latta Lane Conyers GA 30207 Telephone Number 404 483 1717 4570 Most programs in source on disk give computer disk size OS Contact CSC for full catalog and dealer information 25 off multiple purchases of same program on same order VISA and MASTER CARD accepted US funds only please Add GA sales tax and 5 shipping no shipping for disks in 100 s FLEX trademark Technical Systems Co
22. 64 or 85 characters per line with 21 or 24 lines per screen You get a professional display on your Color Computer without any hardware modification Buy the Integrated Library for 149 95 Radio Shack Catalog No 90 0213 Or buy the individual volumes separately as shown on the following pages t Requires 64K and one or more disk drives integrated Library Comes on one disk veri of programy are not supplied exbept tor VIP Spelte 1107 99 9 The upgrade offer is Nay purchase the Integrated Library credit will ONLY be a owned Thn upgrade oller w available ONLY Th P sute to include 6 DO for shipping handling VIP program regardless of how marty are ah Soltlaw and not through Radio Shack ote to ome Library per pers VIP Writer RATED TOPS IN RAINBOW COLOR COMPUTER MAGAZINE amp COMPUTER USER The most powerful and easy to use word processor is available in the showpiece and workhorse of the Library The VIP Writer The result of two years of research the VIP Writer offer every feature you could desire from a word processor It is the most powerful fastest most dependable and most versatile With the hi tes display workspace and compatibility features built into the Library the Writer is also the most usable Nearly every feature and option possible to implement on the Color Computer The design of the program is excellent the programming is flawless October
23. Educators and parents are just starting to learn the most effective use of the computer as a teaching aid you can expect HOT CoCo to relate the latest discoveries to you My space is short so I ll conclude with a promise that HOT CoCo will continue to provide the best programsand the best product evaluations available in any magazine Here s to the next two years Michael E Nadeau HOT CoCo Is a member of the CW Communicationa inc group the word s largest publisher of computer related Information The group publishes 52 computer publications In 19 major countries Members of the group include Argentina s Computenworkd Argertina Australla s Australis Computerworid Australian Micro Computer Magarine Australian PC World and Directories Grazil s OstsNews snd MicroMundo China s China Computermorid Denmark s Computerwortd Danmark snd MicroVerden Finland s Mikro France s Le Monde Irformtque Golden Apple snd OPC IBM Germany s Computerwoche Micrvcomputerweit PC Welt Software Markt CW Edon Semyur Computer Business and Commodore Magarine Italy s Computerworid italla Japan s Corpurenwo td Japan and Perso ComWortd Mexico s Compu terworid Mexicoand CompuMundo Netheriand s CW Benelux and Micro Info Norway s Computerwortd Norge and MikroOyts Saudi Arabla s Saudi Computerwortd Singapore s The Aslan Campufereart Spain s and MicroSistermmp Sweden s Computer Sweden MikroDatorn and Min Hemdator
24. Order Entry System e Easy File Data Manager UTILITIES AND MISCELLANEOUS Super Screen Super Bug Easy Edit Line Editor Zookey Typing Tutor HARDWARE AND ACCESSORIES e Discs amp systems start at 99 95 e Quality video Monitors Taxan Amber Sakata Color Universal Video Driver 129 95 269 95 29 95 works with all Color Computers amp all monitors e Super Pro Keyboard F Board Adapter SUPPLIES C 10 Cassettes w labels Cassette Storage Boxes 54 Disks high quality nationally advertised brands 64 95 4 95 59 ea or 10 for 5 50 25 ea or 10 for 2 00 2 25 ea 10 for 19 95 64K Memory Expansion Kit all parts amp complete instructions Fanfold Printer Paper letter size sheets 9v x 11 with detachable perforated margins high quality 20 Ib bond 39 95 500 sheet pack 8 95 2500 sheet carton 37 95 SHIPPING orders under 100 please add 2 regular 5 All orders over 100 please add 2 regular 5 California residents please add6 sales tax Ordersoutside the continental U S check with us for shipping amount please remit U 5 funds Software authors contact us for exciting program marketing details We accept MasterCard and VISA Distributed in Canada by Keily Software FREE Send for our NEW 24 page catalog Mark Data Products 24001 ALICIA PKWY NO 207 MISSION VIEJO CA 92691 e 714 768 1551 June 1985 HOT CoCo 37 language routine that works through the
25. See your local DYNAMITE dealer or order di rectly from CSC at the address below We accept telephone orders from 10 am to 6 pm Monday through Friday Call us at 314 576 5020 Your VISA or MasterCard is welcome Orders outside North America add 55 per copy Please specify diskette size for FLEX or OS 9 versions Computer Systems Center 13461 Ollve Blvd Chesterfleld MO 63017 314 576 5020 UniFLEX software prices Include malntenance for the first year DYNAMITE is a trademark of Computer Systems Center 82 HOT CoCo June 1985 FLEX and UniFLEX are tradernarks of TSC 05 9 is a trademark of Microware and Motorola Dealer Inquiries welcome VISA ZIN Reader s Forum 74LS 138 snapped off and I had to buy new chips Here s a way to avoid all that aggravation Go to Radio Shack and purchase new low profile IC sockets for each of the chips that you plan to modify On the bottom of most of these sockets there are four tabs one at each corner Cut them off Now wherever you had planned on bending a pin on an IC chip just remove the corresponding pin from its new socket Next plug the new socket piggyback into the original socket on the board Solder all your jumpers at the top of the IC pins and then plug the chips back into the stacked sockets I did this on an E board and there was plenty of clearance when Ireplaced the RF shield Check for proper clearance before you try the modifications my way Peter D Rya
26. TO ORDER Check the publications you want above then fill in below and return this page to CW Communications Inc Circulation Department Box 880 Framingham MA 01701 Name Title Company Nature of Business Street City State Zip Please print or type Telephone Address shown is O Home Business O Bill me Payment enclosed make check payable to CW Communications inc Send information about foreign rates Please allow 6 to 8 weeks for your first issue Your Money Back Guarantee If for any reason yourre ever dissatisfied with your subscrip tion simply request a refund for all unmailed issues z CW COMMUNICATIONS INC 375 Cochituate Road Box 880 Framingham MA 01701 617 879 0700 6 09 12 06 Circle Reader Service card 18 From Computer Plus to YOU PLUS after PLUS after PLUS A VERY AFFORDABLE DAISY WHEEL PRINTER SMITH CORONA L 1000 The Smith Corona L 1000 text printer delivers fully formed executive quality daisy wheel print at a speed of 12 characters per second It features bi directional printing triple pitch 10 12 15 cpi logic seeking underlining 570 char acter buffer and has both a serial and parallel interface for easy connection to any computer It takes single sheets of paper up 13 inches wide and an optional continuous forms feed can be added at any time CALL TOLL FREE 1 800 343 8124 e LOWEST POSSIBLE
27. graphics codes Side Wise comes with rou tines for driving Radio Shack s DMP series Epson C Itoh Okidata and Gemini printers and their clones These drivers should cover most installations Author Dennis Derringer has offered to assist customers with making the program compatible with other printers or refund the purchase price of Side Wise The program disk contains two copies of a Basic program called Side and a machine language routine named Wise You can copy these on an applications program disk and use them single disk system Once Side Wise is in memory you can exchange a data disk for the program disk Side Wise operation is easy Typing RUN SIDE loads the program and brings up prompts for you to type in the printer and baudrate you want to use and a main menu The next step is to specify the name and drive number of the ASCII file you want to read and then stand back Side Wise loads the file and displays the number of lines of text it contains You can either specify the first and last lines for printing or just print the wholefile if it will fit Fitting means that the short dimension of a printed page typi cally 8 inches is large enough to hold all the lines The menu screen tells you how many lines will fit Side Wise s documentation also has a table of the number of printed lines it takes to cover the width of a page in both standard and compressed format you select one of these two fonts with a to
28. resistor and inductor was physically close to the base circuitry of the transistor and the signal was being capacitively coupled into the base This was critical as to the dress of the components and I couldn t obtain a satisfactory result except when I was holding the parts with my hand The circuit was necessary because Motorola chose not to gener ate any color burst from the VDG in the black and white displays Thus PMODE 4 color set 1 and PMODE 2 color set 1 might have color burst that makes it possible to create predetermined colors with most television sets and composite video monitors The junction of R44 R45 and R47 isa convenient place to inject this clock signal because it it a low impedence point and the leg of the pot is easy to solder to See Fig 1 I discarded the capacitor and inductor because they seemed to serve no useful purpose and attached the 33K resistor with its leads cut short to the clock signal at the postto theleft of U6 By running a shortlength of 426 wire from the 33K resistor tothe left leg of the pot I had a stable circuit insensitive to lead dress The 33K resistor just happened to be the right value Other sets might require slightly more or less but one should be careful not to inject so much clock that the normal colors are affected With this circuit I get bright reds and blues Fred B Tinker Beaverton OR Memory Uparade Trick If you have ever tried either the 64K upgrade or the inverse
29. 05830 800 361 4970 It works with any Color Com puter but requires a third party disk control ler such as J amp M s 400 controller Dual DOS Card sells for 19 95 plus 4 for shipping Zookey could be improved by having an elementary screen in which each of the eight columns corresponds to a finger to help young and new typists with finger control Zookey would also gain by being able to download through a Network 11 controller making it a viable classroom supplement Does Zookey teach typing Not if you se lect a skill or speed level that is too high At high levels many people will be given to ran dom key mashing just to raise the score But if you are the kind of person who reads the directions and sticks to them you could learn a great deal about using a keyboard from this program Zookey relies on a re sponsible attitude on the part of students us ing it in order to teach typing But at worst students will gain a better understanding of the CoCo s keyboard Those who apply themselves will learn to type And Zookey is entertaining for all Bl Zookey is manufactured by Mark Data Prod ucts 24001 Alicia Parkway No 207 Mission Viejo CA 92691 714 768 1551 It requires 16K and sells for 24 95 on cassette and 27 95 on disk plus 2 for shipping Remarkable CoCo Logo by Richard Ramella organization production quality thoroughness readability J prd pou ES OVERALL RATING 4 50 Books Y c
30. 1983 Rainbow Among word processors for the CoCo VIP Writer stands alone as the most versatile most professional program available May 1984 Comptuer User The Writer will work with you and your printer to do things you always wanted to do Every feature of your printer can be put to use every character set every graphics capability at any baud rate EVEN PROPORTIONAL SPACING All this with simplicity and elegance Professional features of particular note m Memory Sense with BANK SWITCHING to fully utilize 64K giving not just 24 or 30K but up to 53K of workspace with the tape version and 50K with the disk version FORMAT WINDOW allowing you to preview the printed page ON THE SCREEN BEFORE PRINTING showing centered lines headers FOOT NOTES page breaks page numbers amp margins in line lengths of up to 240 characters It makes HYPHENATION a snap BA TRUE EDITING WINDOW in all 9 display modes for those extra wide reports and graphs up to 240 columns BFREEDOM toimbed any numberof PRINTER CONTROL CODES anywhere EVEN JUSTIFIED TEXT B Full 4 way cursor control sophisticated edit commands the ability to edit any BASIC program or ASCII textlile SEVEN DELETE FUNCTIONS LINE INSERT LOCATE AND CHANCE wild card locate upto TEN SIMULTANEOUS block manipulations word wrap around programmable tabs display memory used and left non breakable space and headers footers and FOOTNOTES BAutomatic justification automatic pagin
31. 48 B1l RND 128 1 B2 RND 128 1 5 Ml INT B1 16 L1 B1 M1 16 69 2 2 16 1 2 2 2 16 79 IF 1 lt 1 PRINT 142 STRS L 1 GOTO9g 8g PRINT 143 CHRS L1 55 99 IF lt 1 PRINT 141 STRS M 1 GOTO11g 18g PRINT 141 CHRS M1 55 11g PRINT 172 12g IF L2 19THEN PRINT 0174 STRS L2 GOTO149 138 PRINT 175 CHRS L2 55 14 IF 2 lt 1 PRINT 173 STRS M2 GOTO179 15g PRINT 173 CHRS M2 55 168 PRINT 172 178 PRINT 294 188 PRINT 239 CHRS 128 199 AS INKEYS IF AS THEN19g 289g PRINT 239 AS 218 PRINT 238 CHRS 128 220 BS INKEYS IF BS THEN229 23 PRINT 238 BS 24 lt gt THEN359 258 IF BS J OR BS F THEN359 268 IF 5 lt 9 A VAL AS 27g IF 5 gt A ASC AS 55 28g IF 5 lt 9 B VAL BS GOT 031g 298 IF 5 gt 5 5 55 GOTO319 399 GOTO35f 318 AN A 16 B 329 IF AN lt gt B1 B2 THEN359 33 PRINT8296 RIGHT E 349 FOR I 1TO1g89 NEXT GOTOI B 350 PRINT 296 WRONG TRY AGAIN GOTO18g ENO Generation HDS Floppy Drive Controller Board IVE SPECIALIST pea CONTROLLER AS SEEN AT THE RADIO SHACK COMPUTER SHOWCASES New Low Prices DISK DRIVE SYSTEMS SINGLE SIDED DOUBLE SIDED Drive 0 Complete 249 289 Drive 1 Complete 9469 209 Drive 0 amp 1 Dual Drive 399 479 64K UPGRADE
32. 5 I VAL amp H AS N I RESTORE FOR I 3238f TO 3230 172 I VAL amp H AS NEXTI RESTORE DEFUSRf 2323 f DEFUSR1 32326 gt THEN 54 1 XX USRB B GOTO1B POKESHFFDE 1 YY USR1 J END ML SUBROUTINE 1 DATA1A 58 8E 80 88 A6 84 B7 DATAPF DP A7 82 B7 FP DE 8C DATAFF 99 26 F1 B7 FF DF 1C DATAAF 39 ML SUBROUTINE 2 DATA1A 58 8E 02 92 12 85E 09 6 8 7 05 7 DATAB7 FF D4 19 8C 89 f8 25 DATAF 1C AF ML SUBROUTINE 3 DATAB7 FF D5 86 39 B7 91 67 DATAB7 FF C6 B7 FF C9 B7 FF DATACA B7 FF CC B7 FF CE B7 DATAFF Df B7 FP D3 39 ML SUBROUTINE 4 Listing continued June 1985 HOT CoCo 45 Listing continued 320 DATAB7 FF D4 86 7E B7 91 67 33 DATAB7 FF C6 B7 FF C9 B7 FF 34 DATACA B7 FF CC B7 FF CE B7 359 7 02 39 355 ML SUBROUTINE 5 368 1 5 8 00 00 10 8 0 378 6 80 7 5 7 388 DATAB7 FF D4 19 8C 95 FF 25 399 DATAFB 1C AF 7E 7E 61 395 ML SUBROUTINE 6 40 DATA1A 52 8E 9 9 09 19 8E 418 7 04 7 429 DATAB7 FF D5 10 8C 85 FF 25 43g DATAFB 1C AF 7E 7E 7F Program Listing 2 Bank Switching Utility Assembly Version 989932 MACHINE LANGUAG UBROUTINE 1 59898 7 2 7E2C lA 50 00100 ORCC 550 INHIBIT INTERRUPTS 7 2 8000 00110 LDX 58000 START OF ROM 7 1 A6 84 00120 LOOPl LDA X GET ROM BYTE 7E33 B7 FFDF 00130 STA SFFDF
33. 99 IF CODE 999 THEN PRINT MACHIN E CODE IS NOW IN MEMORY GOTO 5 9g 199 POKE AD CODE llg 1 GOTO 8g 5gg IF PEEK amp HC999 68 THEN SAVE M BDEFENSE BIN amp H3D99 amp H3FDB amp H 3D PRINT BDEFENSE IS NOW STOR ED ON DISK END 519 PRINT TO SAVE BDEFENSE ON TA PE TYPE 528 PRINT CSAVEM CHRS 34 BDEFEN SE CHR 34 amp H3D99 amp H3FDB amp H3D9 g 1999 1g1g DATA 52 64 158 176 51 141 9 213 239 129 1828 DATA 51 14g 77 239 129 51 14 4g 239 129 1939 DATA 51 141 2 199 239 129 51 141 1 44 104 DATA 239 129 51 141 2 154 239 132 222 186 185g DATA 51 281 12 255 6 2 149 53 64 48 1868 DATA 141 1 15 31 16 12 6 188 244 141 34 107 DATA 98 39 248 166 140 38 68 204 2 128 1980 DATA 37 3 294 49 164 136 224 228 136 1490 DATA 225 237 227 23 159 236 225 32 221 118g DATA 141 2 32 217 189 179 237 192 6 231 1118 DATA 149 112 284 3 9 29 158 186 68 1128 DATA 86 48 139 294 24 15 37 3 204 1138 DATA 255 164 132 228 1 237 132 182 255 35 1148 DATA 132 247 183 255 35 182 255 32 167 149 1158 DATA 5 173 159 169 19 134 9 183 255 32 1168 DATA 182 255 35 138 8 183 255 35 252 1 117 DATA 99 3g 137 139 14 88 88 237 141 1 1189 DATA 92 68 86 68 86 23 7 149 181 158 186 1198 DATA 68 86 48 139 294 15 24g 37 3 294 1288
34. As club secretary am the contact person and can be reached at 401 739 8743 We ask that all inquiries include a stamped self ad dressed envelope No collect calls please Robert J Sullivan Jr Providence RI Fort Worth TX The Fort Worth CoCo User Group meets the fourth Tuesday of each month from 6 30 8 45 p m in Classroom B at the Down town Public Library at 300 Taylor St For more information call Lloyd Rogers 294 9904 Barry Pottinger 297 2732 or Harley Ainsworth 834 9030 Lloyd Rogers Fort Worth TX Toledo OH The Greater Toldeo Color Computer Club has just celebrated its second anniversary The club meets the first Thursday of each month at the Wernert Civic Association Bldg 5060 Douglas Road Toledo OH They operate a members only BBS and are offer ing a machine language class Contact Bob Butler at 537 1432 Ronald L Hall Monclova OH Mercer County NJ CoCo users interested in joining The Mer cer County Color Computer Club should call 609 883 0823 A T Most Lawrenceville NJ r otters to the Editor wwFs _ Kingston Ontario The newly formed Kingston CoCo Club meets the first Monday of every month at Kingston City Hall If you would like more information contact me at 613 389 0467 or Ken our president at 613 544 2806 Kanti Dinda Kingston Ontario On Line Are you operating a BBS Send us a note to let our readers know about your service impor
35. BS 429 1 1 0S LH ASC BS 430 GET 1 2 0S LL ASC BS L LH 256 LL 44 GET 1 3 0S AH ASC BS 450 1 4 0S AL ASC BS A AH 256 AL 460 IF TI 255THENT A TH AH TL AL GOTO529 478 IF UNS Y AND TI 0f THEN IF A 159 THEN UA OS 488 IF EA OR EA A THEN 49 ELS E GOSUB599 GOSUB589 490 EA A L 599 IF 5 THEN GOSUB 569 GOSUB5 8g 510 IF TI THEN S S L OS L 5 0 S GOTO41fg 528 IF UNS Y AND UA THEN GOS UB73g REMOVE LOADER 53g CLOSE 1 54g GOSUB 59f GOSUB69g 550 PRINTSTRINGS 39 568 GOSUB 559 PRINTAS HEX DEC 578 PRINTSTRING 39 RETURN 588 PRINT LOADS HEXS A A RET URN Listing continued 59g PRINT ENDS HEXS EA EA RE TURN 600 PRINT EXEC HEXS T T 619 PRINT SIZE HEXS S S RETU RN 62g GOSUB389 FL OS PUT LOADER 630 OPEN D 41 A 1 649 FIELD 1 1 AS B 658 RESTORE 668 FOR I 8TO23 678 READ B 689 LSET BS CHRS B 69g PUT 1 FL 788 FL FL 1 71 NEXT I 728 GOTO 769 73 FL UA REMOVE LOADER 749 BBS CHRS 255 GOSUB89g 750 BBS CHRS 8 GOSUB888 GOSUBB8f g 76 BBS CHRS TH GOSUB89g 77 BBS CHRS TL GOSUB8 9 788 CLOSE 1 790 RETURN 899 LSET BS BBS PUT 1 FL FL FL 1 RETURN 810 AAS AS CHECK IF FILE EXISTS 829 CO INSTR 1 AAS 839 IF THEN DRS LEFTS AAS C 0 1 DR VAL DRS AAS RIGHTS AAS LEN AA CO 649 IF THEN 858 SL INSTR 2 AAS 868 IF SL THEN888 878 SL INSTR 2 AAS
36. DATA 255 179 132 234 1 237 132 198 14g 121 DATA 13 39 19 204 14 1 28 131 9 30 738 1228 DATA 251 32 145 134 B 246 255 f 196 123 DATA 57 189 179 237 231 148 24 128 2 167 124 DATA 14g 29 237 14 33 I96 3 134 l3 61 1258 DATA 48 149 42 48 133 167 1 76 167 1 1269 DATA 294 9 132 69 61 283 18 231 2 1278 DATA 204 71 86 237 6 204 1288 DATA 84 84 231 148 1 1 39 129 3 37 1298 DATA l 74 167 12 57 85 12 13gg DATA 1 p B 179 g 31 DATA 12 p 0 0 1 328 DATA 255 p 12 p p I 339 DATA g p g 3 3 Fa 3 222 22 1348 DATA 52 96 49 141 f 14 Tg 5l L49 202 LIL 135g DATA 14g 56 194 14g 53 188 65 141 58 167 1360 DATA 75 236 141 119 163 78 167 74 230 137 DATA 65 193 8 37 25 4 8 14 212 166 76 1388 DATA 48 134 166 132 129 5225 36 4 5193 88 1399 DATA 38 8 186 132 198 4g 11 79 39 1488 DATA 166 196 51 77 76 38 201 198 53 1419 DATA 96 126 189 244 236 196 167 1428 DATA 149 42 231 14g 245 236 66 237 14 45 1430 DATA 236 68 237 14 48 238 149 37 68 86 144 DATA 68 86 68 86 158 1 86 48 139 239 149 145g DATA 24 196 6 166 165 164 132 167 149 5 1468 DATA 92 166 165 132 f 138 B 188 62 149 147 DA
37. DRIVE SALE Special prices on new first quality disk drives They even have GOLD connectors on the back Some other places charge 279 00 for dr 1 and 349 00 for dr 0 not us Drive 1 is for mod Second Color Computer drive or external mod III IV Drive 0 is your first Color Computer drive and comes complete with controller cable and manual Bare drives for internal mod III IV only 89 95 For double sided add 45 00 only for those who have DS DOS boards and knowledge Add 3 90 for shipping amp handling Visa M C accepted Dealer inquiries welcome 68 HOT CoCo June 1985 MOVING SUBSCRIPTION PROBLEM Get help with your subscription by calling our new toll free number 1 800 645 9559 between 9 a m and 5 p m EST Monday Friday If possible please have your mailing label in front of you as well as your cancelled check or credit card statement if you are having problems with payment If moving please give both your old address and new address New York State residents cal 1 800 732 9119 Circle Reader Service card 337 DOUBLES DISKETTE CAPACITY CUTS YOUR DISK COST 50 Now The back of 5 44 Diskettes can be used for data storage even with single head disk drives SEL Tools make it easy e Adds the Precise notch where it s needed e Doubles Diskette Space or Money Back Corran NOTCH i Cuts square notch and Ya inch round index hole For use with T
38. In Stock Parts Dealer Inquiries Invited Call 617 872 9090 Toll Free 1 800 343 8841 Please Call For Our Latest Price Saving Specials Not Responsible for Typographical Errors Prices and Specifications May Change Without Notice Please Call For Shipping Handling And Insurance June 1985 HOT CoCo 25 Circle Reader Service card 4222 Lhe Master Handicapper EVALUATES FROM RACING FORM Age Gender Class Condit on Consistericy gt Tramer WorkoulIs REPRESENTATION of fish PROGRAM GLD Thoroughbred Gold Edition IM A Full featured thoroughbred analysis designed for the protes Siona and serious novice S159 95 complete Enhanced Gold Edition TM Gold Editon with complete Master BettorTM system integrated Onto the same disk This powerful program will transfer all horses and scores to the bet analysis with a single keystroke Master inciuded 199 95 compiete GLTD Limited Gold TM Enabies Protessional Handicappers 10 assign specilic values to the racing variables they feel are important PROFESSIONAL HANDICAPPING SYSTEMS Age 5 Consistency 15 Speed 10 Class 15 Jockey 15 Workouts 0 Condition 10 Traner 5 Time of Year O Earnings 5 Post 10 Consistency 5 100 Is Everything OK Y N Create program weight based on a particular track and ne tune it formaximum win percentage This program isdesignedtor ease of use The user needs no pro
39. Lewandowski at DSL The company is also publishing The 128K Newsletter selling at the subscription rate of 10 per year Included in upcoming issuesis an explanation by Dennis Derringer of Derringer Software on how to make Pro Color File work on 128K the Easy The ME 128 64 is manufactured by Dynamic Electronics Inc P O Box896 Hartselle AL 35640 205 773 2758 The company offers sev eral models to cover all the board versions of the Color Computer ranging in price from 129 to 189 Dynamic s 96K X not reviewed here uses another method to give you extra memory and costs 59 49 in cartridge form The 128K the Easy Way kit is manufactured by DSL Computer Products Inc P O Box 1176 Dearborn MI 48121 313 582 8930 Models are available to Jit all 64K CoCos and the CoCo 2 for 99 Reviews edited bu J Scot Finnie Ed note In keeping with HOT CoCo s new appearance our review rating system has undergone an overhaul to standarize review ers assessments We have reduced the num ber of ratings from ten to six and given eacha short description The change is meant to make the reasoning behind ratings clearer for readers and reviewers alike We have also added overall ratings to sum up our reviewers impressions Overall ratings are an average of the ratings for all the categories rounded to the nearest quarter of a rating point The table be low defines the new rating system HOT CoCo s New Review Ratings
40. NEXTI 228 PRINT E BOARD TEST CHECKS OK PRINT All program listings are available on our 238 GOTO119 248 147 99 258 IF PEEK amp HA147 lt gt 99 THEN PRI 5 FAILS GOTO117g 268 PRINT OS 9 FLEX OUT PRINT 278 GOTO11g 64K CHECKS Program Listing 2 64K Enable 19 REM ENABLE 64K AND COPY BASIC INTO RAM 28 FOR I 32382 TO 32497 READ X 4g POKE I X 5g NEXT I 68 EXEC32382 7 DATA 26 8 142 128 166 132 183 87 DATA 255 223 167 128 183 255 222 140 99 DATA 255 0 38 241 183 255 22 3 28 18g DATA 175 57 11 REM RESET PROTECTION 128 POKE amp HAf55 amp 5HfD 130 FOR I amp HAf68 TO amp 71 148 POKE I amp H12 15g NEXT I 168 REM USE RESET VECTOR 178 1 114 A2 PEEK 115 187 114 POKEl115 amp HF8 19 amp 12 28g 9 5 7 GHFF amp 219 amp 7 2 228 PRINT BASIC NOW IN RAM 238 POKE 44414 ASC o 248 POKE 44915 ASC k amp 45 45 20442200 48 quio OU iuge ears Instant CoCo cassette The 80K Color Computer Program Listing 1 Bank Switching Utility 5c 1g 2g EXT 25 3g AS 4g 4l 42 45 47 5g 52 54 55 6g 199 20 21g 220 23g 235 24g 25g 260 27g 275 28g 29g 39g 31g 315 LEAR 1989 3239g FOR 65 68 TO 657684172 READ
41. Our graphics character through desert mountains and City to seek the illusive treasure of Super graphics with a person who wolks with you ot each turn Disk amp Amdek 2995 Loveless Manor rapped in o bedroom by your evit Gunt you ve admired Queen Cinderello s cos tle in the distance ond youve just discovered she s a distant cousin Can youescape toherprotection 32K Great word adventure Tape 21995 Diss Amdek 52455 Raid On Burdanovka Your mission should you decide to accept 1510 steal Russia s newest weapon end save the world Text adventure vith 50 rooms Tope 24 95 Disk o Amdek 2995 Search For The Llangth After years of study amp searching you have at last traced the alien race of Llangth to this valley Now your quest for the power of Llangth begins 524 95 Disk or Amdek 52995 Also Available For TRS 80e Model 100 OTHXO Othello machine language game for the 46K Ext CoCo 2 modes of play you against a friend or you against the computer When playing the computer tt will play hard oreasy Object of the game is tochange the opponent s spots to yours by placing your marker at the end of a row started by your marker Not as easy as it sounds Tape 24 95 Disk or Amdek 29 95 CO CO KENO Bting Las Vegas Keno game home with Co Co Keno Bet 51 S3 or 55 amp mark off 1 to 15 spots can yau beat the odds amp win 5500007 16K high resolution screen Keno chart
42. RATING 5 Application Software D 0 you use your Color Computer to gen erate w i d e spreadsheets Are you tired of compromising your high tech print outs by using cellophane tape to hold them together Then you might be interested in Side Wise a nifty new utility from Derringer Software Side Wise can read any ASCII disk file and signal a dot matrix printer to print on a 90 degree angle so that the spread sheet s rows are running parallel with the Edittron has already found a home in this application on one of my frequently used disks I recommend the routine highly W Edittron is manufactured by Vidtron 4418 E Chapman Ave Suite 284 Orange CA 92669 714 639 4070 It runs on 16 to 64K CoCos and requires Extended Color Basic It sells for 20 on cassette and 22 on disk long dimension of the paper The most com mon application for this feature might be a multi columned spreadsheet that represents a long period of time There are some minor limitations Side Wise limit printed lines to 255 characters but that is enough for many purposes The program also requires your printer to have dot addressable graphics capability the ro tated characters are produced by a machine GREAT COCO PRODUCTS HI RES GRAPHIC ADVENTURES Calixto Island Black Sanctum Shenanigans Sea Search Trekboer ARCADE GAMES Tut s Tomb e Time Fighter e Other titles available BUSINESS SOFTWARE Accounting System
43. S X 2095 NEXTX 2100 PRINT A CHRS 128 2118 AS INKEYS IFAS THEN2119 2111 12 7 88 2112 IFAS D THEN229f 2113 IFAS A ANDE S THEN223fELSE IFAS ANDE S THEN 2238 2115 PRINT8A CHR 32 212 IFAS CHRS 10 32 gt 448 32 1 1 60 02 968 2130 94 32 lt 3 2THENA A 32 B B 1 E2E 1 GOTO29 6g 2135 IFAS CHRS 9 THEN2169 2148 IFA S 32 THENA A 32 2158 GOTO2199 2168 A A 3 2165 X PEEK A 1922 64 217 PRINT A CHRS 32 218 LINEINPUT S X PRINTBSS I NPUTS X 2198 A A 3 GOTO296g 2298 X PEEK A 1925 64 221 FORD X TOS 2228 SS D SS D 1 S D 2S D 1 N 5 5 1 55 0 SEC SUBJECTAR HE AMOUNT IFE gt STHENIFS lt 15THENE E 1 B 1 A A 32ELSEB B 1 F E 1 2221 IFS 14THENA 448 2222 IFA PSTHENA 32 2223 IFS STHENRUN 2224 GOTO2069 2238 GOSUB22898 IF X LP gt 23 THEN 2 g6g 2231 X X 1 FORLL 1TOLP X X 1 2248 5 5 1 32 32 PRINT A 2258 PRINTCHRS 128 CHRS X 64 LINEINPUTSS X 2268 PRINTBSS INPUTS X 2265 48 448 2266 IFS lt 15THENE E IELSEB B 1 E 2278 NEXT LL GOTO2f6f 2288 FORLP l1TO1gf AS INKEYS IFVA L AS gt BANDVAL AS lt 1 RETURNELSENEXTLP LP 1 RETURN 3998 IF S 9 THEN RUN ELSECLS PRI NTT FARRER RRR RRR RR 3991 PRINT CHANGE SUBJECT FROM 3818 PRINT
44. Slot unit this economical cable will allow to connect and use your Real Talker and Disk system 27 95 SOFTWARE FOR THE REAL TALKER TALKHEAD can be easily commanded in Basic to appear on screen and say anything you want Available on cassette or disk for only 19 95 TALKHEAD requires 64K and a Colorware Real u ONLY 19 95 ACTUAL UNRETOUCHED PHOTO ORDERING INFORMATION x x x ADD 2 00 PER ORDER FOR SHIPPING amp HANDLING C O D 5 ADD 53 00 EXTRA SHIPPING amp HANDLING FOR CANADA 15 3 00 WE ACCEPT VISA MASTER CARD 5 CHECKS RESIDENTS MUST ADD SALES VISA This is one of those rare programs that will captivate everyone in your family No one can see CoCo Max and not want to try it File Edit Goodies Font Style We are all witnessing an exciting revolu tion in microcomputers a radically new kind of computer and software that opens a whole new world of creative power to compuler users It was inevitable that this exciting ap proach would be brought to the CoCo With this in mind Colorware chose to go all out and maximize this new con UNMATCHED CAPABILITY Because we took the maximum approach highly optimized machine code combin ed with hardware CoCo Max trulv stands above the rest as the ultimate creative tool for the Color Computer It s unrivaled performance lets you create with more brilliance and
45. St Peterborough NH 03458 See our adon p 64 for more details Instant CoCo Directory June 1985 Side A Article Name Author Description Page File Name System Copyright Statement TITLE 16K CB Doctor ASCII Esposito and Jackson 18 PUTLDR 32 64K ECB Automatically execute machine language programs from disk Mindbusters Ramella 22 FIFTEEN 16K ECB Can you solve these three puzzles BULLS 16K ECB CONSARN 16K CB 64K Modification Revisited Esposito 40 MEMTEST 32 64K ECB and Rowe ENABLE 64K ECB Test your upgrade and enable your 64K of memory Missile Defense McDowell and Diehl 44 DEFENSE2 16K ECB The aliens won t be so easy to stop DEFNSLDR 16K ECB this time The 80K Color Computer Grace 57 80K 32 64K ECB Access your CoCo s hidden memory Side B Pie In The Sky Riegel 59 PIEGRAPH 16K ECB Create your own pie charts Investment Analysis Chakravarty 62 INVSTMNT 16K ECB Consult your CoCo before you invest Fabulous Fonts For The Gemini 10X 66 GEM 10X 16K ECB Stoloff Generate custom character sets for this popular printer How Your CoCo Adds Up Tipps 70 BINARYOR 4K CB Learn binary and hex math HEXERCIS 4K CB 6809 On Line Ballard 78 BUFFTEXT 16K ECB Give Vidtex a buffer BONUS PROGRAM High Resolution Character Generator GLETTER m 16K ECB Bussell DEMO 16K ECB Put an alphanumeric character set CHARMOD 16K ECB on a hi res screen CB Color Basic DECB Disk Extended Color Basic ECB Extended Color Basic
46. T gt 9 THEN 5 1 S T S T A 1G T T 1 GOTO 197g 199 IF S 3 S 4 19 CC THEN 202 ELSE CC CC 3 1 PLAY T 205V24L890AP3g IF 1 THEN C 2g 1 1 1 2ggg GOTO 199g 2g1g CHECK LEVEL AGNST SCOR 2928 IF 1 5 1 lt 5 3 5 4 10 AND L lt 5 THEN L L 1 2030 CHECK IF NEW CTY NEEDD 204 FOR TO 5 IF C AND C 1 THEN 2955 ELSE IF 1 lt 3 T HEN PLAY P GOSUB 186 Cg Cg l IF lt THEN 9 1 1 205 NEXT T 2055 IF CT THEN 244 ELSE1488 29698 START OF ALIEN ROUTINE 2878 CLR STRMRS CHNG SCRN MODE GET ALIEN ATTK X STRT amp ANGL 2888 FOR T TO 2 GOSUB 1819 N EXT T MD l1 MD CM MD 4 SCREEN l MD R 2090 A RND 199 2 26 B 32 1 26 A L 126 2198 SELECT ALIEN 211 ON RND 5 GOSUB 2290 2320 2 350 2380 2410 2128 OF ALLEN LOOP 2138 INCR ALIEN POS DRAW CURSO R amp ALIEN CHECK IF AT FORTRESS 2148 A A C B B L R l R IF RT HEN PLAY P2 215g DRAW C2BM STRS INT A STRS B AS R B CA AS R 1 2168 IF B gt 156 THEN 225g 217g IF USR2 L THEN 2239 2198 GOSUB 221 GOTO 214g 228g CLEAR ALIEN 2218 DRAW CIBM STRS INT A STRS B AS R g AS R 1 RETURN 2228 ALIEN HIT 223 GOSUB 221 POKE PN f PLAY 15 POKE GOSUB 189 VA 20 SC 1g GOTO 196g 2248 ALIEN ATTKD FRTRSS CHECK NMBR OF BONUS CITYS 2259 IF Cl AND C lt L THEN 2449 ELSE GOSUB 22198 PLAY V2403L9T3 lt lt
47. To save information to tape give page numbers corresponding to the TP you wish to save at the prompts Bufftext then prompts you for a file name which must fit Basic standards e g eight charac ters When you see the title screen again Bufftext is done That s it The tape you saved using Buff text is in ASCII format and you can load it into any other software that supports ASCII input from tape You can for example load this tape into Color Scripsit for editing for matting printing and resaving You ll find Bufftext useful for PEEKing or printing RAM in ASCII format even if you don t own a copy of Videotex Most impor tant using Bufftext with Videotex lets you capture information that some fancy soft ware protocols won t capture Feel free to modify and improve the program I d love to hear about your fixes ideas or solutions for using Videotex and Bufftext or about any other experience you ve had telecommuni cating with your CoCo Address correspondence to Bobby Ballard 1207 Eighth Ave 4 R Brooklyn NY 11215 Assernbly by Victor and James Perotti What s in a Program O kay let s get the big picture The 6809 CPU can read and process only binary machine code An assembler is a piece of soft ware that converts assembles a text pro gram file into machine code There are three steps involved with Assembly language writing an Assembly program in an ASCII editor i assembli
48. U gt PDATE lt C gt LS L lt D gt IRECT ENTRY lt Q gt lt V gt IEW LS lt P gt ROGRAM lt L gt OAD lt WORITE lt T gt EST 54 FOR C 224T0233 PRINT C CHRS 255 Y X RETURN 55g DATA180 87 41 18 7 1 568 PCLEAR1 GOTO28 How Your CoCo Adds Up Program Listing 1 Binary OR Drill 19 DIM A1 7 A2 7 AN 7 28 CLS PRINT 11 BINARY OR 49 Hl1 RND 256 1 H2 RND 256 1 5 HX Hl 60 FOR 7 5 1 79 GOSUB44f Al B INT HX B1 99 HX HX A1 B B1 18g NEXT 118 HX H2 128 FOR 7 1 13 GOSUB449 148 A2 B INT HX B1 150 HXsHX INT A2 B B1 16 NEXT 179 PRINT869 A1 7 18g FOR I 6TOPSTEP 1 19g PRINT Al I 299 NEXT 218 PRINT 98 OR 228 PRINT 131 239 PRINT 191 A2 7 248 FOR 6 5 1 25g PRINT A2 I 268 NEXT 27g FOR 07 288 PRINT8187 3 I CHR 128 290 AS INKEYS IF AS THEN29g 38g IF AS lt gt AND AS lt gt 1 THEN2 318 AN I VAL AS 329 PRINT 187 3 1 AS 339 NEXT 349 A g 350 FOR 7 368 GOSUB449 379 A A AN B B1 389 NEXT 390 IF A lt gt Bl OR H2 GOTO429 499 PRINT 296 RIGHT 418 FOR I 1T01999 NEXT GOTO29 429 PRINT 296 WRONG TRY AGAIN 439 GOTO279 44 IF B THEN 1 459 Bl 1 468 FOR 1 1 2 1 470 RETURN Program Listing 2 Hexadecimal Addition Drill 1g CLS 20 PRINT 19 HEX ERCISE PRINT 41 BYTE ADDITION
49. UTILITY by Henry C Grace Jr Compute Te of you with 32K or 64K CoCos are probably painfully aware of what it costs to useall 64K You need a disk drive and an alternate operating system to reside in the upper 32K of RAM You have probably also seen articles and notes on how to dump your ROM into RAM and activate it This provides almost 16K of additional RAM for machine language programming and for those who have modified boards it allows RAM patches My un modified 32K machine does not allow such repairs These are unsatisfying restrictions on the use of all that memory capacity sitting under your fingertips and there should be a better way to use It Program Listing 1 demonstrates thatthisextra RAM is accessible and can be used as a separate Basic operating environment Pro gram Listing 2 gives the Assembly version of the DATA statements You can have two Basic programs loaded into the computer at the same time one in each 32K bank of RAM You can execute either program independenuy of the other or cause them to interact with each other back and forth between the banks of RAM In fact you can use this technique to manipulate your cassette files Have you ever used multiple tape saves and loads to reorga nize programs on a tape Now you can simplify the process by loading two programs into the computer at the same time Or have you ever needed information contained in a program on tape but you don t want to dump the prog
50. X TO X 128 STEP 64 POKE 7 K NEXT Z X 269 E PEEK Q P F Q P 270 75 5 1 25 lt gt 25 lt gt 2 ANDZS lt gt ANDZS lt gt THENPOKEQ P 4 255 FORT 1T049 NEXT POKEQ P E G 0TO278 28g IF Z A AND WS Z OR Z Z AND WS A OR Z z AND W OR Z AND WS THEN 279 298 IF KJ 1 THEN GOSUB 529 GOTO 27g 39g WS ZS E PEEK Q P F Q P G OSUB 340 NzN41 31 IF N 5 THEN SC SC VAL CHRS E 64 N28 POKE F 112 WS 1 320 IF H 19 THEN 539 a 9 TURN H SC GOTO 34 IF 2 lt gt A THEN 379 350 IF PEEK P Q 32 lt gt K THEN Q Q 32 GOTO 469 36 N N 1 RETURN 37 IF Z lt gt Z THEN 499 388 IF PEEK P Q 32 lt gt K THEN Q Q 32 GOTO 469 390 N N 1 RETURN 499 IF 25 lt THEN 439 419 IF PEEK P Q 2 lt gt K AND PEEK P Q 1 lt gt K THEN Q Q 2 GOTO 469 42 N N 1 RETURN 439 IF Z lt gt THEN 46g 44 IF PEEK P Q 1 lt gt K AND 2 AND PEEK P Q 2 lt gt K THEN 0 0 2 GOTO 469 459 NzN 1 RETURN 46 IF 25 THEN DS N 47 IF 25 2 THEN 5 5 489 IF 25 THEN DS W 49g IF Z THEN DS E 5gg SS SS DS F Q P E PEEK Q P GOSUB 528 RETURN 510 E PEEK Q P F Q P GOSUB 52 g 52g POKE Q P 255 FOR 1 TO 2g NEXT T POKE Q P E RETURN 538 PRINT f TURN H FINAL SCOR E SC SS STRS SC 55 548 PRINT 8 328 ANSWER STRING S END Missile Deferise Program Listing 1 Defense 2 191
51. a DOS and an EPROM of your choice at your fingertips If you buy the 24 28 pin configu ration you have to modify the card to use a 28 pin chip Construction and Setup The Dual DOS Card is durable and well Continued on p 72 Circle Reader Service card 4223 DISKETTES AND 680X SOFTWARE SUPER SLEUTH DISASSEMBLER Interactively generates source on disk with labels includes xref specify 6800 1 2 3 5 8 9 6502 version or Z 80 8080 85 version OS 9 version also processes FLEX obiect file format OBJECT ONLY versions COCO DOS available in 6800 1 2 3 5 8 9 6502 version only CROSS ASSEMBLERS EACH 50 FLEX OS 9 ANY 3 100 ALL 200 specify for 180x 6502 680x 2 80 8048 51 8085 68000 true modular free standing cross assemblers written In C 8 bit source included only with all cross assemblers tor 200 DEBUGGING SIMULATORS EACH 99 FLEX 101 OS 9 EACH 50 FLEX amp OS 9 49 COCO DOS EACH 75 FLEX 100 OS 9 24 95 for tape SY2YGY siz ih gee The Ultimate Graphics Adventure You are trapped aboard the Deathstor starship and have had a near fatal en counter with the Dark Lord Darth Vader Your strength is all but gone and you know that Voder is some where near Your only hope is to lo cate the mysterious Glowing Emerald hidden deep within the Deathstor guarded by the Dark Lord himself Syzygy has over 25 graphic pictures and 300 locations with an assortment of treasures weapons and hazards These
52. accept keyboard input are easy to use because pressing the correct key provides almost immediate re sults But programming sound or speech is a difficult matter You must type each syllable or unit of sound and its associated qualities into DATA statements byte by byte Even programmers who are comfortably familiar with the terminology the manual uses will have to go through a trial and error process sorting through combinations of sound or speech units to obtain the results they desire Set Up and Construction Setting up the Sound Speech Cartridge is as easy as plugging in a ROM pack and typ ing in one of the programs from the instruc tion manual If you are using a monitor your CoCo must have an audio output because the Cartridge does not have aspeaker Disk users who have Radio Shack s Multi Pak Interface may put the Cartridge in any slot other than slot four The Sound Speech Cartridge is well con structed and has a heavy plastic housing The power contact strip on its edge connec tor card is shorter than the other contacts to reduce the risk of burning out your cartridge or computer if you forget to turn off the power before inserting the ROM pack One feature found on most ROM packs and miss ing from the Cartridge is a sliding door for covering the contacts when it is not in use Summary The Sound Speech Cartridge can generate speech a wide variety of sounds and en hance game and education programs But it require
53. allow a virtually endless array of different scenarios and complex situa tians designed ta give the user hour upon hour of entertainment and od venture Grab your light saber and may the Force be with you 32K re quired 27 95 tor disk SPACE TREK Realistic hi res 3 D graphics put you in the captair s seat of the Federation s most powerful starship Work Your way from sector to sector by fighting the deadly aliens which are trying to de stroy you A long range scanner front view screen phasors photon torpe dos mines shields star bases and 3 D asteroids are only a few of the many features which make Space Trek the most realistic space bottle simulation ever developed Space Trek will talk when you have a Tandy Speech Sound cartridge Colorware s Real Talker or Spectrum Projects Voice Pak installed Just plug one in before load ing the program and fasten your seat belt for the ultimate in simulations for the Radio Shack Color Computer 32K and joysticks required CALL 1 206 581 6938 to place your Visa or MasterCard order today SEND your order with check or money order sorry no C O D to SPECTRAL ASSOCIATES 3418 South 90th Street Tacoma Washington 98409 All orders shipped in two business days Allow two weeksfor delivery Shipping amp Handling United States add 3 2 minimum Canada add 6 3 minimum Foreign add 15 5 minimum Washington State residents add 7 8 sales tax specify 6800 1
54. are printed on both sides of a single sheet of paper They are adequate if you have installed ICs before but come without important information that a novice might need The directions explain the switch settings cover the installation of var ious configurations and take you through cutting traces and soldering jumpers But they refer to pin numbers without ever pro viding a pin out diagram or explanation of pin number locations This information is critical to the proper installation of Dual DOS and its absence could lead to damage of your equipment The following explains the pin numbering Both the socket and chip have a white dot or carved notch at one end You match the dot or notch on the chip with the dot or notch on the socket when you connect them To determine pin number 1 hold the chip with the dot or notch end up Pin number 1 is the one closest to the notch or dot on the left side and the numbers run counterclockwise around the chip Performance Once you have Dual DOSCard installed its operation is simple To go from one ROM to the other you just flip the switch Setting the switch in the center position reverts the Typing with Zookey by Dennis W Peterson meets maintains documentation objective ines ease of use a OVERALL RATING 4 25 Educational Software ookey is a typing tutorial and a game that is a great deal of fun to play If you put on your halo and follo
55. but it doesn t Brent Prokopishin Saskatoon Saskatchewan A You have two problems your cable and your switch settings cable you have catalog no 26 3014 is for connecting the CoCo to a modem and the wiring is incorrect for your printer Also your printer must have either the RE or RD type of serial interface the CD interface is a current loop and will not work without a con verter between the printer and the CoCo I ve compared the cable you have with the cable you need below The cable you have CoCo DIN plug RS 426 3014 DB25S Signal Pin amp Pin Signal CD 1 P ie 8 DSR IN 2 lt 3 Data GND 3 Duce oe lt 7 Signal Ground OUT 4 P MORTE IR 2 TX Data The cable you need CoCo DIN plug C Itoh DB25S Signal Pin Pin Signal CD J aspa E lt 20 DTR IN VE mE MCN 2 SD GND Quis A 7 Signal Ground OUT du M ns 3 RD You could modify your cable for the proper connections or if you are handy you can make your own in one of two ways First you could buy a DIN to DIN cable remove one end and wire it to a DB25P ard Fact Computing VOR BUSINESS USERS OF UM PC AND COMPATIBLES IPM oo Winning On Y CAM PULS VR NC SIR 4 OR esos Wall Street Mee A printer impresses the press Read what the experts say about Smith Corona Dot Matrix Printers PC Products 1 picked the Smith Corona D 300 for overall value It i
56. coTO6g 31 GOSUB 449 FORX 9TO8 PRINT 32 STRINGS 22 32 PRINT 329 COL X INPUTH L L 1 POKEL H NEXT PRINT 329 STRINGS 38 32 GOTO4f g 320 M 1 H R X SS 330 FOR C gTO6 34 IFPEEK R 128THENH H M 35 R R 32 M M 2 NEXT V X H 369 GOSUB389 379 RETURN 388 HS RIGHTS H 2 PRI NT 256 X LEFTS HS 1 PRINT 288 X RIGHTS H 1 RETURN 399 GOSUB528 GOSUB468 IFPEEK L 255 THENPRINT 339 UNDEFINED G OTO9g 4gg FORX fTOB L L 1 H PEEK L M 1 FORY BgTO6 41 IF H gt THENPOKEY 32 SS 128 420 M M 2 NEXT V X H GOSUB389 N EXT X 9 Y X PRINT 329 AL FPEEK L 9 gTHENPRINT NO ELSEP RINT 430 PRINT DESCENDERS GOTO98 449 GOSUB45f POKEL D RETURN 459 PRINT 329 STRINGS 30 32 NT 329 DESCENDERS INPUTAS IF AS Y THEN D 1 ELSED f 468 PRINT8329 ENTER CHARACTER LINEINPUTAS 4ANDLEFT AS 2 2 amp H THENAC VAL AS ELSEIF LEN AS 1THENAC ASC AS ELSE46g 47 IFAC lt PTHEN46SELSEL L9 AC 32 1g RETURN 488 GOSUB599 LOADM FF GOTO68 499 GOSUBS8g SAVEM FFS L L9 9 G OTO6f 599 PRINT 329 CURRENT NAME FF 1NPUT NEW NAME AS IFAS lt gt THE 5 5 519 IF FFS THENSfELSERETURN 528 CLS FOR 6 5 TRINGS 9 255 NEXT V 7 38 V 8 8 PRINT019 GEMINI PR INT846 CUSTOM DESGIGNED PRINT B1 CHARACTERS PRINT 328 use cursor 53 PRINT 384 lt S gt ET lt R gt ESET lt
57. complete error protection line counter word counter space left current file name default drive in effect set line length on screen Insert or delete text anywhere on the screen without changing modes This fast free form editor provides maximum ease of use Everything you do appears immediately on the screen in front of you Commands require only a single key or a single key plus CLEAR truly a state of the art word processor outstanding in every respect The RAINBOW Jan 1982 PROFESSIONAL WORD PROCESSING You can no longer afford to be without the power and efficiency word processing brings to everything you write The TRS 80 Color Computer is the lowest priced micro with the capability for serious word processing And only Telewriter 64 fully unleashes that capability Telewriter 64 costs 49 95 on cassette 59 95 on disk and comes complete with over 70 pages of well written documentation The step by step tutorial will have your writing with Telewriter 64 in a matter of minutes To order send check or money order to Cognitec 704 N Nob St Del Mar CA 92014 Or check your local software store If you have questions or would like to order by Visa or Mastercard call us at 619 755 1258 weekdays 8AM 4PM PST Dealer inquiries invited NOW AVAILABLEAT RADIO SHACK STORES VIA EXPRESS ORDER Apple Il is a trademark of Apple Computer Atanas trademark of Atari Inc TRS 80 is
