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1. Check Power hard disk spins up Connections to speed Check Fuse Call for Service A drive becomes gt gt v N r CVonsul1t PC troubleshoot active as diskette ing guide boots 1 HardFile becomes active Correct Boot Disk TALLGRASS Tech HardFile Correct TG Version BIOS message appears R W Access lamp lites CRC Time 11 45ms to 13 98ms gt CRC Generator is bad Call for Service Options Listing appears Motor Speed D620 to D660 2 Cannot check Motor Speed i Examine track UTILITY 49 Configuration Data appears gt Config Data and HardFile BIOS disagree Correct Boot Disk Run TGSYS to reconfigure System prompt for Date and Time appears A prompt appears Power Up is now complete normal operation can begin For any further problems consult the Sections concerning the use of the UTILITY and TAPE programs TI MS DOS ranges 12 47ms to 14 11ms COMPAQ DOS ranges 12 75ms to 13 16ms Columbia ranges 11 18ms to 12 75ms TG 3006 0132H TG 3012 0132H TG 3020 01E0H TG 3135 02B8H TG 3170 03DAH 90 5 2 Audible Error Codes Because it is sometimes impractical to display error mes sages on the screen the TALLGRASS BIOS communicates with the operator by using a series of coded beeps that eminate from the PC when certain error conditions occur The beeps are patterned to correspond to binary representations of numbered error
2. Au The SAVE Feature Select S for SAVE The following prompts will appear Which Drive C D E F Which drive do you want to SAVE This ap pears only if the HardFile is configured as more than one drive ENTER NUMBER OF TAPE TRACK TO USE 0 1 2 3 Which tape track to start saving to For a blank tape select 0 for the most efficient use of the tape BACKUP NUMBER This appears in the TAPE RECORD ORIGIN REPORT to help keep track of different tapes This can be any number you choose up to four digits BACKUP NAME Can be any eight character string The tape name will also appear in the origin report as above NOTE THESE ARE ONLY EXAMPLES THE DRIVE DESIGNATIONS AND TAPE TRACK NUMBERS DEPEND ON THE SYSTEM YOU ARE USING AND ITS CONFIGURATION THE TAPE TRACK NUMBERS 0 9 WILL BE LISTED FOR LARGER TAPE DRIVES In order to SAVE to a tape track it must be blank erased and not SAFE PROTECTED Before the TAPE Program begins writing data to the tape it will first read a small por tion of the tape to determine if it has been erased If either of these conditions are not satisfied an error messge will occur advising you of the pending condition After the information is saved it will automatically be verified The position codes that appear have the same meaning as in CERTIFY Figure 4 4 If during verifica tion an error has occured the system will reinitiate the VERIFY up to three times in an effort to o
3. lst records s 000 Figure 4 5 Tape Origin Report 4e If a BADTRACK File exists it will be listed and you will be questioned by the system if you still want to UNSAVE If the tape to be unsaved was initially saved from the same HardFile with the same BADTRACK file the data will be unsaved intaet If this is not the case the data may be damaged when unsaved You will also be prompted if the origin reports differ Figure 4 6 If any errors occur during UNSAVE the system will automa tically attempt another UNSAVE After the third unsuccessful attempt the program will abort and list an error report UNSAVING TAPE TO DISK Tape track lt lt 0 Tape number 00001 Tape name test Creation date 06 11 83 Creation time 10 30 33 Saved from drive C lst records s 000 Tape track 0 Has Records That Were Saved from Drive C Are you sure you want to UNSAVE to Drive D Y N Figure 4 6 Origin Report Error The VERIFY Feature VERIFY unlike CERTIFY is a non destructive test that checks the current tape data for readability without modifing it This test detects and displays errors using the same format as CERTIFY Figure 4 4 and Table 4 1 The cartridge must be SAFE PROTECTED to run VERIFY The ERASE Feature ERASE is a FULL WIDTH ERASE over ALL tracks This erases the entire tape at once No selective track erasure is available As with Rewind and Fast f
4. Taligrass Technologies Corporation 4 SOFTWARE INSTALLATION INSTRUCTIONS and OPERATIONS MANUAL FOR MODELS TG 3006 TG 3012 TG 3020 TG 3135 TG 3170 TALLGRASS reserves the right to make changes to the products de scribed in this document in order to improve the design or performance and to supply the best possible products TALLGRASS assumes no re sponsibility for the use of this product in any application conveys no license under any patent or other right and makes no representation that any application contained herein is free from patent infringement Any application contained in this publication is presented for illustration pur poses only and TALLGRASS makes no warranty that such applications will be suitable for the use specified without further testing or modifica tion Reproduction of any portion of this publication without the prior written consent of TALLGRASS is prohibited First Edition June 1983 Copyright by Tallgrass Technologies Corporation 1983 First Printing July 1983 Second Printing August 1983 Third Printing September 1983 Fourth Printing October 1983 Fifth Printing December 1983 Sixth Printing March 1984 TALLGRASS TECHNOLOGIES CORPORATION Operation Manual for Models TG 3006 TG 3012 TG 3020 TG 3135 TG 3170 Copyright 1983 by TALLGRASS TECHNOLOGIES CORPORATION All Rights Reserved WARN ING This equipment generates uses and can radiate radio frequen
5. Determine from Figure 1 1 which pin pair enables the IRQ you will be using on the HardFile System Install the jumper on the appropriate pin pair When you are sure that you have selected the cor rect Interrupt Request signal install or reinstall the Interface Circuit Board Refer to Installing the Interface Circuit Board Section 1 6 Perform the following steps to patch the TALLGRASS software 5 Refer to your DOS Operation Guide for use of the DEBUG Program Using DEBUG change offset location XXXXH refer to Table 1 2 for location in the TALLGRASS TGTBIO COM file of the diskette that came with the HardFile froma value of 03 to the IRQ you have selected i e if you have selected IRQS then change the value at offset location XXXXH to 05 6 When you are sure that you have patched the correct offset location remove the Write Protect tab from the TALLGRASS Software Diskette and use the DEBUG W command to write the patched file onto the TALLGRASS Software Diskette Reinstall the write protect tab Remember this diskette is a master diskette It is also possible to patch the TALLGRASS version of CPM 86 support software In this case the DDT 86 the CPM 86 debugger program should be used to change the contents of offset location XXXXH in the WINCH CMD file SOFTWARE TG 3 XX TG 4 XX TG 3 XX TG 3 XX VERSION for PC DOS for PC DOS CPM 86 MS DOS FILENAME TGTBIO COM COM TGTBIO COM COM WINCH CMD