58. displays June 1985 HOT CoCo 89 make grading easy Word Search Puzzles requires 16K and Extended Color Basic It sells for 10 95 Creative Technical Consult ants has also come up with a new way to demonstrate its pro grams to educators The com pany will send a video tape catalog of its programs for a 30 day evaluation to teachers and school officials who send a re quest for one on school letter head Contact the company for more information Games and Diversions CoCo Max was theapple in theeye of several onlookers and buyers at the Rainbowfest in Ir vine CA earlier this year The graphics package from Color ware appears to be all its adver tisements crack it up to be Look for a conclusive review of CoCo Max in next month s issue of HOT CoCo CoCo Max requires 64K and a joystick mouse or graphics tablet The package sells for 69 95 Who shot J R The Dallas Quest is a graphic adventure game Radio Shack has just re leased that was written origi nally by Datasoft The game has moving graphics and offers clues that you piece together to find a lost oil field Radio Shack has released several new games in recent weeks Two of these on Radio Shack store racks right now are Desert Rider and FlightSim I The Dallas Quest requires 64K and sells for 29 95 Desert Rider requires 32K and sells for 29 95 FlightSim I requires 32K and sells for 24 95 Saguaro Software has a new program that will send
59. editor and enter OS 9 by us ing just one command T S Edit comes with a well organized 33 page manual It is arranged in a logical order covering everything from loading the pro gram and its editing commands to a glossary of keyboard codes and a summary by func tion of all T S Edit commands The complex ity and variety of these commands make it important to read all sections of the manual for a full understanding of command usage Istrongly recommend that userspracticethe commands Although the documentation We carry a full line for the Atari Apple amp C 64 covers everything it skimps on examples of usage It expects its readers to bring some understanding of text editors with them Once you have a working knowledge of the program s editing commands the quick reference guide that comes with the docu mentation is very helpful T S Edit is a powerful and sophisticated text handling program It has all the features you need and some added options for more serious editing Its ability to run on OS 9 and Radio Shack DOS makes it a good invest ment for OS 9 users And despite a lack of explanatory examples its documentation is well organized and generally thorough The program s extra features high resolution upper and lowercase display and horizontal scrolling make it a bargain and go a long way in contributing to its overall ease of use and performance I recommend T S Edit to anyone who doesn t mind spending a lit
60. exactly as written in Listing 1 since it is vital to the save routine For a bigger challenge at a higher speed activate the POKE switch in line 1280 by removing the remark symbol Our best score is 25 786 Try to beat it I See program listing on page 48 Address correspondence to Jim McDowell JML Software Design Northgate Road Apt 231 Burlington VT 05401 Pull Out HOT CoCos Program Listings 64K Modification Revisited 80K Color Computer Doctor ASCIl Mindbusters Missile Defense Pie In The Sky Investment Analysis Fabulous Fonts For The Gemini 10X How Your CoCo Adds U l instant 64 Modification Revisited Program Listing 1 Memory Test 1f FOR I 32382 28 READ X 39 POKE I X 4 NEXT I 5g EXEC32382 68 DATA 26 88 142 128 8 166 132 183 79 DATA 222 148 DATA 3 28 99 DATA 175 57 1gf CLS PRINT 11g PRINT E BOARD TEST 128 PRINT WRITE TO ROM AREA R 32497 255 223 167 128 183 255 255 8 38 241 183 255 22 13g 14g 15g 16g 17g 9g PRINT WHICH ONE AS INKEYS IFAS THEN 14 PRINTAS IF AS R THEN 249 IF PEEK 49152 68 THEN S amp HE ELSE S amp HCpgB 188 FOR I S TO amp HFEFF 198 IF PEEK I lt gt THEN PRINT TEST FAILS HEXS I G 0 011 28g POKEI 255 IF PEEK I lt gt 255 HEN PRINT TEST FAILS AT HEXS I GOTO11g 21 PRINT0Gf HEXS I
61. hae OVERALL RATING 3 Hardware Te Sound Speech Cartridge is Radio Shack s entry into the talking CoCo craze It is a ROM pack device based on Gen eral Instrument s PIC 7040 510 System Soft ware Its microprocessor controls separate speech and sound generators and routing of sound through the CoCo to the TV output It hastext to speech capability can play three part musical harmony and create complex sound effects The Sound Speech Cartridge is designed for use with game education and other ap plications it is also programmable It has 16 sound and speech storage buffers eight of each which provide space for eight 64 byte sound effects and eight 64 character sen tences The Cartridge also offers three voices in a nine octave range The Sound Speech Cartridge works with disk cassette and ROM pack programs but disk and ROM pack users need a Y cableor a multiple ROM pack interface It is compati ble with JDOS as well as Disk Extended Color Basic You generate speech with this synthesizer by preprogramming allophones small units of speech sounds or syllables that you store as hex or decimal codes in the buffers You generate sound effects by modifying the built in commands to redefine the channel amplitude pitch and duration or by manip ulating the Cartridge s registers Performance The speech function of this synthesizer sounds mechanical lacking the timbre and inflection that we ar
62. ideal Once you have worked with a word processor or other full feature applica tions program you become accustomed to the joys of full screen editing such as the ability to move the cursor freely over a screen corny as in the first chapter s claim that the book has a sequel titled The Color Computer Meets the Mad Scientist This is writing in the tradition of David Lien s classic TRS 80 User s Manual for Level which many pro grammers cut their teeth in the late 1970 s Color Computer Graphics has two sections The first covers how to use graphics commands and the second explores programming techniques The book also hasa slick four page center section of color screen photos showing results frorn list ings given in the book Barden has something for everyone He does not for example skim over Color Basic but covers it thoroughly in its own chapter And he explains Extended Color Basic graphics methods so that almost everyone can un derstand them and begin using them creatively Color Computer Graphics has new ideas suchas if you create a circle with a large enough radius in Extended Color Basic it flattens against the boundaries of the screen making a box witha short command The book s many interesting pointers include how todisplay extra colors in oth erwise color limited modes how the draw com mand can give you many unusual shapes without using much memory how to use serigraphic modes the best of which lets you
63. information is provided in the Sys tem Requirements box included with each article that has a program listing This box gives the minimum requirements to use the program If for instance the box reads 16K RAM Color Basic the program should also work on 32K or higher Extended or Disk Ex tended Color Basic CoCos Once you ve established that the program will work on your CoCo read the article thor oughly Sometimes it will include informa tion vital to typing in the listing What You See is What You Get We print all Basic program listings 32 characters across just as they appear on your video screen Type in the listings ex actly as it appears in the magazine being particularly careful with spaces and punc tuation If you do this the 32 character for mat will aid in proofreading what you have typed in by letting you match beginning and ending characters on corresponding lines If youhavea line that ends on a character other than what appears in the magazine go back and check for a typo Common Errors Some characters are easier to confuse than others when you are typing in program list ings And since your Color Computer inter prets everything literally the smallest error can crash a program Below is a list of char acters commonly confused with one another zero and the letter O colon and semicolon 10 HOT CoCo June 1985 lowercase l and the numeral one uppercase B and the numeral eight Weird Charact
64. iron with small guage 71 mm is fine 50 50 or 60 40 rosin core solder Where wire is called for use 30 guage insulated wire Where 4164 dynamic RAMs are called for they must be of the 128 cycle variety NEC chips are suitable but TMS chips will not work because they require a 256 cycle refresh The difficulty ratings are easy no soldering required moderate some soldering required and difficult cutting oflands or desoldering necessary Use the following procedure to prepare your CoCo for each upgrade modification Open the CoCo by turning it upside down and removing the five six on theCoCo 2 screws Be sure to remove the screw under the warranty seal Place a piece of masking tape over each hole so you won t lose the screws Turn the machine upright and lift offthe top Unplug the keyboard and put it aside After clipping the two plastic cable ties remove the metal shield covering the section of the board that contains the 6809 CPU central processing unit 6883 SAM syn chronous address multiplexor the 6821 PIAs peripheral interface 64K Modification adaptors the 6847 VDG video display generator and the memory chips Note The CoCo 2 may not have a shield 4K to 16K Easy This modification applies only to C D or E boards Remove the metal shield The eight 4K RAMs are identified as U20 to U27 on the board Replace these with 4116 dynamic RAMs making sure that the rounded notches on the chips match the not
65. is to trap the star so that it can t move not obliterate it Two joystick equipped play ers can work cooperatively to catch the star rather than competing a fresh approach The rules might seem complex at first but children make early satisfying plays without much knowledge of what to do In time they learn the finer points of play too The in struction booklet is very good young chil dren find it easy to understand In the back of the booklet there are suggestions for non computer activities with mazes including blindfold travel of a labyrinth made of paper towels and a board game version of a game called Fox and Geese The essence of Star Trap is a star on the loose in a maze Players control a graphic symbol which they use to pursue and trap thestar Two players can win by trapping the star between them The graphic symbol can also leave a single X or a trail of Xs behind it that impede the constantly moving star Other features of the maze are available through menu selection orin the higher lev els There are several gates that confer a new status on the star and the graphic symbol as they pass through them Included among these are speed gates slow gates jump gates invisible gates and magic gates The wily star is fast and can be tricky to catch It amuses kids because it seems to take on its own personality If playerstire of the form of the maze they can set their ideas in motion by using a sim ple maze build
66. letter on disk drive timing programs HOT CoCo April 1985 p 13 misses the point completely When you calibrate the speed of a drive its long term stability is not dependent on your accuracy but on the quality of the mechani cal and electrical components in the drive You calibrate a drive to make it compatible with someone else s disk so that you can ex change disks Therefore you must use a common time standard against which you measure the calibration Even if your program is accurate no small matter your CoCo s master oscillator may not be You need a high quality frequency counter that has already been calibrated against a laboratory standard to first cali brate the oscillator It would be better to use the frequency counter to calibrate the drive in the first place In any case the tolerance variance in the index hole location on different disk results 16 HOT CoCo June 1985 in such a deviation in measured speed that you need a certified reference disk to do a drive calibration Robert Gault Grosse Pointe Woods MI Clubhouse Havea Color Computer club Let prospective members know about it through a letter to the Editor N E CoConuts Correction We would like to point out an error made in HOT CoCo s Worldwide User s Group List HOT CoCo February 1985 p 49 The information listed in the table is out of date Our permanent address is New England CoConuts P O Box 6604 Providence RI 02940 6604
67. limitation of the Color Computer and give you only low res control Others attempt to overcome the limita pad into this new input and you have a whole new kind ol control The dif ference is remarkable A DIGITIZER OPTION We studied all the video digitizers available and picked the best ot them to link with CoCo Max The DS 69 trom Micro Works was our choice This op tional device lets you capture the image trom any video source video recorder camera etc on your Color Computer s a 5 extended Color Computer You ll need a Radio Shack or equivalent joystick mouse or touch pad Disk systems re quire a Multi Slot Intertace or Y Branching Cable THE COMPLETE COCO MAX SYSTEM with software on DISK 69 95 with software on CASSETTE Available 69 95 Y BRANCHING you have a disk System but do not have a Multi Slot In terlace use this economical 40 pin 1 male 2 temale cable to connect the CoCo Max Hi Res input unit and vour disk controller to your 27 95 COLORWARE TOLL FREE ORDER LINE 800 221 0916 V SA Woodhaven NY 11421 718 647 2864 gt ORDERING INFORMATION ADD 3 00 PER ORDER FOR SHIPPING AND HANDIING 0 5 ADD 3 00 EXTRA SHIPPING AND HANDLING FOR CANADA IS 5 00 WE ACCEPT VISA MASTER CARD 5 CHECKS N Y RESIDENTS MUST ADD SALES TAX Colorware Inc 78 03B Jamaica Ave The C
68. m 2 machine language program use CLOADM 8 HOT CoCo June 1985 Back Issues Yes back issues of HOT CoCo are available for all months This list shows the features in each issue June 1983 The CoCo word processor a serial to parallel interface project and the adventure Cavehunt July 1983 How to upgrade your CoCo to 64K cure video RFI August 1983 Speech synthesis via software get more colors build a color monitor driver September 1983 Disk utilities hi res character generator October 1983 Animation techniques ROM di sassem bly part 1 November 1983 Nuclear submarine simula tion ROM pack primer banner printer December 1983 World capitals quiz program talking spelling tutor vocabulary building pro gram January 1984 Programs for the businessman and investor ins and outs of database manage ment February 1984 CoCo aided circuit design sim ulate Extended Basic in Color Basic change your CoCo s vocabulary March 1984 How adisk stores information cre ate your own wordsearch puzzles dental medical bill balancer April 1984 Peripherals buyer s guide how to shop for a disk drive disk fix utility Lisp inter preter May 1984 05 9 review financial transactions tracker homebrew spelling checker CoCo Re versi game June 1984 Horse racing and stock market sim ulators July 1984 Do it yourself lowercase mod varia ble cross referencer the game Python August 1
69. more speed than any similar system much more than you ever imagined possible And you can do it in black amp white or color File Edit Goodies Font Style You can Brush Spray or Fill with any Col or Shading or Pattern Use Rubber Band Lines and Shapes seuare rectangle cir cle elipse etc to create pertect illustria tions with speed and ease There s a Pen cil an Eraser and even a selection o Caligraphy Brushes And as vou can see CoCo Max can do lot with text All oi the newest special are there Trace Edges Flip Invert Brush Mir rors etc And all ol the very latest super capabilities like Undo which automatically reverses vour mistakes anc Fat Bits which zooms xou wav in on am part o vour subject to allow dot tor dot precision File Edit Goodies Font Style Revert Print Dreft Print Finel Print THE BIG PICTURE cept for the color computer That meant designing not just software but hardware The large image box in the middle o the too it meant thousands of hours of pure machine language programming Rarely has this much effort been applied to one product for the Color Computer File Edit Goodies Font Style COCO MAK gives ability to create ing in many styl Su UPPER case lower case Middle ION gt 2191 caca 5 All the sophisticated power of the bigger systems is there Icons Pull Down Menus lull Grap
70. pause at page bottom page numbering baud rate so you can run your printer at top speed and Epson font Typewriter feature sends typed lines directly to your printer and Direct mode sends control codes right from the keyboard Special Epson driver simplifies use with MX 80 Supports single and multi line headers and automatic centering Print or save all or any section of the text buffer Chain print any number of files from cassette or disk File and I O Features ASCII format files create and edit BASIC Assembly Pascal and C programs Smart Terminal files for uploading or downloading even text files from other word processors Compatible with spelling checkers like Spell n Fix Cassette verify command for sure saves Cassette auto retry means you type a load command only once no matter where youare in the tape Read in save partial save and append files with disk and or cassette For disk print directory with free space to screen or printer kill and rename files set default drive Easily customized to the number of drives in the system Editing features Fast full screen editor with wordwrap block copy block move block delete linc delete global search and replace or delete wild card search fast auto repeat cursor fast scrolling cursor up down right left begin line end line top of text bottom of text page forward page backward align text tabs choice of buff or green background
71. program has the same features as Child Writer but it can be networked It sells for 59 95 Other Child s Play programs include List Manager Proofreader and Master Proofreader The com pany also has several other Child s Play programs in the works Educational Micro creates ed ucational software for the Color Computer and Apple markets Their programs are designed to teach preschool through adult students how to spell read think logically and perform math functions The company markets several programs Speak Up 3 3 speaks through your television s speaker and requires no addi tional software It comes in ver sions for 16K or 32 64K Color Computers and sells for 29 95 on cassette Dr Words and Dr Stan use game forrnats to teach children and adults how to spell They require 16K and sell for 47 95 on cassette and 49 95 on disk Harold s Castle is a text adventure game that helps teach reading comprehension and logical thinking for ages 10 and up It is an educational pro gram that can be used by the entire family Harold s Castle re quires 32K and sellsfor 22 95 on cassette and 24 95 on disk Contact Educational Micro for more information Summer is just around the corner For kids all over that means weeks of fun exercise and learning at summer camp are not far off The American Camping Association ACA publishes an annual reference book for summer camps to help parents make the right decision in se
72. recommend 22 guage stranded Here are the part numbers for these RS 26 2014 19 95 four pin DIN to DB25 modem cable RS 26 3020 4 95 four pin DIN to four pin DIN printer cable RS 274 007 1 49 four pin DIN plug RS 7274 1547 2 99 DB25P connector RS 274 1549 1 99 hood for DB25P optional The switch setting indicates that when you turn on your system the printer is deselected and will not print until it receives an XON character The printer then prints until it receives an XOFF char acter This is known as XON XOFF protocol Below is a listing of the Circle Reader Service card 4216 TRS 80 MOD Ill COCO T 99 4a TIMEX 1000 OSBORNE others GOLD PLUG 80 Eliminate disk reboots and data loss due to oxi dized contacts at the card edge connectors GOLD PLUG 80 solders to the board edge con nector Use your existing cables if gold plated i 9 old Plug 89 817 498 4242 COCO Disk Module 2 16 95 Ground tab extensions new INCL Disk Drives all R S As 57 95 Gold Disk Cable 2 Drive lt 2995 Four Drive Cable equ 39 95 Can Mex 4 USAshipping 1 45 Foreign 7 Don t wait any longer 5 TAX Available at your favorite dealer or order direct from 22 BOX 14 KELLER TEXAS 76248 817 498 4242 MC VISA trademark Tandy Corp 20 HOT CoCo June 1985 switches An asterisk indicates that the switch should be changed tothat positi
73. side issues and extra work The big gest pitfall in statistical compilation is taking on more than you can manage For a survey put in a bid for making all the questions ob jective with multiple choice answers Advise your clients to leave one question or section where respondents can address things the questionnaire neglects When you compile a survey do the sums averages displays and whatever else your customer asks for but don t write a sum mary paragraph or conclusion The wording of the conclusion of a statistical analysis often determines its interpretation Your clients will want to do this themselves But it is important at the outset for you to know what your clients are looking for so that you don t spend several hours working on insig nificant side issues Address correspondence to Terry Kepner P O Box 481 Peterborough NH 03458 Terry Kepner is a free lance writer and programmer He also writes monthly columns for 80 Micro and Portable 100 magazines He has been writing about computers since 1979 Linda Tiernan is a librarian with a master s degree in bio medical research She has worked with computers since 1980 Why do more CoCo owners choose REAL TALKER Thousands of Real Talker owners know Real Talker beats ALL other Coco voice synthesizers in ease of use and flexibility And NO other Coco talker has a clearer more intelligible voice That s quite a lot of advantage when you consi
74. ten numeric keys you get all four cursor keys Clear decimal point Comma Enter and all four standard math keys Autoshifted Add and Multiply One keystroke is all it takes to enter the Add and Multiply keys without shifting Meanwhile the colon and semicolon are still instantly accessible from your main keyboard What s more NumberJack has its own shift key to provide convenient access to all the numeric shifted symbols Quick and easy Installation The completely self contained NumberJack keypad can be installed In five minutes or less No soldering no drilling and no special tools are required Comes with complete instructions a 3 foot plug in cable and all necessary connectors HJL performance You can count on It Bounce Proof keyswitches are rated for 50 million cycles per key minimum and mounted on a solid aluminum baseplate Contacts are covered by a protective membrane to guard against dirt dust and accidental spillis The NumberJack is bullt so well it carrles a full c TF OY Ordering information Specify model Original F version or CoCo 2 modei f Payment by C O D check MasterCard or Visa Credit card customers include complete card number and expiration date Add 2 00 tor shipping 3 50 for Canada New York state residents add 7 sales tax Dealer inquires Invited Circte Reader Service card 48 one year warranty and the exclusive HJL Products 1
75. that descend almost si multaneously in the higher levels Zookey s directions are clear and include a typist s diagram for the CoCo keyboard The diagram and directions make it easy to figure out the proper key fingerings As a game Zookey s concept becomes apparent quickly lt is easy to use Although the documentation does not mention it pressing the enter key pauses the game Pressing it again restarts the game Zookey commands a high interest level It is fun even if you don t want to learn to type puter back to Extended Color Basic The only drawback is that you can t make a switch from software because switching DOSes forces the computer through a cold start for resetting pointers Because of the cold start you lose whatever is in memory Dual DOS operates flawlessly If you take advantage of everything it offers it will give your computing a whole new flavor RGS Mi cro had the JDOS controller in mind when creating Dual DOS Card and J amp M s product works very well with it The card will proba bly work with controllers manufactured by other companies too Dual DOS also works with other DOSes on a ROM or EPROM chip that you plug into the controller The ability to have different DOSes available for different applications including perhaps a DOS tai lored to suit your specific needs gives the CoCo a versatility that will spoil The Dual DOS Card is manufactured by RGS Micro Inc Main St Derby Line VT
76. the pack and turn on the computer CLOADM and EXEC Auto Page then EXEC 49152 and you are in Color File If after you complete the listing you wish to print another list just press the reset but ton to get back to Basic reposition the paper POKE 32760 0 to reset the counter and EXEC 49152 to put you back in the ROM program The disabling technique works for other ROM packs too I have used it with Videotex to save the buffer to tape Robert E Niesyn Cromwell CT Negative Image Dumps In the February 1985 issue HOT CoCo tured an article Do it Yourself Dumps p 40 dealing with a screen dump utility R Steven Berry s program works well but it doesn t allow my Radio Shack DMP 105 printer to produce a negative image To switch to a negative image on the DMP 105 insert these four lines 54 FOR X amp H3FB6 TO amp H3FBE 55 READ A POKE X A 56 NEXT X 260 DATA 182 62 171 67 138 128 126 62 65 Change line 140 to 140 DATA 38 239 126 63 182 18 132 213 133 64 Lines 54 56 new routine to do LDA STORE and ORA 80 and then return to the main loop at 3E41 Line 260 is the data for the routine at 3FB6 The change in 140 routes the processor to 3FB6 and also moves the COMA to the routine at 3FB6 put in an NOP where the COMA used to be Since I moved the COMA from amp H3E41 to 9 you have to POKE amp H3FB9 with 18 to get a negative image To return to regular mo
77. this size tend to fit very snuggly I found it necessary to use a hobby knife followed by a thin screwdriver to open a little space between the chips and their sockets Then I used a tweezer style IC puller to extract the chips with a rocking motion while steadying the printed circuit board with my free hand The 16 pin RAMs are easy to remove by comparison Although the instruction sheet doesn t point this out it is a good idea to observe the usual precautions against static electricity which could harm your computer Touch a grounded metal object before handling your chips When you have pulled them out keep them on a conducting surface such as a sheet of aluminum foil When you have removed the original chips insert the 10 new IC socket assemblies These chips plug into your board and your original chips plug into them A little care is required to ensure that they are properly oriented and that all the pins make contact with their sockets Then you install the bank selector switch on the Dynamic ME 128 64 and replace the PIA and SAM Dynamic recommends testing the new memory bank at this point before you replace your original RAM chips When you turn the computer on only one bank will be properly initialized It is necessary to throw the switch to the other side and press the reset button to initialize the second bank Dynamic offers a solution for purchasers whose nerve fails them the company will do the upgrade for a modest fee
78. to judge color I looked at more colorful applications I preferred the TV Buff with a color monitor to some other monitor adapters I ve seen The colors on the low resolution color monitor I used were vivid and sharp without any blotchi ness or bleeding The picture quality of TV Buff Ile with the monitor mentioned above was far superior to that of a color TV Neither the color nor the monochrome in stallation of the TV Buffllc showed any signs of snow ghosting line interference motor noise or any of the many other problems as sociated with the use of a TV and a computer The sound quality was consistent with what you normally hear from a TV A minor note I found that shielded cables aren t necessary for the video output A good quality un shielded patch cord works fine Summary The TV Buff is a good product If you don t anticipate needing both monochrome and color output it will serve you well Al though installation of TV Buff Ilc is more dif ficult than that of some other video adapters it is also more permanent That can be an advantage Some other adapters leave you wondering whether their connections are really tightenough If you plan to do a lot of word processing on a monochrome monitor check into another video driver But if you arelooking fora reliable video driver for your color monitor this might be the TV Buff is manufactured by Green Moun tain Micro Bathory Road Box R Roxb
79. were two bit drop errors in the Sat ellite program listing In line 760 insert a less than symbol lt after CL In the third 32 character line of line 1430 insert a changing the motion command fromM3098 to M30 98 If North America doesn t show on your map check the COLOR statement in line 620 of World Map and line 1 200 of Satellite Track ing Also check your PAINT commands The World Map program uses colors 6 cyan and 7 magenta from color set 1 To get blue and green you must adjust your TV s tint control I chose these colors instead of colors 1 green and 2 blue of color set 0 to allow easy modification into a high reso lution black and white map by changing PMODE 3 to PMODE 4 in line 30 If you prefera black on green hi res map in either program change the SCREEN com mands to SCREEN 1 0 in lines 105 and 250 of World Map and line 380 of Satellite Track ing To then use the plotting routine in World Map with either hi res screen add the follow ing line 265 IF PPOINT XP YP 0 THEN CIRCLE XP YP 8 5 GOTO 100 Changing the 8 to a 5 reduces the size of the circle drawn but change the first 8 in line 270 too I hope these fixes are helpful to those using the programs R Dewain Poe MC 10 Graphics Available Does anyone have a good graphics pro gram for the MC 10 that uses the control keys supports all eight colors offers LOAD and SAVE features and includes a screen dump routine I hav
80. will be in bank2 with proper video All this assumes that you have run Listing 1 to store the machine code Subroutine 4 called by EXEC 32383 transfers from bank 2 into bank with the video properly set You cannot use bank 2 for high resolution graphics Using the Method To set up for Basic in the second RAM bank enter and run List ing 1 You will be in RAM bank 2 when the OK prompt returns The Basic program operates in two passes On the first run through it stores the machine anguage code starting at address 32300 It attempts to store at address 65068 but those addresses are not in RAM yet Next the program uses the USR function to execute the first machine language subroutine which copies ROM into RAM and sets memory map 1 The program then loops back and stores the machine language subroutines again This time the addresses starting with 65068 are in RAM and the code is stored After this the program switches back to memory map O You now have two equally ranked banks of RAM again but now they have the machine code stored at identical locations Finally the program calls subroutine 2 which copies RAM bank 1 identi cally into RAM bank 2 and exits back to Basic in RAM bank 2 58 HOT CoCo June 1985 To reenter RAM bank 1 type EXEC 32383 and press enter EXEC 32353 puts you into RAM bank 2 You can CLOAD list and run programs in each RAM bank independently Just remember that high resolution graphics will not respond pr
81. you want to appear below the graph Press the enter key if you have noth ing to submit When you type 7 a complete listing of the sectors with their respective percentages appears on the screen and you see the graph drawn 177 Il Tm I sample Pie Graph Video Screen The edit mode displays a complete list of the data you have submitted A black cursor is in the left margin opposite the first entry Use the up and down arrows to move it to the appropriate line and the right arrow to change the entry You must resubmit both the sector name and the amount If you wish to delete a sector position the cursor and press D To add a sector move the cursor to the last entry pressA and the number of sec tors you re adding The program assumes you have only one new entry if you wait m IN 59 CGU gi IECUR 065 COLOR COMPUTERS COLOR COMPUTER DISK DRIVE AND PRINTERS 26 3136 16K Extended ColorComputer 2 26 3127 64K ExtendedColor Computer 2 26 3029 Disk Drive 0 for Color Computer 26 1161 Disk Drive 1 2 3for Color Computer 26 1276 DMP 10580 0 Matrix 26 1271 DMP 11050 25cps Triple Mode Printer 26 1255 DMP 120 120cps Dual Mode Matrix 26 1257 DWP 210 14 cps Daisy Wheel Printer OTHER PRINTERS AND ACCESSORIES EPSON Printer OKIDATA Printer STAR GEMINI 10X Printer COMREX CR li Daisy Wheel Printer 8510 Prowriter
82. 0 or the fourth line down where the blob will be stored There fore we use LDA 128 LDB 32 and LDX 480 With those registers loaded the STA X translates into an instruction to put the blob in A at the address in X 480 the plus sign continued on page 83 June 1985 HOT CoCo 79 Presenting instant CoCo s Best Programs of 84 Here they are 29 HOT CoCo programs that came through 1984 with flying colors The Best of 84 29 first class ready to run Color Computer programs from HOT CoCo all on one high quality cassette complete with easy to read documentation It s all here graphics utility and game programs as well as applications for business home and education The perfect complement to your instant CoCo library and the ideal software package for every Tandy Color Computer user And you get the entire Best of 84 package for just 16 47 that s 29 programs for less than 60 cents each The Best of 84 honor roll features such outstanding programs as Stock Transactions Tracker e Variable Cross Reference Graphics Builder Personal Money Manager e Flashcards Outstanding variety top quality The best programs from an entire year of HOT CoCo It s a package so incredible we know you ll be de lighted Become one of the first to own HOT CoCo s Best of 84 by returning the coupon or attached order card today And while you re at it you can order another class act The Best in Comput of 83 s
83. 00 635 0300 Tell them I saw it HOT Circle Reader Service card 93 June 1985 HOT CoCo 29 REVIEW by Scott L Norman 30 HOT CoCo June 1985 Photo by Edward Judice Find out whether one of these two memory expander kits will work for you O the years the Color Computer has experienced many significant hardware upgrades One such upgrade currently making the rounds is memory expansion kits that increase capac ity to 96 or even 128K of RAM Several brands of these kits have appeared recently on the market and while they don t increase the space available to individual programs they do open up a host of interesting possibilities Memory upgrades let you keep two or three 32 to 64K programs loaded in RAM and ready to go You can jump from one program to another by flipping a switch or by using one or two Basic commands This review describes my experience with expansion kits from Dynamic Electronics and DSL Computer Products Because their approaches to treating the CoCo s expanded memory resources are different this should give you a good overview of what is pos sible in memory upgrades To begin let s look at how a machine purported to peak at 64K is manipulated to handle larger blocks of memory The Expandable CoCo The Color Computer can address only 64K of memory at one time This limit is imposed by the addressing scheme used in the 6809 microprocessor and its support chips But its setup still leave
84. 12 733 1110 Reader Service 564 Syntel 530 Plyon Drive Raleigh NC 27606 919 828 4626 Reader Service 565 Tandy Corp 1400 One Tandy Center Fort Worth TX 76102 Reader Service 566 TCE Programs Inc P O Box 2477 Gaithersburg MD 20879 301 963 3848 Reader Service 567 Vidtron 4418 East Chapman Ave Suite 284 Orange CA 92669 714 639 4070 Reader Service 568 CoCo for Hire bu Terru Kepner and Linda Tiernan Statistical Data Compilation Part Il E month we began a discussion of sta tistical data compilation services and how to start one which is not as hard as it might sound This month we conclude our look at this kind of work at home business with instructions for running one Tools of the Trade Data compilation businesses don t require a great deal in the way of hardware A Color Computer and a printer are a good start And either cassette or disk based systems will work Your CoCo s memory should be 32 or 64K preferably the latter You can compile small surveys of a hundred or so responses in 16K not including the memory required by your spreadsheet program but for any thing complex you need a larger memory ca pacity The disadvantage of cassette based sys tems is that the software available for them often has fewer features Some disk based software lets you refer to data in spread sheets stored on disk allowing you to con catenate spreadsheets into a larger than m
85. 128K 299 95 40 Track Dual Head with Case Power Supply Cable Graphix Plus 283 00 Controller Instruction Booklet Diskettes Graphics Plus II 355 00 Above with Dual Drives in One Cabinet Serial Port 84 95 128 Memory Upgrade Kit Monochrome Board with Parallel Printer 210 00 Dual DOS Switch Quadram Quadboard w 128K sess aen 59 95 With Second DOS System JDOS RSDOS Micro DOS and Booklet Quadcolor 1 Quadcolor 11 TRS 80 HARDWARE MISCELLANEOUS One Sing Disk Drive Case Power Supply can Hi eS Soe E 3 rom 159 Model Easy to Install Disk Drive Systems Memory Upgrades 4116 4164 startingat 1 50 ea Parallel Printer Buffers 8K 149 95 Floppy Disk Drive Cable ALL IN STOCK ITEMS SHIPPED WITHIN 24 HOURS SAME DAY SHIPPING D ie a s PROVIDED BY REQUEST WITHOUT ANY EXTRA HANDLING CHARGES Heath Zenith 2 Drive Cables Shielded 2495 5 SOFTWARE SUPPORT INC Edgell Road Framingham MA 01701 617 872 9090 Telex 383425 Hours Mon thru Fri 9 30 am to 5 30 pm 5 Sat 10 am to 3 30 pm SERVICE POLICY Our Professional Technical Staff Is Available To Assist You Monday Through Saturday WARRANTIES Up To One Full Year Parts And Labor Floppy Disk Drive Power Supplies Five 5 Years SERVICE 24 Hour Turn A Round On All
86. 2 686 1520 TELEX 620430 mm COCO for Hire other option for magnetic media is bulk eras ing which requires a relatively inexpensive tool called a bulk eraser that is designed to wipe your disks and cassettes clean of data If you give your data storage materials to your clients you might want to consider us ing an encoding program to prevent anyone else from using the data and spreadsheet templates you develop This also ensures that your clients will return to you if they want to reexamine the data Billing is another area of a statistical com pilation service for which you must set and strictly adhere toa policy stern with your self and your clients If you charge for an hour be sure that you have done an hour s work Itemize your bills Show your cus tomers that you worked for x amount of hours analyzing format y amount of hours setting up format z amount of hours input ting data w amount of hours printing and so on This detail gives your customers a clear understanding of the service you pro vide for their money Remember not to step out of your role as an intermediary Most people dislike statisi cal work If you offer to do too much of the groundwork you might find yourself in charge of the project Ifa customer wonders why you can t add three more questions to a questionnaire that has already been printed spell out the reason or find a way to add the questions for an extra charge Don t waste time on
87. 2 IFX lt THENX B 438 DRAW BM STRS INT X 2 8 G2 435 IFSBS THEN475 441 FORX l1TOLEN SBS 45g DRAWLS ASC MIDS SBS X 1 32 46 DRAW BR4BU7 47 NEXTX 475 IFSX16THENCDz4fELSECD 14 48 DRAW BMB STRS CD C2 499 FORX 1TOS 598 DRAWLS X 64 32 BR4R1BR8BU7 505 IFSS X THEN569 518 FORA ITOLEN SS X 530 DRAWLS ASC MIDS SS X A 1 32 549 DRAW BR4BU7 558 NEXTA IFLEN STRS INT D X 2THENDRAW BD7BR4BU7BR4 LS ASC 9 32 BU7BL4 CL 1 IFLEN STR SC INT D X 2ANDINT D X NDRAW BD7BRA4BU7BRA LS ASC 9 32 BU7BL4 CL 2 551 D D X 199 D INT D D D 199 LS STRS D FORC 1TO6 CL AS MIDS 1 1 64 32 FP 1ELSEIFAS THENAS 552 IFAS THENAS CHRS 64 32 D RAWLS ASC AS 32 BR4BU7 ELSEDR AWLS ASC AS 32 BR4BU7 553 NEXTC DRAWLS ASC 32 FF 9 CL 9 569 STRS CD X 8 578 NEXTX L CD X 8 IFL lt 155THENL 155 571 IFNTS THENS89 572 5 8 255 lt DRAW BM STRS INT X 2 STRS L ELSEDRAW BM STRS INT X 2 STRS L 573 1 5 574 DRAWLS ASC MIDS NTS X 1 32 575 DRAW BR4BU7 588 AS INKEYS 599 AS INKEYS IF 5 59 5 E789 788 POKE65495 g CLS PRINT 3 33 33 3 33 33 PEICES OF PIE 3 3 3 33 3 3 3 798 CC 1 PRINT CHOOSE ONE REATE A FILE AVE TO
88. 25980 PRINT PRINT Y OU VE SCORED IN THE TOP TENI 2499 PRINT PLEASE ENTER YOUR I NITIALS 2598 INITS ADD TO LIST 2519 U T 9 PRINT 73 U 32 gt 3 FOR V g TO 2 2528 FSS INKEYS IF FSS CHRS 32 THEN 1 IF B 24 THEN B P 1191 U 32 V 42 A A 64 A GO TO 2529 ELSE 2529 2538 PRINT 774 32 U V FSS MIDS SLS T 1 V 1 FS NEXT V GOSUB 2590 254 POKE LINE 1999 W UPDATED 5 LIST 255g FOR TO 89 POKE T Q ASC MIDS SLS T 1 1 NEXT T 256 PRINT 419 HIT ENTER TO PLA Y NEW GAME HIT Q TO QUIT T HIS PROGRAM 257 FSS INKEYS IF FSS CHRS 13 THEN 148g ELSE IF 55 0 THEN 2628 ELSE 2579 258g DISPLAY TOP 19 LIST 2599 CLS PRINT TOP TEN SCORES PRINT 268g FOR U 1 TO 10 PRINT USING T 6 U MIDS SL U 9 8 9 NEXT U RETURN 2628 CLS PRINT TO SAVE THE TOP TEN SCORES JUST SAVE DEFENSE II OVER ITSELF 2625 OPTIONAL LINE FOR DISK USERS TO AUTO SAVE TOP TEN LIST 2630 IF amp 68 THEN SA VE DEFENSE2 277 END 2788 INSTRUCTIONS 2798 CLS PRINT THE OBJECT OF T HIS GAME IS TO DEFEND YOUR SIX CITIES FROM MISSILES AND Y OUR FORTRESS FROMALIENS TO DO THIS YOU MUST POSITION YOUR S IGHT ON A MISSILEOR THE DARKENED PORTION OF AN ALIEN AND FIRE YOUR LASER 288g PRINT PRINT THIS GAME CON SISTS OF FIVE SKILLLEVELS WITH I NCREASING MISSILE AND ALIEN SPE EDS AS THE LEVEL INCREASES TH E FINAL VALUE OF A SCORE ON A MI SS
89. 4 1 6 1 8 2 5 10 Prop 2 6 8 7 2 7 DE SEL 2 8 OFF ON I bought a game that automatically executes after 1 LOADM sit How is this done Can I fix a program to do this without disassembly or patching Warren Barnes San Jose CA One way is to put a loader program into the area that Basic suses for the get next character routine Basic doesn t use this area while loading a file and when loading is finished Basic will encounter the loading program when it tries to get the next input Listing 1 PUTLDR is a Basic program that will put such a loader in a machine language disk file It does not copy the file it actually modifies it on the disk so have a backup of the disk before you try it PUTLDR is a utility that gets the load end and transfer addresses of a program and adds or removes the auto loader from the file See program listing on page 46 NumberJack The HJL Numeric Keypad for Color Computers Cuts number crunching down to size Now you can enter and revise data twice as fast in spreadsheets accounting and other number Intensive applications with the HJL numeric keypad NumberJack A sleek addition to your personal computer NumberJack has a streamlined low profile ABS enclosure that measures just 5 1 2 x 7 1 2 x 2 1 4 max The full travel keyswitches have the same comfortable feel and reliability that have made the HJL 57 everyone s favorite CoCo keyboard Much more than numbers Besides the
90. 44 G The 80K Color Computer Grace p 57 H Pie In The Sky Riegel p 59 I Investment Analysis Chakravarty p 62 J Fabulous Fonts Stoloff p 66 K How Your CoCo Adds Up Tipps p 70 L 6809 On Line Ballard p 78 M Assembly 101 Perotti and Perotti p 79 N The Learning Page Kipperman p 84 O Product News Finnie p 88 P CoCo For Hire Kepner and Tiernan p 91 88 HOT CoCo June 1985 and More such as word processing spread sheet calculating and database management are the ultimate goals of teaching computer fa miliarity in the schools Child s Play is a series of pro grams that perforin business functions Child Writer and Memo Writer for example are companion word processors Child Writer uses on screen menus and mouse technology It has easy to use features for young users As students learn and progress with Child Writer they are preparing themselves for Memo Writer which has sev eral additional features Both word processors require 32K a disk drive and a mouse or joy stick Child Writer sells for 44 95 Memo Writer sells for 49 95 TCE has an upgrade policy that allows you to trade in your TCE software You can send in your old software the difference in price between the programs and 7 50 to trade up to more expensive programs Ted Ma laska one of TCE s team of teachers and software devel opers stresses that the com pany also offers the Network II Child Writer This
91. 5 Alphacopy It is nice to have on aiphabetized Cisk directory but if that should crash it doesnt help tell you where programsare Aiphacopy will fullyalphatetize your disk that 5 the programs alphatetical order Each program will be written on the same or conseculive sectors thus moking rebuilding of the disk much easier with the other Currently available disk zapping utilities ALPHACOPY will also allow you to format disks up to80 tracks if yourdnveallows thus giving vou mote space to store programs per disk J2K Disk or Amdek 2495 Co Co Receivables Keep trock of oll those accounts with Current lisl of accounts stotement printing lost acliviry date ond Current month s transoctions debits amp credits Disk storage of dota 32K Disk 529 95 Stars Of America Education should be fun this program is just that This tutorial uses 25 cf the superstors of Amercan history from George Washington te Ronald Reagan The Civil war A challenging two person game Questions cover Carpet Boggers to the Battle of Vicksburg Pointsare assigned according to the difficulty of the question scores are displayed throughout the game Both Only Tape 19 95 Disk 24 95 History From 1607 To 1976 On two 16K non extended tapes For 1 4 people Informative amp fun way to learn important dates in world history Written for students by ateacher Tope 1995 Disk or Amdek 52495 TREASURE HUNT A graphics text adventure You walk with