6. CMD TGTBIO COM COM LOCATION XXXXH 0172H 018BH 01E2H 0172H TABLE 1 2 Retaining Bracket z0 f fr Plastic Ar Ill ass Ii ai Connector E 09 3 E ch RNI 34567 P2 iil RN2 Hoy SIRO Select Block Figure 1 1 TALLGRASS Interface Circuit Board This completes moving the TALLGRASS Interrupt Request signal 1 5 I O Addresses The TALLGRASS IBM compatible Interface Circuit Board uses 1 O addresses 280H thru 285H to exchange data and commands with the Personal Computer The use of any one of these 1 O addresses by other devices or software may result in unreliable HardFile operation There is currently no soft ware patch available to permit the use of alternate I O addresses by the HardFile System For programming information relavent to I O addresses 280H thru 285H con sult Chapter Seven Programming Notes 1 6 Installing the Interface Circuit Board The following steps will require removal of the cover from the System Unit of your Personal Computer 1 Turn off the System Unit of your Personal Computer and remove the plug from the A C receptacle DO NOT ATTEMPT TO INSTALL THE INTERFACE CIRCUIT BOARD WHILE POWER IS APPLIED TO THE PERSONAL COMPUTER DOING SO WILL RESULT IN DAMAGE TO BOTH THE INTER FACE CIRCUIT BOARD AND THE PERSONAL COMPUTER 2 Remove the appropriate cabinet securing screws at the rear of the Personal Computer so that the cabinet may be removed to expose the I O Channel Connec
7. capacity of another logieal drive will be added to the indieated drive until all of the storage capacity of the HardFile is assigned 13 Similar in operation to the key except this key causes storage space to be subtracted from the logical drive pointed to by the arrow NOTE AND CAN BE KEYED FROM EITHER THE KEYPAD ON THE RIGHT OR THE TOP ROW OF KEYS SPACE Moves the arrow from one logical drive to the next BAR ESC Pressing the ESCAPE key causes TGSYS to exit the partitioning portion of the program and go on to configuration H Stands for HELP Pressing the H key at any time during the execution of the TGSYS Program will display an explaination of the various options and the keystokes required to change parameters NOTE PRESSING ANY KEY OTHER THAN THOSE DESCRIBED WILL CAUSE THE PC TO BEEP THE COMBINATION OF CTRL C WILL ABORT TGSYS AND RETURN THE DOS A gt PROMPT The total HardFile capacity of 12 53 mb may be partitioned in increments of 3 13 mb to form logically individual disk drives Please combine remove increments as desired to create the desired number and size s of logical drive s COMMANDS Combine inerement Remove increment spacebar Move indicator ese Exit to next screen H Help gt 3 13 mb for DRIVE ONE 3 13 mb for DRIVE TWO 3 13 mb for DRIVE THREE 3 13 mb for DRIVE FOUR Figure 2 2 HardFile Partition Display 14 Take a few moments to experiment with the vari
8. codes Table 5 1 shows the pattern and meaning of these codes Error Code Sound Pattern Error Condition 1 SSSL CRC Generator Timeout The CRC calculation did not occur within the predetermined amount of time NN u mE u u u m B KEY S Short beep L Long beep Read Timeout A Read operation was initiated but a valid pre amble was not detected DMA Timeout A DMA transfer was initiated but was unsuccess ful Head Stepping Error A R W head position command was issued but was unsuccessful Head Homing Error A command was given to position the R W head to track 00 and was unsuc cessful Table 5 1 5 3 DOS Error Codes Since the HardFile appears to DOS as just another disk drive s all DOS error messages apply Consult the Device Error Messages and Other Messages sections of your DOS manual for more information Some error messages can be especially confusing depending upon when they occur Divide Overflow for example may occur during a HardFile directory or file access This usually indicates damage to the Directory FAT Re Initial ization of the directory may be required Section 3 1 or the DOS RECOVER Command might be attempted to repair the damaged directory 91 9 4 Technical Support TALLGRASS Technologies maintains a staff of specialists in the Customer Serviee Department to help with any problems that arise in the operation of your HardFile Subsystem T
9. discovers more than twenty four BADTRACKS the program will terminate This condition is usually the result of shipping damage E EXAMINE SPECIFIED TRACK This feature allows the user to exercise a specifie track for possible weakness or defects THIS IS A DESTRUCTIVE TEST I E THE EXAMINE TEST WILL DESTROY PREVIOUSLY STORED DATA The user will usually be warned if an area of the disk is occupied by a file EXAMINE also provides the user with a means of making entries to the BADTRACK FILE Any track good or bad can be defined as a BADTRACK by using this feature If examining a track displays an error the number of errors displayed will be one Sinee two errors must occur before a bad track is stored in the BADTRACK FILE the user should answer Yes when the system asks for bad tracks that are not in the display The indicated BADTRACK should then be typed in for proper recording in the BADTRACK FILE The following features do not need to be performed following the completion of TGSYS They can however be run whenever needed to perform HardFile diagnostics 26 D DIRECTORY RE INITIALIZE This feature allows the user to to install a blank directory and File Alloeation Table USING THIS OPTION WILL DESTROY THE CURRENT DIRECTORY To re install a eopy of the current directory use the COPYDUP program discussed in Chapter 2 After the directory has been installed the system will ask for entries to the BADTRACK FILE The user may
10. following conditions apply 34 1 Prolonged storage time 2 Storage at a temperature extreme 3 Physical shock 4 Excessive read write errors Tape Drive Cleaning The read write head assembly and integral tape cleaner should be cleaned after the first two hours of tape move ment when using a new tape cartridge Normal cleaning should be done after every eight hours of tape movement Clean these areas with a lintless cotton swab moistened with an IBM or equivalent head cleaning solution or isopropyl aleohol if it is not available Care should be taken to ensure that excess cleaner is not applied and that all residue is removed Head cleaning should be performed with the power off Figure 4 2 The sensor within the opening of the Tape Drive that senses the Beginning of Tape and the End of Tape should be dusted off occasionally using a dry cotton swab See Figure 4 2 for the location of the sensor TER Integral R W Tape Cleaner Head Assembly Tape Hole Sensor Figure 4 2 Cleaning Locations Recommended Tape Cartridges 3M Seoteh Brand Use the DC 300XL to store up to 12Mb Use the DC 600A to store up to 45Mb for the TG 3135 70 only Archive Corp Use the Model 09C to store up to 12Mb 35 4 5 Streaming Tape Versus File By File When backing up and restoring data using the Tape System a decision should be made between Streaming Tape or File By File methods To backup an entire logical HardFile drive that i
11. if any errors owing to the factory testing and formatting More than twelve errors during the read test indicates possible damage in shipment Corrective action will be required to resume HardFile operation P FORMAT CERTIFY This UTILITY feature allows you to FORMAT and CERTIFY the HardFile surfaces The Utility program formats the HardFile by writing and reading test data to and from the internal disk drive Each track is exercised thirty two times If more than one error occurs the BADTRACK is identified and automatically recorded in the BADTRACK FILE Although the HardFile is shipped from the factory already formatted it is best to re certify the HardFile prior to actual use FORMATTING takes about twenty to thirty minutes per HardFile surface When completed FORMAT writes a new Directory and FAT PO on After each logical drive has been formatted the system will give the user an opportunity to add BADTRACKS to the BADTRACK FILE Refer to the BADTRACK MAP STICKER located on the bottom of the HardFile Figure 3 3 If the FORMAT feature has not identified the BADTRACKS listed on the sticker these tracks should be entered manually It will be necessary for the user to be familiar with the logical disk drive to read write head relationship HARDFILE BAD TRACK MAP Lim eh Head Turk v end Tas Figure 3 3 BADTRACK MAP STICKER Up to twenty four BADTRACKS may be identified by the FORMAT feature If the FORMAT feature