92. 5 day money back guarantee Works with all color computers including Original F version CoCo 2 TDP 100 and Dragon Some CoCo 2 computers purchased after November 1984 will require a special adapter 3 00 just let us know the model number and we will add it to your order If required Order yours today Just 89 95 Cut the tedium out of numeric data work The NumberJack gives your CoCo the input capability of machines that cost hundreds of dollars more Call Toll Free 1 800 828 6968 In New York 1 800 462 4891 PRODUCTS Div of Technology Inc 955 Buffalo Road P O Box 24954 Rochester New York 14624 Telephone 716 235 8358 wMindbusters by Richard Ramella The Fifteen Puzzle he sliding tile puzzle is a wondrous lit tle gadget whose prime purpose it seems is to keep children occupied on long car trips It consists of a tray of interlocked tiles with one open square The object is to reorder the tiles based on one of several themes Some versions require that you or der numbers others have you arrange part of the alphabet and still others ask you to correctly spell words or put the elements of a picture in order Another from Sam Loyd Sliding tile puzzles derive from the Fifteen Puzzle an invention of master puzzle maker Sam Loyd The Fifteen Puzzle is a four by four box containing 15 numbered tiles num bered one to 15 and an empty space In the 19th century Loyd offere
93. 52 96 49 141 255 19 1738 DATA 51 132 79 23 65 23 254 193 111 74 174 DATA 53 224 999 Pie in the Sky 1g cc g 28 65495 0 69 CLEAR6 65 FORX 1TO15 BSS BS CHR 8 NE XTX 78 PMODE4 1 8 DIMD 23 AS 18 S 23 8 23 P 23 L 64 GOSUB1 999 9g GOTO789 198 CLS 200 PRINT NUMBER OF SECTORS 1 2 2 INPUT S IF 5222 THEN 200 201 SS B SEC SUBJECTI i 4 AMOU NT 202 55 0 218 FORX 1TOS 220 PRINT CHR X 64 LI NE INPUT SS X 23 PRINTBSS INPUTS X 248 NEXTX 271 PRINT input SUBJECT FOR THE GRAPH LINEINPUTSBS 272 IFS lt 21THENPRINT INPUT A NOTE OR PRESS ENTER LINEINPUTNTS 288 IF 5 THEN RUN ELSE PCLS1 CREEN1 SC GP 1 COLOR2 1 281 IF 5 gt 2 THEN NTS 299 CIRCLE 288 79 49 CIRCLE 236 128 14 295 c g 39g FORX 1TOS C C S X 310 FORX 1TOS 320 P X S X 199 C D X P X 33 NEXTX C f 331 FORX 1TOS A 19 LEN SS X IF ACQTHENSS X LEFTS SS X 18 332 SS X SS X STRINGS A 32 XTX 34 FORX 1TOS 35g 36 P X C NEXTX 37 PI ATN 1 4 388 FORX 1TOS 390 T P X 59 400 A 2 PI T 199 418 LINE 289 790 49 SIN A 4298 49 COS A 79 PSET LINE 236 128 12 SIN A 236 12 COS A 128 P SET 411 T P X D X 2 5g 412 IFD X gt 8THENK 28ELSEK 46 413 A 2 PI T 199 414 DRAW BM STRS INT K SIN A 1 99 STRS INT K COS A 68 C STRS F LS X 64 32 428 NEXTX 421 X LEN SB 8 X 2255 X 42
94. 59 00 Okidata Printer 122 12285105 KC Bus Card 137 95 8 1025 189 00 123 75 85 S SO 1 98 Bi 80 Board 137 95 coe ud Tener 239 00 NEC S DD Tao Broder bund ommodore 1201 139 95 S DD Atari 1526 259 00 1205 Amber 139 95 Print Snop 31 95 Juki secuit 1260 Green 97 00 axell Bank Street Writer 3995 16100 _ 379 00 Image Writer pi 1895 2195 Blue Chip Okimate 10 300 Green 135 00 2 2395 Steaitn 2195 M12010C 64 259 00 300 Amber 145 00 lephant Loderunner 295 Epson Printer Spirit 80 Color 300 250 00 S SD 1495 cea RX80 55 ea 219 00 Teknika S DD 16 95 Print Shop 3195 RXSOFT 259 00 0 Composit amp 5 00 21 95 Bank Street Writer 37 95 W Rx 100 369 00 Panasonic Separate Video 235 00 nnovative Spelunker 2125 M FX BO eese 385 00 22 RGG Composite 8 i Concepts Stealth 2175 B FX 300 no 585 08 f gi T Separate Video 288 00 Flip N File 10 395 2295 529 00 A rer ip N File 5895 TERFACES LO 1500 P ree ET Dealers Inquiries Ip N File 25 1895 MPP1150 64 95 LQ 1 E i w iock Uprint N Port 59 00 Cardco Printer Invited ip N File 50 17 95 ene Dumping GX 65 00 ie wate POLICY No deposit on COD orders FREE freight on a
95. 6K replace the RAMs with 4164s and set all four jumpers to the 32K position One jumper is to the right of U10 the SAM chip and the other three are just above the keyboard connec tor Remove capacitors C48 C70 C45 C67 C35 C64 C61 and C31 If it is not already installed add a jumper connecting the LOW and the unmarked center pin to the left of U8 a PIA The other pin marked HIGH is not used Locate the two pins without anything connecting them labeled R83 to the right of U10 Solder in place a 33 ohm 4 watt 10 percent resistor connecting the two pins You now have what Radio Shack calls a 32K machine Proceed to the ROM Write Disabling section below ROM Write Disabling This procedure applies to E or modified D boards only You must disable the ROMs during a write cycle RAM will occupy the entire address space from C000 to FDFF The interrupt vectors will not be affected since they reside in the protected area from FF00 to FFFF Follow these steps On the component side of the board locate and remove the two ICs integrated circuits labeled U11 and U29 They should be a 74LS138 and 741 502 Prepare the chips as follows Carefully bend pins 4 5 and 6 of the 741 502 straight up Fig 2 s cd ully bend pin 5 of the 74LS138 straight up Solder a short piece of wire to pin 8 on the 74LS02 at the point where the pin enters the chip as you must plug this pin back into the socket Solder the o
96. 9 GOTO 2999 1828 DEFENSE VERSION 2 9 1930 D M D SOFTWARE ASSOCIATES 1978 IF 68 THENCLEA 1924 amp H7CFE AD amp H7Dff LOADM BDEFENSE BIN amp H4999 ELSECLEARL 924 5 AD amp H3Dffgf CLOADM BD EFENSE 1875 DEFUSR AD CS USRf f 109 SLS ggggg ggggg ggggg ggggg ggggg pgggg ggggg ggggg ggggg g ggg g 118g Q VARPTR SLS Q PEEK Q 2 2 56 3 111g DIM P 2 C 1 5 5 2 5 9 CS 2 AS 1 1 S 4 1120 DRAW 5 FOR CITYS amp DGTS 113 CS g 2 U4R2U4R2U14R6D4R2D12 R4D6L16 114 CS 1 2 U6R2U12R4D2R4U6R2D12 R2D4R2D6L16 1158 CS 2 U8R2U4R2U8R2D4R4U6R4 D16R2D6L16 1168 N 9 BU2U6E2R4F2D6G2L4BR1 4 1178 NS 1 BR2R4L2NU1gBR1g 1188 NS 2 BU8E2R4F2G2L2G4D2R8B R6 1198 NS 3 BU8E2R4F2G2NL2F2D2G2 L4NH2BR14 120 NS 4 BU4NR8E6D19BR19 121 N 5 2 BUIgNR8D4R6F2D2G2L4N H2BR14 1228 N 6 BUIgBRANRAGAND4R6F2D 2G2L4BR14 1238 NS 7 BUL R8G6D4BR1 4 1248 NS 8 BU2U2BU4E2R4F2G2NL4F 2D2G2L4BR16 1258 NS 9 BU8E2R4F2D2NL6D4G2L4 NH2BR14 1268 CITY LASER ORIGNS MISSLE Y POS BONUS SIZE HI SLO POKES 1270 0 1 C B 1 46 0 2 82 3 154 4 19 g 5 226 1289 P 0 1g 1 5 P 2 2 265494 1 138g PLAY 5 131 P S V31L19904CDEDEFEFGFGAG 1328 P1lS V31L6901CHCCACCACCHCCH P2S V3 1L1ggO4A 3 291 25801 4 5
97. 9 REGISTER TO 7EBD B7 FFCA 00500 STA SFFCA BIT PATTERN 7E90 B7 FFCC 00510 STA SFFCC 0000010 7 93 B7 FFCE 00520 STA SFFCE 7E96 B7 FFD0 00530 STA SFFDO 7E99 B7 FFD2 00540 STA SFFD2 7E9C 39 00550 RTS 00560 MACHINE LANGUAGE SUBROUTINE 5 7E9D 1 50 00570 ORCC 550 7E9F 8E 0000 00580 LDX 50 7EA2 108 0000 00590 LDY 50 7EA6 A6 80 00600 LOOP3 LDA X 7EA8 B7 FFD5 00610 STA SFFD5 7EAB A7 0 00620 5 TEAD B7 FFD4 00630 STA SFFD4 7 0 108C OSFF 00640 CMPY S5FF 7EB4 25 F 00650 BLO LOOP3 7EB6 1C AF 00660 ANDCC AP 7EB8 7E 7E61 00670 JMP 7 61 00680 MACHINE LANGUAGE SUBROUTINE 6 1A 50 00690 ORCC 550 TEBD 8E 0000 00700 LDX 50 7 108E 0000 00710 LDY 50 7 4 6 80 00720 LOOP4 LDA X 7EC6 B7 FFD4 00730 STA SFFD4 7 9 7 0 00740 5 Y 7 7 5 00750 STA SFFD5 108C OSFF 00760 CMPY 55 7ED2 25 F 00770 BLO LOOP4 7ED4 1 AF 00780 ANDCC SAP 7ED6 7E 7E7F 00790 JMP S7E7F 0000 00800 END 00000 TOTAL ERRORS LOOPl TEJI LOOP2 7E4F LOOP3 7EA6 LOOP4 7 4 46 HOT June 1985 Program Listing 3 Basic Transfer Demonstration 1gg CLS PRINT THIS SECTION OF TH E PROGRAM IS EXECUTED IN THE FIR ST RAM BANK 11 INPUT lt ENTER gt GO TO THE S ECOND RAM 5 128 EXEC 32413 130 CLS PRINT THIS SECTION IS EX ECUTED IN THE SECOND BANK 135 INPUT lt ENTER gt TO RETURN TO NK 5 140 EXEC 32443 150 CLS PRINT NOW YOU ARE BACK W HERE YOU
98. 95 26 3030 05 9 64k 64 95 disk Memory Test Program Listing 1 tells you if you did the upgrade RS D C Modem IB 89 95 Basic 09 req 0S 9 87 95 disk correctly and it will work with any Color Computer The E Board test pea i e Wd 3 gue pes checks to see if your RAMsare active it writes to the area of RAM that asswori HL O Pak 05 1 i i Hayes SM 300 Modem 239 95 p Word 5995 dbc is not in the same address range as your ROMs If you have a 32K USR Password 1200 399 95 Elite Calc 59 95 d amp c machine and this test checks out you really have 64K RAMs The USR Password 2400 599 95 Color Term Plus 29 95 cass Write to ROM Area test is for those with D or E boards If it fails CoCo Switcher 39 95 Deft Pascal 7995 recheck the ROM Write Disabling section Elephant Disks ssdd 18 95 26 3012 Deluxe Joystick 34 95 Mach gt 199 95 Extended Basic Installation NEW Duai Doubla Sides Drives Including NEW 26 3128 64K This procedure is the same for all CoCos Order the Extended Basic Fase pawar suppiy tate som Droct vidon Cote 5217915 kit Radio Shack catalog no AXX7072 Open your CoCo or CoCo 2 Install the new ROM in the empty socket that is provided aligning the MSI SOFTWARE notches MSI DISKUTIL NEW 19 95 MSI CALENDAR NEW 1995 Reassemble your CoCo and type PRINT MEM You will have 6 144 COLORFINANCE NEW 69 95 MSICOLORPAYROLL NEW 99 95 fewer bytes because Extended Bas
99. 984 Basic 09 review database man ager program graphics tutorials hurricane tracker September 1984 Educational software buyer s guide typing teacher program the CoCo as a mar keting aid October 1984 A collection of sounds for your CoCo how to make programs auto execute printer spooler November 1984 Personal money manager pro gram disk file protection utility December 1984 Disk drive timer disk drive maintenance tips full featured text editing pro ram January 1985 Spreadsheet program stock charting program make fancy graphics with your printer February 1985 Drawing program user s group list Space Hawks game March 1986 Universal screen dump program POKE list utilities April 1985 Telewriter 64 mods modem com parison satellite tracking program You ll also find in each issue our regular fea tures reviews of popular software and hardware and dozens of useful programs that are yours for the typing in Each back issue costs 3 50 plus 1 shipping and handling On orders of 10 or more back issues there is a flat 10 shipping fee Send your orders to HOT CoCo Attn Back Issue Orders 80 Pine St Peterborough NH 03458 HOT CoCo and You Those with the latest and most thorough in formation run their computers with confidence Those without it are run ragged with frustra tion Color Computerists who ve gained the upper hand read HOT CoCo the monthly magazine t
100. AINBOW 11 84 PXE Computing 11 Vicksburg Lane Richardson Texas 75080 214 699 7273 Circle Reader Service card 451 Please hire the mentally retarded They are sincere hard working and appreciative Thanks Phyllis Instant CoCo Directory Instant CoCo is acassette tape containing the major programs from this issue of HOT CoCo Its purpose is to save you the time and effort of typing long program listings into your Color Computer You simply load the programs from the Instant CoCo tape using your cassette recorder The instructions for operating each program are found in the corresponding HOT CoCo article Both Basic and Assembly language programs are included on the tape The Instant CoCo symbol appears in HOT CoCo s table of contents and on the pro gram listing for each article with a listing used on the Instant CoCo tape As an added extra each tape also contains a never before published Bonus Program complete with instructions The directory below lists all programs included on this month s Instant CoCo cas sette Shown first are the name of the article with a descriptive blurb and its author followed by the page number in this issue where the article appears Next comes the file name of the program on cassette Finally there is a brief description of the Color Computer system needed to run the program This month s Instant CoCo cassette is available for just 11 47 including postage and handling from Instant CoCo 80 Pine
101. Basic misinterprets them If for example you enter the back ar row as a character Basic treats it as a back space System Requirements 16K RAM Extended Color Basic Gemini 10X Printer June 1985 HOT CoCo 67 After the program accepts the character thescreen clears and you can define another character Once you have entered the last character it is wise to save the set using the write option If the file already has a name it willappear on the screen and pressing enter saves the set under the original file name With a disk the string need not include an extension since the data is saved in binary and the DOS appends BIN by default The direct entry feature lets you bypass the set option Instead you enter the nine column sums from the keyboard When prompted respond with a decimal or hex value preceding all hex values with amp H The program displays the character when the last column sum is entered and then prompts you for descenders and character entry Getting Started Now that you ve keyed in the program and understand how it works you re ready for the hard part designing a character set To get you off to a good start I ve prepared Table Drive 1 1 39 901 761 4565 5512 Poplar Memphis TN 38119 2 which shows the hex column numbers for 26 uppercase futuristic characters used the program to design these characters and then recorded them using a SAVEM com mand Use the direct entry option to enter
102. CHECK MONEY ORDER 2 00 SHIPPING N Y RES ADD SALES TAX M eI SOFTWARE 0 BOX 326 CAMBRIA 11411 Circle Reader Service card 430 92 HOT CoCo June 1985 Circle Reader Service card 4131 m m m m m m ONVERT YOUR ANALOG WORLD TO DIGITAL m AVALOG TO DIGITAL CONVERTERS FOR COLOR ES 1 OR 2 COMPUTERS CCAD B B Features MENU DRIVEN SOFTWARE f 12 BIT RESOLUTION 16 INPUT CHANNELS ON BOARD USER AMPLIFIERS 3 TTL ALARM LINES DISK OR TAPE SOFTWARE INCLUDED ORDER CCAD B DISKETTE CCAD B amp TAPE AD 8 B FEATURES m 5 BIT RESOLUTION im 818 8 8 8 8 199 00 190 00 e 8INPUT CHANNELS e OPTIONAL MENU DRIVEN D SOFTWARE ORDER AD 8 HARDWARE 69 95 AD 8 TAPE 7 95 AD 8 DISKETTE 995 THINC w e TECHNICAL HARDWARE INC P O BOX 3609 FULLERTON CA 92634 Ce CE 8 im ss im im im m m m im BE mj m m 87 g 09 87 10 mim m 8 m ATTENTION Foreign Computer Stores Magazine Dealers You have a large technical au dience that speaks English and is in need of the kind of micro computer information that CW Peterborough provides Provide your audience with the magazine they need and make money at the same time For de tails on selling 80 MICRO inCider HOT CoCo and RUN contact SANDRA JOSEPH WORLD WIDE MEDIA 386 PARK AVE SOUTH NEW YORK NY 10016 PHONE 21
103. CHR LEFTS MID RIGHT LEN INSTR LSET RSET TRM STR STRINGS INKEY MKN ABS POS TIMER RND ASC TAB CAL JOYSTK PEEK POKE LOC LOF EOF FREE ERR VARPTR SWAP CLOSE INPUT LINEINPUT PRINT WRITE PRINT PUT KILL CHAINM FIELD DATA READ RESTORE Graphics Commands Sound Commands String Functions Directives Numeric Functions Editor Commands Commands FOR NEXT STEP GOTO GOSUB IF THEN ELSE RETURN STOP RETI ON n GOTO GOSUB ON ERROR ON RESET ON IRQ FIRQ NMI ON OVR NOVR EXEC LET ORG REM OR END DIM END BASE RAM ON OFF RAM64K HIRES GENERATE DPSET STACK LINE EDIT AUTO EDIT COPY MOVE RENUM BER AUTO LINE PRINTER LIST DELETE SEARCH REPLACE BAUD RATE PRINTER CBASIC TAPPEND SKIP SIZE LOAD SAVE APPEND KILL DIR and much much more REQUIRES 32K and Disk 64K recommended Introductorv Price 119 00 Regularly 149 00 il ike LL SELLER LLL UP TO 85 CHARACTERS PER LINE READABILITY ADJUSTABLE AUTOMATIC KEY REPEAT 2 PROPTECT 1 23 SCREEN LINES INQUIS AER CONTROL CODE KEYBOARD Masters pe tine sracters rer tine 44 Characters line Our acer ror FULLY BASIC COMPATIBLE DISPLAY FORMATS OF 28 to 255 CHARACTERS PER LINE FULL 96 UPPER LOWER CASE CHARACTERS they BASIE MIXED GRAPHICS amp TEXT OR SEPARATE a GRAPHIC amp TEXT 5 5 52495 2955 IN
104. Column 36 CPS gessi 895 00 as with Power Suppl 166 95 Olympia 132 Column 14 CPS with Form and Tractor 399 95 m E wi E Apple Franklin Printer Interface w Graphics and Cable 84 95 Dual Drives in One Cabinet 316 95 Printer Cables starting at 19 95 258 gt Qual Sided 40 1k Bare 15200 Printer Paper Microperf Edge 1000 Sheets 16 95 In Case with Power Supply Dual Drives in One Cabinet Dual Sided 80 tk Bare In Case with Power Supply Dual Drives in One Cabinet Apple Frenklin Disk Drives 35 40 Itack in Case with Cable and Software Controller Card for Iwo Disk Drives Combination Price for Disk Drive and Controll Commodore Disk Drives PEAT Power Supplies and Cabinets 5 and Hard Drive Systems 196 95 356 95 177 00 216 95 386 95 55F ELECTRICAL Surge Protectors Line Filters SL Waber 6 Outlets with Switch Uninterruptable Power Supplies 171 95 4695 196 95 TODA 236 95 starting 42 00 MODEMS Volksmodem 300 Baud Signalman Mark X Autodial Mark XII 1200 300 Baud Autodial COL8R COMPUTER DISK DRIVE SYSTEMS AND ADD IN PRODUCTS ADD IN BOARDS FOR THE IBM Multi Function Board Clock 256K Paralle Port Serial Port 35 Track Single Head Drive with Case Power Supply Cable Special Software 5399 95 Controller Instruction Booklet Diskettes 244 95 Floppy Disk Controller 145 00 Above with Dual Drives in One Cabinet STB Rio Plus
105. Corporation Volume Price Breakthrough New DEFT Extra the perfect addition to your DEFT Pascal or DEFT Pascal Workbench DEFT Extra is a library of gaming and direct file I O routines as well as graphics routines that provide Extended Basic s graphics capabilities in all 8 graphics modes Full DEFT quality documentation and sample Paint program included Only 39 95 requires 64K 39 95 59 95 DEFT Bench 4995 P DEFT Pascal 32995 DEFT Edit DEFT Debugger DEFT Pascal Compiler DEFT Linker Full screen editor debug Pascal machine complete Pascal language combines multiple program i programs symbolically generates machine objects into one binary had a DEFT Macro 6809 language object program see DEFT Pascal supports entire 6809 R B Car 89 95 DEFT Li instruction set z create and maintain lets you define your own DEFT Pascal Workbench 149 93 program object libraries instructions DEFT Pascal And DEFT Bench Together R S Cat 490 5001 R S Cat 490 5002 All DEFT software and programs developed with DEFT software are BASIC g ROM independent and use all of the memory in your Color Computer without OS 9 All you need is DEFT software and a Tandy Color Computer with LI alle Extended Disk BASIC at least 32K of RAM and One Disk Drive With DEFT Pascal 59 95 you will also need a text editor to write your programs PBJ WORD PAK compatible upgrades and Educational discounts available Dealer
106. DIVIDUAL CHARACTER HIGHLIGHTING REVERSE CHARACTER HIGHLIGHT MODE ALL ORDERS SHIPPED FROM STOCK ADD 2 50 POSTAGE gt WRITTEN IN FAST MACHINE LANGUAGE AUTOMATIC RELOCATES TO TOP OF 16 32K AUTOMATICALLY SUPPORTS64K of RAMWITHRESETCONTROL 5566RicochetAvenue LasVegas Nevada89110 702 152 0632 SCREEN lt outle Worah Uu har Full Control Code Kerboar d 8 Avtomatic Key Reseat hixed lent and Grarhics in PRODE 4 and Mun ON SCREEN UNDERLINE BOUBLE SIZE CHARACTERS ERASE TO END OF LINE ERASE TO END OF SCREEN HOME CURSOR BELL TONE CHARACTER HOME CURSOR amp CLEAR SCREEN REQUIRES ONLY 2K OF RAM COMPATIBLE WITH ALL TAPE amp DISK SYSTEMS Circle Reader Service card 4335 Tell them 1 saw it in HOT CoCo Screen Enhancement Program Comparison Chart PROGRAM FEATURES HI RES HI RES I BRAND X NEW OLD Upper Lower case characters Yes Yes Yes Mixed Text and Graphics Yes Yes Yes Separate Text amp Graphics Yes Yes No Print fully implemented Yes Yes Yes Print on all line lengths Yes Yes 51 only Different line lengths 28 10255 9 28 255 9 51 only 1 Automatic Kev Repeat Yes Yes Yes Adjustable Key Repeat Yes No Auto Repeat Misable Yes No Erase to end of line screen Yes Yes Home Cursor Yes Yes Solid or Blinking Cursor Yes No CLS command supported Buff Biack Buff Black XY Coordinate Cursor Posinoning Yes Yes
107. Double Size Characters Yes Yes Individual Continuous Highlighting Yes Yes On Seen Underlining Yes Yes Clear Key functional Clear L keysClear key 16 32 amp 64K Supponed Yes Yes Green or Black Background Color Yes No Dual Character sets for Enhanced 64 and 85 Characters per line display Yes No Protected Screen Lines programmable 11023 No Full ControtCode Kevboard for Screen control directly from the keyboard Yes No Programmable Tab Character Spacing Yes No Full Screen Reverse Function Yes Yes Switchto amp from the Siandard 16 by 32 Screen for full compatability Yes No On Error Goto Function No No Extended Basic Required No Yes All Machine Language ProgramYes Yes RAM Required in addition to Screen RAM 2K 2K Program Price Tape 24 95 1995 VISA MASTERCARD AND C O D ACCEPTED June 1985 HOT CoCo 27 NEW New Low Price x dini o i 3 40Tkc 6 d J Double Sided ai i Oouble Density STARTING AT 40 or 80 Tracks 1 2 Hght Teoc Ponosonic 129 00 m WITH CASE amp Speed 6 ms tk to tk and up Capacity 250k unformatted POWER SUPPLY Tracks 40 16995 Worronty now 1 YEAR We carry only the finest quality disk drives seconds no surplus U ALL DRIVES FULLY TESTED amp WARRANTEED Complete Disk Drive with Power Supply amp Case 169 95 Two Drives in Dual Case amp Power Supply 279 95 Tracks 40 only 1 2ht double sided double density Dis
108. Edit to a T by Jeffrey S Parker ease of use documentation performance error hondling i OVERALL RATING 3 25 Application Software Full form It could however be useful for some applications such as brief program instruc tions and menu selections Although the Sound Speech Cartridge has some advan tages itis also expensive You might wantto investigate and compare other synthesizer products for the CoCo before making a pur chasing decision often have you wished you could write a simple text file without getting dizzy from the checkerboards How many times have you sat in front of your CoCo wishing it had an easy to live with editor Are you an OS 9 user who still can t believe the system doesn t include lowercase char acters Are you using a macro text editor that is not providing what you need TIS Edit might be for you This is one of the most sophisticated disk based utilities to come along since OS 9 s introduction T S The Sound Speech Cartridge is manufac tured by Tandy Corp Catalog No 26 3144 1400 One Tandy Center Fort Worth TX 76102 It requires 16K and runs with cas sette or disk It sells for 99 95 Edit is atext screen editor that edits program lines as well as text files It incorporates 10 choices for screen display size and four choices for screen display colors The pro gram comes fully equipped with a lowercase letter display with true descenders and file merging capabil
109. Esposito and Raymond Rowe HOT CoCo July 1983 p 44 You cannot POKE new instructions into the Basic area of an unmodified CoCo like mine You are concerned with memory lo cations from 000 to FEFF 000 to FEFF in Disk Basic You can POKE these addresses to gain almost 16K almost 8K with Disk Basic of extra RAM for machine language programs One of the tricks to initializing RAM bank 2 for Basic lies with the second machine language subroutine address 32326 in List System Requirements 64 or 32K RAM Extended Color Basic Editor Assembler optional June 1985 HOT CoCo 57 Photo by Edward Judice ing 1 The trick is in its placement in memory the machine code is stored in duplicate in both RAM banks Keep in mind that al though RAM bank 2 is now serving as the upper 32K it will soon be returned to an equal status with RAM bank 1 The code is stored in identical address locations in each RAM bank when you think of each bank as consisting of addresses 0 32767 This program sequentially duplicates every byte of information from the first RAM bank into the second RAM bank It works be cause of the duplicate machine code When the code selects the second RAM bank it finds the duplicate right where it should be to keep the CPU working on the task When the code jumps back to the first RAM bank it again finds the code right where it needs to be Getting Video When you run Listing 1 you will not notice any change The vid
110. HEN VA VA 2 157 GOTO151g 1588 T SS AND 3 1 GOSUB 183 1 55 THEN SC P T PLAY P T 159g GOTO 196g 168g MSL HIT CTY GND OR UNDR 1618 FOR T 2 TO STEP 1 IF M S AND 1 THEN GOSUB 183g 1628 MS MS 5 NEXT T FOR T g T 05 1630 IF 1 5 THEN 1 698 ELSE ON C 1 T GOTO 2449 167 g 1648 PLAY Vl FOR U f TO 16 ST EP 2 CIRCLE 8 182 0 4 2 5 PLAY V V V P4S NEXT U 1659 FOR U 16 TO STEP 2 CIRC LE C 9 T 8 182 U 1 2 5 9 PL AY V V V P4S NEXT U 1668 LINE 8 160 24 182 PRESET BF 1 2 1 GOTO 1639 167 PLAY V31 FOR U TO 16 S 2 CIRCLE 8 187 0 4 s 1688 PLAY P4 V V V CIRCLE 8 187 0 1 5 NEXT C 1 1 GOTO 1639 1699 NEXT T GOTO 2949 1799 SUBROUTINES 1888 CLEAR STREAMER 181 A USR5 T 1828 GET NEW MISSL X POS ANGL 1838 A RND 7 1 B RND 7 1 IF B 3 OR ABS A B gt 2 THEN 1839 184 A USR B A 2 256 A 4 T RETURN 1859 DRAW GRND amp RANDOM CITY 186 C 1 T 23 POKE CS T 3 COLO 2 1 LINE C B T 12 184 C 9 T 24 198 PSET BF 187g DRAW CABM STRS C B T 182 CS RND 3 1 PAINT 0 6 18 4 1 RETURN 188 DRAW FORTRESS amp GROUND 1890 DRAW C3BM124 156R2D26NL6NR 8R2U26R2C2 LINE 172 184 152 198 5 COLOR 4 1 RETURN 195g SCORE ROUTINE 1968 A VA SC L 1 SC 1 T 9 197g S T S T A IF S
111. IF SL g THEN 89g 88 L LEN AAS AAS LEFTS AAS SL l STRINGS 9 SL RIGHTS AAS L SL 890 FOR I 3 TO ll 998 DSKIS DR 17 1 21 22 91 21 21 128 22 4127 920 IF 5 1 715 5 lt gt THEN 1 60 095 938 NEXT I 949 FE FILE DOESN T EXIST 958 RETURN 968 CLS g PRINT FILE 5 NOT O N DISK 979 PRINT PRESS A KEY 98g IF 5 980 990 RETURN 1999 DATA 99 99 16 99 159 1819 DATA 15 112 15 113 18 1928 DATA 32 82 173 174 127 103 DATA 255 64 118 159 99 157 104 DATA 255 00 00 00 159 1858 END PUTLDR BAS Mindbusters Program Listing 1 Fifteen Puzzle 100 REM ORIGINAL FIFTEEN PUZZL E 11g REM TRS 88 EXTENDED COLOR BASIC 16K RAMELLA 128 CLS CLEAR 500 DIM AS 4 139 AS 1 5 1 2 3 4 14 5 2 5 6 7 8 150 5 3 9 18 11 12 16 4 13 14 15 178 FS AS 1 AS 2 AS 3 AS 4 1 SS STRING 32 32 18g 1 Y 4 5 1 2 32 DS AZ 19g GOSUB 338 PRINT INPUT HOW MANY DISPLACEMENTS Q PRINT 160 55 289g FOR R 1 TO Q 219 BS MID DS RND 4 1 220 IF B A AND E Z OR B Z AND 5 OR B z AND OR B z AND ES THEN21f 239 PRINT 8 196 DISPLACE N 248 GOSUB 299 IF J THEN 219 E LSE Js N N 1 5 5 GOSUB 330 NEXT R PRINT 196 55 258 BS INKEYS IF INSTR DS B gt 9 THEN GOSUB 299 ELSE 259 268 GOSUB 339 278 IF 1 2 3 4 THEN PRINT 235 YOU
112. ILE IS DETERMINEDBY THREE FACT ORS 2818 GOSUB 2889 PRINT FIRST T HE BASE VALUE OF THE SHOT IS SET AT 1 EVERY SHOT MISSED D ECREASES THIS VALUE BY 2 TO A M INIMUM OF WHEN A SHOT SCO RES THE BASE VALUE IS MULTIPLI ED BY THE SKILL LEVEL A DEAD CENTER HIT WILL 28298 PRINT AWARD ABONUS MULTIP LIER OF 2 5 OR 18 DEPENDING ON COLOR THE BASE VALUE IS RES TO 10 EACH TIME ASHOT SCORES 283 PRINT PRINT A BONUS CITY IS ASSIGNED EVERY 3999 POINTS SKILL LEVEL INCREASES EAC H 5999 POINTS 284 GOSUB 2889 PRINT A SUCCES SFUL ATTACK BY AN ALIEN WILL COS T 1 5 BONUS CITIES DEPENDIN G ON YOUR LEVEL 285 PRINT PRINT YOU LOSE WHEN ALL OF YOUR CITIESARE GONE WHE N AN ALIFN ATTACKS YOUR FORTRESS AND YOU HAVE TOO FEW BONUS CIT IES OR WHEN A MISSILE PENET RATES THE UNDERGROUND 2869 GOSUB 2889 PRINT THE TOP OF THE SCREEN DISPLAYS FROM LEF T TO RIGHT LEVEL SCORE A ND BONUS CITIES AT THE E ND OF THE GAME A TOP TEN ROU TINE WILL ALLOW FOR SAVING T HE TOP TEN SCORES ON DISK 2879 GOSUB 2889 GOTO 149g 288 PRINT 481 gt gt TYPE ANY KEY TO CONTINUE lt lt 2899 IF INKEYS THEN 289 ELSE CLS RETURN 2999 PCLEAR 2 GOTO 1929 Program Listing 2 Basic Loader 1g BDEFENSE MACHINE CODE 2g LOADER 30 C 1984 BY D M D 4g SOFTWARE ASSOCIATES 5g PER eee eee ee e e d d e d A 9 9 9 55 CLS PRINT MACHINE CODE LOADI 69 STARTADDRESS amp H3D99 78 AD ST 8g READ CODE
113. IN 2 PARTS 0604 00 00 ADDR 0400 0605 SWI 3RD INSTRUCTION This short example all in hex loads accu mulator A with the ASCII data for a blank andstoresthe contents of A at address 0400 the top of the screen and ends The exam ple is a listing of a program that is already compiled The assembler has assigned ad dresses for each byte of code it has converted the text e g LDA 60 into binary numeric representations readable by the CPU As semblers that storeprogramson tapeusually locate the binary code at 600 this program is located at 600 to 605 When the pro grams are stored on disk the code usually begins at E00 The second column above shows the re sults of converting the text into binary code do not be confused by the fact that the binary has been translated into hexadecimal Everything in the computer is really binary ones and zeros the hex is only a way to help us poor humans better read the contents of memory It is much easier for us to process hex 86 than binary 10000110 which is 134 in decimal I looked it all up When the 6809 processes 100001 10 at memory location 600 it understands that it is supposed to load accumulator A LDA and move to the next byte in memory 601 to find the data to be loaded Similarly in 602 the CPU finds and processes a second instruction store accumulator A STA 603 and 604 contain the address at which the contents of A are to be stored The 6809 takes
114. It is also possible to arrange for the loan of a computer while yours is in the shop for this modification The Dynamic ME 128 64 When you have concluded the installation how do you use your 128K CoCo The toggle switch provides one method for skipping between programs in the two memory banks The Dynamic Elec tronics documentation also includes two POKEs that you can in sert in Basic programs to perform the same function The switch has a middle position that you use when you are running under program control Whenever you change banks the program that was running is suspended the values of all variables and pointers are saved and the original RAM is placed in a reduced power mode drawing only about 10 percent of the power it normally uses My E board CoCo tends to run warm because of its many modifications but I don t think the addition of the ME 128 64 has added any noticeable heat load The toggle switch is less reliable than POKE statements for transferring control at least on my CoCo The toggle works suc cessfully several times in a row and then hangs up on the next attempt for no apparent reason Bill Chapple from Dynamic Elec tronics acknowledges that the switch is probably susceptible to contact bounce microscopic oscillations that can occur whenever a mechanical contact opens or closes Contact bounce is often interpreted by high speed digital elec tronics as many closely spaced operations of the switch and it is poss
115. KIT 39 95 Features Gotd Plated Edge Cards Dual Selectable ROM Sockets No POTS to adjust Compatible with COCO I amp II 120 Day Warranty Double and Single Density So whals so new in our second generation We had a lot of requests for need 10 use the lessor expensive 28 pin Eproms Our 2nd generation controller aliows the useage e ther two 24 ROMS 2apin ROM and one 2891 ROM The second feature we added was a technical one and not apparent to tne average user Western Oigilal was good enough to manulacture lor us a lar advanced dr ve controller chip caled the WD1773FDC Thischip integrates the gata separa tion method wiltun itself allowing the cleanest data transfer to date Reduce your O errors with the Hard Drive Specialist Floppy Drive Controller tor Ihe Cotor Compute Gotd Edge Card Connectors Advanced Design and Ihe absence of potentiometers make this the best board available to date Completed and Tested Board with Radio Shack ROM 139 Includes Case and DOS Instructions Completed and Tested Board without ROM 5119 Includes Case Bare Board with instruction manual 40 Parts Kit For Bare Board without ROM S 40 Radio 5 20 NEw ROM HOS has licensed the ROM from RadioShack tobe able to offer alternative Operating systems pre blown ready for instaliation The firs of what we hope to be a wide range of options is ADOS ADOS s
116. L GOSUB 1999 SvS SV CHRS P NEXT L 738 1 5 5 5 Y lt ME THEN 719 ELSE 749 748 CLOSE 1 759 coTO3f 19gg IF P gt 95 THEN P P 64 ELSE IF P lt 31 THEN P 32 1919 RETURN Program Listing 1 Bufftext RAM still contains most of your buffer Make sure a tape is loaded and ready to record Save all of RAM by typing CSAVEM name 1536 16383 1536 and pressing enter Change 16383 to 32767 for 32 and 64K ma chines Make several copies and put them aside At this point you have the option of shutting off the power and removing the ROM pack Perform a PCLEARO by typing POKE 25 6 NEW This reserves all avallable RAM for program and buffer use Load the tape you saved after going off line by typing CLOADM name and pressing enter When youaregreeted with Basic s OK prompt load Bufftext and run it You ll see the title on your screen Press any key to continue Bufftext works by PEEKing memory loca tions checking for ASCII code line 1000 and POKEing an ASCII value to the screen The menu at the bottom of the screen lets you continue print CP or save S part of the buffer The C command puts the next text page on the screen You may continue to scroll through memory in this fashion The text page TP value at the bottom indicates the text page you are viewing You may print any text that appears on your screen by selecting P at the prompt Make sure your printer is on or the program will hang up
117. LS INPUT ready printer A B 39g FORI 1TO6 READBAUD I PRINT I gt B B B 2 NEXT INPUT BAUD 1 6 gt 15 BAUD B 4g PRINT 2 CHRS 27 58 INPUT J gt OYSTK OR gt 1 5 255 7 9 64 6 6 6 3ELSELM g 6 GOSUB529 78 LL 32 Y X L SS LL Z PEEK L P RINT LL US POKEL Z IFLM THENX INT JOYSTK g K7 Y INT JOYSTK 1 K6 90 AS INKEYS IFAS THEN7fELSEIF LM 14 5 5 5 100 IFA Z9THENX X X 8 GOTO78 118 gt 7 128 9 lt 6 7 13 94 gt 7 140 19 15 IFAS S THENPOKEL 128 GOSUBJ3 29 GOTO79 168 IFAS R THENPOKEL 119 GOSUB3 28 GOTO79 17g IFAS C THEN6g 188 5 5 199 IFAS L THEN489 299 IFAS W THEN499 21 IFAS V THEN399 229 IFAS T THENPRINT 2 CHR 27 36 CHRS 1 AS FORI 3 2 0128 1 PRINTA 2 A GOTO6f 238 IFAS lt gt P THEN289 248 PRINT 75 PROGRAMMING PRINTE R PRINT 2 CHRS 27 CHRS 42 C HRS L L AS STRINGS 19 32 J VARPTR AS J2 J 2 J3 J 3 POKEJ 19 FORI 32T0128 25g IFPEEK L 255THEN27f 268 X INT L 256 POKEJ2 X POKEJ3 L X 256 PRINT 2 CTS CHRS I AS 278 L L 18 NEXT GOTO6g 52 HOT CoCo June 1985 288 IFAS lt gt U THEN7 298 GOSUB44f FORX 9TO8 L L 1 POK EL V X NEXT 399
118. MAPL 7E36 A7 80 00140 STA STORE INCREMENT X 7E38 B7 FFDE 00150 STA SFFDE MAPO 7E3B 8C 00 00160 CMPX SPFOO ALL ROM COPIED 7E3E 26 FL 00170 BNE LOOPl LOOP IF NO 7E40 7 FFDF 00180 STA SFFDF LEAVE 1 RUNNING 7E43 00190 ANDCC 4 5 ENABLE INTERRUPTS 7 45 39 00200 RTS 00210 MACHINE LANGUAGE SUBROUTINE 2 7E46 1 50 00220 ORCC 550 7548 8E 0000 00230 LDX 50 INITIALIZE REGISTERS 7E4B 108 0000 00240 LDY 50 TO BOTTOM OF RAM 7E4F 80 00250 LOOP2 LDA X GET BYTE INC X 7E51 B7 FEDS 00260 STA SFFD5 SELECT RAM BANK TWO 7E54 A7 0 00270 STA STORE BYTE INC Y 7E56 7 FFD4 00280 STA SFFD4 SELECT RAM BANK 1 7 59 108c 8000 00290 CMPY 8000 7 5 25 FO 00300 BLO LOOP2 TESE lC AF 00310 ANDCC SAF 00320 MACHINE LANGUAGE SUBROUTINE j 7E61 B7 FFD5 00330 STA SFFD5 EXIT IN RAM BANK 2 7E64 86 39 00340 LDA 8539 DISABLE SUBROUTINE WHICH 7E66 B7 0167 00350 STA 167 RESETS VIDRAM TO PAGE2 7E69 B7 FFC6 00360 STA SFFC6 SET VIDRAM REGISTER 7E6C B7 FFC9 00370 STA SFFC9 TO BIT PATTERN 7E6F B7 FFCA 00380 STA SPECA 1000010 7E72 B7 FFCC 00390 STA SFFCC 7 75 B7 FFCE 00400 STA SFFCE 7 78 B7 FFDO 00410 STA SFFDO TE7B B7 FFD3 00420 STA SFFD3 7 7 39 00430 RTS 00440 MACHINE LANGUAGE SUBROUTINE 4 7 7 B7 FFD4 00450 STA SFFD4 SELECT BANK 1 7E82 86 7E 00460 LDA 57 ENABLE ROM SUBROUTINE 7E84 B7 0167 00470 STA 167 TO RESETVIDEO RAM TO PAGE 2 7E87 B7 FFC6 00480 STA SPFC6 SET VIDRAM 7E8A B7 FFC9 00490 STA SFFC
119. OT CoCo can bring out the best in you and your Color Com puter A wealth of knowledge for an entire year for just 24 97 Order your subscription today by filling in the coupon or by calling TOLL FREE 1 800 258 5473 In New Hampshire call 1 924 9471 TRS 80 and MC tO Color Computerware registered trademarks of the Radio Shack Tandy Division of Tandy Corp How to Use HOT CoCo Each month HOT CoCo provides program listings for you to type into your Color Com puter and use If you are new to computing read this page for advice that will help you avoid problems often encountered when en tering programs manually Know the Basics Before you begin you should be familiar with the basic operation of your Color Com puter Read the manual and make sure you understand how to enter a program line save a program to cassette or disk and make cor rections to a program line The Color Com puter manuals are well written and you will enjoy your CoCo much more if you ve read them Check the Requirements The first thing you should do is make sure that the program you want to enter will run on your version of the Color Computer You need to know the memory requirements the type of Basic used Color Micro Color Ex tended Color Disk Extended Color Basic what peripherals might be needed and in some cases whether a particular ROM ver sion is needed See below for an explanation of the different ROMs All this
120. POKE eight colors into a 64 by 192 pixel resolution how to produce precise rounded shapes with short com mands have only one quibble with Color Computer Graphics it was written backwards It should of text making changes wherever needed The CoCo s standard editor limits you to working on a single program line at a time and could require you to specify a line num ber several times if major changes are needed It is no surprise that one of the most popular accessories for programming in Ba sic is an enhanced editor Vidtron s Edittron is one It offers 3K of ma chine language that you can load into any con venient spot usually at the top of whatever RAM you have available and put into action or sideline as you require It might not be the most powerful program editor around but it is simple to learn and it works well The disk version reviewed here contains five copies of Edittron any of which could be copied on an application disk The stock pro gram loads into RAM starting down at ad dress 00 putting it into conflict with start off with Color Basic and move into Extended Color Basic so that it is easy for beginners to follow Instead it begins with memory mapping impor tant theory but not the first concern ofa beginning programmer It moves from there into serigraphic modes some of which the author mentions are there only to amaze He even recommends that readers skip to later chapters if they lose interest
121. PRICES BEST POSSIBLE WARRANTY KNOWLEDGEABLE SALES STAFF TIMELY DELIVERY SHOPPING CONVENIENCE Tell them 1 saw it in HOT CoCo A SPECTACULAR OFFER 259 00 The Smith Corona L 1000 is a simple low cost and reliable text printer backed by the quality workmanship of Smith Corona The L 1000 is compatible with most word proces sors and even if you own a dot matrix printer this is a great opportunity to obtain professional looking results at an affordable price Take advantage of this one time offer from Computer Plus while supplies last com P O Box 1094 480 King Street Littleton MA 01460 US SINCE 1975 IN MASSACHUSETTS CALL 617 486 3193 June 1985 HOT CoCo 43 GAME by Jim McDowell and Shawn Diehl Missile Defense The aliens are back and boy are they mad M issile Defense II picks up the theme of the arcade game Missile Command The object of the game is to defend your six cities from attack by missiles and aliens There are five different skill levels each in creasing in speed and score values The joystick moves a sighting cursor and the joystick button fires your laser To hit a missile place the sighting cursor directly on or below the leading edge of the missile To hitan alien aim the cursor at the off colored pixels on each alien Any missiles that are not hit will continue down the screen until they hit a city or the ground near a city Aliens you do not hit
122. PRINT PRINTSBS 392 PRINT PRINT TO 3939 LINEINPUTSBS 3948 GOTO78f 4000 IF S THEN RUN ELSE IFS 2fg THENPRINT NO ROOM FOR A NOTE FO 1 NEXTT GOTO789 4010 CLS PRINT eeeeceeeeeeeeeeee eeeeeeeeeeeeeee 4929 PRINT CHANGE NOTE FROM 4939 PRINTNTS 404 PRINT TO 4958 LINEINPUTNTS 4969 GOTO789 Investment Analysis 19 DIM A 15 PV 15 CV 15 15 CLS 2g PRINT NET PRESENT VALUE COMP UTATION 25 PRINT BY DEV CHAKRAVARTY 26 PRINT 39 PRINT NET PRESENT VALUE NPV CONCEPT PRINT 31 PRINT WHEREVER PROMPT INDICAT ES PRINT PRESS Y PRESS Y AND THEN PRINT HIT ENTER KEY 32 PRINT INPUT PRESS Y TO C ONTINUE 5 34 IF 5 THEN 40 ELSE GOTO 2 g 40 PRINT 199 AVAILABLE TODAY I S WORTH 43 PRINT MUCH MORE THEN 199 Av AILABLE 46 PRINT AFTER FIVE YEARS BECAU SE OR THE 49 PRINT ERODING VALUE OF MONEY CAUSED 52 PRINT MAINLY BY INFLATION 53 INPUT PRESS Y TO CONTINUE M 5 54 IF 5 55 ELSE GOTO 2 55 CLS PRINT THIS PROGRAM ALLOWS THE DECISION 58 PRINT MAKER TO TAKE THIS INTO ACCOUNT 59 PRINT WHEN MAKING INVESTMENT DECISIONS 69 PRINT WHICH REQUIRE CASH INVE STMENTS 63 PRINT INITIALLY AND PAY BACK SUMS 66 PRINT IN FUTURE YEARS NPV EX PRESSES 69 PRINT THESE FUTURE AMOUNTS IN PRESENT 78 PRINT TERMS AND SETS THIS UNT OFF 73 PRINT AGAINST THE INITIAL CAS H OUTLAY 76 PRINT IF THE NPV IS POSITIVE IT BS
123. Printer BOTEK Serialto Parallel Interface COLOR ACCESSORIES 26 2226 RS 232 Program Pak 26 3012 Deluxe Joystick EACH 26 3017 64K RAM Kit 26 3008 Joysticks 26 3016 Keyboard Kit III about a second after pressing A To return to the menu press the clear key Ientered the data from Table 1 and printed it out to produce the diagram in Fig 1 You can use the same data to practice using the program See program listing on page 50 Address correspondence to Terry Riegel P O Box 389 Laramie WY 82070 Circle Reader Service card 124 CALL TOLL FREE 1 800 248 3823 LIST OUR PRICE PRICE 139 95 12000 Telewnter6A Tape 19995 16900 Telewriter 64 Disk 34995 295 00 VIP Writer 27995 230 00 VIP Speller 19995 16900 Database 39995 29900 VIP Terminal Disk 49995 38500 TOM MIX Software 45900 485 00 RADIO SHACK Software MONITORS OUR PRICE CALL COMREX 12 Green Monitor CALL COMREX 12 Amber Monitor 27500 COMREX 13 Color Monitor 41500 Montlor 33500 VIDEOPLUS Monitor Adaptor 5900 GORILLA LIST OUR PRICE PRICE 7995 6800 26 3018 Extended Basic 3900 3400 26 1175 Direct Connect Modem 6995 5900 26 1173 Direct Cennect Modem II 2495 2100 SignaimanModem 300 1200 Baud 3995 3400 Hayes Modems dt aq COLOR COMPUTER SOFTWARE OUR PRICE 49 95 59 95 59 95 49 95 59 95 49 95 CALL 15
124. RIUIRIU 1D6BD1 127 DATA ND6D1R1D1R1D2R1D1R1U5D 6BD1 1299 DATA BD1R1U1R2D1R1D4L1D1L2U 1L1U4BD6BR4 1318 DATA ND6R3D1R1D1L1D1L3BD4BR 4 1338 DATA BDIRIUIR2DIRIDA4LIDIL2U 1L1U4BD4BR1D1U1D1R1D1R1BR1 1350 DATA ND6R3DIRIDILIDIL2RIDIR 1D1R1N1L1BR1BD1 1378 DATA BR4BD1L1R1L1U1L2D1L1D1 R1D1R2D1R1D1L1D1L2U1L1BD2BR4 1399 DATA R4L2D6BD1BR2 1418 DATA DSRIDIR2UIRIUSBD7 1438 DATA D4R1D1R1N1U1R1U1R1U4BD 7 1450 DATA D6UIRIUIRIUIDIRIDIRIDI NU6BDI 1478 DATA DIRIDIR2ULIRIULIBL2BD3JLI D2L1N1BR2BU3R1D2R1D1BD1 1498 DATA DIRIDIR2UIRIUI1BL2BRD3D3 BR2BDl 1518 DATA R4D1L1N1L1D1L1D1LL1D2R4 BDl 1511 DATA NR3D6R3BRIBDl 1512 DATA DIRIDIRID2RIDIRIDIBDI 1513 DATA BR1R3D6L3AR3BD1 1514 DATA BR2D6U6DILIDILIR3UIDIR 1BD5 1515 DATA BD3R4L4R1U1D2R1D1U4BR2 BD6 1516 DATA BD6BL2R1BD1BL1 1528 FOR X 48 32 TO 57 32 READ L S X NEXT X 1530 DATA BDIDA4RIDIR2UIRIUALIUIL 2D2R1D2RID2BRIRBDI 1548 DATA BDIBRIRILIRIUIDGL2R4BD 1 1558 DATA BDIRILIRIULIR2DIRIDILID 1 2011 10284 1 1568 DATA BDIRILIRIULIR2DIRIDILID 1L2R2DIRIDILIDIL3BR4BDl 157 DATA BR2R1L1D1L1D1L1D2R4L1U 4D6BRIBDl 1588 DATA NR 4D2R3DIRID2LIDIL2UIL 1BD1BR4BD1 159g DATA BR3L2D1L1D4R1D1R2U1R1U 1L1U1L3BD3BR4BD1 1688 DATA ND2R4D2L1N1L1N1L1D1L1D 1BR4BD1 1618 DATA R4D2L1D1L2U1L1U2BD6NR4 U2RIUIR2DIRID2BDI 1628 DATA BDIRILLIRIUIR2DIRID2L3U 1L1BD3R1L1R1D1R2U1R1U2BD3BD1 1639 FOR X 32 32 47 32 READ L S X NEXT X 164 DATA BD7BR4 1658 DATA BR2N1U1N4BD3U1BR2 166 DATA BR1D3B8R2U3D3BD
125. RS 80 i and Osborne Kaypro IBM and others needing an index hole on 2 1 90 add 2 00 each order P amp H 5 00 foreign P amp H Florida residents add 5 Sales Tax SATISFACTION GUARANTEED OR YOUR MONEY BACK ORDER TODAY Toll Free 1 800 642 2536 Florida 305 493 8355 send Check Money Order to NIBBLE COMPUTER PRODUCTS 4211 NW 75th TERRACE DEPT 15 LAUDERHILL FL 33319 Parents Want to stimulate your child s learning TCE S EARLY LEARNING SERIES ABC S In Color Mr Bear Count A counting program that will tantalize the youngest member of your family Speed your child s learning of the Alphabet CoCo 16K ECB Tape 19 95 Disk 25 95 Alpha Memory Your child can master the lower and upper case letters of the alphabet while having fun CoCo 16K 16 95 Basic Math Learn to add amp subtract counting CoCo 16K ECB Tape 12 95 Disk 16 95 Mix amp Match A brilliantly colored constantly moving computer version of concentration CoCo 16 12 95 Disk 16 95 Disk 20 95 through experience the value of money Mr Bear Flash Card After your child has mastered Mr Bear Matb continue his her learning with Mr multiplication amp division flash card CoCo l6K 15 95 Disk 19 95 Mr Piggy Program will aid your child in learning CoCo 16K 15 95 Disk 19 95 Mr Bear Math Add amp subtract with Mr Bear You
126. SBRI 167 DATA BRIDIUIDGU2LIRA4L1U4D2R 1L4R3D4BR1BD1 168 DATA BR2D1UID6BR2BUSL4D2R4D 2L4BR4BD2 169 DATA D1U1BR4D1LIDLLID2LINLL 1D1BR4U1D1BD1 178g DATA NR3D1R1D1R1U1R1L1D4L2U 2D2RAULIDILIDIBDIBRI 1718 DATA BR2D3BD4BR2 1728 DATA BR1R2L2D1L1N4R1D1R1BD1 BR1 1738 DATA BR1R1L1R1D1R1D4L1D1L2B R3BD1 174 DATA D1R1D1R2U1R1U1BL2BD3L1 D2L1D1BR2BU3R1D2R1D1BL2U6D6U3L2R 4BD4 1758 DATA BR2BD1D1U1D4U2R2L4BR4B D4 1768 DATA BR2BD5D1U1D1L1N1BR3 1765 DATA BD3BRIR2L2BD4BR3 1778 DATA BR2BD5D1BD1BR2 178 DATA BRA4DIUIDILIDILID2LIlDIlL 1D1BR4BD1 179g FOR X 58 32 TO 64 32 READ L X NEXT X 18998 DATA BR1BD1N1R1U1L1BD3D1R1U 1L1BD38R3 1810 DATA BR1BD1D1R1U1L1BD4D1R1U 1L1D1R1D1BR2 1828 DATA BR3D1U1D1L1D1L1D1L1R1D lRIDIRIDIBDIBRI 183 DATA BR1BD2R2L2BD2R2L2BD2BR 3 1 184 DATA BRIDIUIDIRIDIRIDIRILID 1L1D1L1D1BD1BR3 1858 DATA BDIDIUIRIUIR2DIRIDILID 1L1D1BD1D1BR2BD1 1868 DATA BR1R2L2R2D1R1D4L1D1L2U lL1U2RIUIRIDIRILIDIRILIDIRILIDIRB D1BR2 187 RETURN 2998 IFS THENRUN ELSE PRINT SECTOR EDIFICATION 2001 SS SEC SUBJECTAKE UNT 2030 1 1 58 2949 B 1 2846 A 32 2858 IFS 14THENE l4ELSEE S 2851 IFGF l1THENGF 9 GOTO2969 2955 CLS 2968 PRINT08 2061 IFB lt 1THENGF 1 GOTO2949 2062 IFE gt S THENE E 1 B B 1 2063 IFS lt 15THENCLS 2869 55 0 2070 FORX B TOE 2988 PRINT CHRS X 64 55 x 2090 PRINTTAB 17 2