12. situation arises either the device using IRQ3 or the HardFile will have to be moved to one of the other IRQ signals If you decide to move the HardFile System refer to the following steps 1 Determine which IRQ signal is available for use in your particular configuration Note that IRQ3 thru 7 are available for selection on the TALLGRASS Interface Circuit Board IRQ 0 and 1 are dedicated to internal use by the System Unit Table 1 1 Typical Interrupt Request Assignments IRQ Assigned to System Unit Refresh Counter Timer Speaker Orchid Tech PC NET COM2 TALLGRASS HardFile COM1 IBM Fixed Disk Controller Orchid Teeh PC NET aD 6 IBM Diskette Controller 7 Parallel Printer Table 1 1 2 Locate the TALLGRASS Interface Circuit Board If you have already installed the Interface Circuit Board in the System Unit of the PC turn off the power to your PC and remove the Interface Circuit Board from the System Unit 3 On the component side of the Interface Circuit Board the side of the board where the integrated circuits are mounted observe the block of pins just above the gold plated edge connector The pair of pins located furthest away from the black plastie interface connector has a solderless jumper that eleetriely connects the pair together This jumper will slide off the pin pair and can be reinstalled on adjacent pin pairs This is how the Interrupt Request signals are selected Refer to Figure 1 1 a 4
13. the GCR write process The GCR process is the HardFile Systems first level of error detection HEAD The component s of the disk or tape drive which convert electrical energy into magnetic energy or vise versa necessary for the transfer of data to and from the disk media or magnetic tape LANDING ZONE An area of disk media where no data can ever reside which provides a location for positioning the heads when the system is to be transported or powered down NIBBLE A group of four bits or 1 2 of a byte PARTITION A portion of disk media designated as one logi cal drive A partition is always greater than or equal to one surface of disk media 58 PLATTER A component of the hard disk drive which rotates on a spindle and consists of two 2 surfaces of disk media RZ Recording Zone The portion of magnetic tape upon which data resides SECTOR The amount of disk media required to store 512 bytes typically of data TRACK Specific concentric circles of disk media or longi tudinal lines of magnetic tape upon which the read write access heads are positioned when transferring data to or from the drive s WZ Warning Zone That portion of magnetic tape upon which data cannot reside whereas beginning or end of tape is emminent 99 NOTES 60 Appendix II Technical Support Bulletins 61 NOTES 62 Appendix III Additional Operating Notes Drive Size Under IBM s implementation of DOS 2 0 de vices l
14. will allow the interface between the HardFile and the Personal Computer after you have partitioned the HardFile Proceed to Chapter 2 Chapter Two Software Installation 2 1 The TALLGRASS Software Diskette The TALLGRASS Software Diskette ineluded with the Inter face Package contains programs to aid in Partitioning Configuring Formatting and Testing the HardFile System The Diskette also contains the software drivers that allow DOS to recognize the HardFile System This sofiware disk ette should be used only as a master diskette that is do not attempt to execute the programs directly from this diskette Your DOS master diskette and the TALLGRASS Software Diskette will be used to create a new TALLGRASS Boot Diskette for use when you want to activate the HardFile System When you boot up on a regular DOS diskette instead of the TALLGRASS Boot Diskette the Personal Computer will behave as though the HardFile System is not connected to the System Unit It is recommended that you obtain a directory of the TALL GRASS Software Diskette t this time The names of the files in the directory vary depending upon which Operating System O S you are using Table 2 1 describes which TALLGRASS Software version to use for your O S Listed below each O S supported by TALLGRASS is the appropriate TALLGRASS Software version and a list of files that will appear in the directory for each version The files may appear in any orde
15. 10 Under CPM 86 the PIP command is used to copy files Refer to the CPM 86 Operation Manual for more details 4 After copying has completed obtain a directory of the new diskette The names of all of the TALL GRASS files should be present in addition to the DOS file named COMMAND COM COMMAND COM is not used with CPM 86 Hereafter the new diskette just created will be refered to as the TALLGRASS Boot Diskette You are now ready to run the TGSYS Program to partition and configure the HardFile Proceed to the Section indicated in Table 2 1 for the O S you are using 2 2 The TGSYS Program Before running the TGSYS Program a new boot diskette must be created and the Interface Circuit Board installed Chapter 1 The three main tasks of the TGSYS program are as follows la It divides the HardFile into more than one logieal disk drive volumes or allows the O S to recognize the HardFile as one large drive Combinations up to 28Mb and up to seven logical drives are possible depending on the TALLGRASS model selected You have eontrol over how the disk is divided Refer to the equipment Specifications Summary on page VIII at the beginning of this manual to determine the number of surfaces in your HardFile m It allows you to manipulate the various HardFile options Verify Read After Write Duplicate Direc tory Cache Memory and Landing Zone to best suit your applications d It modifies the O S as neccessary to recogn
16. 20B Tape Drive TG 3100 series Archive Model 9045B Analog Circuit Board Buffer Circuit Board DMA Interface Circuit Board ACCESSORIES Description Wired For 250 VAC Sticker pkg of 6 ea Bad Track Map Stickers Beige Front Panel Touch Up Paint Gray Cabinet Touch Up Paint Shipping Container TG 3000 3100 series Service Manual TG 3000 series Service Manual TG 3100 series Spare Parts Order Form 54 Chapter Seven Programming Notes 1 DMA Operation The standard TG 09 IBM Interface Kit contains an Interface Circuit Board which uses Interrupt 3 and DMA Channel 3 While the interrupt is strappable to different interrupt lines the DMA Channel is fixed on Channel 3 The DMA circuitry of the Interface Circuit Board is designed to work in conjunction with the 8237 DMA Controller located on the system board Beginning with Revision H the Interface Cireuit Board is capable of sharing Channel 3 by virtue of a tri state driver which is placed in the high impedance state when the DMA circuits are disabled Relatively few accessories IBM and others use DMA at all The IBM fixed disk uses DMA Channel 3 Both the IBM and TALLGRASS hardware software are designed to share DMA Channel 3 in a serially re usable manner Single user O S such as IBM DOS 2 0 will see no difficulty in sharing DMA Channel 3 Multi user and or multi tasking systems will require special programming considerations to avoid competition for DMA Users of O S other th
17. 5 2 Audible Error Codes Tr 9 DOS Error Comes iiie 9 0L 9 4 Teehnical Support B EL e RE 5 5 Application Software 52 Chapter Six Malnt nate ce sesecus vsseseceQMa 04 6 1 Replacement Parts 53 Chapter Seven Programming Notes 55 T l DMA Operation e 2524 229 7 2 1 0 Addresses 280H 285H 55 Appendix 1 GlOSSATWos es545 9 522 X5 5sus etoxsom cb Appendix II Technical Support Bulletins 61 Appendix III Additional Operating Notes 63 Appendix IV Interface Requirements 65 IV Warranty Terms and Policy TALLGRASS Technologies uses the highest quality compo nents available today in manufacturing the industry s finest mass storage systems Our quality assurance pro gram minimizes field component failure and provides system reliability largely unavailable in the microcom puter industry The TALLGRASS standard product warranty covers parts and labor on all components excluding tape cartridges for a period of 90 days from documented date of sale In most cases your authorized TALLGRASS supplier will perform any required service IMPORTANT IN ORDER TO VALIDATE YOUR WARRANTY FILL OUT AND RETURN THE WARRANTY REGISTRATION CARD WITHIN 10 DAYS OF PURCHASE DATE To return any defective equipment to TALLGRASS a FAILURE REPORT Form must be attached prior to returning it to the factory In addition a RETURNED MATERIALS AUTHORIZATION RMA Number must be obtai
18. GOONFIG DAT in stead the information is stored in an already existing file called TGTBIO COM 16 2 2C TALLGRASS Version CPM 86 3 XX Support for IBM CPM 86 Version 1 00 TGSYS for CPM 86 is presently in preliminary form it is being prepared for final release in the near future The HardFile is automatically partioned into four logical drives with preset allocation units and directory size In it s present form the only choices to be made are drive designations After typing TGSYS and a RETURN the follow ing prompt will appear Enter drive designation for FIRST HardFile A B C D E P Q H I J K L M N O Each time you make a selection the system will prompt you for the SECOND THIRD and FOURTH HardFile designations You must enter all four When the last designation is entered the TGSYS program will pause briefly then display a Program Complete message and the A prompt At this point TGSYS is complete and the HardFile should be formatted using UTILITY CMD similar to UTILITY described in Chapter 3 2 2D TALLGRASS Version MS DOS 3 XX Support for T I MS DOS Version 1 25 The steps to follow when running TGSYS are the same as for TG3 XX DOS1 10 see Section 2 2A 2 3 Verify Read After Write Use of the Verify Read After Write option offered in TGSYS causes the HardFile to automatically read back the data just written to the disk This occurs during each write to disk The data read back is compared to the conte
19. NEVER place objects on the tape cartridge NEVER remove the cartridge from the drive while the tape is in motion NEVER expose the tape cartridge to extreme temperatures Preparation New tapes should be conditioned prior to use Expose the tape to the operating environment for a time equal to or greater than the time away up to maximum of eight hours Fast forwarded and Rewinded to repack the tape within the cartrige CERTIFY does this automati cally certified by running CERTIFY Storage Tapes should always be kept in their protective case and stored in a cool dry place operated under the following conditions Temperature 41 to 113 F 5 to 45 C Relative Humidity 20 to 80 noneondensing Maximum Wet Bulb Temp 79 F 26 C kept away from stray magnetic fields i e motors power transformers magnetie tools telephones CRT monitors etc advanced to Beginning of Tape BOT or End of Tape EOT before removal Remember the tape cartridge like all contact recording media has a useful life span and will wear out Excessive errors or abnormal audible noise may indicate a worn out cartridge or an impending failure Data on that cartridge should be replicated on a new cartridge as soon as possible Tape Tension Proper tape tension is necessary for successful read write operation It is recommended that a cartridge be reten sioned by Fast forwarding and Rewinding prior to use if any of the
20. UMBER OF LOGICAL OF will TAPE DRIVE S DESIGNATED SIZES then occupy TRACK S 1 Es 4 4 C 4 2 Es Ds 2 4 C 2 2 4 D 2 4 Ci Ds Es Es 1 4 Cx 1 1 4 D 1 1 4 E 1 1 4 F 1 3 Gs Dt Es 1 4 C 1 1 4 D 1 2 4 E 2 2 Cs D 1 4 Os 1 3 4 D 3 NOTE The drive designations shown here are only examples actual designations will depend on your system If there is one resident system drive A then C through F will be available If two A B then C through F if three A B C then D through G These examples are typical cases many more arrangements are possible Table 4 2 For a 12 12Mb system one tape is sufficient to SAVE the entire contents of the HardFile For 12 20Mb or larger systems two or more tapes will be needed if the entire disk is to be saved In the latter case the system will prompt you when another tape is needed to complete the backyp You can see that the number of tracks needed holds the key to the number of copies possible In other words if only one track is required then up to four copies of that logical drive can be made on a single tape If two tracks are required then two copies can be made Of course if more than two tracks are required then only one copy is possible For larger systems 12 20Mb and above this relationship is not as simple If the HardFile is divided into four drives a single drive 20Mb 4 5Mb will neeessarily occupy more than one tape track 12Mb 4 3Mb
21. accustomed to using your TALLGRASS HardFile System a false sense of security may develop With such a large amount of storage capability available and the speed and ease with which it can be accessed the need for a tape drive may at first not be apparent Why use such a relatively slow mass storage memory device when the HardFile System is so well suited for the task The fact is no device is faultless nor is it immune to failure A wise computer operator once said If it s worth keying in it s worth backing up This is the primary purpose for the tape drive backing up the HardFile System as well as the resident system drives This is made possible thru the use of the TALLGRASS provided routines TAPE TGTAPE TGBACKUP TGRESTOR and TAPEDIR all of which are explained in detail within this chapter 4 2 The Tape Cartridge Before continuing a tape cartridge Seoteh Brand DC Series or equivalent see Section 4 4 will be required to perform the various tests NOTE THE TAPE CARTRIDGE ALTHOUGH WELL CONSTRUCTED IS QUITE DELICATE AND SUBJECT TO HANDLING AND STORAGE REQUIRE MENTS IT IS STRONGLY RECOMMENDED THAT YOU FAMILIARIZE YOURSELF WITH SECTION 4 4 TAPE DRIVE amp TAPE CARE AT THIS TIME Scotch is a registered trademark of Minnesota Mining and Manufacturing Co 3M Write Protecting the Tape Cartridge The tape cartridge is equipped with a write protection mechanism designed to reduce the possibility of accidental