127. STARTED IN THE FIRST RA M BANK Doctor ASCII Program Listing 1 PUTLDR 18 PUTLDR BAS V1 9 29 CLEAR 1999 CLS PRINT PUTLDR PROGRAM 40 PRINT BY 59 PRINT J W JACKSON 60 PRINT FOR 78 PRINT HOT COCO 88 PRINT lt C gt 1984 90 IF YC gt THEN 149 100 REM ADDS AN AUTOMATIC LOADE R 11g REM TO A BINARY FILE ON DIS K 128 REM SO THAT WHEN THE FILE I S 13 REM LOADM D IT AUTO STARTS 14 PRINT PRINT SELECT OPTIONS 158 PRINT 1 DISPLAY FILE ADDRES SES 168 PRINT 2 PUT AUTO LOADER 17 PRINT 3 REMOVE AUTO LOADER 188 PRINT 4 QUIT 198 INPUT YOUR CHOICE lt 1 2 3 4 gt sc 20 IF YC lt 4 THEN GOSUB27f IF FE 3 21 IF YC lt l YC gt 4 THEN 3f 228 IF YC 3 THEN UNS Y ELSE UN N 23 YC GOSUB 360 620 380 260 24 IF 2 OR 3 THEN GOSUB 3 6g 258 260 END oo o e e e e e e HG e e d d d d x 27 CLS PRINT ENTER FILENAME PR INT lt DRIVE gt FILENAME lt EXT gt LIN E INPUT AS 288 CM INSTR 1 AS 298 IF C lt 3 THEN 320 38g DRS MIDS AS CH 1 1 31 AS DRS LEFTS AS C 1 328 IF 5 1 5 B AND 1 THEN BIN 338 GOSUB819 CHECK FILE EXISTS 340 IF FE THEN GOSUB 969 RETUR N 35g RETURN 368 GOSUB389 GET FILE ADDRESSES 37 INPUT PRESS A KEY ZZS RET URN 389 EA 8 L 28 S 9 0S 1 UA Q GET F ILE ADDRESSES 398 OPEN D 1 A 1 499 FIELD 1 1 AS BS 41 GET 1 0S TI ASC
128. TA 36 2 167 132 294 227 7 237 1488 DATA 149 249 204 2 27 72 196 14g 18g 1499 DATA 38 196 57 63 192 207 48 243 12 252 158g DATA 3 255 Bg 128 g 77 9 98 p 9 1518 DATA 52 96 49 14 23 3 51 14 238 48 1528 DATA 72 294 1 237 13 2 237 39 294 9 153 DATA 128 77 37 6 38 7 167 132 32 154 DATA 3 64 96 132 192 1 26 37 10 38 7 1558 DATA 231 38 32 3 8 96 7 38 231 65 231 1568 DATA 149 1 129 39 48 37 6 48 3g 157g DATA 167 65 39 137 77 39 37 231 1490 13 158 DATA 231 14 14 198 128 5 231 149 11 95 72 1598 DATA 37 4 129 37 4 128 293 168g DATA 199 149 252 36 24g 166 132 74 39 1619 DATA 76 89 237 132 198 65 23 255 54 142 1628 DATA 162 232 128 202 2 247 255 32 134 1630 DATA 128 74 38 253 14g 162 32 38 239 23g 1648 DATA 65 23 255 31 53 2 24 23 255 118 48 1658 DATA 141 254 154 79 76 167 149 37 236 10 1669 MATA 224 141 255 121 37 v 32 192 Ll 34 28 1678 DATA 231 149 14 16 141 2555 109 87 19 129 1688 DATA 6 34 15 68 74 71 138 B 167 149 169g DATA 3 141 31 284 1 g 1 1 Listing continued June 1985 HOT CoCo 49 222 114 485 33 170 DATA 166 149 248 129 3 38 203 79 95 126 1719 DATA 189 244 189 179 23 7 134 13 61 48 141 1729 DATA 254 85 48 133
129. TAPE OAD FROM TAPE DIT SECTORS HANGE SUBJECT HANGE NOTE XAMINE GRAPH 795 INPUTA 819 ON A GOTO1992 829 869 29gg 3g 99 4999 289 828 IF 5 THEN RUN ELSE POKE654 94 0 CLS PRINT k kkkk kk x de He e e e e e e e e d n SAVE TO TAPE 8398 PRINT PRINT INPUT AN EIGHT L ETTER NAME FOR YOUR GRAPH 123 45678 LINEINPUTAS 840 OPEN O 1 A PRINT SAVING AS 858 PRINT 1 S FORX l1TOS PRINT 1 S X S X NEXTX PRINT 1 SBS NTS CLOSE 1 GOTO789 868 POKE65494 9 CLS PRINT RR CUR RR RR GA A KG UAR A A LOAD FROM TAPE 8798 PRINT PRINT WHAT IS THE OF THE FILE LINEINPUT 5 880 OPEN I 4 1 A PRINT LOADING AS 89g INPUT 1 S 999 FORX 1TOS INPUT 1 S X S X INPUT 1 SBS NT CLOSE 1 GOTO78g 91 INPUT 1 SS X S X 929 1 60 0900 939 S X 2 3B SS X 1 NT SS X 94 CLOSE 1 GOTO789 1999 FOR X 65 32 TO 96 32 READ L X NEXT X 1910 DATA BD2D4U4RlUIRIUIDIRIDIR 1D2NL4D2RDl 1930 DATA R3DIRIDILIDIL3NU3D3R3U 1R1U1BD3 1958 DATA BD1R1L1R1U1R2D1R1BD4L1 R1L1N1L2U1L1U4BR4BD6 MON Un C NO I moaomctcuo 107 DATA R3D1R1N4L1N1L3U6BD7BR 4 149 DATA NR4D3NR2N3R4BD1 111 DATA NR4D3NR2D3BR4BD1 113 DATA BDIRILIRIUIR2DIRIBDJ3L2 R2D1L1D1L2U1L1U4BD6BR4 1158 DATA D3R4NU3D3BL4U3BD4BR4 117 DATA BR2L1R1L2R1D6L1R2BR1BD 1BR1 1198 DATA BR3L1R1L2R1D6L1U1L1BD2 BR4 1210 DATA D6U3RIUIRIUIRIUIRIRD3B L3D1R1N1R1D1R1BN1 1230 DATA D6R4BD1 1259 DATA ND6DIRIDIRIDIUI
130. TEMP 91 67 REM 688 FOR X 1 TO YEAR 690 GOSUB 2999 78g CV X A X PV X 71 SUM SUM CV X 728 NEXT X 73 REM 74 NETPV SUM INITIAL 75g gt THEN GOTO 1999 768 NEXT 0 77 IF lt THEN GOTO 1959 1999 REM OUTPUT SECTION 101 IRR TEMP 1 19g 1929 PRINT PRINT THE IRR IS IRR 103 GOTO 1199 1950 PRINT THE PROJECT HAS NE GATIVE RATE OF RETURN 1199 INPUT IF YOU WANT TO CONTI NUE TYPE Y ANSS 111 IF 55 Y THEN 100 Listing continued June 1985 HOT CoCo 51 Listing continued 15gg END 16gg REM 2999 REM SUBROUTINE CALCULATES P RESENT VALUE 2918 PV X 1 2928 FOR Z 1 TO X 2938 PV X TEMP PV X 2040 NEXT 2 2959 PV X 1 PV X 2968 RETURN 3998 REM SUBROUTINE DISPLAYS COM PUTAION 3919 CLS 302 FOR X 1 TO YEAR 39398 PRINT YEAR X CASH INFLO W A X 3949 PRINT AMOUNT IN TODAYS TERM S CV X 3942 INPUT PRESS Y TO CONTINUE SNS 3043 IF NS Y THEN 3945 3945 NEXT X 3858 PRINT LESS INITIAL OUTLAY INITIAL 3969 PRINT NPV IS 307 RETURN Fabulous Fonts for the Gemini lOX Program Listing Fabulous Fonts 19 GOTO569 DLCSET G 19X DOWNLO AD CHRS 20 5 amp 0 239 LS CHRS 13 CTS CHRS 27 CHRS 42 CHRS 1 S8S 8H480g J228 J32J2 Lg z amp H3A4B L9 L8 4969 CLS PRINT 169 CLEARING MEMORY FORI L TOL9 5 255 C
131. THEN 18g 199 IF AS THEN U X 32 S 1 GOSUB 269 X X 32 1 28g IF AS THEN U X 32 5 1 GOSUB 26g X X 32 1 21 IF AS A THEN V Y 32 5 1 GOSUB 279 Y Y 32 1 220 IF 5 2 THEN V Y 32 5 1 GOSUB 278 32 BsB 1 238 SS SS AS 249 IF PPOINT 48 48 8 AND PPOIN 28 28 8 AND PPOINT 48 23 8 A ND PPOINT 68 28 8 AND PPOINT 74 48 8 AND PPOINT 68 68 8 AND P POINT 48 74 8 AND PPOINT 28 68 8 AND PPOINT 23 48 8 THEN SOUN D RND 2828 1 POKE 65494 0 GOTO 24g 25g GOTO 18g 268 GET U V U Q V4W M G FOR H U TO X STEP S PUT H V H Q V W M PSET NEXT H RETURN 27g U X GET U V U Q V W M G FOR H V TO Y STEP S PUT U H U Q M W M PSET NEXT H RETURN 280 END 29 REM TYPE POKE 65494 AND PRESS ENTER AFTER USE Program Listing 3 Consarnation 198 REM CONSARNATION PUZZLE CONTEST 2 118 REM COLOR BASIC AND 10 BASIC 128 CLEAR 5g 130 1024 FOR MC 19 MAKE IT P 16384 14 CLS DIM AS 8 0 70 175 5 2 158 9 9 4227154332 160 as l 6 1 9 4 3 7 178 AS 2 5 53111 49 2 5 1 18g AS 3 2 4 4 9 4 198 AS 4 1 1753769432 288 AS 51s 6 4 3 8 2 219 AS 6 1 6 8 29 346 3 8 9 2298 FOR 7 TO 288 STEP 32 PRI NT 5 2 2 2 1 NEXT 238 FOR x 37 TO 59 IF X 37 OR X 59 THEN FOR Z X TO X 256 STEP 3 2 POKE 2 NEXT Z 248 POKE P X 175 POKE P X 256 K NEXT X 258 FOR X 194 12 STEP 4 FOR Z
132. The 80K Color Computer Henry C Grace 70 How Your CoCo Adds Up Frank Tipps Maximize memory use through bank switching It s all binary 6 Digressions Michael E Nadeau 78 6809 On Line Bobby Ballard Happy Anniversary to us A fix for Videotex 8 Instant CoCo Directory 79 Assembly 101 Victor and James Perotti 10 How To Use HOT CoCo What s in a program 12 Letters To The Editor 81 Reader s Forum 18 Doctor ASCII Richard E Esposito and Ralph E Ramhoff 84 The Learning Page Nancy Kipperman The computer literacy problem 22 Mindbusters Richard Ramella Product N m The Fifteen Puzzle 88 Product News J Scot Finnie Computer Systems Distributors Creative Technica Consult ants TCE Saguaro Software Tandy Vidtron and more 89 Index To Advertisers 89 Coming Next Month 24 NEW The Computer Room Scott L Norman Not all database managers are the same 30 Feature Review In Search Of 128K Scott L Norman Two 128K upgrades compared 33 Reviews edited by J Scot Finnie 91 CoCo For Hire Terry Kepner and Linda Tiernan Zookey Sidewise Edittron Dual DOS Switcher 96 The Corner Office Jeff DeTray and more The survey results are in HOT CoCo ISSN 0740 3186 la published by CW Communications 80 Pine St Perefhorough NH and additional mailing offices Subscription rates in U S are 26 97 for one year 538 for two years and 53 for three years in Canada and Mexico 27 97 one yeer only U S funds Second class po
133. WIN FO R J 1 TO 5f SOUND RND 13 13 1 NEXT J END 288 GOTO 259 299 IF 5 AND Y lt 4 THEN MIDS 5 2 5 5 1 2 MI 5 5 1 2 5 Y Y 1 J 1 399 IF 5 2 AND Y gt l THEN MIDS 5 2 5 5 1 2 MI D AS Y 1 X 2 2C Y Y 1 1 31g IF BS AND lt 1 THEN MIDS AS Y X 2 MIDS AS Y X 3 2 M IDS AS Y X 3 2 CS 3 J 1 329 IF B AND 21 THEN MIDS 5 2 5 5 3 2 MI 5 5 3 2 5 X X 3 1 330 PRINT FOR 2 1 TO 4 PRINT 5 2 NEXT RETURN 34 END Program Listing 2 Bull s Eye 18g REM BULL S EYE TRS 8f TENDED COLOR BASIC 16K RAMELLA llg POKE 65495 0 PCLEAR 2 PMOD E l l COLOR 3 9 PCLS 1 SCREEN 3 1 DIM M 31 31 129 DIM K 6 5 FOR X TO 5 FO R TO 4 IF lt 1 OR Y 1 OR X gt 4 OR Y gt 3 THEN K X Y 1 138 NEXT Y X FOR Z 26 TO 32 STE P 6 CIRCLE 48 48 2 4 NEXT INT 48 21 4 4 14g FOR Y TO 64 STEP 32 FOR X g TO 96 STEP 32 158 LINE X Y X 32 Y 32 PSET B LINE X 1 Y 1 X 31 Y 31 PSET NEXT X Y 169 48 48 3 3 PAINT 125 3 2 3 PAINT 125 92 2 3 17 COLOR 4 8 LINE 198 45 116 5 5 2 2 X 33 Y X Q 32 W 32 188 AS INKEYS IF A lt gt A AND 5 lt gt Z AND AS lt gt AND AS lt gt OR AS A AND K A B 1 1 OR AS Z AND 1 1 OR 5 AND K A 1 B 21 OR 5 AND K A 1 B l
134. a good one We urge any one writing programs for HOT CoCo to keep this in mind eds TRSCOPY Bug There is a minor omission in the otherwise excellent new TRSCOPY routine from Radio Shack Basic 09 won t load a transferred etters to the Editor ASCII Disk Basic program Apparently TRSCOPY doesn t assign the proper OS 9 file header language value in the conversion This value is included in the file header to prevent crashing the system if you load a wrong module However most security measures can be defeated with a little experimentation The key is to fool OS 9 and Basic 09 by either modifying the file header language value or by imbedding the offending file in another file with the proper characteristics You can do this with an Assembly language routine but it s simpler to create a one line Basic 09 program file with just a REM statement and save it Next use OS 9 s merge utility to com bine the first two files the legitimate file must be listed first You can then load the new merged file This method seems to work because OS 9 checks the header data only once when you use Basic 09 I hope Tandy notices this and issues a new version that handles Disk Extended Color Basic to Basic 09 conversion more readily Files of type BAS should receive the proper header language value when converted to OS 9 Fred Niemczenia Fort Meyers FL s2 pOrt v t 1 To bear the weight of especially from underneath
135. ac Attack 2495 Model 1000 999 PBH Ser Par Conv 69 Block Head 26 95 Model 1200 2595 64K Upgrade Kit 49 Lunar Rover Patrol 2495 Model 2000 2 Drive 2299 Radio Shack Deluxe Keyboard 35 95 Lancer 24 95 MODEMS HJL Keyboard 7995 Typing Tutor 23 95 Hayes Smartmodem II 245 Radio Shack CCR 81 Recorder 52 Galagon 24 95 Radio Shack AC 3 425 Radio Shack Del Joystick each 35 95 Scott Adams Adventures 19 95 Radio Shack DC Modem I 89 Radio Shack Joysticks pair 22 Sea Dragon 34 95 Radio Shack DC Modem II 160 Video Plus monitor adapter 24 95 Colorcome 49 95 Radio Shack DC Modem 2212 315 Video Plus 3995 Telewriter 64 49 95 PRINTERS Amdek Color 300 265 Deft Pascal disk 79 95 Radio Shack TRP400 229 Amdek Video 300 Green 145 Elite Calc 59 95 Radio Shack DMP105 460 Amdek Video 300 Amber 159 VIP Writer tape amp disk 69 95 Radio Shock DMP410 305 Taxan Color 220 Monitor 245 VIP Calc tape amp disk 69 95 Radio Shock DMP430 660 Taxan 115 Green 125 VIP Terminal tape amp disk 49 95 Radio Shack CGP220 ink Jet 545 Q 9n 116 Amber 129 VP Database disk 59 95 Silver Reed EXP500 D W 430 Radio Shack VM 2 139 VIP Integroted Librory disk 149 95 Star Gemini 10 289 SOFTWARE Tope Version Graphicom disk 29 95 The Soilor Mon 29 95 2al Cenin NM MC Hn The King 2695 Order 2 software pieces listed C Itoh Prowriter 8540 320 Buzzord Boi 27 95 take 10 off their listed price Okidata and Epson CALL Worlds of Flight 29 95 All Radio Shack softwar
136. age In this mode an expanded CoCo becomes two 64K com puters although only one can run its resident program at a time This is the approach taken by the Dynamic Electronics expander kit reviewed here The extra memory provided by some upgrade kits is divided into two pages or banks of 32K residing at the lower addresses It is possible to keep the Basic ROMs active while loading as many as three 32K programs into the computer at once one in the lower 32K of the original RAM and two more in each half of the additional 64K of memory provided by the upgrade kit The DSL expander uses this technique Kit Installation Both of these memory expanders come with all soldering com pleted but installation of the kits still requires care and effort The installation procedure for Dynamic s ME 128 64 described here is similar to that of DSL s 128K the Easy Way First you remove 10 of your CoCo s ICs integrated circuits eight memory chips the SAM and one of the two PIAs peripheral interface adapters Eventually you reinstall these in new sockets that ride piggy back on additional chips including a complete bank of RAM plugged into the computer s circuit board For the Dynamic you must also drill a hole in your CoCo s case to install the bank selec tion toggle switch The most difficult task for nonhobbyists is likely to be the re moval of the 40 pin SAM and PIA There isn t much room to ma neuver your tools factory installed ICs of
137. aler enables you to test your strategy by playing the desired number of hands using your techniques amp tendencies Agreatteacherfor new Blackjack players and a valuable tool for the veteran player Both programs included 32K extended Tape 24 95 Disk or Amdek 29 95 A graphic enhanced lunar lander simulotor The pilot breaks out of lunar orbit and attempts a sott landing on the lunar surface Joysticks control thrust craft oltitudes and information is continually displayed on honzontal and vertical velocities acceleration values vertical and harizontol dis tances from target fuel consumption and much more On advanced levels problems such os fuel leaks and computer screen fallures can provide hoir raising final approaches Disk version allaws chaice of landing site between Mars and Earth s moon Takeotts from the surface can be made and the upper stage placedbackinorbit The simulation 15 as educotionat as is fun and exciting Superb graphics A great tool for that future astronaut or physicist 32K 2 joysticks required Tape 2495 Disk or Amdek 2995 Sketchpad Sketchpad s graphics drawing program designed to provide the computer hobbyist with easy manipulation of the powerful graphics capabilities of the Coco Advanced pragrammers can design graphics screens and characters for Basic and ML programs and games Sketchpad was used to create the graphics for Eagle Two joysticks control cursors that provide
138. am that you can type in just like a Basic listing yet it operates much like one written in Assembly If you want to run one of HOT CoCo s As sembly listings but it hasn t been converted to DATA statements and you do not own an editor assembler check to see if the program is included on our Instant CoCo cassette All Assembly programs on Instant CoCo are in assembled form meaning you can load and execute them immediately Speaking of DATA Statements Since DATA statements often consist of numbers only it is easy to make a mistake typing them in One wrong number can crash the program or lock up your machine When this happens the only way to recover is often to turn off the computer for a few seconds and then turn it back on Of course this wipes out your program in memory To avoid this always save what you have typed in before running it That way if you did make a mistake you can load the pro gram from tape or disk to look for the error rather than retyping the entire listing Onelast thing about DATA statements Er ror messages that occur due to a mistyped DATA statement line will refer to the corre sponding READ statement line earlier in the program Yet it is the DATA statement that in incorrect If All Else Fails If you cannot get your typed in listing to run after checking and double checking for typos you can ask us for help Send a de tailed description of your problem along with any error messages g
139. an 25 cents When an adjustment is made for inflation earnings of 150 000 annually over 10 years System Requirements 16K RAM Extended Color Basic in plants and machinery an individual buy amount to only 752 818 far short of the 1 5 million return computed earlier At this rate of return investment in the project would be unwise since payback falls short of the initial 1 million spent Net Present Value The best way to assess the return on an investment taking into account the time value of money is by using the net present value NPV technique The Program Listing prompts you through the process of comput ing this value First supply the number of years over which you expect cash inflow from the in vestment The program allows a maximum investment analysis period of 15 years If you require a longer period alter the DIM statement in line 10 to A n PV n CV n where nis the number of years The program then asks for the initial cash investment in the warehouse example this was 1 million and goes on to request cash inflow for each year over the life of the in vestment While this figure was 1 5 million every year for the warehouse it may vary from year to year so you must enter the ex act yearly values The next item requested is the discount or market rate This is the projected inflation rate the cost of capital to the firm or the market rate of interest The program now has sufficient data
140. ance Il is possible to build a report specification at the moment you need it us ing nothing but Elite File itself but it will not be saved for future use That getsawkward unless your reporting needs are awfully sim ple It s a pity too because Elite File has enough other bells and whistles to merit se rious attention CoCo Cookbook This product caters to the electronic scratchpad market It requires you to learn almost nothing about database technology since the records are not officially divided into fields You just enter information about a given topic as a chunk of text you can eas ily edit a file and retrieve records but more complicated sorting and report generation procedures are out I tend to use this kind of program as a loosely organized reminder of my progress on various personal and busi ness projects telephone calls made things to check into and so on It s hard to believe that a product called CoCo Cookbook can handle data manage ment Well the fact is thatCookbookis really a general purpose free form data manager at heart you can think of the jargon peculiar to its recipe storage application as having been tacked on after the fact It should be possible to remove all specific references to cooking and thus customize the program but I ll leave that for a future column CoCo Cookbook entries can be as long as 3 040 characters but the program will only recognize parts of a 45 character title whe
141. argain is bargain only so long as It lasts If you shop carefully we think you will agree The HJL 57 Is the last keyboard your CoCo will ever need And that s real value Order Today Only 79 95 the HJL 57 is available for immediate shipment for either the orlginal Color Computer sold prior to October 1982 or the F version and TDP 100 Introduced In October 1982 and the new 64K CoCo Now also avallable for CoCo 2 Call Toll Free 1 800 828 6968 In New York 1 800 462 4691 Pr OD Gets Div of Touchstone Technology Inc 955 Buffalo Road P O Box 24954 Rochester New York 14624 Telephone 716 235 8358
142. atible with TELEWRITER ASCII amp other word processors SMOOTH WALKIN AUTOTERM moves smoothly and quickly between word proces sing and intelligent terminal action Create text correct your typing errors then connect to the other computer upload your text download information file it and sign off then edit the received data print it in an attractive format and or save it on file Editing is super simple with the cursor Find strings instantly too Any operating parameter such as screen width can be altered at any time Uncompleted com mands can be cancelled CASSETTE 39 95 DISKETTE 49 95 Add 3 shipping and handling MC VISA C O D PUTTY IN YOUR HANDS The word processor can be used to create print and or save on file your personal KSMs They let AUTOTERM act like you For example it can dial through your modem sign on interact perform file operations amp sign off an entire session without your help KSMs can answer the phone prompt the caller take messages save them hang up and wait for the next call The KSM potential is unbelievable NO OTHER COMPUTER IN THE WORLD CAN MATCH YOUR COCO S AUTOMATIC TERMINAL CAPABILITIES WHAT THE REVIEWERS SAY AUTOTERM is the Best of Class Graham RAINBOW 6 83 The AUTOTERM buffer system is the most sophisticated and one of the easiest to use Banta HOT CoCo 9 84 Almost a full featured word processor Ellers R
143. ation automatic centering auto matic flush right underlining superscripts subscripts pause print single sheet pause and print comments SType ahead typamatic key repeat and key beep for the pros ERROR DETECTION and UNDO MISTAKE features 3 PROGRAMMABLE functions auto column creation and instant on screen HELP Radio Shack Catalog No 90 0141 32K Comes with tape amp disk 69 95 VIP Writer VIP Speller Combo comes in VIP Writer Binder Parter CEP re 1 VIP Speller VIP Speller 15 the fastest and most user friendly speller for your CoCo It can be used to correct any ASCII file including VIP Library files and files from Scripsit and Telewriter It automatically checks files for words to be corrected marked for special attention or even added to the dictionary You can even view the word in context with upper and lowercase VIP Speller comes with a specially edited 50 000 word dictionary and words can be added to or deleted from the dictionary or you can create one of your own Radio Shack Catalog No 90 0142 32K DISK ONLY 49 95 ere trademark ot Tandy Con md Y 2 Yam trademarks ol Development Com lemak of Software Peoddur ts International not work with JDOS VIP Programs ce VIP Database ONE OF THE BEST JULY 1984 RAINBOW This high speed MACHINE LANGUAGE program fills all your information management needs be they for your business or home And it do
144. automatically to save money when calling long distance Recommended baud rates are 110 and 300 Radio Shack Catalog No 90 0139 32K Comes with tape amp disk 49 95 Tape works in 16K but without hi res displays VIP Disk ZAP RAVED ABOUT IN THE APRIL 1983 RAINBOW Your database file disk form letter disk or BASIC program disk goes bad An 1 0 error stops loading or even backing up of the disk Weeks even months of work sit on the disk irretrievable Now catastrophic disk errors are repairable quickly and with confidence using the VIP Disk ZAP is the ultimate repair utility for simple and quick repair of all disk errors Designed with the non programmer in mind the VIP Disk ZAP will let you retrieve all types of bashed files BASIC and Machine Code programs The 50 page tutorial makes the novice and expert Radio Shack Catalog No 90 0144 16K DISK 49 95 Available By Express Order Ask to see the demonstration diskette To Order Direct Call 1 800 328 2737 e Order Status and Software Questions call 805 968 4364 MAIL ORDER 1 00 U S Shipping per product the library rs two products 600 CANADA 2000 OVERSEAS Personal checks allow 3 weeks pro ore ubyert tee hange wiwa aibid 132 Goleta California 93117 Circle Reader Service card 212 Technologies TRIAL is Vind LIU nt Tandy trademark ot 1985 by Softlaw
145. chain printing feature means that the size of your text is never limited by the amount of memory you have and Telewriter s advanced cassette handler gives you a powerful word processor without the major additional cost of a disk One of the best programs for the Color Computer I have seen Color Computer News Jan 1982 TELEWRITER 64 But now we ve added more power to Telewriter Not just bells and whistles but major features that give you total control over your writing We call this new supercharged version Telewriter 64 For two reasons 64K COMPATIBLE Telewriter 64 runs fully in any Color Computer 16K 32K or 64K with or without Extended Basic with disk or cassette or both It automatically configures itself to take optimum advantage of all available memory That means that when you upgrade your memory the Telewriter 64 text buffer grows accordingly In a 64K cassette based system for example you get about 40K of memory to store text So you don t need disk or FLEX to put all your 64K to work immediately 64 COLUMNS AND 85 Besides the original 5 column screen Telewriter 64 now gives you 2 additional high density displays 64 x 24 and 85 x 24 Both high density modes provide all the standard Telewriter editing capabilities and you can switch instantly to any of the 3 formats with a single control key command The 51 x 24 display is clear and crisp on the screen The two high density modes ar
146. ches on the sockets The notches point toward the rear of the computer Move all jumpers to the 16K position Replace the shield and close up the machine and you are done Continued on p 54 PIN 35 RESI R 24 33 ESISTOI Fig 1 Chip Pin Location 30 GAUGE L Fig 2 The Piggyback Upgrade June 1985 HOT CoCo 41 There s only one newsstand in the entire world offering you this selection of S computer publications world 2094 ENS COMES OF RE m IBM Powerful 7 New l ersonal m Computer KT ws Me 18M WILL REVAMP PC PRODUCT LINE Page 5 MICRO MARKETWORLD MACWORLD xiv i CoComa Wis as Woh OD On Com munications You re holding it That s right you can get them all here And at discounts So browse Whether you re new to computers an experi enced home professional user the business order yours today Computerworld l you manage information you can t manage without your own subscription 39 gets you 51 issues plus 10 Special Focus publications Save PC World The one publication that wil grow with your growing PC needs Helps you analyze financial accounting data manage complex projects communicate results and plan Now 12 issues for only 17 97 you save 5 78 InfoWorld The only way to stay on top of what s happening is by getting the only personal computin ne
147. ck and forth however the changeover is difficult You have to open up the computer and switch back and forth be tween the MC1372 chip and a resistor on the adapter board Buff is a well made piece of equip ment Its components are solidly attached to the board and loosen only with the applica tion of determined force One point to weigh before you buy TV Buff llc concerns repairs to your CoCo If you ever need to retum you computer for servicing you will have to un solder and remove the adapter and reinstall it after the repairs have been completed Performance The most important aspect of a video driver is how it measures up on your moni tor s screen I used TV Buff llc with mono chrome and color tnonitors and got sur prisingly different results TV Buff Ilc s monochrome quality was not as good as I expected I compared the text output to that produced by other adapters a brand name medium resolution monitor with a well known word processor in 50 64 and 85 character modes The characters that TV Buff produces are fatter and as a result somewhat harder to read than those I have found with other adapter products Neverthe less the picture quality is plainly better than that of a good TV My impression is that the picture is overdriven but I couldn t discover any way to correct the problem The color monitor mode produced differ ent results Because text is not the best ap plication with which
148. d a 1 000 prize to anyone who could complete a Fifteen Puzzle that began with the numbers ordered cor rectly except for the last two 14 and 15 which were reversed The tiles ofthe Fifteen Puzzle can be arranged in nearly 21 trillion combinations and exactly half of them are insolvable The wily Loyd had figured out an impossible arrangement his money was safe The public paid no attention to mathema ticians who published proof that trying to solve that particular arrangement was futile There were tournaments newspaper arti cles and disappointments Millions of the puzzles were distributed Numerous people claimed to have solved the puzzle but none could remember the moves when tested There is a simple rule for determining whether it is possible to solve a given presen tation of the Fifteen Puzzle Start with the first number of the puzzle Read the puzzle to its end determining how many lower numbers follow it Keep a separate running total to which you add a one for every lower number that follows When you have compared the first number to all the numbers that follow it and added a one to a running total for each lower number repeat the procedure for the second puzzle number and so on If the final total is an odd number that presentation of the Fifteen Puzzle can t be solved To make it solvable exchange any two puzzle numbers 22 HOT CoCo June 1985 All the presentations of the Fifteen Puzzle generated by Listin
149. d a disk drive and sells for 49 95 Computing Aids Some interesting new devices and products hit the market this month Syntel is selling a mo dem for the Color Computer that runs at 300 1 200 baud has an originate answer feature a self test and includes a modular telephone cable The modem sells for 129 95 Contact Syntel for more information The Scotch division of 3M has announced a low abrasive 5 4 inch disk drive head cleaning kit The Scotch Disk Drive Head Cleaning Kit contains one reusa ble cleaning disk and 10 pre measured packets of Scotch cleaning solution It sells for 11 99 Plugging In The Microcom puterist s Guide to Telecom munications is a new guide to the world ofelectronic commu nications Author Sasha Lewis has created a reference work de signed to help with the selection of hardware software and infor mation services Plugging In pro vides on line examples of many private and public services in cluding CompuServe The Source and Dialog s Knowledge Index The book sells for 11 95 in bookstores and is also avail able directly from the Chilton Book Company for an additional 1 75 for shipping Ones to Watch Simon says Goahead make my day Simon remembers every move you make on your keyboard in a Basic program When you are through Simon lets you store your keystrokes on disk The next time you want to perform that routine Simon List of Manufacturers Chilton Book C
150. d can be scrolled The screen s top line shows operating mode unused memory size memory on off and caps lock on off t also gives helpful prompts SWEET TALKIN KEY BEEP can be on off Unac ceptable keystrokes cause a lower pitched BOP This ERROR BEEBOP can be on off Talks to other computers with Full or Half Duplex Baud Rate of 110 150 300 600 1200 Parity as even odd mark space none 7 or 8 bit Word any Stop Bits all 128 ASCII characters true line Break XON XOFF protocol and optional line at a time transmis sion Able to send and receive text block graphics BASIC and ML programs A 64K machine holds up to 46 600 characters 34 900 in HI RES DUAL PROCESSING lets you review amp edit while more data is coming in RECOMMEND 32K to 64K Tape to Disk Upgrade 23 You Keep the Cassette YOU COULD FALL IN LOVE WITH AUTOTERM IT TURNS YOUR COLOR COMPUTERINTO THE WORLD S SMARTEST TERMINAL Fully supports D C Hayes and other intelligent modems Talks to your printer with any page size margins line spacing split word avoidance Embed your printer s control sequences for boldface underlining etc Narrow text can be automatically spread out You ll also use Autoterm for simple word processing and record keeping You can display directories delete files transmit directly from disk and work with files larger than memory Easily maintain a disk copy of an entire session Comp
151. d go There have been other comings and goings in those two years as well Software com panies large and small havefoldedor pulledoutofthe CoCo market But the lost support is more than offset by the greater number of new companies catering to CoCo users I started to count all the CoCo products available two years ago to compare that number with what wason the market now It wasa futile attempt There arethousands of products available in an unbelievably wide range of applications Funny how the general computer press says little of this Another thing you hear about in the general interest computer magazines is the number of them that have folded enough to make more than a few readers and advertisers nervous The reason for this is focus the whole personal computer phe nomenon is too big to cover in one magazine in more than the most general way Only one of these magazines has a regular feature dedicated to Tandy computers and not just the Color Computer at that System specific magazines such as HOT CoCo are better positioned to give the read ers what they need the nuts and bolts about their computer We think we have a pretty good future But what does the future hold The Future The two things that need changing the Color Computer s screen display and memory capacity At least a 64 character wide screen with true upper and low ercase is necessary for serious word processing or spreadsheet use 80 characters ar
152. d kicking goats falling rocks zinging arrows and more on your way to the summit 426 3089 3495 the Software You Your Choice 2995 8 EY i anesse i nourn Facemaker 5 ee exciting game to help your kids learn computer basics while they create an animated face 26 3166 learning with the computer as they identify and words It s fun and your kids will learn important math and spelling skills 26 3167 Dungeons of Daggorath You re pitted against a suc tory brings you closer to your ultimate foe the wizard 26 3093 Learning Programs from Spinnaker Kids on Keys Your kids will enjoy numbers letters ay cession of awe some beasts in the fearful dun geon Each vic 2995 Color Computer Kindercomp Introduce your chil dren to com puter graphics Even the youngest in your family will enjoy creating vivid color pictures and exciting sound effects by pressing a few keys 26 3168 Fraction Fever An exciting math contest Your kids will develop a real under standing of fractional rela tionships as they guide their graphic stick through this colorful game 26 3169 3 AX 19 gt gt Baseball This exciting game plays just like the big leagues You are the coach it s up to you to control the pitching de fense and running for ex tra excitement 2426 3095 2495
153. de POKE amp H3FB9 with 67 I hope this modification helps other read ers By the way I just love the new DMP 105 Ti rrrrnr s Ia Many people I know who bought more ex pensive printers are surprised at the number of features it has Neal Park Phoenix AZ Statistical Programs for 64K Stephen Hicks asked about statistical analysis programs for a 64K machine HOT CoCo October 1984 p 11 I wasn t sure I could help but I sent him references to three programs written in Basic To my surprise he wrote back to say he d received nine other replies all asking if he d found anything and suggested l write to you Enclosed are the references I have I d ap preciate hearing about similar program col lections regardless of the language Kanter Harold Computer Applications of Educational Measurement Concepts New York Macmillan 1985 oriented toward cor relational analysis Van Tassel Dennie Basic Pack Statistics Programs for Small Computers Englewood Cliffs NJ Prentice Hall 1981 the most di This Publication is available in Microform University Microfilms International Please send additional information tor a 2 Name Street State Zip_ 3 North Zech Road PR AnnArbor Mi 38106 June 1985 HOT CoCo 13 verse of the three and the most expensive Wolach Allen H Basic Analysis of Vari ance Programs for Microcomputers Montere
154. der Real Talker s unbeatable price Yet Real Talker has some important features that you simply will not find in other Coco talkers SAY command You ll have your computer talking brilliantly in just minutes thanks to this powerful new command Type SAY ANYTHING YOU WANT and your words are instantly spoken Tes that simple Think how easy this makes creating speaking Basic programs Adding speech to your existing programs is a snap too CONVERT This is a truly power ful command for the basic pro gramer CONVERT automatically transforms a machine language dependent speaking program into a stand alone Basic program In other words you can effortless write speaking Basic poetams that do not require a machine language translator in memory This is a uni que feature of Real Talker No other voice synthesizer gives you anything even remotely ap proaching this type of capability even synthesizers costing con siderably more Other features include software controlled pitch unlimited vocabulary text to speech and even a program that will recite any ASCII file such as from Telewriter 64 amp other word pro cessors You also get Colorware s unique full screen phoneme editor program that let s you experiment with and modify speech at it s most fundimental level TALK EAD if you have Real Talker do not deprive yourself of this absolutely incredible machine language Talking Head simulation program W
155. disk drives The 1 0 Disk ROM is incompatible with CoCo 2 s Disk Basic 1 1 Works faster than 1 0 but you can use the 1 1 Disk Basic controller with the older grey CoCos Also many rou tines have been moved making some pro grams written using the 1 0 Disk ROM incompatible with the 1 1 ROM See A Quick Fix for Your Disk ROM by Mike Mee han HOT CoCo February 1985 p 44 for a utility that overcomes this incompatibilty in most cases N I HARD DISK FOR TANDY 1000 introducing by OSICOM Inc 10 MB 10 MB Internal 20 MB External 20 MB Controller Drive in Controller Drive Internal enclosure with fan m Extern al ower supply ontroller Drive in Cables amp Manual Controller Drive cibles amp enclosure with fan 6 9 9 Cables amp Manual 59 7 5 vibe c Tni Easily user installed fully documented instructions System boots from hard disk without floppy diskette Runs Lotus DBASE II and Tandy 1000 software One year warrantee on all equipment Toll free technical support hot line Orders and Information 1 800 922 0881 TOLL FREE 201 540 0144 IN NEW JERSEY 421 PE p n _ 4 m 18 Bank Streel WU V Morristown N J 07960 ed Circle Reader Service card 4200 Requires Memory Expansion Board with DMA Controller 25 1004 COD no Surcharge Visa amp MC 3 Amex 5 Tandy is a registered trademark of Tandy Corporation
156. disk will get you up and running fast The DS 69 Digisector opens up a whole new world for you and your can be a security system take portraits analyze i signatures inspect assembly work the DS 69 is your COCO s eyes Use the DS 69 and a TV camera to get fast precise conversion of video signals into digital data C See is a menu driven software package included with your DS 69 It provides high speed 5 level digitiz ing to the screen high precision 16 level digitizing for superb hard copy printout and simple software con trol of brightness and contrast Or call our driver rou tines from your own Basic program for easy 64 level random access digitizing Pictures taken by the disk by C See and then edited by our optional MAGIGRAPH package for enhancements and special effects The DS 69 comes with a one year warranty C See supports both cassette and disk operation with the Multi Pak adaptor and requires 64K Cameras and other accessories are available from The Micro Works Let your COCO see the World m DS 69 Digisector amp C See Software 149 95 m MAGIGRAPH Graphics Package on disk 3995 Terms Visa Mastercard Check or C O D Purveyors of Fine Video Digitizers Since 1977 MICRO P O Box 1110 Del Mar CA 92014 619 942 2400 Circle Reader Service card 196 Tell them I saw it in HOT CoCo June 1985 HOT CoCo 23 Ihe Computer Room bu Scott L Norman True Life Adventures W
157. doing actual prob lems on computer spreadsheets instead of learning programming seems to have more value in my future and more relevance in my present curriculum Colleges and universi ties are already heeding such comments I predict that courses using the computer as a tool will crop up with increasing frequency on all levels Management Tasks Software will also play an important part in the management of teachers tasks in the classroom You can efficiently keep grade re ports progress charts and competency re sults on a computer tape or disk Dr Leigh Howard Holmes of the English Department at Cameron Unversity Lawton OK explains Follow 2 his theme commentary program in the February 1985 issue of The Computing Teacher It s a program that makes thorough comments on common mistakes on stu dents themes and produces a printout for them The program is on cassette for a 64K Color Computer and Holmes claims it re duces his grading time by at least 20 percent Looking Ahead What s ahead for our children and our selves in the quest for computer literacy As far as educational software is concerned I think it s programs that deal with issues that are important to students and that have real life applications It is programsthat offer students something more than a teacher can provide in the everyday classroom lt is pro grams that have enough flexibility that stu dents will not tire of them or use all the option
158. e preferred Not long ago 64K was the standard memory capacity on home computers Now it is 128K and it doesn t look like it will stay there long There are products that fix these problems and we see these products gaining in importance to CoCo owners Soon the typical full blown CoCo system will include the 128K upgrade a monitor and driver an 80 column card Multi Pak Interface a bit graphics printer and at least one disk drive Many software vendors will adapt their programs to take advantage of this setup What wil the next version of the CoCo be like We don t know the folks at Fort Worth are very secretive about that sort of thing We can guess that it will have at least true upper and lowercase address more memory and make use of the OS 9 operating system OS 9 is important because it can maximize on the extra memory especially if bank switching is involved and can be used as a means to maintain compatibility with older machines should a major change in board design be necessary We will cover OS 9 from a working man s point of view i e we ll concentrate on using its utilities to manipulate files economize on memory and create macros We ll also discuss other avenues that OS 9 opens for you such as using non Basic program ming languages Education will become increasingly important as Tandy continues to push the CoCo to schools and the family We see exciting new developments in educational software in the near future
159. e 10 off list Send for complete list CALL TOLL FREE Circle Reader Service card 18 1 800 343 8124 e LOWEST POSSIBLE PRICES BEST POSSIBLE WARRANTY KNOWLEDGEABLE SALES STAFF P O Box 4094 TIMELY DELIVERY 480 King Street SHOPPING CONVENIENCE Littleton MA 01460 SINCE 1973 ka lt IN MASSACHUSETTS 617 486 3193 185 80 is registered trademark of Tandy Corp HJL 57 Keyboard ES Now available for all models Compare it with the rest Then buy the best if you ve been thinking about spending good money on a new keyboard for your Color Computer why not get a good keyboard for your money Designed from scratch the HJL 57 Professional Keyboard Is bullt to unlock ALL the potential performance of your Color Computer Now youcan do real word processing and sall through lengthy Ilstings with maximum speed minimum errors At 79 95 the HJL 57 Is reason ably priced but you can find other CoCo keyboards for a few dollars less So before you buy we suggest that you compare Compare Design The ergonomically superior HJL 57 has sculptured low profile keycaps and the three color layout Is Identical to the original CoCo keyboard Compare Construction The HJL 57 has a rlgidized aluminum baseplate for solid no flex mounting Switch contacts are rated for 100 million cycles minimum and covered by a splil proof membrane Compare Performance Offering more than full tra
160. e a 20K MC 10 with cas sette and a CGP 220 printer Arne J Gregor 1606 Lincoln Court Reading PA 19605 Tape to Disk Instructions Discovering HOT CoCo was a real pleasure I particularly enjoy the articles and programs that help me to understand computer oper ations better Basic programs present no problem for me but machine language pro grams are difficult especially when they re quire transferring information from tape to disk Articles sometimes tell how to do this but generally appreciate it if all articles did so or if HOT CoCo published some gen eral instructions for this type of transfer Ihave gradually upgraded my system from the original 16K CoCo 2 with a cassette drive to a 64K system with three disk drives and a DMP 110 printer Like many people I had trouble finding an acceptable arrangement for my new equipment that is until I bought a computer table from The Sharper Image 650 Davis St San Francisco CA 94111 Their computer stand 4DGRIO3 149 and two shelf risers DGR104 69 offer ample room for all my equiment including my 9 inch monitor and Multi Pack Interface and still leave room for some of my books I m sure other subscribers with limited space would find this stand useful Ive also purchased the complete VIP li brary of software and many other programs advertised in your magazine I find them all very useful and educational Please keep up your good work Herbert E Crumrine Roch
161. e accustomed to hearing in human speech But the product is a step above the speech imitation attempt of com mercial software and about on par with the Votrax chip used in some other voice synthesziers Speech generation firmware has limita tions however Even with the 59 allophones the Sound Speech Cartridge offers it is diffi cult to generate many words I found that dis covering how best to program a word is very often a matter of tria and error despite the theory that if an allophone table is complete proper combinations of allophones can re produce any word in the English language Before I received this product I anticipated it to be an ideal device for speech handi capped individuals But the need for users to alter spellings of so many words could be too great a shortcoming for that application Whatis lacking is software designed to trans late keyboard entries so the Cartridge can in terpret them in a way that correctly imitates human speech June 1985 HOT CoCo 73 w Reviews The musical sounds that the Sound Speech Cartridge produces do not mimic the sounds of musical instruments butthey can reproduce recognizable melodies The Car tridge creates a purer tone than you can ac complish with Basic s SOUND command But some commercial machine language software produces musical sounds that are as good or better The Sound Speech Cartridge lacks many of the components necessary to create musi cal scores I
162. e more crowded and less easily readable but they are perfect for showing you the exact layout of your printed page all on the screen at one time Compare this with cumbersome windows that show you only fragments at a time and don t even allow editing RIGHT JUSTIFICATION amp HYPHENATION One outstanding advantage of the full width screen display is that you can now set the screen width to match the width of your printed page so that what you see is what you get This makes exact alignment of columns possible and it makes hyphenation simple Since short lines are the reason for the large spaces often found in standard right justified text and since hyphenation is the most effective way to eliminate short lines Telewrifer 64 can now promise you some of the best looking right justification you can get on the Color Computer FEATURES amp SPECIFICATIONS Printing and formatting Drives any printer LPVII VIII DMP 100 200 Epson Okidata Centronics NEC C Smith Corona Terminet etc Embedded control codes give full dynamic access to intelligent printer features like underlining subscript superscript variable font and type size dot graphics etc Dynamic embedded format controls for top bottom and left margins line length lines per page line spacing new page change page numbering conditional new page enable disable justification Menu driven control of these parameters as well as