22. al peripherals and hardware options available for the PC which will enhance the operation of your total system These accessories are not always compatible with each other Sometimes these devices and the HardFile may interfere with one another causing unreliable operation of one or both devices The HardFile and the TALLGRASS Software can be adjusted to co exist with other devices that may be sharing the the I O Channel Interface Bus Slight alteration of the TALLGRASS Inter face Circuit Board and a corresponding patch to the TALLGRASS Software should allow the HardFile System and the other devices to respond normally Refer to Interrupt Request and I O Addresses in this chapter Refer to Chapter Seven Programming Notes for a diseussion of DMA Channels The installation and operation manuals for the particular peripherals or hardware options you are using in your system usually eontain compatibility information If in doubt as to whether or not your eurrent PC eonfiguration is compatible with the HardFile System contact the manufaet urers of the other deviees used in your eonfiguration 1 4 Interrupt Request The TALLGRASS HardFile System is shipped from the factory set to use Interrupt Request 3 IRQ3 This I O signal is available at pin B25 of any of the I O address connectors If any other device in your Personal Computer uses IRQ3 such as COM2 serial interfaces ete un reliable HardFile operation will result If this
23. an IBM PC DOS may contact TALLGRASS for further information 7 2 I O Addresses 280H 285H Six I O addresses are decoded to provide the control lines required by the TALLGRASS controller Address lines A0 thru A9 are decoded to recognize I O ports 280H thru 285H Secondary responses will occur at ports 680H 685H 0A80H 0A85H and OE80H 0E85H Solder straps allow decoding of these different addresses however no software patch is presently available When used with the TALLGRASS control ler the I O ports are assigned functions as defined in Table Tol I O Port Assignments Status Control 2 Data Data CRC byte Address MSB CRC select Reserved Address LSB DMA Intrpt Status DMA Intrpt Enable Reserved Control 1 Table 7 1 90 NOTES ob Appendix I Glossary of Terms ALLOCATION UNIT The unit of disk media in bytes which is used by DOS and other operating systems to calculate the availability and usage of disk space It is the mini mum number of bytes of disk media alloted to each directory entry or file name The allocation unit is the basis of all entries in the File Allocation Table FAT APPLICATION A program or series of programs that perform s funetions specifie to a user s needs e g stock market analysis inventory control and order entry BIT A binary digit i e a logical 1 or 0 BOOT bootstrap loading The process by which a pro grammed loader or operating system is instal
24. arger than 30 Mb are not possible since no provision is made in the DOS bootstrap for use of sectors larger than 512 bytes This requires that 35 and 70Mb HardFiles be partitioned into volumes of 30Mb or less Command Compatibility Some of the DOS commands for example FORMAT DISKCOPY and DISKCOMP will not work in conjunction with the HardFile or may work with confusing results DISKCOPY and DISKCOMP are designed specifically for use with diskette devices only and must not be used with Hard File devices FORMAT is also specifically for use with diskettes only and should not be used where a HardFile device is desig nated A or B FORMAT contains its own private drivers for the diskette format functions per se but when FORMAT attempts to install the directory and or system files on the new diskette it uses BIOS and attempts to reference the diskette as A or B without realizing the A B may now be redefined as a HardFile device As such FORMAT will install a new floppy directory on the existing HardFile device and destroy the HardFile s directory To be safe FORMAT DISKCOPY and DISKCOMP should never be used with the modified system made by TGSYS Instead always reboot with unmodified DOS before using these programs 63 NOTES 64 Appendix IV Interface Requirements The HardFile connects to the host computer through its integral 34 conductor ribbon cable and separate host Inter face Circuit Board The host In
25. at this time type in other BADTRACKS in much the same way as the EXAMINE feature W WRITE TEST The WRITE test is primarily useful as a quick test for the HardFile It works the same way as the READ test except that test data is written to the disk THIS TEST DESTROYS DATA PRE VIOUSLY WRITTEN TO THE HARDFILE The WRITE test also writes a blank Directory and FAT upon termination B BADTRACK DISPLAY Using this feature allows the user to examine the contents of the BADTRACK FILE for the specified logical drive Q QUIT Exits the UTILITY program and causes the system to re boot It is recommended that a hardcopy printed or written be made of the BADTRACK FILE information If it becomes necessary to rebuild the BADTRACK FILE this hardcopy will provide the previous BADTRACK information 3 2 The SPEEDTST Program When the HardFile is activated by booting the Personal Computer with the TALLGRASS Boot Diskette the system per forms a diagnostie sequence to check the motor speed and the CRC time The SPEEDTST program allows checking the motor speed and CRC time while at DOS level Simply default to A gt or the floppy disk drive that contains the TALLGRASS Boot Diskette and type SPEEDTST then strike the RETURN key The system will display a menu Figure 3 4 with the following features M Causes the system to check the motor speed of the disk drive within the HardFile 27 G Checks the CRC time The time sho
26. btain proper verification If the final effort to verify is unsuccess ful verification is terminated and the following message s will be displayed HEAD XX TRACK XXXX NOT SAVED ON TAPE 41 Press any key to continue The HEAD TRACK numbers will be correlated to their respective files and the following message s will be displayed filename THIS FILE IN DANGER Make a list of these HEAD TRACK numbers and endangered files Erase the tape and attempt the SAVE again If these same HEAD TRACK and filenames reappear this indicates the files are damaged and cannot be saved These files are no longer usable These HardFile HEAD TRACK numbers should be tested using the READ test and if found faulty examined using EXAMINE both found in UTILITY Section 3 1 and entered into the BADTRACK file if neccessary The UNSAVE Feature Select U for UNSAVE The following prompts will appear Which Drive C D E F ENTER NUMBER OF TAPE TRACK TO USE 0 1 2 3 As in SAVE NOTE THESE ARE ONLY EXAMPLES THE DRIVE DESIGNATIONS AND TAPE TRACK NUMBERS DEPEND ON THE SYSTEM YOU ARE USING AND ITS CONFIGURATION THE TAPE TRACK NUMBERS 0 9 WILL BE LISTED FOR LARGER TAPE DRIVES An origin report follows this Figure 4 5 showing impor tant information about the tape UNSAVING TAPE TO DISK Tape track 0 Tape number 00001 Tape name mens test Creation date 06 11 83 Creation time 10 30 33 Saved from drive C