163. e planning session of a survey You have a better idea of equip ment limitations than your clients do and they know what questions they want an swered Bear in mind thatthe more objective the questions are the easier theanswers will be for you to compile There will be an interval of time between the completion of the final drafts of the ques tionnaire and the point when the responses are ready for compilation that does not in volve you Recommend a specific return date for the survey That means saying August 15 instead of 90 days from the receipt of this form When you have the finished question naires in hand examine the responses for each question to see how well the multiple choice answers worked For example did many people write in their own response such as never heard of it to any of the questions If so you might want to add that response as a category on your spreadsheet Whenever responses indicate possible revi sions to your format check with your clients to be sure you are providing what they want Once you have reviewed the question naires and your format to be sure that they arc consistcnt start typing in the data This is tedious but you ll soon get into a rhythm When you reach the end of the pile start the calculations Use the spreadsheet to sum each column count the number of respon dents figure percentages and totals and put all these figures in the appropriate places at the bottom
164. e than necessary Written for 16K Extended Color Basic Bufftext runs on 32K and 64K as well and can be modified to run on nonextended ma chines If you have more than 16K change the value of ER in line 30 to amp H7FFF Type in the program andsave it totape as Bufftext Then disable the ROM pack auto start on Videotex by holding the ROM pack with the sliding door facing you and the edge connector pointed toward the ceiling Slide the door down toreveal 14 metal strips The first stripontheleft is the cartridge interrupt line Place a piece of masking tape over this connection only With your CoCo s power off plug in the modified ROM pack When you turn on the power you should see the normal sign on for Basic If you don t go back and check to make sure the tape is in the correct place and holding Caution Never insert or remove a ROM pack with the CoCo turned on Next type EXEC 49152 and press the en ter key followed by the break key You will be greeted with Videotex s Place Call prompt Follow normal procedure for Video tex and the services you call Bufftext writes over some of RAM during loading When you end your call and save the buffer you reini tialize and Basic writes over certain sections System Requirements 16K RAM Extended Color Basic Videotex 78 HOT CoCo June 1985 of memory So it is a good idea to download important information more than once giv ing yourself several copies stacked in memory With m
165. eking out a summer camp for their children The 1985 Par ent s Guide to Accredited Camps has up to date informa tion on more than 2 200 camps including many computer camps You can order it by send ing a check or money order call ing the toll free order line or picking it up at the ACA office in your area Parent s Guide to Ac credited Camps sells for 8 95 Creative Technical Consult ants offers a host of educational computer programs that teach students of all ages everything from the alphabet to string vari ables The company also sells programs that help teachers de sign activities fortheir students Word Search Puzzles for ex ample is a utility program that creates word search puzzles on a printer The program hides up to 40 words in an array with other random letters through which students sort It also prints out an answer key to p index to Advertisers wam M Reader Service No Page No Reader Service No Page Reader Service No Page No 335 21 25 FourStarSoftware 65 222 ProfessorJones 26 I2 sCognitec eas 17 455 Hard Drive Specialists 53 51 PXEComputing 7 Colorware 93 94 95 440 HJL Products CIV 4 Radio Shack 11 The Computer 8 Products 210202052 ARENIS 1 11 86 87 Center Sw 68 55 Real Time Specialists 32 18 ComputerPlus 43 Corporate Ad
166. ely new joystick input to your com puter a precision one with a 49 152 point resolution to match the CoCo screen exactly Plug your same joystick mouse or touch You may then use CoCo Max s graphic magic on it The DS 69 is available as an option from Colorware from 149 95 complete with its own software on disk or tape Using the DS 69 with a disk re quires an RS multi pak adaptor COCO MAX REQUIREMENTS The CoCo Max System includes the Hi Res Input Unit sottware on disk or cassette please specify and user manual It will work on any 64K Extended or non AN ABSOLUTE GUARANTEE is harclware sottware svstem that sofhware onlv svstem can match Get CoCo see vour CoCo periorm as it never could belore I vou don t agree that CoCo is the ultimate creative tool tor the Color Com puter simply return it within 20 davs tor a tull courteous retund trom Colorware THE HARDWARE This is the kev to CoCo Max s unmatch ed pertormance Did vou know the nor mal jovstick input built into the Color Computer only allows access to 4 096 64 64 points on the CoCo screen Yet the Color Computer s high resolution screen ye emt has 49 152 256 x 192 pixels This means that a jovstick mouse or even a touch pad can at best only access about one tenth ol the pixels on the CoCo screen Most graphic programs ignore this hard ware
167. em is the first step Save Time with Our AC 4 Acoustic Coupler Our AC 4 Acoustic Coupler 26 1179 119 95 is perfect for travellers Just dial the telephone number you want place the phone handset into the AC 4 and you re ready to go It s perfect for use in a hotel room client s of fice or wherever direct connec tion to a telephone wall jack is impractical The AC 4 operates at 300 baud with full and half duplex capability and originate and an swer modes Save on a Sale Priced Modem II Through May Our Direct Connect Modem II is a programmable auto answer auto dial modem and it s on MAKES GETTING ON LINE EASY a fits your needs and never be out sale in May for just 119 95 26 1173 Reg 199 95 Our Basic 300 Baud Modem is Under 60 Our DCM 3 Direct Connect Modem 26 1178 59 95 makes data transfer especially affordable for the home computer user It plugs into a modular jack for full duplex capability Our High Speed Modem Is Value Packed Finally a full featured 1200 baud modem that s value priced Move up to 1200 baud transmis sions and save money on long 0 Suo ww x ws s distance phone bills and informa tion service connect time every time you use the DC 2212 The DC 2212 26 1176 399 95 dials and answers the telephone receives and trans mits information and hangs up when the call is completed The DC 2212 is a direc
168. emory whole This is useful for projects with thousands of questionnaire responses You might want to consider the advantage of using OS 9 if you have a disk system OS 9 gives you a larger selection of software with many helpful features including the ability to print columns acrossseveral pages which lets you tape sheets together for wide spread sheets Another desirable feature is access to printer codes You might want to enable compressed printer fonts or special control features It s also handy to be able to alter paper margins and vary the spreadsheet s column width for printing Look for the following spreadsheet fea tures the ability to insert and delete extra columns and rows within a working format count the number of cells in a column or row that contains data and find a minimum or maximum amount in a range of cells Other features to consider include percentage cal culation often possible by combining other commands summing and averaging and graphing capabilities particularly those that work with a printer Of prime importance for this application is a large number of columns and rows or the ability to refer to other spreadsheets for data but these are hard to find You will probably be using several spreadsheets for one analysis with a summary spreadsheet that takes all the subtotals and gives the final statistics Setting Up a Project Begin a project by meeting with your clients Try to be in on th
169. ems to keep up with the com puter at this speed You can use a joystick or the keyboard to design your character set If you select K use the arrow keys to move the cursor The menu offers you a variety of options lt S gt et turns on the dot position shown by the cursor It lets you design your char acters at the screen cR eset tumsoffa dot that is on lt U gt pdate stores the codes necessary to reproduce a character Use update after you set the last dot in a character or if you wish to replace a character C Isclears the screen Line 4 Description 10 90 Setup 100 130 Compute cursor position if us ing keyboard 140 210 Option vectors 220 Test print character set 230 270 Program printer RAM 280 300 Update character 310 Direct keyboard entry of binary codes 320 370 Read screen and build binary codes 380 Display code hex value 390 440 View character stored in CoCo memory 450 470 Input ascenders descenders character compute storage lo cation 480 490 Read Write data ile 500 510 Get file name 520 540 Draw display 550 Baud rate POKE values 960 PCLEAR Table 1 Program Description lt D gt irect allows direct entry of the bi nary code to define a character lt Q gt uit stops the program lt V gt iew allows you to review previously updated characters Here you can edit and save by updating the character By viewing an E and deleting a few dots you can make a n
170. end paints ond boundanes for lines boxes circles elipses and painting Point to point drawstrings moy be piotted on the screen and then rotated enlarged or shrunk moved orinverted Patterns may be programmed in easily ta creat dazzling illusions using lines boxes elipses and drawstrings Sketchpad supports PMODES and color sets and gives faise colors in Pmodes 1 and 4 Text and graphics can be combined on high resolution SCreens All pictures and drawstrings con be saved tO disk for future use 32K 2 joysticks requred Disk 2995 TESTMAKER Menu driven series that creates mult choice amp I F tesis Output to screen c printer 32K Disk 2995 Moycode 6809 Disassembler Maycode will read machine code from memory and convert it to standard 6809 Assembly Language Mnemonics Output can be sent to screen printer cassette or diskette The output to cassette or diskette may be reloaded EDIASM for modification or re ossembdly 16K min Tape 524 95 Disk 2995 TDIR IDIR is menu dnven user fnendly tape directory program When installed and maintained on your cassette tapes it allows complete directory control of your tapes This means you will nolonger need to go through o complete tooe to discover thot the program you wanted is n another tape TDIR also eliminates the drudgery of trying to remember tape Position settings Program names All this and more is controlled by IDIR 16K tope 24 9
171. entation TV Buff Ilc s instructions guide you though the installation procedure step by step Because you must choose between monochrome or color installation the in structions provide you with guidance on each choice TV Buff Ilc comes with seven pages of in structions Three pages cover installation two provide troubleshooting tips and one has additional notes that discuss specifica tions adding sound and using surplus mon itors A separate page has a component layout and schematic diagram of TV These instructions are excellent They are easy to understand because they are not filled with technica jargon One shortcoming of the documentation is that it glosses over the instruction for install ing sound The sound section needs to be ex panded to clarify for example how you use thecassette output to get sound Connect the plug that normally goes to the auxiliary port of the cassette to the audio input of the mon itor not the cassette Customer support is an important part of any purchase Green Mountain Micro gets high marks in this area had a question about the installation When I called the com pany I got the answer I needed from the first person I talked to without a run around or a hassle Ease of Use Most TV Buff owners will find that using the adapter once they have installed it is as easy as turning on their CoCos If you have both a color and a monochrome monitor and want to switch ba
172. eo screen will look as it normally looks though a little massag ing of the video RAM page select register was required to get it In RAM bank 1 the start of video RAM VIDRAM is 400 This is page 2 bit pattern 0000010 in the video page select register locations FFC6 through FFD3 See the back of the Getting Started with Color Basic manual for further information on this register In RAM bank 2 Basic treats VIDRAM no differently memory 0 to 7FFF are the RAM addresses in both banks and 400 is VI DRAM However the physical realities are different In RAM bank 2 the video RAM is located in page 66 bit pattern 1000010 in the video page select register If you leave VIDRAM at page 2 or 400 you will not have a video display in RAM bank 2 By properly setting the video page select register VIDRAM is changed to 8400 or page 66 and RAM bank 2 has video Of course when you want to change back to RAM bank 1 VIDRAM must be reset to 400 or page 2 Machine language subroutine 2 properly sets VIDRAM to 8400 before leaving RAM bank 2 active It also stores a 39 RTS at memory location 0167 disabling a ROM subroutine that resets VIDRAM to page 2 before every PRINT operation This is why you see a proper video display after you run Listing 1 Machine language subroutines 3 and 4 in Listing 1 allow transfer from one RAM bank to the other Subroutine 3 address 32353 transfers from bank 1 into bank 2 Just type EXEC 32353 and you
173. er Locate resistor R2 a V watt O 1 ohm series cur rent limiter color coded brown black silver and gold The right side of R2 is a good place to pick off power for your pilot light C5 is cut out on my CoCo 2 and its right terminal on top of the board is connected to 5 volts you could solder to this C5 s left terminal is ground The mostlikely suspects of your hangup problem are memory and the SAM chip Try running a memory test program Several diag nostics routines including a memory test are provided on Radio Shack s Diagnostic ROM program pack catalog no 26 3019 which sells for 10 95 What type board is in my CoCo 2 How do I get a technical areference manual for it Can Interface an RGB color board to the CoCo 2 for better resolution Can you inform me about software suppliers in Europe P T J G Lammers Hetthuysen Netherlands The CoCo 2 has appeared in three flavors the original made sin U S A and two Korean built versions Both the original and the first Korean made versions are similar and you can upgrade them to 64K using eight 4164 dynamic RAM chips The latest Ko rean version uses only two memory chips instead of eight You could upgrade it using some kind of piggyback board containing 4164s Radio Shack has not yet made this piggyback but is replacing the board with the eight chip version for the upgrade Ed note See 64K Modification Revisited elsewhere in this issue for more CoCo 18 HOT CoCo J
174. er key A good strategy is to plan out your moves in advance in order to score the highest number with each turn The higher your total score the better your chances of winning the con test Eds note To enter Puzzle Contest II type or print your name address highest score and itsanswerstringon a piece of paper Mail it to Richard Ramella 1493 Mt View Ave Chico CA 95926 Be sure to write your score on the outside of the envelope To be considered en tries must be postmarked by June 30 1985 The winner wil be the entrant who submits the answer string with the highest score In case of a tie the winner will be determined in a fair and random manner The winner will receive a free one year subscription to HOT CoCo and the winner s name and score will appear future issue See program listing on page 47 System Requirements 16K RAM Extended Color Basic m High Resolution 256 by 256 spatial resolution COCO Your computer Powerful C SEE software DS 69 may be saved on i Give your COCO the gift of sight The Micro Works is happy to introduce the newest member of our Digisector family the DS 69 Video Digitizer for your COCO It has all the standard features of its big brothers but comes with a price tag that s right for you DS 69 m Precision 64 levels of grey scale m SPEED second for a full screen of video m Compactness Self contained in a plug in Rompack m Ease of Use Software on
175. ers The up arrow indicates exponentiation on the Color Computer Unfortunately most printers do not havean up arrow Our printer prints a caret instead Be sure to type an up arrow in place of all carets in Basic pro gram listings Assembly Language Listings HOT CoCo often publishes programs writ ten in Assembly language rather than Basic Assembly listings talk to your computer a much more direct level Basic requires some translation before your CoCo can exe cute it Therefore Assembly works much faster than Basic Unfortunately it is more difficult to learn Assembly language pro gramming than Basic programming But you do not need to know how to pro gram in Assembly to use these programs You do need however something called an editor assembler An editor assembler al lowsyou to manually enteran Assembly list ing and then it assembles it into a form that your CoCo can execute Since editor as semblers can cost as much as 80 you prob ably don t need one unless you want to learn Assembly language programming It is possible to hand assemble an Assem bly listing but this is a tedious process that isbestleftto someone witha little experience with Assembly programming It also requires a short Basic routine that prepares your CoCo for hand assembly We convert some Assembly programs to Basic DATA statements and include a short Basic routine to load and execute the DATA statements This gives you a progr
176. es so better than any other database program for the Color Computer featuring machine code lowercase screens and mail merge capabilities Inventory accounts mailing lists family histories you name it VIP Database will keep track of all your data and it will merge VIP Writer files The VIP Database features selectable lowercase displays for maximum utility It will handle as many records as fit on your disks It is structured in a simple and easy to understand menu system with full prompting for easy operation Your data is stored in records ot your own design All files are fully indexed for speed and efficiency Full sort of records is provided for easy listing of names figures addresses etc in ascending or descending alphabetic or numerical order Records can be searched for specific entries using multiple search criteria With database form merge you may also combine files sort and print mailing lists print boiler plate documents address envelopes the list is endless The math package even per forms arithmetic operations and updates other fields Unlimited print format and report generation with the ability to imbed control codes for use with all printers Radio Shack Catalog No 90 0140 32K DISK 59 95 64K Required for math package amp mail merge VIP Calc MORE USABLE FEATURES FEB 1985 RAINBOW VIP Calc is truly the finest and easily the most powerful electronic worksheet and financial modelin
177. est of Software Reviews Education We are seeing a continuing decrease in number of reviews of the type of drill and practice programs frequently thought of as tradi tional CAI The most frequently reviewed programs in the 1984 edition arethose that encourage students to use computers as tools are new simulations and are programs that will help students develop better prob lem solving and logical thinking skills Simulation Software Simulation software can be simple or com plex but it requires the student to become involved It teaches strategies problem sol ving team work critical thinking and logic by setting up a problem situation that must be solved The Factory from Sunburst is a relatively simple simulation program that challenges you to make a variety of products using three different machines to modify a block of wood You can choose to play against the computer to try to match the steps necessary to attain the computer s fin ished product or you can play against an other person Much more complex simulations are avail able for a variety of computers Think how much safer it is to mix chemicals in a trial and error method on a computer screen than in an actual laboratory In a computer simu lation results of certain actions can be shown to students that s much more effec tive than telling them A college junior accounting major recently commented to me Learning to use a com puter filing system and
178. ester NY Better Track Record Dennis Elfert s disk saving program HOT CoCo March 1984 p 54 is excellent Keith Langill modified the program to work on two disks HOT CoCo July 1984 p 8 For a sim pler modification reverse the position of the directory disk and object disks Then delete lines 135 and 140 and change the following line to read 53 INPUT PUT YOUR D D IN DRIVE 0 AND YOUR DISK IN DRIVE 19 120 DSKI 1 17 X D Y E Y 365 DSKO 1 17 X DS Y ES Y Robert W Freedman Pittsburgh PA Use Auto Page With ROM Packs Your article Don t Print There HOT CoCo March 1985 p 48 was the answer to my prayers I have been using the Color File ROM pack to keep track of my inventory and print the entire file It used to be very frustrat ing when the printer printed over the perfora tion Now thanks to you all is well Readers might be interested in my fix to get the program to work with a ROM pack First holding the pack in front of you with the label facing away and the arrow up dis able the auto start by placing a small piece of tape over the auto start pin the first one from the left When the pack is in the com puter the screen shows the normal introduc tory logo as if there were no ROM pack in the slot To start the pack type EXEC 49152 To revert to Basic press the reset button You can go back and forth as often as you like To use Auto Page with the ROM pack in sert
179. etc Algebra 16 Spelling 16 For more information or to order call Government 16 TOLL FREE 1 800 654 3871 16 Programs in each of the following IN OKLAHOMA CALL 405 288 2301 Children s Tales Carpentry Electronics Health Services Office Skills Statistics First Aid Safety Economics Business Accounting DO RSET Psychology AND MANY MORE Educational Systems Inc Dealer Inquiries Welcome Box 1226 Norman OK 73070 Circle Reader Service card 209 Radio Shack Has Want for Your EG ES EE Save Time and Effort at Home Color File An easy to use home filing sys tem to alphabet ize select examine revise and store household re cords Comes pre set with seven files or create your own 826 3103 2495 Spectaculator Do home planning and budgeting with this elec tronic spread sheet Just en ter numbers and formulas re sults are displayed on command Ideal for home financial forecasting 26 3104 3495 Color SCRIPSIT A powerful home word pro cessing system for correction free letters Text be saved on EU optional cassette recorder or printed with optional printer 26 3105 3495 Personal Finance II Includes 26 expense catego ries including auto gas food and more Re view spending on year to date or category basis 26 3106 3495 COLORSTAT Use LAC Color Computer to turn compli cated home or business data into stat
180. everyone Tell them I saw it in HOT CoCo Thanks systems 29 95 05 9 is a trademark of MICROWARE and MOTOROLA INC OS 9 SOFTWARE SDISK Standard disk driver module Allows the use of 40 or 80 trk single double sided drives with coco OS 9 plus you gain the ability to read write format the standard OS 9 disk formats used on other OS 9 SDISK BOOTFIX To create BOOTABLE double sided disks 35 95 Filter Kit 1 Perform wild card directory lists copies etc 29 95 Filter Kit 2 Macgen and 9 other programs 29 95 Hacker s Kit 1 Disassembler and memory dump load utilities 24 95 Terms Prepaid by check MO VISA Mastercard or COD Add 1 S amp H COD add 3 Send SASE for current catalog D P Johnson 7655 SW Cedarcrest St Portland OR 97223 503 244 8152 we appreciate your calling only 9 11 am PST June 1985 HOT CoCo 83 he Learning Page by Nancy Kipperman Meeting the Computer Challenge E are still struggling with the rightful place of the personal computer in theschools Computer literacy is a term that seems to have many degrees of definition Are you computer literate if you recog nize the place of computers in today s soci ety or if you can turn one on and know where to put the software and how to make it work Are typing skills a prerequisite Or must you be able to speak a computer lan guage and write a program Do you need to know Assembl
181. ew character and update it as F without losing the E lt P gt rogram programs the Gemini with the current character set lt L gt oad reads a character from disk tape lt W gt rite saves the current set to disk tape lt T gt est prints the current set Type P before using this option Let s assume you have already entered and saved part of a character set and now wish to complete it Select the load option from the menu At the prompt enter the name ofthe file containing the character set An array filled with dots indicating that all the pins are off appears The cursor marks the first dot position At this point you can view the characters already completed for possible editing or continue to define new characters To define new characters move the cursor to the dot position you want to set Press S and a black square appears in that position and a hex digit is entered at the bottom of the column If you make a mistake or wish to reset a dot move the cursor to the correct place and press the R key A dot off replaces the black square and the hex value is updated When you finish press the U key The pro gram asks you if you have descenders Type Y for yes or N for no Finally to identify the character you have defined enter the value of an ASCII character in hex e g amp H5F for the backspace arrow or type the character after the prompt Certain characters must be defined in hex otherwise
182. few very appealing features and one or two com plexities Elite File can deal with files up to 4 000 records in size although the product of record length and number must always be less than the capacity of a formatted disk roughly 156K The program is also able to handle as many as 16 files at once so you can command it to look through a lot of data when you re hunting for something Nice features include the ability to copy a file definition ie the names and lengths of the various fields from one file to another I can use that The easy way to set a year s manuscript file is to copy the definition used for the previous year and start filling in the data There a couple of ways to search for a rec ord buried somewhere in a file You can look for a target string imbedded in any field or you can specify that the first field of a record be an exact match to your specification This is usually the faster way to go Unfortu nately there is no quick and dirty way to get a complete printout of a single record when you find it In fact report generation is handled differ ently from the way it is done under PCF or Flexi Filer Elite File does not have a built in facility forsetting up and storing multiple re port formats You must use either its stable mate word processor Elite Word another text processor or a Basic program to build a command file containing the special in structions needed to specify a report s ap pear
183. for each character have written a Basic program to lay out the dot patterns save them on disk or tape and program the printer when you areready to use them 66 HOT CoCo June 1985 Encoding Dot Patterns To understand how the program works it helps to know how dot patterns are encoded for the Gemini The print head consists of a vertical array of nine pins or wires used to make impressions on the print surface You must program each pin to be on or off Since all nine pins work at the same time the printer needs to knowthe entire9 pinconfig uration before you activate them Illustration by Leonora A Sullivan The programmable character mode uses only seven of these pins to strike an impres sion the top seven or the bottom seven The bottom seven form the lower part of charac ters with descenders such as p or g Other letters ascenders use the top seven pins The character grid is seven rows high by nine columns wide Each dot of the on off pattern is represented as a binary digit and the entireconfiguration is encoded as a 7 bit number The value of each row of dots from top to bottom is 1 2 4 8 16 32 and 64 To define all of the dots for a particular charac ter the program assigns a hexadecimal col umn value equal to the sum of dot values in that column Figure 1 shows a sample dot pattern for the letter A Note that some dots are left out in row 4 The Gemini does not allow adjacent columns of a
184. g 1 are solvable To play type RUN and press the enter key You slide numbers into the blank space by pressing A for north Z for south comma for west and period for east Because you can only move into the blank space with one of four numbers you use the direction key to choose the num ber or tile you want to move Randomly generated tones sound when you have prop erly reordered the numbers The Bull s Eye Listing 2 is called Bull s Eye and goes di rectly to the heart of the mathematical im plications of this kind of game Its object to correctly rearrange the picture of the bull s eye is evident at once but its solution is eva sive Start the puzzle by typing RUN and press ing the enter key If your computer does not accept the speed POKE 65495 0 delete the command from line 110 The program pre sents a three by four square arrangement on a field of white with only one empty square On the left is a large orange circle In its cen ter is a blue square On the right is a square containing a small orange box The object is to insert this last square inside the large cir cle to form the bull s eye Press Afor north Z for south comma for west and period for east As with the Fifteen Puzzle the compass direction you select also indicates the square you have chosen to move into the empty box Bull s Eyecan be solved in 23 moves Look for the answer in next month s column Ran domly generated tones which stop
185. g at 95 BEST PRICE 79 MONOCHROME COLOR MONITORS Warranty One Full Year i 5 to 20 Megabyte ready to run on the TRS VIDEO DRIVER ENABLES YOUR COCO TO OPERATE WITH 80 Model I III IV AP color computer VIDEO MONITOR INSTEAD OF A TELEVISION 57006 SCREEN DUMP PROGRAM 64K UPGRADES 3 The best screen dump program for the Epson amp Gemini printers ever Have the option of standard images or reverse w regular or double sized pictures 4995 PRINTER AND SP 3 INTERFACE for Color Computer Site INTERFACES AVAILABLE a 300 1920 BAUD rates m External to printer No AC Plugs PRINTERS m Built in modem printer switch no need for 100 SU 160 CPS Super Script Subscnpt Y cables or plugging unplugging cables Bidirectional Logic Seeking Underlining plugging plugging Friction and Tractor Backspacing Doublestrike 9X9 Dot Matrix 5 6 8 1 2 10 12 and 17 Pitch 0 True Decenders Programmabie Line Spacing n V High Res Brt Image Bloch Graphics SIX 6 MONTH WARRANTY GEMINI 10X 9 Inch Carriage 120cps Friction and Tractor CALL GEMINI 15X 15 Inch Carriage 120cps Friction and Tractor CALL DELTA 10 10 Inch Carriage 160cps Friction and Tractor CALL POWER better quality COMPLETE SYSTEM N ONLY SN 31995 S Nothing more to buy Dealer inquiries invited TRUE DATA PRODUCTS fC 195 Linwood Street P O Box 546 CALL US TODAY 617 234 7047 LA E DEL ORDER TOLL FREE 1 8
186. g program available for the Color Computer Now every Color Computer owner has access to a calculating and planning tool better than VisiCalc containing all its features and commands and then some WITH USABLE DISPLAYS There s nothing left out of VIP Calc Every feature you ve come to rely on with VisiCalc is there and then some You get up to 5 TIMES the screen display area of other spreadsheets for the Color Computer and Memory Sense with BANK SWITCHING to give not just 24 or 30 but UP TO 33K of WORKSPACE IN 64K This display and memory allow you the FULL SIZE USABLE WORKSHEETS you require You also get User definable worksheet size up to 512 columns by 1024 rows Up to SIXTEEN VIDEO DISPLAY WINDOWS to compare and contrast results of changes 16 DIGIT PRECISION Sine Cosine and other trigonometric functions Averaging Exponents Algebraic functions Column and Row Ascending and Descending SORTS for comparison of results LOCATE FORMULAS OR TITLES IN CELLS Easy entry replication and block moving of frames Global or Local column width control up to 78 characters per cell Create titles of up to 255 characters per Cell Limitless programmable functions Typamatic Key Repeat Key Typehead Print up to 255 column worksheet Prints at any baud rate from 110 to 9600 Print formats savable along with worksheet Enter PRINTER CONTROL CODES for customized printing with letter quality or dot matrix printer Combi
187. ggled command for each printer model the program supports For example my Epson FX 80 can print 48 lines in a single burst in standard font and 96 lines in the compressed mode The C Itoh Prowriter is the champ when it comes to packing in the data It can stuff up to 108 compressed lines into a space 8 inches high If your file contains more data you must enter additional start line and end line commands before printing each group of lines Once Side Wise has your printing under text demonztrites the ability Side Wize to print ava amp zCII file sideways 1 was red with the 1 0 Telewriter gt er PONI re note of caution dc ret use embedded control mharacters thes wiil sot be properly interpeetted by Sade Hise Fig 1 The Side Wise Character Set on the Epson FX 80 way there is little to do but sit back watch the show and ponder the merits of the util ity One question that comes to mind is print quality What do you give up by going side ways with Side Wise The answer is speed and density Side Wise prints in only one di rection so you cannot get the equivalent of emphasized printing In all probability the character set for your printer will not be the same as the one defined by your printer s ROM The character set that Side Wise and my Epson produce is very pleasing however See Fig 1 It is not likely that there are le gibility problems with any of the printers that are co
188. good understanding of machine lan guage The sections dealing with sound and music are probably the most inaccessible There is little information that uses musical notation so having a music background won t help To make the Sound Speech Cartridge pro duce sound effects or music you enter a command that loads one or more buffers and follows by data groups of 3 or 4 postbytes Each data group defines a tone noise or en velope The manual has postbyte tables for each sound quality They chart definitions for the bytes belonging to each postbyte of the various sound qualities None of these terms are defined however Nor are there step by step explanations to help novices get Circle Reader Service card 4214 You re in good company These are some of our other valued customers started The manual presumes that you al ready have a good understanding of the terms it uses Nontechnical users will probably have the most success with the demonstration pro grams One of them for example allows the CoCo to emulate an organ that can play 16 notes beginning with the A above middle C Another speaks whatever you type into the computer but it has a limited usefulness Some ofits wordsare fairly distinct but others are unintelligible To overcome this you have to misspell many words which could encour age poor spelling especially among children Ease of Use Some of the Sound Speech Cartridge dem onstration programs that
189. gramming experience contains Integrated BettorTM 299 95 complete Im GD Gold Dog Analysis M Theonty professional dog handicapper on the market includes 1 Speed 6 Condition 2 Pos Today 7 Running Style 3 Kennel 8 Weight 4 Pos Last 9 All new internal weighting 5 Distance 10 NEW class indicator you are near a greyhound track you afford 10 use Ins progiam 149 95 complete with integrated Master BettorTM 199 95 Limited DogTM 299 95 Master Harness HandicapperTM Protessional sotlware designed to provide a thorough analysis ol all trotter and pacer races in North America and Canada Features Class Posi Positions Time Finish Driver Track Conditions Days Since Last Tiamer Track Rang Gender Time Va Temp Allowance 159 95 complete whntegrated Master BeitorTM 199 95 PPX Professor Jones Football Predictor Prof PixT M Complete Football Analysis with Data Base 1 Overlays Over Under bets 2 Point Spreads S Data Base Stats 3 Super Plays 6 Holds 100 teams Highest percentage of winners 1983 Time Last Quarter 39 95 complete 99 95 with Daia Base Management NBA Basketball TM This database managedanalysis will provide Ihe user with ALL betting while sloring relevant intormation on disk 599 95 comprete w Manvat 5129 95 NBA College version LOT LOTTERY ANAL YSISTM comparisori program designed to detec subtle patterns
190. hat unlocks the full potential of TRS 80 and MC 10 Color Computers HOT CoCo s inside stories can make you I want to be part of a YES brilliant team Send me 12 issues of HOT CoCo for the low price of 24 97 I ll save 30 off the news stand price Li Payment enclosed Bill me Name T p Address City State S LEER Canada amp Mexico 27 97 one year only US funds drawn on US bank Foreign surface 44 97 one vear onlv US funds drawn on US bank Foreign airmail please inquire Allow 6 to 8 weeks for delivery HOT CoCo PO Box 975 Farmingdale NY 11737 356B4T Brilliant your Color Computer a brilliant team By sub scribing to HOT CoCo for the low one year price of 24 97 you ll get information packed issues at 30 off the cover price HOT CoCo specializes in presenting time effi cient money saving programs for business home and school Easy to use and practical Novice and expert users alike will benefit from HOT CoCo s tips and tutorials Sharpen your skill Watch your CoCo become more versatile Graphics Discover how easy it is to create your own Games HOT CoCo s wide assortment pro vides hours of entertainment and challenge for the entire family Looking to gain an advantage by adding more hardware or software Read our reviews first decide for yourself what s worth its weight in gold and what isn t worth a hill of beans Everything on the pages of H
191. he carets and other commands Side Wise does not recognize left margin set tings The simplest way to have your print out start 10 spaces from a page break is to advance the paper 10 lines past the print head manually before you begin I gleaned these last few points while using Side Wise in several successful practice ses RGS Dual DOS Card by Gary W Clemens construction quality documentation setup performance easeofuse D n O OVERALL RATING 4 50 Hordwore Circle Reader Service card 299 SPECTRAL ASSOCIATES he Dual DOS Card from RGS Micro Inc letsyouaccess two ROMs or a ROM and an EPROM without opening your disk con troller to switch ICs integrated circuits The product was designed to plug into the ROM socket of J amp M s JDOS Disk Controller it won t fit in the Radio Shack controller and has two additional sockets and an external switch It comes in two configurations You can get two 24 pin sockets for two ROMs two 28 pin sockets that can hold a 24 pin sions Don t let them deter you Side Wise works well and is easy to use It is also a unique program in the Color Computer world Side Wise is manufactured by Derringer Software Inc P O Box 5300 Florence SC 29502 2300 803 665 5676 It requires a disk drive and sells for 19 95 ROM and a 24 or 28 pin ROM or EPROM This gives you the option of having DECB Disk Extended Color Basic and JDOS or
192. he potential we have the products you have the power COCO PAINT 64K and at least one disk drive required D Supports Keyboard Single Joystick Mouse Koala Pad and Graphics Tablet Allows the user to combine Hi Res Graphics and various text fonts Create you own text or modify supplied text styles to fit your needs Create Stamps rotate mirror shrink expand or invert Screen dump to most common printers D Option to save screens in standard binary format which allows integration into your own programs Communications capabilities 300 or 1200 baud Make use of numerous built in textures to create special graphics effects Utility included to design your own textures Full documentation and handy reference card included Very easy to use DISK ONLY 39 95 U S OR 49 95 CDN NPV In addition the IRR yardstick is easier to understand The one drawback is the diffi n 5 Cheque or Money Order P O BOX 730 culty of calculating it however with this pro Add 2 50 shipping STREETSVILLE ONTARIO Software submissions wanted gram that disadvantage is eliminated because lt eun CANADA Dealer enquiries welcome the computer performs the computations us Ont Besidents add L5M 2C2 Overseas orders add 10 ing the figures you entered for NPV eee ee eee oum lt
193. heets SEAL e Sort full or partial worksheet by columns or rows e Line Hi Lo Close Circle Graphs Full Graphics captioning and overlay facility 069 Graphics Drivers for all popular Printers sion T Joystick Mouse Driver for Cursor Movement VOD Wena Works with any ROM versions even JDOS Na 440 5 sane 96 32 Up to 256 Columns or 256 Rows Can use VisiCalc worksheets amp training materials On screen Help Messages FOR 64K DISK SYSTEMS average P d nM dca md available from y now with COMPUTER SYSTEMS CENTER e 33k Available Worksheet Space 42 Four Seasons Center 122 Ew 4 GRAPHICS jw 10 to 6 Mon Fri your local DYNACALC dealer dtu Price US 99 95 P Outside North America add 10 postage Feb har Aer las CANADA CDN 129 95 DATAMAN INTERNATIONAL 420 FERGUSON AVE N HAMILTON ONT L8L 4Y9 416 529 1319 AUSTRALIA PARIS RADIO 161 BUNNERONG RD KINGSFORD 2032 NSW 612 344 9111 DYNACALC Reg U S Pat Off Lotus and 1 2 3 are trademarks of Lotus Development Corp PRO COLOR FILE is a trademark of Derringer Software Telewriter 64 is a trademark of Cognitec VisiCalc is a trademark of VisiCorp BUSINESS by Dev Chakravarty Investment Analysis Profit from your CoCo s investment advice LIII DEEP EEA Ulustration by Richard Cowdrey We evaluating an
194. hic Editing Font Styles and all kinds of handy tools and shortcuts Plug your joystick mouse or touch pad into CoCo Max s Hi Res Input Unit Then use a delightfully simple Point and Click method to get any of CoCo Max s power graphic tools It has them all CoCo Max screen is actually only a win dow on an even larger image Use Ihe Point and Click Hand to ettortlessly move your window over any portion o the larger image You have a working area of up to 3 2 times the area ot the window itself FLEXIBLE PRINTING CoCo Max gives you many ways 10 print Fill a whole page with your image or condense two full CoCo screens to less than page for a finely detailed copy Dump your CoCo Max screen full size or shrink it to page size FREEDOM TO CREATE Anyone who wants to create anything at all on their CoCo screen or printer will certainly be very glad to meet CoCo Max CoCo Max s Iriendly yet sophisticated graphic and text capabilities let you almost instantly pro duce illustrations diagrams charts TES T Elanas Z HS SSK 06 NS graphs and computer art tor serious use or Just lor creative tun by using software schemes such as sliding windows Although clever these schemes yield sluggish and awkward results Only CoCo Max does it the right way The CoCo Max Hi Res Input Unit plugs into your ROM slot and adds an entir
195. hile other talking head simulations use a minimal cartoon like face TALKHEAD uses high resolution full screen digitized images of an actual person s face to create a life like animated effect COLORWARE INC COLORWARE nv 11421 718 647 2864 Real Talker is a full featured electronic voice syn thesizer unit built into a compact cartridge case You simply plug it into the side of your computer he A 4 Real Talker is compatible with any 16K 32K 64K Extended non extended Color Computer It works with any cassette or disk system and comes complete and ready to talk through your T V or monitor speaker Price includes the Real Talker elec tronic voice synthesizer in a ROM pack software on cassette may be transferred to disk and user manual 1 DR TALK This interactive Eliza type psychoanalyst program will iscuss your innermost problems at length 2 TALKING BATTLESHIP I s you vs the computer in this speaking version of the classic game INSTRUCTIONS REAL TALKI MARIWAR SVN Tiersen RT z 3 TALKING BLACKJACK Play for big stakes against a rather talkative casino dealer ONLY 5995 REAL TALKER 1 for the original Color Computer 59 95 REAL TALKER 2 for the Color Computer 2 64 95 Y BRANCHING CABLE For disk systems If you have a disk system but do not have a Radio Shack Multi
196. ible that the CoCo s circuitry can be fooled at some critical point There are some simple ways of debouncing a switch through circuitry but these methods are not incorporated in the current generation of 128K expanders The ME 128 64 was designed and tested for use with two copies of Cognitec s Telewriter 64 working on two different text files 1 have switched banks from this configuration dozens of times with out encountering a problem Although this isa useful setup for me it is specialized and not for everyone There are also some restric tions to the way you can switch memory banks Dynamic has not tested the compatibility of the ME 128 64 with many other com mercial programs A fair amount of trial and error is necessary to see if two applications routines will run side by side Because the Color Computer has only one video display gener ator chip and only one SAM to drive it it does not let you pass control successfully from one bank to another unless both pro grams are in the same display mode In other words you cannot switch from a 32 column by 16 row text screen to high resolution graphics If you try to do so the screen displays a meaningless pattern and both programs are apt to hang up It is usually safe to make a switch if both the active program and the one on standby June 1985 HOT CoCo 31 Circle Reader Service card 55 UU GoGo Tuner l An easy to use tuning instrument of unbelievable precision SOUND