27. ch the same format as the PC DOS 2 0 RESTORE Fixed Disk Command The format for TGRESTOR is TGRESTOR d path filename ext Tn S D where indieates an optional parameter d is the logical Destination drive n is the Source tape track number 0 3 12 20Mb amp 0 8 35Mb and above S D operates as in PC DOS see your manual global characters are allowed The filenames being restored to the disk will appear on the display AFTER each transfer is complete The following message will appear at the beginning of the transfer Restoring files form tape track n 46 TGRESTOR can be used to restore the files from a tape to any drive HardFile or Floppy desired regardless of where they were initially backed up See Table 4 3 for the list of error messages 4 10 TAPEDIR To obtain a directory of a tape track TAPEDIR path filename ext Tn S where indieates an optional parameter n is the tape track number S operates as in PC DOS see your manual global characters are allowed 47 NOTES 48 Chapter Five Having Trouble 9 1 HardFile System Trouble Chart HardFile Power On Sequenee Using IBM PC DOS Key gt No unsuccessful operation Yes successful operation Power on PC Insert TALLGRASS Boot Diskette into Drive A Power on HardFile Ratcheting sound from gt Check Power Tape Drive Connections Check Fuse Call for Service Whirring sound as
28. cy energy As temporarily permitted by regulation it has not been tested for compliance with the limits for Class A computing devices pursuant to Subpart J or Part 15 of FCC Rules which are designed to provide reasonable protection against interference Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take what ever measures may be required to correct the interference Please direct all conments concerning this manual to Tallgrass Technologies 11667 W 90th St Overland Park Kansas 66214 Attn Technical Support Documentation Preface This guide provides a complete series of procedures for the installation configuration and operation of the TALLGRASS HardFile Subsystem The user of this system must introduce new hardware and new software as outlined in this guide This publication contains seven chapters Chapter One Hardware Installation covers selection of an appropriate power source and operating environment determination of hardware modification requirements and installation of the Interface Circuit Board Chapter Two Software Installation covers configuring the HardFile selecting of system software options and creating the integrated system TALLGRASS Boot Diskette Chapter Three HardFile Diagnostics describes various tests and procedures available for operational use at the HardFile System level Chapter Four Bae
29. e TALLGRASS software modifies the BIOS portion of the O S so that it can recognize the HardFile Any application soft ware that also modifies BIOS may create system conflicts If still in doubt contact the software supplier your Authorized TALLGRASS Dealer Oe Chapter Six Maintenance Replacement Parts Parts List for the TG 3000 3100 Series TALLGRASS P N 0 64 1064 1206 0 64 1064 1212 0 64 1064 1220 0 64 1064 4535 0 64 1064 4570 1 75 1035 1000 1 75 1035 1200 1 76 1035 1202 1 76 1035 1301 1 76 1035 1302 8 98 2031 0630 CABINET PARTS AND HARDWARE Description Front panel inlay TG 3006 Front panel inlay TG 3012 Front panel inlay TG 3020 Front panel inlay TG 3135 Front panel inlay TG 3170 Top cover series TG 3000 3100 Bottom chassis series TG 3000 3100 Heatsink regulated power supply Left T controller support bracket Right T controller support bracket Replacement hardware package The replacement hardware package contains ea Machine screw 6 32 x 1 4 ea Tape drive mounting spacer 3 8 dia ea 6 flat washer Sn wm TALLGRASS P N 8 96 1999 3000 8 99 1071 9000 8 99 1099 0014 99 1999 0014 Part number ea 6 internal tooth lock washer ea Hex machine nut 6 32 x 5 16 ea Fuse MDL 3 4 amp slow blow POWER SUPPLY ASSEMBLIES Description Backpanel regulated power supply assem bly and transformer for TG 3000 series Switching power supply for units equip ped wit
30. e System Insert a prepared tape cartridge Seetion 4 4 into the slot Executing the TAPE program will result in the menu shown in Figure 4 3 36 TALLGRASS TECHNOLOGIES CORPORATION Cartridge Tape Backup Facility IBM Personal Computer 12 meg Version 4 06 Rewind the tape Fast forward Save disk to tape Verify tape can be read Erase tape Certify tape Q Quit R F S U Unsave tape to disk V E C Enter your selection Figure 4 3 The TAPE Menu The CERTIFY Feature CERTIFY is an extensive test of the tape drive tape eartridge controller and interface electronics It is also a DESTRUCTIVE exercise i e it writes and reads its own test data to and from the tape It is important therefore that the tape does not contain vital data as it will be lost Select C for Certify tape During the Certify exercise each action being performed will be listed on the lower left hand corner of the screen Also during any tape motion the sereen will display position error and other informational codes Table 4 1 If any errors are detected by CERTIFY a listing will appear at the end of the pass More than one error per tape track is unaccept able If this is the case try a new tape Cleaning the tape drive will sometimes help The Certify exereise takes about ten or twenty minutes to complete one full pass depending upon the drive capacity CERTIFY will continue to run indefinitely until interrupted by depressing t
31. entry in the directory created by DOS is 32 bytes long and contains the file name and extension if one exists an attribute byte designating hidden or system files the date the file was created the first Allocation Unit number and the file size in bytes DMA Direct Memory Access A technique of data transfer in which the host CPU will issue a single transfer request for a large block of data The CPU does not service the peripheral device again until the entire data block has been transferred allowing it to perform other operations being requested The TALLGRASS DMA controller provides for chaining which permits multiple blocks of data to be transferred to main memory with a single CPU command EOT End of tape ERROR Any condition which exists in the hardfile system that may cause the improper reading or writing of data FORMAT A special non data syne character or preamble which is encoded by the controller in order to separate data blocks The preamble or format character typically 128 bytes long is written immediately preceeding each 10K byte data block GCR Group Code Recording A method of data encoding in which each byte of data is split into two 2 four bit nibbles and then translated into a five 5 bit code by accessing a translation table found in eontroller ROM This encoded data is then written onto the disk media as a serial string of bits The reading of data from the disk media employs the inverse of
32. eu SII 09 8S DWA PSZ FIZ 20 LZI LOT Qing 3e unurxeu A3TPTUNY satzeqta2 91n3eiedue3j 3U31que s3uawa1tnb31 e3ueuuoitAug3 sju3ws nbal 1e od 6 000P 3L NETT OOTE O00 DL a x H X M 3215 TeotsdAug S 30T Y T oud I HO0I X T 6 pug S31q 8 ueds U0T3931109 s31q 81 ueds uor35 3 q S3TQ OF uabuel 223 2U2 1013U0 201213 edej pue ys q eIpeu pergr enb 313 3233 p pa1J13185 Jo asn saunssy 01 301 UT euo UPY e3JOU ZOU 939 21 101219 lIqeji A002 1 uoN 8 301 UT euo uey 2104 30U aJel 10118 aTqezaacoday T u25 000 OT 93 qM ZI 3006 y Soz S8 00 60 S t 8 009 O9L EES ZI OPZ OI 096 OF OFZ OT 87S BOC ET 726 OT 889 p 726 OT STe T 90t c 0t 51 ZTeuuns SUOTIESTITISas 29 epo Bbutp o o3ay 000 0I 144 31suep burpiooeu 93 quW ZI Ajtoeded peiaeuaog 3006 S S31q 93 3 1egsueij r syoeIL eATIg ede soz su xew y s S8 su bae y3as 00 su x5ez3 Juadelpe y s 60 S S QW 2791 1egsuei3 C 8 su oue3el bae 009 peeds 301 s gt ueujI0oJ sa 088 997 9 2AT1P ied Ovz OT peay 13d ost oz JSpurT A gt aed OPZ 0Il y2oe13 13d pe33e uioj r97 789 9 SATIP 13d 726 OT peay ied yre tz jeputTAd ied 726 OT x gt e13 aed pe33Puiogun sa34q ytdedey abe1035 719 SxADP1L 90 S19PuTTAD r4 Spes I s aJJeld 900 51 2TIIPI1PE VII NOTES Chapter One Hardware Installation 1 1 The Powe