197. ic reserves that amount of memory MS NAMEFILE 24 95 COLOR FINANCE 4 69 95 for graphics If you do not plan to use graphics and want to free mem Call for prices and availability of your favorite software and hardware All advertised a large Paste program type FOKE Zea NEM opa tape system items subject to availability Prices do not include shipping and handling All of the above or POKE 25 1 4 POKE amp HE00 0 NEW for a disk system units are covered by our 120 day carry in warranty If you have thelatest CoCo version catalog no 26 3134A you need TRS 80 Trademark Tandy Corporation Prices subject to change without notice a different 16K ROM to replace the 8K Color Basic 1 3 See sidebar Write tor our FREE newsletter Circle Reader Service card 4397 Enabling 64K DELKER ELECTRONICS INC Program Listing 2 64K Enable puts your computer into 64K all RAM mode and keeps it there even when you reset it Your CoCo s 0 Box 897 Bc w OK prompt appears in reverse video to let you know you are in all essen PN SYNA TN RAM mode To return to the RAM ROM mode cycle power off and on Call Toll Free again 800 251 5008 es 800 545 2502 TENNESSEE ow 615 459 2636 TENNESSEE 615 254 0088 NASHVILLE See program listings on page 45 Richard Esposito and Raymond Roweare authors of HO T CoCo s Doc tor ASCII column Write them c o HOT CoCo 80 Pine St Peterborough NH 03458 56 HOT CoCo June 1985
198. ictures with the com puter you erase your mistakes immediately and forget them Ihavenothing against creating pictures on the computer it s fun But I don t think the computer should be used for professional art The rest of the February issue was great and I enjoyed it very much Susan Mohr Cottonwood MN Drawing Isn t impossible for me without a computer It s easier that s important because I have very little free time You re right good work does involve both patience and skill In my experience computer atded drawings take as long as other methods because the computer s inherent flexibility invites you to draw something yet another way I can get a much better feel for my work than is possible using other art forms Graphicom s stamps for example give me a degree of control over my work that ts impossible in other media New techniques and media benefit man kind if artists never tried new media perhaps we d still be limited to a few scrawls on cave walls The computer already has a place in professional art Look at CAD Computer Aided Design Drawing for instance If we were unable to use computers professionally we d be taking a large technological step back ward at the expense of efficiency I prefer to let 12 HOT CoCo June 1985 people do the thinking and let computers do the work Computer art can be reproduced exactly and even transmitted over phone lines No other medium allows so many people to enjoy a
199. in the first few chapters Despite this shortcoming the chapters themselves are well organized Be wamed that no amount of technical ex pertise can turn anyone into a creative pro grammer Barden showsyou the fundamentals it s up to you to find creativity by discovering how to combine graphics commands to create colors shapes and movement Color Computer Graphics contains insightful tips and explana tions throughout its many chapters Ifyou use this book to learn the essentials the applica tions and execution will fall into place Color Computer Graphics was uritten by William Barden Jr and is published by Tandy Corp Fort Worth TX 76102 1982 softcover 237 pp 5 95 Extended Color Basic s high resolution graphics pages Because it is written in relo catable code however it is easy to specify an offset when loading Edittron The manual tells you how to do this Owners of 64K ma chines have to use one of the map changing utilities that copy the Basic ROMs into high RAM first The program that you want to edit must be in RAM before you can start Edittron The documentation recommends loading the utility first followed by the Basic program and then typing the EXEC command to get Edittron running You can use it as a pro gramming editor when entering a new pro gram from scratch if you resort to the following trick Load Edittron as usual then enter a dummy one line Basic program Anything will do the manual
200. inch wide Use a high quality cutting tool We used an X Acto knife with a 411 blade Remove a portion of the green film at point D to expose the lands for soldering Solder a small wire jumper at point D We used approx imately of an inch from the lead of a watt resistor Any solid conductor wire of about the same diameter would suffice This connects the 5 volts to the old 12 volt line which will provide the 64K RAM chips with 5 volts to their pin 8 s Turn the PC board back over tothe component side Locate capac itors C48 C70 C45 C67 C35 C64 C61 and C31 Using a soldering iron carefully remove these capacitors On the PC board s component side locate the area above capacitor C75 to the right of the SAM s pin 26 and below the screw hole After you have found this area hold the PC board up to a light and mark a dot in the center being careful not to mark over a land Then drill a by Martin H Goodman Basic model they have plugged into this a 24 pin 8K by 8 ROM withColorBasic 1 3 Whenthis modelis upgraded to Extended Basic Tandy unplugs the 24 pin ROM and replaces it with a 28 pin 16K by 8 ROM that contains both Color Basic 1 3 and Extended Basic 1 1 Tandy also has to switch four or five jumpers located near the ROM socket These jumpers are labeled 64K 128K The switching of jumpers might require desoldering The labeling of the jumpers suggest that the 2A can handle 128K of RAM This is not true Thosede
201. ing at 544 95 20 Megabytes Internal Mount 9 W starling at 799 95 5 Megabytes External LEM starting at 499 95 10 Megabytes External System 7 starting at 699 95 20 Megabytes External System aty RE Vi ere toe UA TUR EAT starting at 999 95 Streaming Tape Backup System Interna Or External starting at 499 95 DOS Systems Available FULLY WARRANTIED PARTS AND LABOR 24 HOUR FL PPY DISK DRIVES POWER SUPPLIES AND CABINETS Our Disk Drives are UL approved Our Floppy Drive Cabinets and Power Supplies are Underwriters Laboratory Listed and have passed the required Federal IBM Heath DOS 1 0 2 0 2 1 3 0 or later Apple Franklin DOS 3 3 Prodos TRS 80 LDOS TRSDOS 6 x Newdos 80 Dosplus 3 5 CP M COCO DOS Max 80 LDOS OS9 SERVICE CALL TOLL FREE 1 800 343 8841 IBM PC XT WORKALIKE All of our computers have 8 slot motherboard 640K monochrome adapter 2 parallei printer ports 130 watt power supply free software all with our full warranty Communications Part 15 Section B EMI RFI tests PC 2 Floppy Drives Monochrome Monitor MS DOS Monitor 1 895 00 Warranty on all disk drives is one fuil year perts and labor Warraniy on floppy disk Color system resolution 720h x 240v MS DOS 2 295 00 drive power supplies is five 5 years In warranty
202. ing menu You can set the maze to a small medium or large size It can Contents Star Trape s uska pas 34 Color Computer Graphics 35 EGON 35 Side WISE OR 37 D al DOS uuu a 2 39 72 COCO 40 73 Sound Speech Cartridge 73 T S BA n n n DTE 76 STAR PAP An Introductoru Leuel Screen on Star Trap be black green or white It s possible to set the star and graphic symbol separately at one of three speeds Star Trap lets you com bine five kinds of gates in any order Play takes on a new look without maze walls The total number of game variations possible in Star Trap is 124 416 The 9 year old member of my family test panel has played Star Trap daily for more than a week To me this is a sure sign that Star Trap like my old carom board game passes the amortization test Cost Num ber of Plays Value W Star Trap is packaged by Tandy Corp Cat alog No 26 2510 1400 One Tandy Center Fort Worth TX 76102 It requires 16K Ex tended Color Basic and is available on cas sette or disk It sells for 19 95 June 1985 HOT CoCo 33 Monitoring The TV Buff llc by Gary W Clemens construction quality documentation sel up Performance lease of use gt N Co EO O OVERALL RATING 4 50 Hardware V Buff IIc is an adapter circuit from Green Mountain Micro
203. investment plan you must consider a wide range of variables before determining the plan s prof itability With the program accompanying this article your CoCo becomes a tool for making strategic investment decisions It quickly assesses the impact ofall those what ifs on your return on investment Whether you are a manufacturer investing ing stocks or a corporation planning a mar keting research program the problem you face is the same All such investments re quire current expenditure but the return on investment accrues over a number of years perhaps over 10 or more The difficulty in gauging the profitability of such long term projects is that inflation erodes wealth To figure profitability you cannot simply add up the benefits arising over the life of a project and then compare them to the investment made in the first year It is therefore necessary to assign a time value to money Take for example the case of a warehouse project that costs 1 million yields a profit of 150 000 per year and has to be aban doned after 10 years due to expiration of the lease lf you add the yearly profits the total profit is 1 5 million So in 10 years the benefit is about 50 percent of the initial in vestment and the payback period is just over six years The project appears very attractive viewed in this way However if inflation is 15 percent over the same 10 year period a dollar earned after 10 years would be worth less th
204. ions and disk maintenance Just move the hand to point to the volume and the new application is there And VIP Integrated Library has been made to work well with one disk drive or all four so be ready to push vour Color Computer to the limits Elegance VIP Integrated Library is a product with finesse inside and out Inside is one awesome but very elegant program On the outside it comes handsomely bound in two cloth covered gold embossed binders with slipcases like those you get with software for the Tandy 20007 And remember to get software of this quality for the Tandy 2000 you would have to pay hundreds more Stand Alone Power VIP Integrated Library is not one of those slip shod all in one slicer dicer machines good for one day and then you throw it away It fully integrates the six top of the line stand alone programs described in the following pages VIP Writer VIP Speller VIP Calc VIP Database VIP Terminal amp VIP Disk Zap You can buy the entire Integrated Library at once or you can buy one or two programs that you need now and upgrade to the integrated Library later t Shared Files Shared Features All VIP Integrated Library applications share comrnon leatures such as ease of use built in help the same commands full printer control full use of your 64K ot memory and step by step tutorials Most important all essential applications feature professional high resolution lowercase displays to give you a choice of 51
205. istics for easy analysis or print them on an optional printer for your records 826 3107 2495 Joysticks required Cassette recorder required Joysticks and recorder required oh 48 w me A Educational Software from Walt Disney j with Donald Teaching your children to tell time is easy with a little help from Donald Duck For ages 5 8 26 2530 Your Choice C 3495 Each QE e Telling Time e 4 Mickey s World of Writing An exciting way to build impor tant writing skills Young Sters learn the basics of sen tence structure and fundamental writing skills with Mickey Mouse For ages 8 11 26 2532 TL Downland You re alone a se cret cave travel ing from chamber to chamber collect ing keys gold and diamonds But can you jump climb and run to safety 26 3046 2495 Mickey s Alpine Adventure A frosty explora 7 1 tion of spelling PAINTS SR and reading il concepts Learn Q important spell C ing rules and the sounds of vowels and conso nants with Mickey Mouse and Donald Duck 926 2534 Space Probe Math An excit ing interstellar study of mathe matical word problems Youngsters learn the con cepts of area and perimeter during i outer space adventure For ages 7 14 26 2537 ss s s dil Canyon Climber Your climbing skills are under test when you fin
206. ity It can also simulate an 80 column display with horizontal scrolling T S Edit might be intimidating at first Be cause it can handle OS 9 and Radio Shack DOS it has several options for loading and running T S Edit s operating commands are Circle Reader Service card 4236 10 DISKETTES OR Character Set FOR CoCo or CoCo2 Easy to install board adds All 96 Standard Characters Upper amp Lower Case Displayed Simultaneously with NO Inverse Video True Lower Case Descenders Braces amp Vertical Bar Characters Slashed Zero Other Features Board ishardware driven and requires NO software drivers NO effect on any memory Enhances CoCo screen for OS 9 Operating System Programming e C Language Programming e Word Processing Communications Terminal Modes FREE 20 C 20 CASSETTES A subscription to the Coco Cassette gets you a tape or disk full of 10 quality programs delivered to you by first class mail every month The documentation included will help you run great utilities like Word Processor and Budget Analyzer or enjoy great games like Frogjump and Caterpillar Cave FOR AS LITTLE AS 46 CENTS EACH Limited offer Subscribe for a year on cassette and receive 20 Free C 20 cassettes or subscribe for a year on disk and receive 10 Free 5 single sided double density diskettes Now available on disk TYR I2ISSUES 55 6MO 6ISSUES 30 Single Copies 699 MA RAINBOW
207. iven Ideally we d like a printout of what you typed Send a self ad dressed stamped envelope for the fastest re ply Sorry but we cannot help you if you have modified the orignal program in any way Write to HOT CoCo attn Technical Editor 80 Pine St Peterborough 03458 Different ROMS Radio Shack has updated the Basic ROMs in the Color Computer several times since it was introduced Below is a list of the ROMs and the problems and benefits you might en counter with each one Color Basic 1 0 Cannot fully use the 64K upgrade and has only a 7 bit serial printer routine which inhibits sending graphics data to a printer Color Basic 1 1 Fully supports 64K and hasan 8 bit serial printer routine for graphics Color Basic 1 2 Executes code faster than previous versions but changed the way the ROM reads the keyboard This makes some software written for the older ROMs in compatible with the 1 2 ROM There is a sim ple fix which HOT CoCo incorporates into every program in which this problem is en countered If you don t know what Color Basic ROM version you have type EXEC 41175 after you first turn on your computer The ROM version will be printed on the screen Extended Basic 1 0 Has bugs in the PCLEAR PRINT USING and DLOAD state ments Extended Basic 1 1 Fixes the above mentioned bugs Disk Basic 1 0 This is in the disk con troller cartridge used with the grey CoCos and grey
208. k Drives Panasonic Teac 159 00 1 2ht double sided double density Disk Drive with ns amp case 199 95 Ow touse your new drive system on audio cassette Singie ps amp case 44 95 Dual 1 2 amp 54 95 Dual ps amp case Call o Color Computer Controller J amp M 129 95 FOR RADIO SHACK COLOR COMPUT 4 TANDON MPI OR TEAC DRIVE SINGLE SIDED 40 TRACKS SPEED 5MS TRK TO TRK amp UP POWER SUPPLY and CASE TWO DRIVE CABLE WITH ALL GOLD CONNECTORS e J amp M CONTROLLER MANUAL and DOCUMENTATION 9532955 5 5 LE ex E K 1 e ms PANASONIC 1 2 HEIGHT DOUBLE SIDED DOUBLE DENSITY DRIVE 500K unformatted gt POWER SUPPLY and CASE 2 DRIVE CABLE WITH ALL GOLD CONNECTORS X P E J amp M CONTROLLER MANUAL and DOCUMENTATION 539925 m S a SALE TAKE ADDED SAVINGS ON TWO DRIVE SYSTEMS 10 Diskettes DISKETTES with free library case Unadvertised Specials Drives cleaned aligned amp tested TECHNICAL STAFF ON DUTY PLEASE CALL FOR ASSISTANCE qe CALL US TODAY 617 234 7047 DEALER INQUIRIES INVITED ORDER TOLL FREE 1 800 635 0300 617 234 7047 DATA PRODUCTS 195 Linwood Street P O Box 546 We welcome ae Linwood Massachusetts 01525 e Visa Master Charge m CE Tb 617 234 7047 Checks allow 2 weeks for clearing HOURS MON SAT 9 6 EST COD Add 2 00 Circle Reader Service card 493 28 HOT CoCo June 1985 New Hard Drives e QUALITY VIDEO MONITORS Call For Startin
209. l data fields for a target string the collection of characters you spec ify That means I can search for a particular manuscript title or look at everything I have written for a particular magazine and so on a very welcome feature Flexi Filer This provides a nice counterpoint to PCF Flexi Filer by Computerware offers limited math and searching capabilities but does let you build a convenient self starting system You can engage an auto start option to look for a particular data file whenever you begin the program it takes only about 25 seconds to get the program and a 50 record file loaded into memory ready to go to work Flexi Filer can only search the first field of each record fora target string To retrieve specific record for updating you must know its location number in the file and it takes Prices Change Prices Change JES LPRICEBHEAKTHROUGH For Lower Prices For Lower Prices 1 800 343 8841 DEALER INQUIRIES INVITED MEGADISK HARD DISK DRIVE SYSTEMS TOLL FREE ORDERIN IBM PC Tandy 1000 TRS 80 Models 1 Compaq Eagle Sanyo For the 2 Tava PC Workalikes Color Computers Apple Franklin Heath Zenith Max 80 Complete with Hardware Cables Software and Quikfit Installation 5 Megabytes Internal Mount aW phen Heke reor PARE TA starting at 299 95 10 Megabytes Internal Mount w iso aaa ah Nee Y kak q Ake ete qn start
210. line modules they have no real function except as locators NAM is just a way of naming the program within the text END tells the as sembler that it has reached the end of the program Assemble the Program Now go ahead and assemble the program that you have written in the editor Here are the instructions to use with three of the more popular editor assemblers To Assemble a Program EDTASM A IM SDS80 C LSM MACRO 80 C RUN ASM To Run the Machine Code EDTASM GINIT SDS80 C G MACRO 80 C LOAD LINE EXEC If you were lucky the program ran without any glitches and displayed a black line on your screen An infinite number of things can go wrong with Assembly language pro grams Did your program scramble the con tents of the computer s memory put red garbage on the screen and turn on your tape recorder Maybe something is wrong Check the syntax of each line including every and Interpreting a Listing of LINE BIN Take a look at Program Listing I What is all that stuff Starting from the column on the left you have eline numbers address where stored hex representation of instruction data or address op code label column e instruction or mnemonic representation operand or argument that goes with the instruction and comments for the line The second column clearly displays the memory locations for this program LINE BIN beginsat 0E00and ends at 0EOC The third column g
211. lity is turn ing over to clients all materials that contain their data including disks and cassettes An June 1985 HOT CoCo 91 ATM 80 DATA ACQUISITION amp CONTROL SYSTEM FOR THE COLOR COMPUTER APPLICATIONS ENERGY MANAGEMENT PROCESS CONTROL SCIENTIFIC EXPERIMENTS ROBOTICS TECHNICAL EDUCATION SECURITY SYSTEMS FEATURES 20us 8 BIT A TO D CONVERTER 32 CHANNEL ANALOG MULTIPLEXER PROGRAMMABLE GAIN AMPLIFIER PEAK DETECTOR AMPLIFIER 8 BIT D TO ACONVERTER 4 BIT 0 PORT PROGRAMMABLE 2K RAM CONTROL SOFTWARE IN ROM USER S MANUAL ASSEMBLED amp TESTED T 184 95 MANUAL Wf comu e 1500 CLOCK CAL MEM CARTRIDGE FEATURES e COUNTS HOURS MIN SEC MONTH DATE DAY OF WEEK YEAR LEAP YEAR PROGRAMMABLE INTERRUPT TIMER 5 5 0 AND 60 SECOND INTERVALS ROM BASED CONTROL SOFTWARE 8K RAM SPACE CLOCK BACKUP BATTERY ASSEMBLED amp TESTED 8995 W 8K 811995 For more intormation call or write to CYBERTRON TECHNOLOGY 3131 TIMMONS 723 HOUSTON TEXAS 77027 713 840 1272 for the NEW TRS 80 color computer Color 80 PageWriter EASY TO USE LOW COBT WORD PROCESSING WITH 80 COLUMN TEXT WINDOW FOR CASSETTE BASED 16K COLOR BASIC USER CASSETTE ONLY 18 95 Color 80 BASI CALC mini spreadeheet program NEW LOW COST WAY FOR COCO USERS TO JOIN THE CALC CLUB 15 X 10 ROWS COLUMNS CASSETTE COLOR BASIC 18 95
212. llection WILLIAM M BOYER Founder WAYNE GREEN Article submissions from our readers are welcomed and en couraged Inquirles should be addressed to HOT CoCo Submis sions Editor 80 Pine Street Peterborough NH 03458 Include an SASE for a copy of our writers guidelines Payment for accepted articles s made at a rate of approximately 50 per printed page al rights are purchased Authors of reviews should contact the HOT CoCo Review Editor 80 Pine Street Peterborough NH 03458 Problems with Subscriptions Send a description of the problem and your current and or most recent address to HOT CoCo Sub scription Department Box 975 Farmingdale NY 11737 Change of Address Send old label or copy of old address and new address to HOT CoCo P O Box 975 Farmingdale NY 11737 Please give eight weeks advance notice Dealers Contact Ginnie Boudrieau Bulk Sales Manager HOT CoCo 80 PineStreet Peterborough NH 03458 800 343 0728 Probiems with Advertisers Send a description of the problem and your current address to Magazine Rt 101 amp Elm Street Peterborough NH 03458 ATTN Rita B Rivard Customer Service Manager If urgent call 1 800 441 4403 GOOD LOOKIN AUTOTERM shows true upper lower case in screen widths of 32 40 42 51 or 64 characters with no split words The width of 32 has extra large letters Scrolling is forward backward and fast Block graphics pictures are displayed automatically an
213. llpre voce 90 2395 tminataayCommodore intertace paid cash orders over 300 in the continental USA APO amp ip N Fde 1795 DUST COVERS FPO add 5 per hundred For priority mail add 8 per ROM Holder hundred PA residents add 6 sales tax Defective products Micro Stutter PRINTER RIBBONS must have Prior RA number Schools net 15 Ask About Phone Rebates autter 30500 PRINTING PAPER June 1985 HOT CoCo 77 6809 on Line by Bobby Ballard A Buffer for Videotex the letters you write the ques tions see on BBSes many people are still trying to find the save and print features for Videotex a terminal program from Radio Shack that only supports reading data on screen Ironically the Videotex manual states that itstores the last 31 pages in the text buffer That s great unless you want to use the in formation another day orload and run it as a program There is no save to tape or line printer feature and apparently many of you would like a solution to this problem Bufftext see Program Listing which ex amines RAM and lets you copy most of your Videotex buffer to tape or paper is that so lution Notice I said most of your buffer You copy RAM to screen tape or printer and re save it in ASCII format You lose some of the first pages you download to Bufftext so keep your Bufftext files short to avoid overwriting any more buffer spac
214. llusion is produced Look closely at the border and see if it appears to change directions Feel free to use the border in any of your own programs ae Jack Shaffer Oakwood IL Better Colors I was disapointed to discover that when using high resolution graphics with my F version CoCo colors that should have been been blue came out a frosty green A look at the color modulator circuit showed that Radio Shack had installed a capacitor induc tor and 33K resistor from the clock signal to the emitter from the video amplifier transistor Q3 in attempt to bypass someclock signal into the video signal The circuit was not working well because no signal was being injected into the very low impedence emitter of the transistor The reason that the circuit worked at all was that the junction of the 10 CLEAR200 15000 CLS 20 15000 015103 30 READOP N VAL amp H 4OPS 40 POKEX N S S N NEXT 60 PRINT 169 BORDER PIZZAZZ P RINT 238 BY PRINT 298 JACK S HAFFER 70 EXEC15000 FORX 1TO75 NEXT GOT 070 80 DATA 31 8D 00 5F 1F 21 E6 8D 00 5D 3A 1F 12 8E 04 00 A6 A0 A7 89 8D 44 8C 04 20 26 F5 8E 04 3 F A6 AU 90 DATA A7 00 8D 36 30 88 20 8C 05 FF 26 F2 8bE 06 00 A6 A0 A7 82 80 25 8 05 0 26 5 8 05 0 6 0 7 00 100 DATA 30 88 E0 8D 14 8C 04 00 26 2 6 80 00 18 4 81 04 26 0 1 4F A7 8D 00 0E 39 81 BF 26 04 31 8D 00 01 39 110 DATA 9F AF CF BF 120 DATA 00 Program Listing 1 Border Pizzazz
215. lower memory Thismeansthat programs communicating back and forth can have altogether different variables table data It should be possible using either Basic or machine language programs to devise algorithms that would allow more complete use of all 64K The trick is to have identically addressed duplicate code in both memory banks It might even be possible to have two totally different Basic programs running at the same time Perhaps you could operate RAM bank 2 asa printer buffer while another program runs in bank 1 Or perhaps you could write ma chine language code to let you use bank 2 as a minidisk emulator to store data for a program running in bank 1 This would give more room in bank 1 for the program A simpler way to doall these things is to store required machine language code in a cartridge ROM This would allow all the opera tions I have described to be performed without the need for dupli cation in the RAM banks The cartridge ROM would be independent of the RAM areas and it could preside over both areas in the same way the Basic ROM does I would be glad to hear from anyone having ideas or questions about this method or potential uses for it If you want a reply please send a self addressed stamped envelope with your query See program listing on page 45 Address correspondence to Henry C Grace Jr 424 Ranchwood Drive Baton Rouge LA 70815 BUSINESS GRAPHICS by Terry Riegel Pie in here are many prog
216. ly when both inputs are false In contrast the outcome of 1 0 with carry out of 1 l 1 1 with a carry out of 1 As in the decimal system you work binary addition from right to left Hexadecimal notation uses the decimal digits zero through nine and letters A through F Adding hexadecimal numbers is more difficult than adding binary numbers AND is true only if both inputs are true The so don t feel guilty about using Table 2 as a logic diagrams in Table 1 show all possible System Requirements crib sheet It contains the results for O 0 to outcomes of OR and AND when there are two F F but remember to carry a one out to the inputs CoCo or MC 10 next place when the sum of two digits is more a M 4K RAM than the value of F Binary and Hexadecimal Addition Color Basic or i Binary addition is easy to learn but be Micro Color Basic Running the Proqrams the Proqrams Listing 1 is for binary OR By making sim cause you work with only zero and one you ple modifications in this program you can have to make carries much more frequently 70 HOT CoCo June 1985 M mg sg TEM use it to practice binary AND and binary ad dition Be sure to save each version of the program you d like to go back to later Enter and run Listing 1 A problem ap pearsat the top of the screen When you sub mit an answer the program tells you whether you are right or wrong If the answer is wrong you must try the problem again
217. mpatible with Side Wise There are some procedures to remember when using Side Wise with applications pro grams For the most part these concern set ting line length If you want Side Wise to print 150 characters wide remember to specify it wherever it is appropriate in your application program For example before producing an ASCII file with DynaCalc s out put to disk file command you should change the paramater for width ofa printed page If you don t Side Wise generates 80 columns of spreadsheet turned on its side The attributes command gives you the appropriate options The complete com Mouse Technological Software For The Color Computer Many Companies call their Home and Business Software User Friendly ONLY ONE CALLS IT Childs Play BUSINESS DIVISION Send for TCE P O BOX 2477 GAITHERSBURG MD 20879 FREE Catalog 1 800 4TC 4TCE 1 301 963 3848 Circle Reader Service card 386 38 HOT CoCo June 1985 mand string fora 150 character spreadsheet is APW150 You should also change the line length if you want to use Side Wise to print a file you wrote with your word processor Side Wise does not recognize imbedded control char acters so get rid of them before saving the file to disk For example you must strip TeleWriter 64 documents of all font control commands introduced by a caret If you leave them in you will receive anodd near verbatim printout as the program struggles to interpret t
218. mputer terminal still a dream in most school sys tems More important every student would have to learn in the precise way in which a computer instructs Any competent teacher knows that one ap proach to teaching a concept to a group won t be effective with every student in that 84 HOT CoCo June 1985 group Each person has an individual leam ing style a combination of visual and audio requirements necessary for learning After I introduce a new concept in a class I can tell quickly by watching the students faces and responses who has understood the material and who is lost I asthe teacher can then restructure my approach The computer is unfortunately stuck with its program and unable to sense nuances in the students un derstanding or reassess its attack Drill and Practice Drill and practice is an area in which much software has been developed In theory it works well A student immediately knows whether a response is right or wrong after completing each problem No longer is there the frustration of copying 20 sentences or math examples doing all the work and then discovering that none of the answers is cor rect Instant feedback with a positive note certainly should be an incentive to the stu dent In actuality however drill and practice is still drill and practice It might be more fun and have a game format on a computer but it s not an innovative method According to Ann Lathrop editor of The Dig
219. n Dannemora NY Microline 92 CoCo Hookup I use an Okidata Microline 92 with my Color Computer and installed the serial card myself Here are some tips on the process Follow the instructions that come with the card and be sure to check the jumper plug settings on the main control circuit board before mounting the serial card Jumper plugs SP1 and SP2 should be set to the B side on the main board Next the card has 16 switches that you must set properly to select baud rate parity bit length and so on The switch settings for proper interface with the as follows Switch Setting Switch Setting 1 OFF 9 OFF 2 ON 10 OFF 3 OFF 11 ON 4 OFF 12 ON 5 ON 13 OFF 6 OFF 14 OFF 87 OFF 15 OFF 8 ON 16 OFF Continuing with the serial card set the jumper plugs as you did with the main control board On the serial board there are three jumper plugs to set Set all of these to the A side since this sends a printer busy signal to pin 11 on the serial board Note that the jumper location for side A or side B on the main board is not the same size as the serial board For example side A on the main board can be jumpered on the left side while side A on the serial board will be jumpered on the right side of the pins Both boards are clearly marked Next set the switches that select character set page length and so on These are located in front of the printer inside near the control panel The following
220. n performing a search I wish Cookbook had more flexibility but nothing s perfect lil Scott Norman is the manager of solid state science at GTE Laboratories in Waltham MA and has been personal computer enthu siast for five years Write to him at 8 Doris Road Framingham MA 01701 Products Mentioned In Computer Room Pro Color File Derringer Software P O Box 5300 Florence SC 29502 803 665 5676 64K disk 59 95 Flexi Filer Computerware 4403 Manchester Ave Suite 102 Box 668 Encinitas CA 92024 619 436 3512 32K disk 54 95 Elite File Elite Software Box 11224 Pittsburgh PA 15238 412 795 8492 32K disk 74 50 CoCo Cookbook Computerware 32K disk 27 95 Introducing The Super Smart DATA PACK TERMINAL COMMUNICATIONS SOFTWARE Also Supports The PBJ 80 Column Word Pak Deluxe RS 232 Pak Parallel Printer Card and PBJ 2SP Pak TAPE 534 95 gt FEATURES T LI No Lost Information When Using Hi Resolurion Display On Line ASCII Compatible File Format Full Text Buffering Terminal Baud Rates 300 ro 9600 Automatic Word Wrap Eliminates Split Words Full Half Duplex Freeze Display and Review Information On Line Send Files Directly from Buffer Disk Full Disk Support for Disk Version Send Control Codes from Keyboard Separate Printer Baud Rates 110 9600 Display on Screen or Output Contents of Buffer to Printer Automatic File Capture Pr
221. ne Printers are even more popular over 60 percent of you own at least one Most of you without a printer have plans to acquire one by year s end Modems are growing fast in popularity as interest grows in communicating with electronic information servicesand computer bulletin boards Look for modem usage among Color Computer owners to double this year What s the most popular CoCo peripheral of all No contest It s joysticks by a wide margin with an 85 percent ownership And you say you never play games Til Next Month Let me hear from you okay How do you like the new look of HOT CoCo What about the pull out program listings in the center ofthe magazine Do you like Scott Norman s new column The Computer Room Or Assembly 101 by the Perottis father and son Don tsiton your hands writeto us or drop a note on CompuServe 70310 676 Have a good month and don t forget to tell advertisers I saw itin HOT CoCo 96 HOT CoCo June 1985 From Computer Plus to YOU PLUS after PLU Color Computer Il Model 100 8K 339 wl16K Ext Basic 435 i 899 Model 100 24K 540 wi64K Ext Basic 179 dH G Color Computer Disk Drive DWP2410 489 DMP 120 385 Drive 0 289 Drive 4 220 DWP540 1295 BIG SAVINGS ON A FULL COMPLEMENT OF RADIO SHACK COMPUTER PRODUCTS COMPUTERS ETC Colorpede 29 95 Model 4 Portable 970 Radio Shack Drive Controller 149 Juniors Revenge 28 95 Model 4 970 Radio Shack Ext Basic Kit 39 95 P
222. ne spreadsheet tables with VIP Writer documents to create ledgers projections statistical and financial reports and budgets Radio Shack Catalog No 90 0143 64K Comes with tape amp disk 69 95 VIP Programs do not work with JDOS VIP Terminal RATED BEST IN JANUARY 1984 RAINBOW For your important communication needs you ve got to go beyond software that only lets you chat You need a smart terminal so that you can send and receive programs messages even other VIP Library files VIP Terminal has more features than communications soft ware for CP M IBM and CP M 86 computers Herb Friedman Radio Electronics February 1984 FEATURES Choice of B hi res lowercase displays Memory Sense with BANK SWITCHING for full use of workspace Selectively print data at baud rates from 110 to 9600 Full 128 character ASCII keyboard Automatic graphic mode Word mode word wrap for unbroken words Send and receive Library files Machine Language amp BASIC programs Duplex Half Full Echo Word length 7 or 8 Parity Odd Even or None Stop Bits 1 9 Local linefeeds to screen Save and load ASCII files Machine Code amp BASIC programs Lower case masking 10 Keystroke Multiplier MACRO buffers to perform repetitive pre entry log on tasks and send short messages Program mable prompt or delay for send next line Selectable character trapping Send up to ten short messages KSMs each up to 255 characters long
223. nfiguration as they Eo in the board With each of the new chips gently bend pin 4 straight up the fourth pin down fromthe notch on the left side using long nose pliers Gently squeeze the remaining pins inward a small amount so that when placed over a chip in the foam it will hug it and not fall off With the exception of pin 4 solder each pin of the new chip to the correspond ing pin of the chip beneath it Caution Do not use excessive amounts of solder or hold the iron too long Solder a piece of wire to each of the bent up pin 4 s connecting them all and leaving enough slack so that you can replace the piggy backed chips in their sockets Remove the 6883 SAM chip and place it in the conductive foam Pin 40 is the first pin to the right of the notch Counting backwards on the right side locate pin 35 the sixth pin from the top Solder one end of a 33 ohm 1 4 watt resistor to the top of the SAM chip s pin 35 so that you can replace it in its socket Bend the resistor lead so that the resistor rests on top of the SAM and the lead points toward the RAM chips Return the SAM to its socket and solder a wire connecting the unused lead of the resistor to the most convenient pin 4 of the RAMs Fig 2 Do not move the jumpers Close up the machine and you are done BEFORE MODIFICATION f ov LE AFTER MODIFICATION ev c REMOVE GREEN FILM AND SOLDER JUMPER Fig 3 Foil Side of PC Board 4 or 16K to 64K D Boa
224. ng or compiling the text program into binary machine code and running or executing the binary program Writing Assembly language will not be like writing Basic the assembler has a built in editor that checks the syntax of each line as you enter it When you are ready to run a Basic program the syntax errors have all been fixed With an assembler there is no error checking in the editor errors are flagged as the text program is assembled When you make a mistake programming in any language the program does not do what you expected When machine coded or bi nary programs go astray however they usu ally crash the computer Assembler software typically consists of three essential parts the editor in which an Assembly language program is written etheassembler that assembles or converts the Assembly language program into ma chine code and debug or monitor program that displays sections of memory thereby displaying er rors for debugging What Is in a Prog ram Whenyou use a calculator you must sup ply data and instructions When you use a computer you enter the data and instruc tions into memory The CPU must know where to find the instructions and the data System Requirements 16K RAM Color Basic Editor Assembler hence it must also keep track of the ad dresses that it uses ADDR CODE INSTR 0600 86 LDA IST INSTRUCTION 0601 60 60 DATA 0602 B7 STA 2ND INSTRUCTION 0603 04 04 ADDRESS
225. nsultants OS 9 trademark Microware June 1985 HOT CoCo 39 TUTORIAL by Richard E Esposito and Raymond W Rowe 4 279 L2 BU1F1FN D4G1L2 R3D 5 1 1 1 BRIR2LIUI 33F3 U6D6F 2G1D4 U6F RSBSLJRlIE L 4 U1D1F4 E3U1 106 22U 40 HOT CoCo June 1985 Revisited Get the scoop on upgrading your CoCo no matter what version you have S struggling with 32 16 or even 4K of memory in your Color Computer In most cases increasing your CoCo s memory ca pacity is easy enough for anyone with the confidence to try Some upgrading techniques however are too involved for novices Opening your Color Computer voids its warranty and if you make a mistake such as cutting a land on a printed circuit PC board your local Radio Shack technician might refuse to service it Each upgrade method in this article is rated for level of difficulty When RadioShack wascharging 150 for the64K RAM chip set the do it yourself upgrade could save the user up to 100 worth risking damage to the CoCo Today the savings are less so if anything in this article is not clear to you don t go ahead with the procedure A wrong assumption could be costly Read all instructions thoroughly and make sure the modification does not exceed your level of experience And make sure you have all the parts on hand Ground Rules Chips are numbered counterclockwise from the notch Fig 1 Where soldering is called for use a 25 to 40 watt
226. ny row to have consecutive dots Fig 1 Grid for the Letter A Program Structure Table 1 outlines the program structure One feature of the program the storage of charac ter codes as 7 bit numbers and their retrieval as strings deserves further discussion Line 20 reserves and protects a block of 960 bytes of memory using a CLEAR state ment This space is for the ascender descen der code and the nine binary dot codes for the 96 character set Line 310 POKEs them into memory and line 280 retrieves them from the Gemini s RAM You must transmit the codes as what I call numeric strings CHR 8 rather than in the ASCII form 8 The most efficient way todo this is to redirect the Basic pointer for the string variable con taining the code A to the area of memory where the codes have been POKEd as 7 bit numbers The VARPTRfunctionreturns the pointer to the string A POKEing location L which contains the data belonging to A intothestring pointer effectively fills A with the necessary data Running the Program Type in the program exactly as listed The spaces between elements are important for lining up the video display As written the program runs on disk For tape change lines 480 and 490 to CLOADM and CSAVEM re spectively Run the program and the com puter prompts you to turn on the printer lt then asks you for the baud rate I run mine at 9 600 baud using a Blue Streak interface the printer se
227. o Telewriter 64 Computer Word Processor 3 display formats 51 64 85 columns x 24 lines True lower case characters User friendly full screen editor Right justification Easy hyphenation Drives any printer Embedded format and control codes Runs in 16K 32K or 64K Menu driven disk and cassette I O No hardware modifications required THE ORIGINAL Simply stated Telewriter is the most powerful word processor you can buy for the TRS 80 Color Computer The original Telewriter has received rave reviews in every ma jor Color Computer and TRS 80 magazine as well as enthusiastic praise from thousands of satisfied owners And rightly so The standard Color Computer display of 32 characters by 16 lines without lowercase is simply inadequate for serious word processing The checkerboard letters and tiny lines give you no feel for how your writing looks or reads Telewriter gives the Color Computer a 51 column by 24 line screen display with true lower case characters So a Telewriter screen looks like a printed page with a good chunk of text on screen at one time In fact more on screen text than you d get with Apple II Atari TI Vic or TRS 80 Model III On top of that the sophisticated Telewriter full screen editor is so simple to use it makes writing fun With single letter mnemonic commands and menu driven 1 O and formatting Telewriter surpasses all others for user friendliness and pure power Telewriter s
228. ogrammable Word Length Parity and Stop Bits Saveand Load Text Bufferand Program Key Butlers to Tape or Disk 9 Hi Resolution Display Formats 28 to 255 x 24 True Upper lower Case Display Kill Graphics Option for an Extra 6K Supports Line Break Automatic Memory Sense 16 64K 9 Programmable Function Key Variable Length Macro Buffer Programmable Prompt Character or Delay to Send Next Line Programmable Control Character Trapping Programmable Open Close Buffer Characters Automatic Key Repeat For Editing Program and Memory Status Displays The Wait is Finally Over ANNOUNCING The CBASIC COMPILER Now anyone can create fast efficient Machine Language Programs without the Drudgery of using an Assembler CBASIC is a fast Machine Language integer Basic Complier that can convert Color Basic programs into fast machine language programs CBASIC featuresover 100 Basic Commands and functions that fully support Disk Tape Screen and Printerl O Hi amp Low Resolution Graphics Sound Play and String Operations just like Color Basic CBASIC also includes a powerful full featured Basic program Editor using a 51 64 or 85 by 24 line display The Hi Resolution display can be automati cally included in your compiled program for enhanced display capability and allow mixed text and graphic displays CIRCLE COLOR CLS DRAW GET LINE PAINT Program Control PCLS PCOPY PMODE PRESET PSET PUT RESET SCREEN SET POINT PPOINT PLAY SOUND
229. ompany Radnor PA 19089 800 345 1214 Reader Service 555 Colorware Inc 78 03B Jamaica Ave Woodhaven NY 11421 718 647 2864 Reader Service 556 Computer Systems Distributors P O Box 9769 Anaheim CA 92802 714 772 1390 Reader Service 557 Creative Technical Consultants 16 8 Sangre de Cristo P O Box 652 Cedar Crest NM 87008 Reader Service 558 Derringer Software Inc P O Box 5300 Florence SC 29502 5300 803 665 5676 Reader Service 559 Educational Micro Inc 1926 Hollywood Blvd Suite A620 Hollywood FL 33020 4524 305 920 2222 ext 620 Reader Service 560 can load in the keystrokes and do it for you And Simon can re member as many as 6 000 key strokes Simon is produced by Derringer Software makers of Pro Color File and many other programs for the Color Com puter Itcosts 24 95 plus 3 for shipping Vidtron which created Edit tron has a new keyboard en hancer called Goldkeys The software based enhancer adds a type ahead feature 10 user de fined functions and 10 prede fined functions to your computer among several other features Goldkeys requires 64K and Extended Color Basic It comes on cassette for 20 and disk for 22 plus 2 for ship ping Island Software P O Box 1402 Oak Harbor WA 98277 Reader Service 562 Saguaro Software 7331 East Beverly Drive Tucson AZ 85710 602 623 3321 Reader Service 563 Scotch 3M Center St Paul MN 55144 6
230. on for the CoCo A plus sign indicates that this setting is standard as set at the factory A question mark indicates a recom mended change e g slashed zeros are easier to spot when debug ging or that it wasn t clear from the manual so experiment after you get the printer working If there isn t an asterisk or question mark use the standard setting When I use a 4 foot flat cable with iny disk drive interface severything works fine But whenlusethe cable withtheRadio Shack Multi Pak Interface the keyboard crashes and garbage ap pearson the screen Why William Link Richfield NC Not many people have been successful in extending the Multi a Pak via ribbon cable This method decreases noise immunity and reduces the bus s bandwidth The E and Q clocks are distorted by capacitors C27 and C28 Also an additional delay occurs because the data bus is enabled via the PAL chip Switch Open Closed Function 1 5 ON OFF Processing of DC1 DC3 XON XOFF signal Line feed when the buffer is full Print command CR LF VT FF US Line feed after carriage return CR Print slashed zero Selection of buffer selection lines Top of form TOF to TOF line length Power on line feed pitch in inches Power on character pitch 10 cpi proportional Selection of 7 or 8 bit data Selection of power on deselect select Power on unidirectional printing 1 6 ON OFF 1 7 CR ALL 1 8 OFF 2 1 OFF ON 2 2 N 1 2 3 66 72 2
231. on to The Computer Room When HOT CoCo approached me about doing this column the editors said theywanted a series that would discuss ways of applying the Color Computer in the home small business or other organization Since that s one of my favorite computing themes I didn t need much recruiting While m sympathetic to the needs of the newer user include enough material on applications of commercia products to ap peal to a broader audience This won t be a hard core programming column but I do plan to discuss modifications or additions to existing programs from time to time I may even slip in a couple of my favorite auxiliary routines for you to incorporate into your own material And finally I hope my discussions of how other CoCo owners have used their machines to solve real problems will encourage readers to do some experimenting on their own Keeping Track of Stuff Thingsrarely turn out as we expect Once IthoughtI d use my ColorComputer primar ily for data management organizing facts and figures and keeping them on file for in stantrecall It didn t quite happen that way One reason was that I found a lot of other things to do with my machine and another was the unsatisfactory state of early data handling software In those days I had to write my own Color Basic programs for a tape system for Pete s sake Commercial software is far better now Nevertheless I stil find that I don t use data management p
232. operly in bank 2 In bank 2 avoid all commands like PCLS PCLEAR and so on Also if you press reset in RAM bank 2 you will return to bank 1 Onone occasion I lost the program in RAM bank 2 after pressing reset However every other time the program was still there when switched back to bank 2 again Cross Communications The two RAM banks areindependent but it is possible for them tocommunicate with a Basic program Machine language subrou tines 5 and 6 in Listing 1 allow this cross transfer using Basic programs Subroutine 5 called by EXEC 32413 transfers from RAM bank 1 into bank 2 Subroutine 6 called by EXEC 32443 transfers from RAM bank 2 into bank 1 Both calls should be made as part of a Basic program or segment of a program and stored identically in both RAM banks Program Listing 3 is a demonstration program for Basic transfers between the two banks To use Listing 3 follow this sequence CLOAD Listing 1 and run it enter EXEC 32383 to reenter bank 1 CLOAD Listing 2 but donot run it yet enter EXEC 32326 subroutine 2 to duplicate Listing 2 in bank 2 enter EXEC 32383 and run The program will print messages and input prompts under Ba sic control from both RAM banks Note from the above sequence that machine language subroutine 2 duplicates all of RAM bank 1 into RAM bank 2 anytime you execute it Subroutines 5 and 6 on the other hand duplicate only the Basic pointers and video RAM
233. or out of warranty service is 24 hour 5meg XTua 1 Floppy Drive Monochrome Monitor MS DOS 2 045 00 turn a round on all disk drives and power supplies Color system resolution 720h x 240v 5 5 2 445 00 Tandon Full Height Drives 8 Floppy Drive Monochrome Monitor MS DOS 2 395 00 100 1 Single Sided 40 tk Bare 125 00 XTira Color system resolution 720h x 240v MS DOS 2 795 00 8 2 20meg XTtra Floppy Drive Monochrome Monitor MS DOS 2695 00 Ia GASE with Power Supply 156 45 XTira Color system MS DOS 100 2 Sided 40 ik 120 05 Internal Tape Backup For Any Of Above systems Add in Case with Power Supply 206 95 Dual Drives in One Cabinet 381 95 Half High Drives Dot Matrix FRINTERS Single Sided 40 tk Bare 122 00 Case with Power Supply 156 95 Siar Micronics Dual Drives 40 One Cabinet 106 55 Gemini X Series Parallel 120 CPS Near letter quality starting at 259 95 le Case Wh Poss Subal 176 95 Delta 10 15 160 CPS Ma S DI ne hn starting at 424 95 upp Y 7 Radix 10 15 200 CPS starting at 649 95 Dual Drives Cabinet 346 95 Panasonic 1090 24995 65 4 Dual Sided 80 ik Bare 162 00 Daisy Wheel In Case with Power Supply 196 95 Silver Reed 440 80 Column 0 CPS 315 95 Dual Drives in One Cabinet 356 95 550 132 Column 19 CPS 43995 TEACSHalD tan 5500 770 132
234. ore Protection I d like to offer an alternative to Mr Hill s method of protecting unauthorized use of your disk files HOTCoCo April 1985 p 13 Simply use this formula SAVE file name CHR 143 The directory then shows the nameofthe file so anyone trying to load it would type in the name listed but the CoCo would return an NE error because it doesn t see CHR 143 You can get into the file by typing LOAD file name CHR 143 To kill a protected file type file name 143 BAS Barry Hornstein E Rockaway NY Home Improvement Mr Rose s Homespread program is great But I added a HOME command to eliminate tapping thearrow key to get thecursorto Al I also added an exponential function to allow formulas with square roots and exponents Change the program to read 699 PRINT8488 COMMAND B C I P S 651 IF 5 5 8 2841 IF MIDS FTS W 4 1 THEN RESVAL OPS 1 VAL OPS 2 2891 IF MIDS FTS W 8 1 2 THE RE RE VAL OPS 3 8000 PRINT 448 HOME FOR D 1 TO 500 1023 1 143 0 34 1 VP 1 RL 1 1 GOSUB189 9 GOSUB9 55 GOTO129 Then you can execute HOME and have the cursor move to Al by typing H To find a square root raise the number to a power of 0 5 I d like to exchange information with any one interested in computers Petri Pellinen Rajavartiosto 32A 2 SF 55910 Imatra 91 Finland Accurate Timing Your answer to a reader s
235. orner 0ffice bu Jeff DeTrau Publisher All About You W constantly surveying you the HOT CoCo reader to find out what you think of our magazine Your opinions on content readability and appearance are important At the same time we ve gathered consid erable information concerning the hardware you own and your favorite applications In the process we ve also learned a great deal about you as people This month I d like to share some of our findings with you The Reader HOT CoCo readers are anything but average if that word is taken to mean unexceptional or mediocre Perhaps the term I want is composite We cancreate a composite sketch of a typical HOT CoCo reader by combining the various bits of demographic information we have collected Let s take a close look at this nonexistant Composite CoCo Fan or CCF for short While it s highly unlikely that you fit the CCF profile exactly it can still be fun to discover where you do and don t match the averages How old are you Our CCF is 32 years old but remember that s only an average The actual spread of ages is quite wide from grade school students to retirees While 39 percent of our readers are over the age of 35 the under 25 crowd hangs right in there with 31 percent I m starting to feel old In summary 25andunder 31 26 35 30 over35 39 The effects of such a broad range of ages can be seen in the two most popular occupations of HOT CoCo reader
236. ot Encnonter 32x Edittron turned out to be the ideal tool for editing the DATA statements in my personal finance program sors to locate multiple occurrences of a character string This is handy if you want to change the name of a variable wherever it appears in a long program This command combination identifies only the first occur rence of your search characters on each pro gram line Examine complex program listings carefully The cursor control commands are fine for when you just want to nose around the code but suppose you want to change things Ed ittron s other mode screen editing offers 10 helpful commands Six of these use only a Quality Software At Discount Prices Prickly Pear Software 29 75 AIRNAY Disk Oniy Rom 0x Modem Moster Laz POCk 32K 2 Disks 32K 48 75 48 75 1825 me Reviews M single keystroke each and the other four use two keystroke commands The six single keystroke commands let you change insert or delete characters within a Basic line and extend remove or move a line by assigning it a new number The last command is the only one that gives you direct control over line numbers You can t tinker with a line number by means of the character changing command for instance That would proba bly play havoc with some of Basic s pointers The remaining screen editing commands are line oriented instead of character ori ented They allow
237. ould say that CoCo Logo by Dale Pe terson Don Inman and Ramon Za mora is a series of letters about the life of Uncle Bert Woofensburger a Michigan pig farmer written to his niece Molly But then it doesn t sound like an educational com puter book doesit That sthecharm of CoCo Logo It takes a whimsical approach to teach ing Logo that doesn t overpower its ability to educate And it manages to cover much of what there is to know about Radio Shack s Color Logo For example its folksy chapter beginnings about turtles under the house visits to the fair and eating spaghetti are amusing but they also correlate with the in formation in the chapters and help teach readers how to program in Color Logo CoCo Logo is the best of five books I ve seen on the topic of Color Logo The original Uncle Bert letters were published by The Rainbow They have been reedited footnoted and reor ganized in a sequence that describes the use of Color Logo in a logical fashion The format of the book makes it enjoyable and easy to read Uncle Bert is no computer genius In fact at the start he is just as puz zled about Logo as any beginner But he makes clever mistakes an often delight fully tongue in cheek manner Uncle Bert is a reassuring character because he offers the wisdom of age a friendly willingness to ad mit error and the encouragemnet to keep trying And even though Uncle Bert lives in a rustic setting he is no hayseed He s a
238. per fect original or presents such potential for ar tistic collaboration Drawing should be easier so that more peo ple could enjoy it Thank you for the opportu nity to expand on my original comments 1 hope you enjoy your hobby as much as I enjoy mine Ana Landa Our program doesn t do anything creative it s a tool like charred sticks on a cave wall were at one time Statements from your letter indicate that you feel art should be left in the hands of those with the right technical skill If creativity can be expressed in such varied me dia as music sculpture poetry dance and painting then it is creativity that is important not the technical expertise with which it was rendered nor the form that it embodies Theartistic work of school children shows a marked decline during adolescence when they can no longer satisfactorily express them selves with their limited technical skills Some improve their skills but most stop trying Given a creative outlet that requires less skill they will again experiment with expression If you are doing commercial artwork or paint ing a portrait you t afford to make a mis take Fear of making mistakes may prevent someone for whom drawing is difficult from ven turingan untried stroke Theability to undo mis takes encourages experimentation The computer with its limited resolution texture and color is nonetheless a perfectly valid medium for creativity As long as the comp
239. pins on one of the RAMs DSL s 128K the Easy Way does not use atoggleswitch for bank selection You use POKE commands to switch in and out of mem ory segments The new RAM is divided into two pages each of which occupies the lower 32K of the CoCo s address range These are designated by DSL s documentation as Page I and Page 2 The bottom half of the original 64K the work space normally available in Basic is called Page 0 With this system there is a fourth 32K memory segment the high RAM which is normally unavailable to the CoCo s Basic because it occupies the same space address as the ROMs This space is accessible with the DSL kit and can be used to hold a control program or a copy of the Basic ROMs The 20 page instruc tion booklet that comes with 128K the Easy Way includes Basic and Assembly language versions of a page changing routine that takes care of all bookkeeping chores such as clearing space for strings and arrays and setting stack pointers for the various pages Like the Dynamic Electronics kit 128K the Easy Way will find its niche initially with experienced programmers Some commer cially available software can capitalize on the new memory the Star DOS and XEX operating systems already work on the DSL product And there is other software for 128K the Easy Way under development including new basic interpreters a word processor and a database manager People who want to write 128K software are invited to contact Dennis
240. print included Tape 52495 Disk or Amdek 52995 Hardware Too Amdek Dual 3 Disk Drive 349 Includes Box Of Disketes And Dive Coble If You Can Find A Better Advertised Price Show Us We ll Beat It Amdek Color Monitors Color 300 Color 500 3269 3399 Amdek Color 4 499 Reconditioned 90 Day Warranty MDP Universal Video Diver 25 95 With Purchase Mark Data Universal Video Driver Works On Att No Soldenng 27 95 Video Reverser Switch Have reverse video the fip of a switch Easy installation soldenng workson all models except new 16K Coco 2 4 495 ESK 5 1 4 Disks SSDD Box 10 16 ESK 5 1 4 Disks DSDD OF 10 24 100 Tested Disk e 10 Year Exchange warranty Amdek 3 Diskettes OF 10 35 This Month s Special Tom Mix Software 10 Off Already Discounted Prices Call For Sale Prices Good Through 5 20 85 While Supplies Last Send For Our Free Catalog 4 00 Shipping We ll Ship Your Order To Anywhere In The USA For 4 00 Software Only Hardware Shipped At Cost Outside USA 2 00 Per Program 6 00 Mox See Our Ofher Ad In This Issue Saguaro Software Circle Reader Service card 160 NEW 24 HOUR ORDER LINE 602 795 4159 7334 E Beverly Drive Tucson AZ 85740 Arizona Residents Add 7 Tax C O D Orders Add 2 00 Add 4 00 For Shipping Dealer Inquiries Invited e Some Quantities Limited AUTHORS ASK ABOUT OUR ROYALTY PROGRAM M
241. pt to break into Latin or cite arcane facts the kindof material that kidsskipovereasily and adults often enjoy CoCo Logo deals out Color Logo in small bites with follow along instructions One of the teachings of the book is that Logo is a debugging process What is right for one per son might be wrong for another The pro u 5 s s m grammmer s aim should be to get the pro gram to carry out the plan The first chapter tells how to set up your system and get the program to run Bert is mildy puzzled but manages to make the Logo turtle perform a few rudimentary trav els draw a doghouse and learn for himself the different operating modes break edit run and doodle In some of the later chapters I found new understanding and new ways to use Logo capabilities The beauty of CoCo Logo is its pace Inter ested children as young as eight or nine will be able to follow the text The authors are aware that Logo was not designed as a pre determined set of procedures to which all must adhere but as a discovery process for the learner that can go in many directions by fostering understanding and new ideas about Logo W CoCo Logo was written by Dale Peterson Don Inman and Ramon Zamora and pub lished by John Wiley amp Sons New York NY 1985 softcover 127 pp 12 95 Sounding Out Tandy s Sound Speech Cartridge by Gary W Clemens construction quality documentation sel up performance jeaseof use gt N Co
242. r child will gain Mr Bear s wink of praise amp approval CoCo 16K Tape 15 95 Disk 19 95 See amp Spell Let your computer aid your child in learning to spell CoCo 16K ECB Tape 14 95 Disk 18 95 Teaching Clock Learn totell time withth e aid of a special teaching clock CoCo 16K ECB Tape 16 95 Disk 19 95 Bear s CoCo 32K ECB Tape 19 95 Disk 24 95 Tell them I saw it in HOT Send for FREE Catalog E EDUCATION DIVISION P O BOX 2477 GAITHERSBURG MD 20879 1 800 4TC 4TCE 301 963 3848 Circle Reader Service card June 1985 HOT CoCo 69 TUTORIAL by Frank Tipps N A gt 4022 2 A WV pu gt SS MN 22 J b XXE 22 22665 E ET 5 77 m Buy di 7 s 2 DA j p Test your binary and hexadecimal knowledge with these drills H are a series of drills to help you in binary addition than in decimal addition learn the four logical and mathemati Two simple rules make carrying out to the cal functions that your computer performs next place easy binary OR binary AND binary addition and hexadecimal addition OR and AND Binary OR and AND are logical operations that compare two values bit for bit The out come of OR is true i e equal to one if atleast Table 1 Binary OR and Binary AND one of the inputs is true This means that OR is false ie equal to zero on
243. ram presently in memory Now you can put both programs into memory select the one you want and list it With RAM and ROM your computer becomes an 80K ormore machine Background Type POKE amp HFFD5 O into your 64K computer and it goes into limbo responding only to the reset button because memory lo cation FFD5 selects the alternate bank of RAM But when you Find that hidden memory and make the most of your CoCo select it it is blank and the Basic interpreter does not have its required pointers in low memory so the computer rips off absent mindedly doing its own thing How can the Basic system be made to run in the alternate RAM bank Give it the pointers it needs Before you do this you must look at memory location FFDF which selects memory map 1 When this address is POKEd it deac tivates ROM and activates the alternate RAM bank in place of ROM in the memory That is the RAM becomes the upper 32K of thetotal of 64K in the computer Memory address FFDE reverses this process returning the ma chine to memory map 0 The first machine language subroutine in Listing 1 called by USRO to address 32300 makes use of these two addresses to sequentially load the entire ROM operating sys tem into the alternate RAM bank When the subroutine returns to Basic memory map 1 is in effect and the RAM based operating system is running things You might also have seen this technique before in 64K Modification by Richard
244. ramson the market that produce pie graphs This one won t cost you a penny You furnish the data it calculates percentages and displays the graph on your screen Use a screen dump utlity to get a printout Type in and load Listing 1 The program contains the high speeed POKE 65495 0 which may confuse certain CoCos Delete the POKEs in lines 20 and 780 if a menu doesn t appear when you run the program The opening screen lists seven options 1 Start 2 Save to tape 3 Load from tape 4 Edit 5 Change graph name 6 Change graph comment 7 View graph System Requirements 16K RAM Extended Color Basic Printer optional Screen Dump Program optional the Sky You supply the ingredients your CoCo makes the pie graph To MM NOS Vie Yes s 84 fllustration by Chris Demarest June 1985 HOT CoCo 59 WZ DA e M 7 ToU Table 1 Sample Data Software s Top Ten 1 IBM 110 2 Radio Shack 110 3 Apple Computer 68 4 Microsoft 68 5 Visicorp 52 6 MicroPro 50 7 Digital Reasearch 44 8 Lotus Development 38 9 Ashton Tate 33 10 Peachtree 20 Information from Computers and Elec tronics July 1984 p 14 To submit your data press one and the enter key the screen prompts you for the number of sectors from 1 to 22 At the next prompt type in the eight character sector name and amount for each portion of the graph You are prompted for the graph title and comments
245. rds Difficult You must first convert the D board to an E board Check to see if youhavea L1 or 1 2Color Basic ROM by typing EXEC 41175 If you have the 1 0 version order the updated ROM Radio Shack no The Other Korean CoCo A Different Story U ntil recently upgrading all models of the Color Computer involved among other things replacing the eight mem ory chips with eight 64K by 1 bit dynamic RAM chips usually designated by the number 4164 Around January ofthis year Tandy quietly introduced a new version of the Color Computer 2 with a new catalog number 26 3134A forthe 16K Color Basic model and 26 3136A for the 16K Extended Basic model The A version boards have been extensively redesigned What follows is the 64K upgrade pro cedure for these boards and a technical rundown The Newest 64K Upgrade Tandy now uses 4 bit wide 16K dynamic RAM chips in its CoCo 2 s This means that there are only two RAM chips in the CoCo rather than eight The chips in the current 16K A models are Texas Instruments 4416 chips They are socketed and lo cated more or less in the center of the board On either side of this pair of 18 pin chips is a white female connector This con nector will allow for a plug in satellite board for 64K upgrades But this satellite board would be quite clumsy getting in the way of other hardware add ons e g lowercase kits and video drivers Ed note Apparently Radio Shack is upgrading these latest CoCos b
246. reader service card Pascal Logo Just as humans cate in many different languages your CoCo is ca pable of dialects other than Basic too And the OS 9 operating system promises to make it easier than ever to use those programming languages In July we ll provide overviews on the Pascal C and Logo programming languages All three are gaining in popularity Pascal and Logo in the classroom and C in applications programming Can they be better than Ba sic Read next month s HOT CoCo to find out If you organize data on your CoCo youknowthat sorting is very important in manipulating that data Next month David Meredith explores several different sorting meth ods in All Sorts Of Sorts You can use his routines in your own programs or use his advice in choosing your next database manager Like the feel of a soldering iron Jim Barbarello re turns in July with a new series John B System is an interfacing project with an important angle It can be used as a person assistance system for disabled indi viduals allowing them to control lights and electric ap pliances compose text or dial a phone You can also adapt it for a home security control system CoCo Max Colorware s Macintosh emulator device is turning heads Does it live up to its hoopla See for yourself next month as Scott Norman gives you his impressions and side by side screen dump comparisons of CoCo Max and Macintosh
247. recommends that you type the line 10 A for simplicity June 1985 HOT CoCo 35 Then you can type EXEC and go to work The Workings of Edittron Edittron has two major modes of opera tion The cursor control mode comes up whenyoustart upthe utility You can return to Basic with the shift clear key combination and restart Edittron with the EXEC com mand The commands in this mode move thecursor around a listing You can use them to move in all four directions scroll forward or backward by a screen at a time to home position on the current screen and jump to a line number you specify or the top or bot tom of the code Each cursor control com mand requires a single keystroke except those that control scrolling by screens The utility also gives you auto repeat The search the line command finds the next occurrence of a character in the line on which the cursor is resting currently The find a string command locates any combi nation of eight or fewer characters It starts its search on the line below your current pro gram line and continues through the end of the code You use the find a string command in conjunction with the repeat find com mand a feature found in many word proces Circle Reader Service card 470 Sugar Software Times Utility Rainbow Screen Machine Super Screen Machine Auto Run Semigrat 32K Tim Tun s Mail Bibie Stones Graviter Prickly Pear Software To Preserve Quandic Compie
248. rming cal culations on your data in order to fill out some of thefieldsin a record It is also partic ularly competent at producing complex re ports especially when teamed with its companion routine Pro Color Forms You should be careful when defining the struc ture of a PCF file i e the lengths of fields and the types of data they will contain be cause once you have begun to enter data your options for changing a file s setup are very limited This is true of most CoCo data managers by the way It takes about 50 seconds plus your own reaction time to go from startup to PCF s main menu Human responses come intothe picture because the program cannot be set to automatically load a frequently used data file you must always type the name of the file you want to work with and you must press the enter key a couple of times to indi cate that the correct disk is in the drive This isn t much of a price to pay if you use PCF for prolonged sessions but it can be an noying if you must whip in and out of your data file quickly As it happens my manu script tracking demands this sort of re sponse I often want to just take a quick peek at the status of one particular piece For that reason I hope to have an auto start modifi cation to report to you in the near future In most other respects PCF does a fine job for me It is especially good at finding a rec ord on the basis of fragmentary information since it searches al
249. roduct News section s sup plied by manufacturers HOT CoCo has not tested or re viewed the products discussed here and cannot guarantee manufacturers claims Ass many of us are not yet fully aware of it the Color Computer has a big following among kids students of all ages and educators Tandy recently held a confer ence in Fort Worth TX for many of the Color Computer s educational software vendors to Goldkeys explore the future of the educa tion market The results were positive Almost every month HOT CoCo hears of new educa tional products in the making The first part of the column this month touches on some we ve heard about lately CoCo Educating TCE programs is an educa tional software company on the edge of a breakthrough Its new program series Child s Play was developed to take up the slack in the junior and senior high school markets where edu cators have begun to suspect that real world applications Pick of the Month The first question on our Reader Service card to the right asks you to pick your favorite article or feature in thisissue Write the appropriate letter in the space pro vided on the card Here is the list to choose from A Doctor ASCII Esposito and Ramhoff p 18 B Mindbusters Ramella p 22 C The Computer Room Norman p 24 D In Search of 128K Norman p 30 E 64K Modification Revisited Esposito and Rowe p 40 F Missile Defense McDowell and Diehl p
250. rograms nearly as often as I once expected Not that I lack for possible applications I have more material than ever toorganize It s just that most database man agers the generic term although few CoCo programs live up to its technical definition are designed to handle information that s neatly organized Many are unsatisfactory for quick and dirty inquiries into disorgan ized piles of data what I call the electronic notebook or Now what did I do with that jobs That s unfortunate because I carry around a lot of mental data management bag gage of that variety I could use some help I do a lot of writing so I keep a formal da tabase of manuscript status When did I sub mit each piece and to whom when was it 24 HOT CoCo June 1985 accepted what s the status of the galley proofs when and how much was I paid and so on This is a natural application for a per sonal computer and I use it as a test case for database managers lt provides a good ex cuse for a prolonged trial of a different pro gram every year It s easy to break the data for each manu script or recordin database jargon into a se ries of well defined items or fields This is the kind of organization most commercial pro grams like to see and most of them do a com petent job of managing it Some are much more convenient in everyday use than oth ers however That s important to me My manuscript file gets a lot of use and after a while a program
251. rom 8 4 to 42 24 or 22 32 in CANADA N 6A UW1 U S A vertical mode Use up to 4 defineable window screens of any size Also MINIMUM REQUIREMENT 16K BASIC includes hor izontally scrolling crawling one line screens TAPE 24 95 US or 29 95 CDN Includes positive amp negative screen dumps nn 2 sizes for R S DISK 27 95 US or 32 95 CDN Epson amp Gemini printers Please specify Special Trace Delay can be used to debug programs one line at VISA XE a time even graphics Y U C C C C C 5 Sa special printer control can output characters to the screen Tape to Disk upgrade available for 8US or 1QCON We amp printer simultanecusly postage within LIS amp CANADA on orders over 20 otherwise please add 1 Other countries please add 2 Charge orders A must for all color cemputer owners Once you try it you please add 1 won t write another program without it 74 HOT CoCo June 1985 ing allophones programming sounds shap ing sound envelopes and gaining direct access to the registers It also has eight appen dices including one on sound generator reg isters a command instruction map allophone address tables the chromatic scale and sev eral demonstration programs As a result of this battery of information the manual is at best very technical Non programmers will probably find the reading to be heavy going Most of the manual s sec tions were written for programmers who have a
252. roups the op codes for both theinstruction and its operand or argument 0001 0 00 5 LINE 0002 0 00 8680 LDA 4128 0003 0 02 C620 LDB 32 0004 0 04 8E0480 LDX 480 0005 0E07 A780 LOOP STA 0006 0 09 5 DECB 0007 OEOA 26FB BNE LOOP 0008 OEOC DONE END NO ERRORS FOUND DONE OEOC INIT OEO0 LOOP OEO7 START 0 00 Program Listing 1 Little Old Line Maker On line 0002 LDA 4128 requires 2 bytes The op code for LDA is 86 and 128 is 80 in hex This compound instruction in other words fills 0E00 and 0E01 Line 0003 be gins with address 0 02 The labels function as locatorsfor both the humans and the assembler hence BNE LOOP meansto branch backtothe loop label at 0E07 At the bottom is the symbol table a listing of the labels used and the addresses at which they were located It too tells you that the program loaded at 0 00 and ended at Address correspondence to Victor and James Perotti 163 D Pine Grove Heights Ath ens OH 45701 Tell them I saw it in HOT CoCo Advertisers play a major role in our presentation of HOT CoCo each month Not only have they invested enormous time and effort into their products but they literally make the magazine possible each month Without them there are no magazines like HOT CoCo making life with your CoCo more productive When you order products from our advertisers please mention us It lets them know HOT CoCo is working for
253. s The CCF is either a student or is pursuing a technical or engineering career General business and government jobs are also high on the list More than 75 percent of you fall into one of these four occupational categories Even so occupations still run the gamut from farmers to factory workers to doctors to sales reps People of all sorts are using Color Computers Nobody mentioned publishing does that mean I don t match the profile The CCF is a college man A whopping 56 percent of you have attended college That s especially impressive considering the many readers still in grade school and high school All that education must be doing some good as the income of the average HOT CoCo household stands at 32 400 The Average Color Computer This is a tough one to pin down because it s changing so rapidly What s exceptional today will be the norm tomorrow For instance as Mike points out in this month s Digressions 64K is rapidly giving way to 128K as the standard memory capacity for home computers Indeed almost 70 percent of you already own 64K Color Com puters so there s no place to go but upwards to 128K The 16K crowd still comprises a healthy 23 percent of our readers so rest assured there will still be plenty of 16K goodies in HOT CoCo Extended Basic or Disk Basic can now be found in more than 90 percent of your machines Disk drive ownership is rapidly approaching 50 percent and many of you without disks have plans to purchase o
254. s perseverence and programming ef fort If used by speech handicapped individ ADM Technology Inc AT amp T Technologies Bethel College DuPont Florida International University Mercy Hospital Sonoma Stare University Motorola Inc South wire Company Motorola Comm amp Electronics Inc The John Hopkins University National Video Services Inc The Singer Company University of Wisconsin Madison Union Carbide University of Southern California Niagara College Georgia Pacific Corporation GM Technical Center Hoffmann La Roche Inc Oregon State Universit y RCA Corporation Robertshaw Controls Company US Environmental Protection Agency Indiana University Northwest Rutgers The State University Verbatim Corporation WCVB TV Yeshiva University International Minerals amp Chem Corp Salescaster Displays Corporation Marquette University Seiscor Technologies Inc A Subsidiary of Switeherafi Ine Innovative Products for the CoCo User Call or write today for our FREE Catalog P O Box 813 North Bergen N J 07047 e 201 330 1898 iac June 1985 HOT CoCo 75 w PVICWS mwa uals in conjunction with software that is as yet unavailable it has the potential to be a valuable aid Because it is difficult to understand the Cartridge s monotone speech in phrasesthat are longer than a few words it is unlikely that the Sound Speech Cartridge could per form well as a talking tutor in its present T S
255. s room for invention The 6883 SAM synchronous address multiplexer which handles communications with the computer s memory can assign the same addresses to different sets of chips at different times This bank selection technique is the key to the Color Computer s memory expansion beyond 64K When the Color Computer is first turned on it assigns the lower 32K of addresses to RAM ROMs get 24K of the remainder even with 64K RAM chips installed Color Basic Extended Color Basic and Disk Extended Color Basic or a ROM pack each get 8K The remaining 8K of addressspace is unused except for a small segment assigned to input output devices such as the keyboard joystick ports and so on This memory setup is called Map Type 0 You can also program CoCos with 64K of RAM for Map Type 1 which interprets all addresses with the exception of those vital to I O locations as belonging to RAM The ROMs are effectively switched out of thecircuit although it is possible to copy some of their code to RAM locations if it is needed Map Type I is used by Flex and OS 9 and such popular applications programs as Tele writer 64 DynaCalc and the VIP library Perhaps the most excit ing aspect of Map Type is that it allows the SAM to handle a second bank of 64K The new memory expander kits consist of logic circuits and ad ditional RAM chips This extra memory can be applied in two ways The computer can treat the second bank as independent stor
256. s rough spots will come to my attention like a toothache A recent romp through my databases re minded me of some of the high and low points of this class of software It also refo cused my attention on the problem of hand ling unstructured information I happened to be in the market for a new casual data manager at the same time I d like to share some of my findings with you Please remember that I can only de scribe what I myselflook for in a data man ager 1 am not usually interested in squeezing that largest possible file into my system for example I simply don t use my CoCo for very large databases What do care about includes ease of retrieving a specified record from a file and the ability of a pro gram to produce useful reports I must also be very selective Although a reviewer tends to build up a large software library after a while it s impossible to use everything all the time I concentrated on just three candidates for my manuscript tracking chore and another for my less structured data This means that several very decent programs didn t even make the finals don t take it to heart if your favorite doesn t appear here I have reviewed all but one of the following programs at length in previous issues of this magazine so I feel few qualms about skip ping over the nuts and bolts inorder to get to the details Pro Color File A classact Derringer Software s Pro Color File PCF does a fine job of perfo
257. s the fastest n actual use among the least noisy and it provides the best flexibility in terms of document printing Programming can also produce near letter quality print so convincing that it takes a magnifying glass to reveal the individual dots PC Magazine The D 300 is the only economy class printer with a wide 15 inch carriage we can seriously recommend At 795 the D 300 can t be beat John Dickinson Creative Computing truly versatile dot matrix printer the D 300 from Smith Corona This workhorse is durable enough for heavy duty use in the office its relatively low price keeps it within reach of home users in addition to its excellent text capabilities this printer fuly supports high resolution graphics printing Hot CoCo The Smith Corona D 300 pulls away from its c mpetition as a near letter quality printer find the correspondence print of the D 300 to be the best in its price range SMITH JME EMTH WE RE WRITING THE FUTURE Smith Corona is an operating group of SCMCorporation For more information on this product write to Smith Corona 65 Locust Avenue New Canaan CT 06840 From a review of the following printers Epson FXIO Okidata Microline 83A Panasonic KX P1091 Star Micronics Delta 15 a review of 31 printers tested selling tor under 800 connector Second you could make the whole cable from scratch buying a DIN plug and DB25P connector and using your own wire I
258. s too quickly It is programs that use the computer as a tool to help students deal with the life long process called education Nancy Kipperman is HOT CoCo s Education Editor and an English teacher at Conant High School in Jaffrey NH Write herc o HOT CoCo 80 Pine St Peterborough NH 03458 ees IBM For Your TRS 80 Color Computer Apple Atari Commodore TRS 801 4 amp Color DORSETT EDUCATIONAL SOFTWARE mt 4 PASSES p THE COST EFFICIENCY TEST y CLEAR GRAPHICS For computer assisted instruc 5 NON 55 tion our software more than passes the test it EXCELS With over 1000 educational programs designed specifically to concen trate learning for all users from kindergarten level to advanced in dividual studies from slow learn ers to exceptionally bright stu dents you ll get positive results with our quality economically priced courseware Classroom Koom FROGRAMS OFFER 500 Programs Available for TRS 80 Color 400 tor IBM PC Jr Interactive Tutorial Programs Over 1000 Programs with Full Time Audio Narration Pictures amp Text We re Your Educational Software Source for Grades K 12 and Advanced Studies Course No of Programs Reading 256 Mathematics 128 Comprehension 48 iius Send for a catalog of over 1000 programs for Atari TRS 80 Apple History 32 IBM PC Jr Commodore
259. settings are standard for the CoCo Switch Setting Switch Setting 1 5 ON 2 ON 6 ON 3 OFF 7 OFF 4 ON 8 ON Then carefully make your cable I suggest a solderless high quality connector On the printer side of the cable you will need a DB25 male with pins 6 and 20 jumpered together On the CoCo side of the cable you will need an RS 232C connector with pin 1 carrier detect dropped That leaves three leads to connect to the DB25 First pin 2 on the RS 232C goes to pin 11 Next pin 4 goes to pin on the DB25 Finally pin 3 at the CoCo goes to pin 7 at the printer The docu mentation and technical assistance offered by Okidata are excel lent if you need further help Bobby Ballard Brooklyn NY ssembly nH uswa continued from paqe 79 indicates that you want the X register incre mented by one thereby preparing you for storing A in 481 and so on You need to repeat this routine 32 times so you create a loop that stores A at ever increasing X ad dresses 481 482 483 and so on The loop is controlled by counting down the B register from 32 at the start to zero DECB subtracts 1 from B each time through the loop The BNE instruction means branch to loop if B is not equal to zero Branch Not Equal The looping ends when B becomes zeroafter 32 iterations The first and last lines are really directions to the assembler rather than compilable text START and DONE are labels for single
260. siand 32K Black Sanctum 32K Zookey Typing Tutor Super Bug Super Screen Easy File 32K Disk Accounting System 32K Disk Order Entry System 32k Disk 14 75 17 75 29 75 23 75 2375 19 75 19 75 21 75 19 75 19 75 22 75 22 75 21 75 21 75 Add 3 00 For Disk 4 00 SHIPPING We ll Ship Your Order To Anywhere in The USA For Only 1 00 Send For Our Free Catalog tope We Have Gift Certificates but these are minor shortcomings compared with the advantages the program provides I have been using a personal finance pro gram for several years that stores my pre dictable bills and bank deposits in DATA statements and then plots a graph showing how my checking account balance is likely to look during the next several weeks The program was written back when I was still using cassette storage I ve since transcribed it for disk should rewrite it to take advan tage of disk file techniques but haven t had the time to do so Edittron turned out to be the ideal tool for editing all those DATA state ments When make a monthly payment I use the routine to update the Due Date and shift the Amount Due to whatever I ve pre dicted for my next month s bill Edittron also helps by making it easy to search for names or dates Sideways with Side Wise by Scott L Norman ease of use documentation pertorrmonge error handling e 1 ESRR 4 3 2 1 OVERALL
261. signations refer to the number of bits in the ROM chip They are used to select th different wiring forthe 16K by 8 128K bit ROM chip On the Extended Basic 2A the single 16 pin ROM is soldered directly to the board Although the new SAM saves Tandy the use of one NOR gate on the 74LS02 chip an extra gate is needed to blend together the two chip select lines from the 74LS138 which formerly selected the two separate ROM chips into a single select line for the new single ROM chip Also the new memory chip ar rangement requires the use of another NOR gate on that 741 502 in order to properly work the gate timing on the 74LS623 What about this Basic 1 3 Fortunately the only changes that Tandy made from the 1 2 ROM were in the SAM setup routine and in the copyright notice logo The changes for the SAM tell it how to recognize the new RAM chips Other than that the two ROM versions are identical If you have any questions feel free to contact me on CompuServe s Color SIG Type GO PCS 126 at the prompt and then leave a note addressed to my PPN number 70007 2246 8 holeat this mark just large enough to pass an insulated wire e Prepare a 33 ohm 4 watt 10 percent resistor as follows Cut one lead to 3 8 of an inch and solder it to about 6 inches of insulated wire as used above and cover the solder with spaghetti in sulation or electrical tape Bend the other lead at a 90 degree angle and install it into the hole previousl
262. spent on research cannot x Compatible with R S Apple etc be recovered if the investor abandons the SUNLOCK SYSTEMS We accept project 210 Connor Rd MasterCard For more details on investment planning Mechanicsville Va 23111 Visa and COOs using the NPV IRR model refer to Survey of Accounting by Gary L Schugart et al ADDITIONAL PRINTER SPECIALS Houston T X Dame Publications 1982 Epson Okidata Comrex 11 389 Cltoh 8510 329 and Principles of Financial Management by RX80 239 ML82 299 Comrex III 629 Citoh 10 899 Van Horne Englewood Cliffs NJ Prentice 299 ML83 519 Gemini 10X 269 Cltoh 1550 519 Hall 1974 RX100 399 ML84 649 Gem PrType 329 Okimate 20 149 FX80 429 192 369 Gem Radx10 519 Sv Reed 550 449 See program listing on page 51 FX100 599 ML93 579 Gemini 15x 379 LO 1500 1039 JX 80 579 ML182 229 Sv Reed 500 379 Zen Monitor 99 Address correspondence to Dev Chakra TO ORDER CALL TOLL FREE 800 368 9191 varty c o Marshall G Rothen Motorola Inc In Virginia call 804 746 1600 725 South Madison Drive Tempe AZ 85281 Tell them 4 saw it in HOT June 1985 HOT CoCo 65 TUTORIAL by Peter H Stoloff Fabulous Fonts for the Gemini IOX Te new printers for the Color Computer are very special because they allow creativity With the Gemini 10X for exam ple adownloadable character set lets you de sign 96 characters by programming the printer with a dot configuration
263. st price was 589 when it was Offered through Keytronics Our price on it Is only 69 plus 3 for shipping HARD DRIVE SPECIALIST Ordering Information Use our Watts line to place your order via Visa MasterCard or Wire Transfer Or mail your payment directly to us Any non certified funds will be held until proper clearance is made COD orders are accepted as well as purchase orders from government agencies Most items are shipped off the shelf with the exception of hard drive products that are custom built UPS ground is our standard means of shipping unless otherw isespecified Shipping costs are available upon request Circle Reader Service card 4455 1 713 480 6000 Order Line 1 800 231 6671 16208 Hickory Knoll Houston Texas 77059 Continued from p 41 16K to 32K Piqqyback Moderate This upgrade applies to all CoCos but note that the CoCo 2 uses different chips If you shop you can get a set of 64K RAM chips for under 30 so this upgrade makes sense only if you received the 16K chips free This modification requires soldering preferably with the memory chips outside of your machine The original CoCos require 4116 dynamic RAM chips and the CoCo 2requires 2118 dynamie RAMs Open the CoCo To be on the safe side firstremove the original RAM chips and replace them with the ones you plan to piggyback If they prove to be good proceed as follows Place the original chips in a piece of conductive foam in approximately the same co
264. stage at Peterborough NH and edditional mailing offices Canadian 2nd Class reg 9564 Nationally by bitemations Circulation Distributors Foreign subscriptions surface 44 97 one yesr only U S funds drawn on a U S bank Foreign subscriptions air mail please inquire in South Africa contact HOT CoCo Box 762815 Sandton South Africa 2146 All subscription correspondence should be otkirexsed to HOT CoCo Subscription Deparmern P O Box 975 Farmingdale NY 11737 Please include your address label with any corresponder Postmaster Send ed ress changes to HOT CoCo Subscription Services P O Box 975 Farmingdale NY 11737 Send Canadian change of eddress to HOT CoCo Box 1051 Fort Erie Onterio Canade 2 5 8 Return postage guaranteed Entire contents copyright 1985 by CW Communications Peterborough Inc For questions concerning your eubscripfion and to placa subscription orders please call us tofl free st 1 400 545 9559 between 9 a m and 5 p m or write to HOT CoCo Subscription Department Box 975 Fermingdale NY 11737 June 1985 HOT CoCo 5 DIGRESSIONS Our Second Anniversary And A Look At Past And Present issue marks HOT CoCo s second anniversary It s been an exciting two years We ve seen several major revisions to the Color Computer including the 64K Color Computer the CoCo 2 and the Korean built models We ve also seen the TDP 100 MC 10 and Tano Dragon come an