33. he ESC key One pass of CERTIFY is usually sufficient to insure the integrity of the Tape System 37 POSITION CODES DURING TAPE MOTION BOT Beginning of Tape EOT End of Tape WZ Warning Zone tape leader RZ Recording Zone e Normal record Wrong Record Missing Record W Missing Records unrecorded tape T Disk Seek ERROR CRC ERROR Reading Tape D Deeoding ERROR Reading Disk Dummy Record used in lieu of a BADTRACK on the Disk Drive Table 4 1 Always advance the tape to either BOT by Rewinding or EOT by Fast forwarding following completion of a tape session Power failure surges etc may cause undefined tape drive action which can result in the destruction of data While at the BOT or EOT the tape is in a region where data is not written and is therefore safe The tape cartridge can be safely removed from the drive at any time that BOT or EOT is displayed and tape motion has ceased CERTIFYING TAPE TRACK 0 PASS 00 WRITING TOTAL ERRORS 0000 WZ RZ m e e e m e Suse MA BT FAST FOWARD EOT Figure 4 4 Typical display during CERTIFY 38 Other Features In addition to CERTIFY the TAPE Program provides other features for tape operation which are described here REWIND and FAST FORWARD These features are similar to those found on common home cassette decks with one important difference once init iated they will run to completion with no pr
34. he Teehnieal Support Specialists ean usually diagnose your problem over the telephone and make recommendations on how to obtain best HardFile performance This troubleshooting service is also available outside of the U S via telex When calling for assistance on the telephone if possible move the telephone near to your eomputer system This will allow you to issue test commands to your system in order to determine the source of the problem Below is a suggested list of items to have on hand to expedite the troubleshooting process 1 The model and serial numbers of your HardFile 25 The version number of the TALLGRASS Software you are using This number ean be found on the label of the diskette that was sent with the unit The version number on the screen may not correspond with the release version number printed on the diskette 3 The type and version number of the Operating System and Application Software you are using 4 A list of options or other peripherals currently in use with your system 5 5 Application Software Many types of software and software packages are available on the market today Understandably not all are compat ible with each another If you experience problems using the HardFile with different software packages consult the Sections on DMA operation and I O addresses 7 1 amp 7 2 Some programs make use of the Interrupt System and or DMA which can create conflicts between the program and the HardFil
35. hout regulated power supply assemblies Regulated power supply Disk 5 12 Volts Regulated power supply Tape 5 24 Volts 8 96 1999 3000 backpanel regulated power supply consists of part numbers 8 99 1999 0014 and 8 99 1099 0014 regulated power supplies fuse holder power switch power transformer wired for U S power and the line cord Note that part numbers 8 99 1999 0014 and 8 99 1099 0014 may be purchased separately od TALLGRASS P N 1 27 2025 0934 1 27 2025 1220 1 27 2025 1350 1 27 2025 3634 TALLGRASS P N 0 77 1023 2006 0 77 1023 2012 0 77 1023 4020 0 77 1069 9415 D TT TIT IT 0 78 1039 9020 0 78 1039 9045 8 99 1999 0011 8 99 1999 0012 8 99 1999 0013 TALLGRASS P N 0 65 1064 0250 0 65 1064 2181 8 88 1035 0007 8 88 1035 0008 8 90 2033 3000 8 93 2060 3006 8 93 2060 3135 8 93 2060 5000 CABLE ASSEMBLIES Description Ribbon cable assembly disk to control ler 34 conductor 9 inch Ribbon cable assembly disk to control ler 20 conductor 12 inch Ribbon cable assembly tape to control ler 50 conductor 13 inch Ribbon cable assembly controller to DMA interface circuit board 34 conduc tor 36 ineh MAJOR SUB ASSEMBLIES Description 6 25 Mb Disk Drive Miniseribe Model 2006 12 Mb Disk Drive Miniseribe Model 2012 20 Mb Disk Drive Miniseribe Model 4020 35 Mb Disk Drive CDC MODEL 9415 5 70 Mb Disk Drive Vertex Model Tape Drive TG 3000 series Archive Model 90
36. ides into the grooves Little resistance will be encountered as the tape is inserted the first inch into the slot At that point resistance will be felt as the holding latch comes into contact with the cartridge Even pressure on both sides of the cartridge will result in the final seating and securing of the cartridge in the tape drive The cartridge will then snap into position When the cartridge is properly inserted it should be secure and held captive by the spring latch Removal of the cartridge will require a moderate pull sufficient to overcome the spring latch DO NOT remove the cartridge from the tape drive while the tape is in motion 4 4 Tape Drive amp Tape Care The reliability of a device is only as good as the care with which it is treated If you contaminate the gasoline for your car with water it soon fails If you do not clean the windshield it becomes impossible to see through If you expose the oil to extreme temperatures it soon breaks down So it goes with tape drives The tape media must mever be touched the drive must be kept clean and the operating temperature range always adhered to Presented here is a set of guidelines which when followed will insure high reliability and long life for your tapes drive and precious data they contain Tape Cartridge Handling Preparation and Storage Handling NEVER touch the recording media in any way NEVER manually advance the tape from one hub to the other
37. iey conennosrcarseso css VA Specifications Sw EY os tses vtse seat ousaeeewe Vaal Chapter One Hardware Installation 1 8 The Power SOUTCO sisi The Operating Environment Your PC Configuration Interrupt Request wenn LAO AQUFeSSEB cee neeuwsewnas Installing The Interface Cirevit Board csssevvienacecd POWBF US i 104s0024 08 Ged 0de ttet C5 2 I I Chapter Two Software Installation 9 21 Chapter Three Chapter Four bdo bo b b b2 b2 b t bY 3 3 E TTE m 4 monn C amp Co tO TALLGRASS Software Diskette 9 The TGSYS Program ccccscecsll Verify Read After Write 17 Duplicate Direetory o o 18 Cache Memory oocomsosmmecs18 Landing Zone sciscescvivavcesld Drive Designations 19 Allocation Unit Size sii 20 Directory Size sn emisiones tl HardFile Diagnosties 23 29 2 THe UTILITY BPORPE u cw te The SPEEDTST Program 5 05 27 Backing Up On Tab 31 17 Why Use a Tape Drive un 200 LADO QOBPIPIOES usa dl the Tape Drive ssescavecwwesed Tape Drive 4 Tape Care 33 Streaming Tape Versus Pile BysFile ocurra 90 The TAFE Progro 22445 60 a en The TGTAPE Program 005 044 IGBACRUP on ou eee sl eeu se 19 TOBERION 66404 44000 404 640002 oe A0 0 TAPEDIR q KEEN ROS ER Ow Bee wR LEE Table Of Contents con t Chapter Five Having lroUubleTo isswuesunasect9 952 5 1 HardFile System Trouble Chart carreras dd