265. t connect modem for Bell 212A compatible synchronous or asynchronous operation See Them Today Stop by your nearby Radio Shack Computer Center partici pating store or dealer for a first hand look at our modems C of touch again Circle Reader Service card 4 Radio fhaek The Technology Store A DIVISION OF TANDY CORPORATION Send Me a Free Copy of Your 1985 Computer Catalog Mail To Radio Shack Dept 85 339 300 One Tandy Center Fort Worth de 76102 Name Address City State Telephone Sale begins May 1 ends 31 1985 Prices apply at Radio Shack Computer Centers and at participating Radio Shack stores and dealers modems FCC registered Use modems only with Bell compatible equipment Oirect connect mo dems are not for multi line use without optional extra controller VIP Library VIP Desktop Magic Finally you can have the power and integration of Lotus Symphony 1 2 3 or Open Access for the larger micros on your Color Computer The convenience of instant changes to a new application and effortless transfer of files is at the tip of your finger With VIP Desktop the six applications of VIP Libraryare integrated into one program on one disk You have instant access to word processing with a spelling checker always in attendance data management with mail merge spreadsheet financial analysis tele communicat
266. t by 64K RAMs The new SAM will work with older CoCos but the old SAM will not work with the 2A CoCos The new SAM also has extra circuitry so that it can support a full 64K RAM 32K ROM CoCo without the extra NOR gate _ added externally to all older CoCos There is a new buffer chip between the memory and CPU Older CoCo used 74LS244 octal buffer the 2A uses TI 74LS623octal transceiver chip It servesa similar function The 2A s ROM hardware is much changed It has one 28 pin socket for the on board ROM operating system On the Color AXX3052 With the correct ROM version in the computer or in hand open the CoCo Disconnect the power supply from the PC board It has five plug in leads Remove the 10 Phillips head screws that hold the PC board Then pop the 16 metal fasteners that protrude through the board Remove the board from its base Now follow these steps in order Remove the eight RAM chips U20 through U27 These will be la beled 4027 if you have 4K or 4116 if you have 16K If vou have already performed the piggyback modification remove the wire from the SAM s pin 35 Remove the 6883 SAM chip 1 10 exercising great care since it is highly susceptible to static discharge Turn the PC board over so that you are looking at the foil side Referring to Fig 3 cut the following lands the 5 volt land at label A the 5 volt land at label B and the 12 volt land at label C Make the cuts cleanly and about 1 16
267. t used a soldering iron in elec tronics projects before you should find someone to help you You ll find that an ex tra pair of hands can be a real help Most of the soldering for TV Buff IIc s in stallation is done on the VDG video display generator part number MC6847P chip which you could damage accidentally if you are careless The other items that you must solder are the output jacks and a ground point on the computer s circuit board The instructions tell you to solder seven of the nine wires to the VDG one to the output jack and one to a ground point For a permanent sound installation you need to solder a ca pacitor between chip U3 and an output jack 34 HOT CoCo June 1985 The instructions direct you to remove the VDG chip from its socket before you start sol dering This works fine for the earlier pro duction models of the CoCo and CoCo 2 but might not be possible with newer versions some of which have most of their compo nents soldered into place Green Mountain Micro needs to update TV Buff IIc s docu mentation to cover this possibilit y The last step in setting up TV Buffllc is to run the output lead or leads outside the CoCo s case The way you accomplish this depends for the most part on the size of the wires and jacks you select I filed a small notch in the top of the computer s cover But another method calls for a small diameter wire that you squeeze through the existing notch for the TV jack Docum
268. tant Correction Wrong Number HOT CoCo s BBS Phone Book April 1985 p 48 contained three incorrect phone numbers The numbers for the Samoht BBS in Reston VA the Careers BBS in Dallas TX and Colorama of El Paso are incorrect Please do notcall these number s eds Sunnyvale CA The Computer Literacy Bookshop Net work offers customers access to its catalog during off hours Monday through Friday from 8 30 p m to 9 next a m and Saturday and Sunday 6 30 p m to 9 30 next a m To access the network dial 408 730 9959 press two carriage returns type the word books and type R Conference to view the main topics Once you are logged on type Read Help Complete for further instructions Computer Literacy Bookshop 520 Lawrence Expressway Suite 310 Sunnyvale CA 94086 NY NY Update Our BBS Grand Central Terminal now supports both 300 and 1 200 baud users As always we are up 24 hours a day 7 days a week at 212 682 0681 Our thanks to HOT CoCo readers for their contributions uploads and support Steve Schechter New York NY Tampa Bay Area FL Compunet BBS of St Petersburg FL is open to all callers 24 hours a day 7 daysa week It features downloading uploading text files trivia worldwide news and weather and more You can reach the board 300 1 200 baud at 813 321 0397 Emery Mandel St Petersburg FL Circla Reader Service card 121 the Color Tell them 441 saw it in HOT CoC
269. tended Basic w bk 39 95 26 1276 DMP 105 Printer 80 cps 179 95 The level of difficulty for this modification depends on whether the 64K DEI Memory Upg 49 95 ton 8510 Printer 120cps 399 95 chips are socketed or soldered If the 16K chips are not socketed you 26 3029 Drive 0 275 95 Itoh 7500 Printer 5249 95 must remove the PC board from the machine and desolder the chips 26 3023 CoCo Drive 1 229 95 Gorilla NAP Video Monitor Grn 109 95 lacing th ith IC sockets with thei tch inting in th HJL Keyboard D E F 2 79 95 Video Monitor Adapters 29 95 replacing tem Wi eir notches pointing in the same Super Pro Keybd 0 64 95 26 3024 RS Multi Pac Interface 89 95 direction as those on the chips Note Desoldering is difficult and not 26 3127 64K Extended CoCo2 179 95 Botek Ser Par Interface 69 95 for amateurs 26 3134 16K Standard CoCo 89 95 CGP 220 Ink Jet Printer 379 95 i i i 26 3136 16K Extended CoCo2 129 95 DMP 110 Printer 349 95 The etant Le dynamic RAMSQre located in two placesia group 26 3802 Model 100 24K 449 95 26 1278 DWP 220 Printer 539 95 three and a group of five Solder a wire connecting the two solder pads 26 3816P 8K UpgradeModel 100 55 95 26 3860 Model 200 899 95 inside the box marked 64K Install the new 4164 RAM chips in the 26 1192 CGP 115 Printer Plotler 119 95 sockets aligning the notches Reassemble your computer ACCESSORIES Testing Your Handywork Volksmodem 1200 299
270. that you add to your CoCo in order to use a color or mono chrome composite video monitor The mon itor adapter is designed to intercept the video signal generated by the computer before it is converted to the RF radio frequency signal used by a television The product lets you connect a monitor to your CoCo for a clean interference free picture that is far superior to its TV counterpart Buff IIc is made up of a small circuit board with eight color coded wires and a ground wire The circuit board has double stick tape on its bottom to make mounting thecard inside the computer easy Although its advertising doesn t mention it TV Buff requires you to solder its wires to compo nents inside the computer You must also ob tain a connector most CoCos need a female phone plug such as Radio Shack part num ber 274 337 and solder it to one of the wires If you decide to install sound you ll need a second jack You can set TV Buff IIc to use either a monochrome or a color monitor when you install it but it can t be set for both at the same time The video driver does allow si multaneous use of the TV and monitor out puts You can get sound with TV Buff ilc through the cassette port or by hardwiring it for permanent installation Set Up The installation procedure for this video driver is not complicated However because it requires soldering to components inside the Color Computer you must be careful If you have no
271. the UK s Computer Mansgement and Computer Business Europe United States Camputerwor CoCo inCider InfoWorta MacWorld Micro MarkatWortd PC World Jr Wortd RUN 73 Magazine and 60 Micro 6 HOT CoCo June 1985 Publisher JEFF DETRAY Editor in Chief MICHAEL E NADEAU Managing Editor MARK E REYNOLDS Review New Products Editor J SCOT FINNIE Cogy Editor MARILYN G MCMASTER Education Edltor NANCY KIPPERMAN Technical Editors PETER PAPLASKAS GUIER WRIGHT KEITH JOHNSON INSTANT Editorial Administration KIM McCORMICK Art Director DONNA WOHLFARTH Production Supervisor ANNE FLEMING Production Assistant SANDRA DUKETTE Advertising Director PETER MONTROSS Advertising Coordinator SUSAN WRIGHT 80 Pine Street Peterborough NH 03458 1 800 441 4403 or 1 603 924 9471 Manufacturing Manager SUSAN GROSS Typesetting Manager DENNIS CHRISTENSEN Film Preparation Manager ROBERT M VILLENEUVE Darkroom Manager NATHANIEL HAYNES Chairman of the Board JAMES S POVEC President General Manager DEBRA WETHERBEE Vice President Finance ROGER MURPHY Assistant to President GM MATT SMITH Assistant to Vice President Finance DOMINIQUE SMITH Executive Creative Director CHRISTINE DESTREMPES Director of Circulation WILLIAM P HOWARD Assistant Circulation Manager FRANK S SMITH Direct amp Newsstand Sales Manager RAINO WIREIN 1 800 343 0728 Director of Credit Sales and Co
272. the two parts of the address 04 and 00 and treats them as a 16 bit address Finally the SWI instruction ends the execution of this little program The First Little Program Now we ll show you how to write a small program in the editor assemble it and run it The program will put a line on the screen so you can easily tell whether or not the pro gram worked Again think of the screen block of memory 0400 to 0600 Whatever you store there will be printed on the screen The Color Computer screen displays 16 lines of text thinking in hex the lines begin with 400 420 440 480 and so on Type the following program into the editor If you are using EDTASM omit the first line START NAM LINE change END in the last line to SWI and add a final line END typed under the second column START NAM LINE INIT LDA 4128 128ISBLACK BLOCK LDB 32 COUNTS 32 CHRS PER LINE LDX 480 POINTSTO START OF 4TH LINE LOOP STA X PUTSBLOCKON SCREEN LINE DECB DECREMENT B 1 BNE LOOP YET ZERO LOOP DONE END RESET PC TO START OF PGRM Putting a Black Line on the Screen This program prints CHR 128 a black blob 32 times making a black line across the screen Accumulator A will load and then store the black blob Accumulator B will be used to count from 32 to zero so that a full line 32 characters of blobs will be displayed The X register will point to the address in screen memory 48
273. them But don t stop there You ve got a flex ible printer that will let you put your creativ ity to the test so have fun 07 78 01 00 7E 00 01 7E 00 7F 00 7D 02 OC 30 00 7F 00 3C 42 3D 40 01 40 01 7E 00 7F 00 7F 00 09 00 09 06 00 42 3D 40 09 50 21 00 7F 00 7F 00 09 10 29 46 00 46 09 40 09 70 09 32 00 00 00 01 7C 01 7E 01 00 03 00 Character Q m D O D gt Column C0 C1 C2 C3 C4 C5 C6 C7 C8 78 00 76 09 00 09 06 78 00 7F 00 7F 00 49 14 47 70 00 7F 00 7F 00 41 02 41 22 00 7F 00 7F 00 41 00 41 3E 00 7F 00 7F 00 49 00 49 00 00 7F 00 7F 00 09 00 09 00 00 7F 00 7F 00 41 08 41 38 00 7F 00 77 08 00 08 00 7F 00 00 00 7D OO 7F 00 00 00 00 30 40 00 40 00 7F 00 7F 00 00 74 0A01 08 11 60 00 7F 00 7E 00 40 00 40 20 00 3F 40 00 40 00 7F 00 7F 00 1 00 1E 20 40 20 10 OF 00 07 78 40 3F 40 00 40 3F 00 01 66 14 08 00 6B 14 63 00 O1 06 04 08 70 OF 00 OF 00 41 20 51 28 55 0A 45 00 00 Table 2 Futuristic Character Set ta lt gt x g lt c m me o O z See program ltsting on page 52 Fabulous Fonts is available on the Instant CoCo cassette see p 64 for details However the author will provide the program and any new fonts he s created for 6 and a disk or cas sette with a double stamped self addressed mailer Write to Peter Stoloff 9203 Custer Ter race Adelphi MD 20783 Your Choice Silver or White Circle Reader Service card 11 THE COMPUTER CENTER 230955 Drive 0 SUPER
274. ther end of the wire to pin 6 of the same chip Replace the chips in their sockets Solder a piece of wire from pin 5 of the 74LS138 to pin 4 of the 74SL02 Locate and cut a length or wire that will reach from pin 5 of the 741 502 to June 1985 HOT CoCo 55 It s time we put a Solder one end of the wire to pin 5 and wire wrap the other end our chips Recheck your wiring and look any shorts especially between h the 74LS02 and the shield on e ea Reassemble your machine gt 16K to 64K 285 a k a F Board Easy If you have a 32K F board you need only the 64K Enable software described later in this article If your F board has 16K remove capac itors C58 C60 C62 C64 C66 C68 C70 and C72 with a pair of diagonal cutters Replace your 16K chips with 4164 dynamic RAMs and set the jumpers to the 64K position You must add another jumper at a location clearly marked 64K 16K to 64K U S A made CoCo 2 Moderate Open your machine noting that there are six screws Remove the 16K chipsfrom the sockets labeled U 14 to U21 Solder a wire connecting the two solder pads to the right of W1 which is located diagonally and showed you our best between U6 07 Install the new 4164 RAM chips in sockets U14 to deals on computer hardware U21 aligning the notches Reassemble the machine 16K to 64K Type 1 Korean CoCo 2 HARDWARE SPECIALS Moderate Difficult Ex
275. till available in limited quantities 1983 magazines needed for documentation For faster service cal TOLL FREE 1 800 258 5473 In NH dial 1 924 9471 Tandy Color Computer is a registered trademark of Radio Shack a divison of Tandy Corp e o ee UU U M M ee ee oe YES Send me 29 first class programs on a Best of 84 cassette for just 16 47 want a copy of Best of 83 for 16 47 Payment Enclosed AE MC VMSA Card Exp Date Signature Name Address City State ZD instant CoCo 80 Pine Street Peterborough NH 03458 Reader Forum Border Pizzazz Program Listing 1 Border Pizzazz prints a moving border for the title pages of your programs The short 12 line program uses a fast machine language routine to perform the task The machine language part is written in position independent code so you can store it anywhere in memory Be sure to change the CLEAR statement if you change the start ing address The delay loop in line 70 controls the moving rate of the border Change this if you want to alter the speedat which the border moves The DATA statement in line 110 contains the graphics block characters ASCII value used to make the border Change the first three values not the BF to a different hex number and a new style border is printed Astute watchers will notice an optical i
276. tle time getting to know how to use it T S Edit is manufactured by Tandy Corp Catalog No 26 3264 14000ne Tandy Center Fort Worth TX 76102 The program requires a disk drive 32K for Radio Shack DOS and 64K for OS 9 It sells for 34 95 VISA MC Accepted 4 VISA SS 5 h Printers Atari Atari amp C 64 PRINTE RS CR 285 00 MODEMS Indus GT 259 00 Koala Pads 4995 Star Micronics 8510 BC2 389 00 MPP 1000C 1050 16995 wico ipm heat ey ee 8510 BP1 339 00 99 74 Commodore Bat Handler Joy Stick 16 95 Bl 10x 2222 33500 pille 52 gt 79 95 2 Indus GT 255 00 3 Way Deluxe 21 95 B Delta 15 coris 445 00 n 429 w Software B 23500 Boss 1395 Raai 10 A D fm dide MSD Drives SOFTWARE Radix 15 585 00 1550 BCD 2 529 00 199 00 S ngle MSD 1 309 00 1010 Recorders 45 00 Powertype 309 00 1550P 485 00 H 1200 469 00 Dual MSD 2 485 00 Atan Key Pads 2900 Legend 465 00 ACA 265 00 Blue Writer 39 95 bip They s belts 220 00 F10 40 P S AA AA 24 d ompatible Batteries Included 1080 F10 55 P S 64 Disk Drive Paper Clip w Spell PK 69 95 120075 ens iniret ie 250 00 F10 Tractor MONITORS ouble Density 22500 PaperChp 59 00 Atari F10 Sheet Feeder 349 00 Zenith ISKETTES Home Pack 32 95 102055 sss
277. to compute NPV and of fers you the option of seeing firsthand the eroding value of money by watching the NPV calculations run Internal Rate of Return NPV alone does not give a complete finan cial picture of a prospective investment Banks and financial institutions in particu lar like to evaluate the internal rate of return IRR the minimum discount rate that yields a positive NPV IRR is the profitability in per centage points after taking into account the eroding value of money The higher the IRR the more lucrative the project is The main advantage of using IRR is that the investor does not have to worry about com puting the discount rate as he would with June 1985 HOT 63 We want to give you something that HOT CoCo can t That s right instant CoCo will now include apreviouslyunpublished BONUS PROGRAM on each monthly cassette FREE The NEW AND IMPROVED instant CoCo More than just another magazine loader Each free program is our way of making sure you get state of the art software You ll find variety and excitement every month Everything from great games to help ful utilities Commercial quallty programs that would cost up to 50 if purchased sepa rately in any leading software store Since the bonus programs have never appeared in HOT CoCo due to their length all necessary documentation will be specially provided with each cassette YES I want a FREE program e with every cassette
278. top or sides of the spreadsheet When this is done print out the form and inspect the data and formulas You might find errors on paper that you missed on the screen such as a slash instead of a one or a summation that starts a few cells too low or continues a few cells too far Itisimportant that your spreadsheet equa tions are correct and that you have properly transcribed all the questionnaire data Errors are unacceptable because they might alter theconclusion of an analysis Someone s job or a corporation s budget could be ruined by a simple error of omission Policy It is important to maintain discretion with a statistical data compilation business Data you receive from your customers often represent information collected in confi dence Never mention previous or current clients without written consent or reveal any of their data even to prospective cus tomers Some clients might ask you to sign a nondisclosure agreement or a confidentiality paper Most states don t consider these le gally binding but it is the gesture that mat ters For a highly confidential job a long term position or one involving large amounts of money your client might ask that you be bonded a form of insurance that guarantees your reliability and integrity If your prospective client foots the bill for bond ing you should accept it Being bonded will open the door to other similar and possibly lucrative jobs Part of maintaining confidentia
279. trademark of Tandy Corp 80 is a trademark of Epson America Doctor ASCII bu Richard E Esposito and Jesse W Jackson Having technical difficulties Consult the Doctor for an an swer Due to the volume of mail Doctor ASCII receives we cannot guarantee that your query will be published Please send a self addressed stamped envelope with all letters to Doctor ASCII c o HOT CoCo 80 Pine St Peter borough NH 03458 Occasionally after turning on my 16K CoCo 2 from a cold sstart the computer freezes after a minute or two and the screen fills with garbage The only way I can regain control is to reset the computer or turn it off and back on again How can I rem edy this frustrating situation Wayne Hubert Duluth MN Sounds like a bad connection Check that your memory chips sare firmly seated and that thereare no bent pins Also discon nect any peripherals you have attached and try to isolate the prob lem by plugging them back in one at a time Q I want to add a pilot light to my 64K CoCo 2 a red LED with 470 resistor Where do I safely tap into the 5 volt supply Also I sometimes lose control of my computer whether it is hot or cold The keyboard does not respond and the reset button does not work Garbage appears in two vertical columns under the PRINT 2 locations 1 and 10 What s the problem Paul Hache Amos PQ A Looking from the front of the CoCo 2 the 5 volt is in the upper sleft corn
280. ts most complex chords have only three notes and you can t generate si multaneous chords and harmony There is also no easy way to create echo and rever beration standard functions of many music synthesizers What the Sound Speech Cartridge can do is produce sound effects All of the pops whistles explosions gunshots and other noises commonly used in games are not only possible but in many cases sound much bet terthan their software created counterparts Documentation The Sound Speech Cartridge comes with a comprehensive 56 page manual that includes sections on programming text to speech us The Sound Speech Cartridge from Radio Shack Circle Reader Service card 91 E DOCERE RE RERO SE e o a ee oe s e o o e e e o s s s s o a a a p s 2 4 FN COLOR CHARACTER GENERATOR ZW RAINBOW RAINBOW Mc e NEW DIMENSION IN COLOR COMPUTING erge Stat Stat includes a character generator and sample graphic space game at no extra cost INGENTIVE SOFTWARE Full 224 text and graphic characters Underline in all PMODES Prints vertically 519 681 0133 All machine language user transparent Supports ali BASIC EXTENDED BASIC and DISk commands Automat ic loader recognizes 16k 32h amp 64K computers a gp E E up to 5 character sizes 4 colors all on one screen A LONDON ONTARIO MICHIGAN 48301 totalof 10 sizes available f
281. tuer doesn t channel or limit our imagi nation it will remain so Eric White Back in Orbit Blast Although the author s original was fine a bit drop error occurred in R Dewain Poe s program World Map Orbital Observa tions HOT CoCo April 1985 p 30 Hereare the corrected lines 660 DRAW M13f 96 M126 96 M122 92 122 87 124 84 132 84 134 89 M134 83 M136 77 M136 73 M144 65 2 146 65 146 67 88 3 98 32 98 32 1 3 1 1 3 1 3 28 1 2 28 1 3 98 3 99 6 6 32 1 3 34 1 4 3 1 6 3 1 8 34 1 6 34 11 32 11 32 1 8 3 1 8 ISLANDS 93 DRAW BM62 153 M66 157 M6f 16 5 56 163 62 157 62 153 6 163 6 6 ZEALAND 1 184 45 186 5 186 56 182 56 182 53 184 52 184 5 182 47 184 45 184 48 T 184 55 6 6 DRAW BM178 54 M178 5 18 5 18 53 1 78 54 BRI TISH IS eds And now a word from the author I have received letters and calls on my World Mapand Satellite Tracking Programs HOT CoCo April 1985 p 31 The system requirements specified Extended Color Ba sic but some people are trying to use the pro grams with Disk Basic They get an SN error because AS is a reserved field command in Disk Basic Change the variable AS in lines 260 300 of Satellite Tracking to AZ to solve this problem There
282. ultiple copies you can edit to get a complete document End your phone session as usual and get readytosaveyour work First pressthe reset button on the back of the computer The Ba sic header appears again but don t worry This program is available on our Instant CoCo cassette 5 BUFFTEXT C 85 BOBBY BALLARD 19 SR START OF RAM ER END RAM S P SCREEN POSITION 20 PV PRINTER ASCII VALUE CC CH ARACTER COUNT 30 SR amp H69 ER amp H3FFF TP g 49 CLS PRINT 43 buff tex 5 RS INKEYS IF RS THEN 50 69 FOR SP 1924 TO 1503 STEP 1 70 POKE SP PEEK SR POKE SP 1 amp H TE 89 SR SR 1L NEXT SP TP TP 1 99 PRINT0482 CONT pRINT SAVE TP TP 19g RS INKEYS IF R THEN 100 119 IF R C THEN CLS GOTO 69 120 IF RS P THEN GOSUB 519 138 IF RS S THEN GOSUB 619 140 GOTO 99 500 PRINT TO PAPER 510 FOR 5 1024 1593 STEP 32 FOR CC 2 TO 31 520 P PEEK SP CC AND 127 GOSUB 1004 539 PRINT4 2 CHRS P NEXT CC PR 2 SP 548 RETURN 69g ASCII SAVE TO TAPE 618 CLS LINEINPUT STARTING PAG 255 629 LINEINPUT ENDING PAGE ES 630 LINEINPUT FILENAME 8 FS 648 PRINT 325 READY TAPE PRESS ENTER 650 RSsINKEYS IF R THEN659 669 CLS PRINT 45 saving PRINT 678 PS VAL SS PE VAL ES MS 153 6 PS 1 489 689 IF 1 THEN 2915 ELSE ME 2915 PE 489 690 x g v g 700 OPEN O 4 1 FS 71 Y 8 MS MS X X 9 SVS FOR L MS TO 5 31 1 728 P PEEK
283. une 1985 2 upgrade information The D E and F or 285 boards apply only to the original grey CoCos Radio Shack has changed the CoCo 2 s model number with each board change See the table below 16K Standard 16K Extended 64K Extended Basic Basic Basic 26 3026 26 3027 26 3127 Original 26 3134 26 3136 1 2 26 3134A 26 3136A 1 2 3 1 Made in Korea 2 New keyboard design 3 Uses two TMS4416 16K by 4 RAMs instead of eight 16K by 1 s New SAM chip with 256 cycle refresh instead of the previous 128 cycle version Color Basic 1 3 Extended Basic version uses one 16K ROM instead of the previous version s two 8K ROMs To order a technical manual for any Radio Shack product just prefix that product s catalog number with TM e g TM 26 3003 RGB monitors are generally more expensive and the low resolu tion ofthe CoCo s 6847 VDG video display generator doesn t justify the extra cost A TV set is adequate except in cases where rfi radio frequency interference is a problem Write our advertisers for catalogs and information on overseas orders If there is a Radio Shack store near you ask them about their Express Order service I have never been able to get my C Itoh 1550B dot matrix sprinter to work with my Color Computer I ve been told that my problem is getting the correct hookup between the printer s se rial port and the CoCo s Can you tell me how to do this I have a Radio Shack cable that is supposed to work
284. uphold in position keep from failing etc 2 To bear or sustain weight etc S To keep from failing strengthen PBJ Inc supports their product line with technical personnel that are always there to help you amp To serve to uphold or corroborate a statement theory etc substantiate verify PBJ Inc receives testimonials on a daily basis that support their product line 8 To provide a person institution with maintenance provide for PBJ Inc supports the CoCo user by consistently creating new advancements in their field Synonym PBJ INC circie Reader Service card 214 A long description indeed yet very applicable to the kind of service delivered by PBJ Inc When the serious CoCo user needs back up support technical information or assistance PBJ Inc is there From the products they manufacture through to the strategic solutions they offer PBJ Inc has rightfully gained the reputation of company with fhe most support for the Color Computer 09 inc Innovative Products for the CoCo User Call or write today for our FREE Catalog P O Box 813 North Bergen N J 07047 201 330 1898 trom Funt amp Woenulle Interriationgl Du tena 14 HOT CoCo June 1985 Blackjack Dealer Feeler Dealer These two programs help you develop your Blackjack skill and strategy In Blackjack Dealer the computer deals the cards and plays the hand against you Feeler De
285. urself chasing the cursor around the screen at first until you memorize the key combinations you need T S Edit has options for screen color and display format that you can change at any point in the editing process I found black characters on a green background in the 40 column by 24 line display mode to be the best format in which to work These are the only parameters that you can change during the actual editing process you have to change all others such as printer baud rate before entering the editor Circle Reader Service card 175 WHITE HOUSE Box 4025 Williamsport 17701 717 322 7700 HOURS Monday Friday 9 am 6 00 pm Saturday 9 00 ain 3 00 pm COMPUTER DISK DRIVES Koala T S Edit offers several powerful features including global search and replace yank which lets you copy text to another place in the file without erasing the original and undo features It also has a feature for stack ing files in the edit buffer which lets you se lect several files in advance and edit them one at a time Once you accomplish an edit ing task T S Edit rewrites all the changes to the file under the original name A nice feature of the OS 9 version of T SEdit 15 that you can call a shellcommand from the edit mode meaning that you can accessa di rectory for example from the editor and re turn to the editing process immediately fol lowing the execution of the command And you can exit the
286. ury VT 05669 802 485 6112 It sells for 19 95 plus 2 50 for shipping On Color Computer Graphics by Richard Ramella organization production quality thoroughness readability N G OVERALL RATING 5 Books B ill Barden author of Color Computer Graph ics is the Color Computers premier pro gramming writer When he shares his knowlewdge beginners and experts alike learn new progranvning methods for the CoCo Color Computer Graphics upholds this tradition rec ommend it to Color and Extended Color Basic pro grammers working at any level Color Computer Graphics provides the beginner with graphics essentials in sections that improve the Color Computer s manuals It lures the ad vanced programmer into experimentation The best aspect of the work is its numerous short list ings which provide illustrative results after just a few moments of typing The effect for those who work throught the text in a thoughtful and open minded manner is a transformation from begin ner into technical expert Barden s writing style is light hearted and informative His humor is disarmingly Meet Edittron by Scott L Norman ease of use documentation performance error hondling 1 gt OVERALL RATING 4 50 Application Software takes only a little program writing and debugging to make a believer out of you Extended Color Basic s built in line editor isn t
287. vel bounce proof keyswitches the HJL 57 has shielding that eliminates irritating noise on displays and four user definable function keys one latchable specially positioned to avoid Inadvertent actuation Free Function Key Program Your HJL 57 kit Includes usage instructions and decimal codes produced by the function keys plus a free sample program that defines the function keys as follows F1 Screen dump to printer F2 Repeat key latching Lower case upper case flip if you have lower case capability F4 Control key subtracts 64 from the ASCII value of any key pressed Runs on disc or tape extended or standard Basic Compare Installation Carefully engineered for easy Installation the HJL 57 requires no soldering drilling or gluing Simply plug In and drop right on the original CoCo mounting posts Kit includes a Ordering information Specify model Original F version or CoCo 2 Payment by C O D check MasterCard or Visa Credit card customers include complete card number and expiration date Add 2 00 for shipping 3 50 for Canada New York state residents add 7 sales tax Dealer Inquiries Invited Circle Reader Service card 440 new bezel for a totally finished conversion Compare Warranties The HJL 57 Is bullt so well it carries a full one year warranty And it is sold with an exclusive 15 day money back guarantee Compare Value You know that a b
288. video modification then you know that you have to mutilate the 741 502 and 74LS138 or the VDG to achieve them If you re careful and lucky the IC pins bend up and out of the way just fine Unfortu nately when I made the changes the pins on the 74LS02 and 18V Q3 PIN 12 390a ue TORF RS CIRCUIT MQDULATOR R44 18K R45 R46 470 REVISED CIRCUIT d 7 5 Fig 1 Composite Video Amplifier Showing Clock Injection Revisions June 1985 HOT CoCo 81 Circle Reader Service card 4507 DYNAMITE THE CODE BUSTER disassembles any 6809 or 6800 machine code program Into beautiful source e Learn to program like the experts e Adapt existing programs to your needs e Convert your 6800 programs to 6809 e Automatic LABEL generation Allows specifying FCB s FCC s FDB s etc e Constants input from DISK or CONSOLE e Automatically uses system variable NAMES e Output to console printer or disk file Available for popular 6809 operating systems FLEX 100 per copy specify 5 or 8 diskette OS 9 150 per copy specify S or 8 diskette UniFLEX 5300 per 8 diskette only For a free sample disassembly that ll convince you DYNAMITE is the world s best disassembler send us your name address and the name of your operating system 8 9 VERSION 59 95 DISASSEMBLES OS 9 FLEX DOS FILES Order your DYNAMITE today
289. w the simple direc tions Zookey could be instrumental in teach ing you how to type But some of the game s built in temptations could work against good typing instruction Learning with Zookey de pends on the willpower of the user Zookey s screen is divided into eight col umns each of which has a caged animal at its top The program displays letters num bers or symbols along the bottom of the screen In the middle of the screen there is a trap door through which the animals at the top try to escape on a random basis You stop them from escaping by pressing the key that corresponds to the letter number or symbol at the bottom If you press the correct char 72 HOT CoCo June 1985 acter in time a little zookeeper rushes to the trap door and locks it If you don t press the right key in time the animal gets away The game ends if five animals escape Zookey lets you choose the kinds of char acters that appear at the bottom of the screen You might want to work on numbers instead of letters for example The tutorial also lets you choose speed and skill levels You can make selections for each of these categories on a scale of 1 to 8 If you choose 1 for both categories Zookey is a mild typ ing tutorial game Selecting 8 for both cate gories makes even skilled typists wonder about their abilities The speed category de termines how fast the animals descend to the trap door The skill category controls the number of animals
290. when you press the break key sound when you have completed the puzzle To see your score type PRINT LEN S and press theen ter key To see the string of all your moves by compass direction type PRINT S and press the enter key Puzzle Contest Il The puzzle in Listing 3 is called Consar nation t runs on the MC 10 and the CoCo in Color Basic MC 10 users see the change in line 130 To play type RUN and press the enter key The program draws a large blue frame that contains an arrangement of blue squares Filling out the frame around the squares are single digit numbers in no par ticular order In the northwest corner is a flashing orange cursor You move it within the frame by pressing A for north Z for south comma for west and period for east Trying to move into any blue area has no effect The object of the puzzle is to move the cur sor around the grid in attempt to land on the highest digit possible with every fifth move The numbers you land on with every fifth move are totaled by the computer as your score Digits you land on with a fifth move become zeros when you leave them You are not allowed to double back on a move within a turn At the end of 10 turns the computer dis plays your final score andanswerstring The latter indicates each of your moves by com pass direction To printout theanswerstring for your high score type PRINT 2 S and press the enter key MC 10 users type LPRINT S and press the ent
291. will attack your laser turret and penalize you by stealing some of your extra cities You lose the game if you do not have any extra cities if all your cities are destroyed or if a missile penetrates the ground near a city Loading Missile Defense Missile Defense is made up oftwo separate programs the main program Defense 2 Listing 1 and its controlling Basic loader program Listing 2 To load Missile Defense type in and save Lisitng 1 Due to memory limitations users with 16K systems must type PCLEAR 2 before entering Listing 1 Then enter the Basic loader by typing in List ing 2 after entering CLEAR 200 amp H3D00 Note 16K users must unplug the disk con troller in order to have sufficient memory System Requirements 16K RAM Extended Color Basic Joystick 44 HOT CoCo June 1985 laani The Basic loader saves the machine code on tape or disk On disk systems the loader will automatically save the machine code to Drive 0 If you use tape use Listing 2 to gen erate the machine code and then save that code directly after Listing 1 Special Features You can make the game more competitive Defense II includes a top ten scoring routine which allows you to modify the program through the use of an auto disk save With it you can record the scores ofthetop ten play ers To take advantage of this feature re move the remark symbol from line 2630 but first be certain that line 1090 is
292. wsweekly Authoritative Objective Easy to read 29 58 for 51 issues only 58 an issue inCider The Apple journal and the only magazine devoted exclusively to the Apple family of computers 24 97 for 12 monthly issues Save 3096 off the cover price Macworld The worid s most creative computer de mands a journal that s just as simple powerful and fun Macworld Now 12 issues of this attractive easy to read publication can be yours for only 24 you save 6 HOT CoCo Keep the color in your life all year long with HOT CoCo the magazine specifically created for the TRS 80 color computer and MC 10 user 24 97 for 12 months Save 30 off the cover price 80Micro Don t risk being an uninformed TRS 80 user Get current unbiased system specific information from the largest most knowledgeable TRS 80 source 24 97 for 12 Save 4896 off the cover price RUN The informative and fun Commodore 64 Vic 20 monthly Comprehensive software hardware reviews ac tion packed games and timely tips to help you get the most Out of your system 19 97 for one year 4396 off the cover price Micro Marketworld Seling Twice month get in depth reviews forecasts to keep ahead of consumer trends market needs FREE if you qualify 42 HOT CoCo June 1985 On Communications Bypass teleconferencing CATV each month explore the major developments shaping our communications world FREE to qualified applicants
293. y CA Brooks Cole 1983 Mike Wogan Dept of Psychology Rutgers University Camden NJ 08102 Where s the Software 1 a CoCo user from Toronto Canada I enjoy programming and using my CoCo but can t seem to find any places in Toronto car rying software for it I wonder if readers know of a distributor in Toronto I am also looking for a Canadian distributor of Instant CoCo be cause if order it from the U S it takes ages to get through customs Rob Kraft 22 Robingrove Rd Willowdale Ontario M2R 2Z7 Canada Plea for MC 10 Users Including the minimum RAM require ments for listings in articles is great but it doesn t go far enough A requirement of 32K eliminates a 16K unit but 20K a common arrangement for the MC 10 might be suffi cient In addition readers might pare a list ing eliminating remarks or sections that aren t essential to them It is easier for the programmer to take acount than it isfor the readers A notationof theactualbyterequire ment for each program as written stated in the opening program line would be helpful Don t ignore us MC 10 users We still sup port you and would like to be supported in return Roger Koach Apple Valley CA We try to convert every Color Basic program we publish to the MC 10 and all programs that are MC 10 compatible are listed as such in the System Requirements boxes Your suggestion to include the minimal requirements in re mark statements is
294. y language Or is it enough just to have a basic no pun intended understand ing of what is going on inside the machine Old Arguments More and more this question reminds me of old arguments about learning to drive IfI want to use a car to transport myself isn t it enough that I learn driver education under stand the principles and maintenance of the gasoline engine and perhaps know how to change a flat tire I ve never felt it necessary to have passed courses in automotive me chanics to be a competent driver Certainly it would be an advantage to know how to re pair your own automobile but in today s so ciety most of us don t have the time However if automobile mechanics is where your interest lies that education is certainly available Now the point I m making is this Com puters in education are definitely stepping from the mechanics mode into the driver ed ucation mode More and more teachers look upon computers as tools to be used to achieve new levels of efficiency in teaching students how to handle real life situations There is less emphasis on programming and language and more on the use of software New Characteristics Furthermore educational software is de veloping new characteristics Computer aided instruction CAI was originally touted as the concept that would revolutionize to day s education or perhaps replace the teacher For that to happen every student would need constant access to a co
295. y occupied by capacitor C48 This is the hole closest to the board s bottom edge Solder the resistor in place Route the insulated wire through the previously drilled hole to the PC board s foil side This wire should be routed to the land that connects to the SAM socket s pin 35 Cut the insulated wire to length and remove approximately of an inch of insulation from the end Very carefully solder the stripped wire end to pin 35 on the SAM socket This now connects the 4164 s pin 9 s to address line A7 Check all connections cuts and so on to ensure that no solder bridges or metal fragments remain to short the lands Remove the 4K 16K jumper that lies between the two PIAs U4 and U8 on top of the board Wire wrap a length of 30 guage wire to the center post and connect the other end of the wire to PIA U8 s pin 17 you have the 1 0 replace it with a 1 1 or 1 2 version If it is not already set place the other 4K 16K jumper to the 16K position Install the new 64K RAM chips and replace the SAM chip Be sure to line up the notches in the sockets with the notches on the chips Proceed to thisarticle s ROM Write Disabling section 64K Upgrade E Boards Moderate If you already have a board that Radio Shack calls 32K make certain that the jumper to the left of U8 connects the center pin with one marked LOW and then continue to the ROM Write Disabling section If your E board has 4 or 1
296. y replacing the entire board know of two IC manufacturers who are delivering those 64K RAM chips at this writing Hitachi part number 50464 and NEC part number 41254 Do not confuse the NEC number with the 41256 1 bit wide by 256K dynamic RAM chip These chips currently sell for 25 to 35 each Very soon atleast two other chip manufacturers will offer similar chips Texas Instru 54 HOT CoCo June 1985 ments will introduce its 4464 chip and Micron Technologies will introduce its 4064 chip Intel might offer its own version too so expect prices to drop on the 4 bit by 64K RAM chips All of the above chips should work for the CoCo 2A 64K up grade which is simplicity itself First remove the two socketed 16K RAMs labeled TMS4416 and replace them with your two 4 bit by 64K RAMs aligning the notches on both chips and sockets Then solder a jumper between the two solder points on the front i e closer to the keyboard right part of your CoCo board they are clearly marked 64K RAM and enclosed a little rectangular white outline That s all there is to it I used the NEC chips for this upgrade and have experienced no problems Technical Details The CoCo 2A uses a new SAM chip 74LS285 It is the only chip other than memory socketed on the main board and is very similar to the old SAM but it possesses 256 cycle refresh circuitry rather than the 128 cycle circuitry of the old SAM This is to accommodate the new 4 bi
297. you to the Moon Eagle is a lunar orbi ter and lander whose thrusters and craft altitude you control with joysticks The program dis plays horizontal and vertical vel ocities acceleration values vertical and horizontal distances from target and fuel consump tion on the screen In the ad vanced levels you ll encounter problems that cause dangerous approaches Eagle requires 32K and two joysticks It sells for 90 HOT CoCo June 1985 24 95 on cassette and 29 95 on disk Contact Saguaro for more information Bill Cook author of The Ad venture Generator plans to re lease a new version of the program called The Adventure Builder It will offer several im provements over its predeces sor including multiple sessions the ability to reedit creations scroll protected split screen out puts and the capacity to create adventures that use more mem ory The source for The Adven ture Builder is Island Software The program comes on disk and sells for 39 95 plus 3 for ship ping Write the company for more information Computer Systems Distribu tors has released ChessD a challenging high resolution chess game that offers special moves including castle en pas sant and pawn promote It also has a built in tournament timer a 32 000 move disk opening book and several other features ChessD is manufactured by the same company that sells SDOS SD Basic Compiler and SEdit Type Word Process ing It requires 64K an
298. you to split a single pro gram line into two consecutively numbered segments copy a line to a new location merge any two consecutive lines or auto matically number new lines as you enter them Summary Edittron runs smoothly Its ability to make numerous changes to a line of code without havingtoleave the editor and retypethe Edit command a common occurrence with Color Basic is welcome It is true that you must sometimes use several Edittron commands to get the job done and you must return to Basic to save any modifications you make Petrocci Freelance Guillotine 7 75 Alphabet Song 8 75 Chalkboard Math 1575 1235 ABC s Big Bigger Biggest Shapes Medical Terminology Telepotch ak Dis Oniy 14 75 75 00 18 75 18 75 145 00 1975 14 75 Viking ll 32K Color Disk Trio Question Disk Chcose From History 9 Science amp Inc werd Mevies amp 7 9 Spo s The Written Word Question Disk 750 When Purchased Win Gornc load 32k Ockywoky Light Runner Jumbo Je 18 75 Fantasy Gamers Pack 2 75 Adventure In Wonderland 32 18 75 Decipher 1875 32k 18 75 Flight 18 75 Gangbusters 18 75 Monsters amp Ma ic 32k 18 75 Naked Gamer 18 75 1875 Viking 1875 loge 10 Disk 18 75 Varaivzer 44k 18 75 Oraclell lope 26 75 Disk Zapper 26 75 Cione Master lome 32k 29 75 Color Kit 26 75 lope Omni Clone 2275 Super Scroll 18 75 Saguaro Software 36 HOT CoCo June 1985 Statistico

Hot Coco Vol. 3 No. 1 - June 1985 - TRS

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