38. iting for Winchester Power Up for approximately two minutes after which time it will abort and default to non modified DOS da Obtain an A gt prompt on the display and type the following command TGSYS then strike the RETURN key The program will respond with the message in Figure 2 1 that warns you to exercise care when running the TGSYS program Strike any key to continue into the program TALLGRASS TECHNOLOGIES CORPORATION HardFile Configuration Routine for the IBM Personal Computer version 4 04 Place a PC DOS boot diskette in drive a Consult the IBM DOS manual for instructions on creation of boot diskettes FCATUTION Changing the size of the directory allocation unit or sector size REQUIRES THAT THE HARDFILE BE REFORMATTED Consult the user manual on use of the Tallgrass UTILITY program for reformatting Strike any key when ready Figure 2 1 TGSYS Caution Message 2 2A TALLGRASS Version 3 XX Support for IBM PC DOS Version 1 10 Partitioning the HardFile The next display Figure 2 2 will report the size of the HardFile in use and the maximum number of logical drives permitted An arrow indicates which parameter or option has been selected for modification The program only res ponds to the following keystrokes Adds the storage space of one logical drive or disk surface to the storage space of the logical drive pointed to by the arrow Every time the 4 key is pressed the storage
39. ize the HardFile as you have eonfigured it The following steps are required to start the TGSYS program ly Place the TALLGRASS Boot Diskette into drive A gt of the Personal Computer Boot the system on the TALLGRASS Boot Diskette and observe the following A The system will report the status of the various options which should now all be OFF 11 B The system will display a CRC Cyelie Redundancy Check time within the range of 11 45 to 13 98 ms milliseconds The system will check the HardFile motor speed and display a hex number in the range of D620 to D660 D630 is typical D650 for TG 3135 70 Ds The system will declare that the HardFile configuration data is not available This is because the TGSYS program has not yet modified the DOS to recognize the HardFile NOTE IF THE HARDFILE IS NOT POWERED ON BEFORE BOOTING THE SYSTEM WILL REPORT A CRC TIME OF 1 MILLISECONDS AND THAT THE CRC GENERATOR IS BAD IF THIS OCCURS IT WILL BE NECCESARY TO REBOOT THE SYSTEM AFTER THE HARDFILE IS POWERED UP THE SAME CONDITION WILL OCCUR IF THE INTERFACE CABLE IS NOT PROPERLY CONNECTED TO THE HARDFILE INTERFACE CIR CUIT BOARD AT THE REAR OF THE PC IN THIS CASE HOWEVER A CRC TIME OF 0 MILLISECONDS WILL BE DISPLAYED After the system has displayed these messages it will continue booting and finally ask for the date and time This will only occur under the TALLGRASS 3 XX version The TALLGRASS 4 XX version will report Wa
40. king Up On Tape instructs the user on fundamentals of the tape system and user application programs for tape backup Both Streaming and File By File methods are discussed Chapter Five Having Trouble assists in locating and correcting problems associated with installation and normal operation of the system Chapter Six Maintenance describes procedures for obtaining service on the HardFile System Chapter Seven Programming Notes provides hints to the new user for full utilization of your system NOTES Introduction This manual provides detailed procedures for installing configuring and operating your new system Your new TALLGRASS HardFile Subsystem brings powerful Winchester mass storage technology and streaming tape backup to the Personal Computer The options available allow customized design of the HardFile configuration Wide versatility is available in adapting your system to the needs and requirements of your own applications The installation and configuration exercises in this manual will ereate a customized TALLGRASS Boot Diskette Using the procedures outlined you will find your new integrated system performing your specific application requirements through this newly created TALLGRASS Boot Diskette Il NOTES Table Of Contents page Preface RO wie N ANA rara 9 bee Introduction Table of Contents Ud Ad EE 15 BES Rodi fe en we Doo TTT WAR S eE Q Sp pi an EN Warranty Terms and Pol
41. led in the CPU s main memory Also known as IPL or Initial Program Loading BOT Beginning of tape BUFFER An area of storage or memory that temporarily holds data to be transferred to or from the CPU or any other I O device BYTE A group of eight bits or binary digits CACHE MEMORY A method of improving the effective data transfer rate to and from the CPU essentially hidden and transparent to the user The likely reuse of data requested by the CPU is anticipated by copying that specifie data into an area of main memory that has been allocated as cache memory CPU Central Processing Unit CRC Cyelie Redundancy Check A method of data validation in which all characters of a data block 10 K bytes are treated as a serial string of bits representing a binary number This number is divided modulo 2 by another binary number which is determined by controller hardware yielding a remainder which is the CRC character This CRC character 40 bits is compared to a check character which has been calculated by the controller in a similar fashion If the result of this comparison is true the data is assumed correct if false the controller repeats the operation CRC TIME The amount of time required to generate a CRC for a single data block 57 DIRECTORY A portion of disk media used by DOS and other operating systems to create an index for the data found on that logical drive The DOS directory is organized by file name Each
42. led in the Per sonal Computer 3 Connect the power cord into the provided socket on the rear panel of the HardFile System 4 Insert the plug on the other end of the TALLGRASS power cord into the desired A C receptacle 1 7 Power Up Ln Turn on the power to the System Unit of the Personal Computer and allow it to run through its usual diagnostics Insert a DOS diskette into floppy disk drive A gt and boot up the system 24 Using the power switeh loeated on the rear panel turn on the HardFile System and observe the following a The HardFile System will make a soft ratcheting sound This is part of the tape drive initialization sequence You should also hear a whirring sound eminating from the HardFile This is the sound of the internal Hard Disk Drive spinning up to speed b The Decoder Error lamp on the front panel of the HardFile System may be either on or off The indication of this lamp becomes valid only after a Read Write Access e The Head Select lamps will be off indicating that head zero is active In order to reduce the possiblity of erroneous control signals being sent to the HardFile System be sure to power down the HardFile first and then the Personal Computer Powering up the system is most reliably accomplished by turning on the Personal Computer before turning on the HardFile This completes Circuit Board you to test installation of the TALLGRASS Interface The UTILITY program Chapter 3
43. luctuations Use of the Landing Zone option causes the read write heads in the HardFile disk drive to automatically retract after six seconds of inactivity to a track not normally used to store data The user has the option of turning it on or off because use of this option may detract from access time performance in some applications If the Landing Zone option is not enabled the Landing Zone action can be manually accomplished by running the SPEEDTST program and choosing the L option MOVE TO LANDING ZONE This positions the read write heads so that the HardFile can be safely powered down Use of this funetion does not effect the setting of the Landing Zone option in TGSYS NOTE Landing Zone may be turned on or off through TGSYS program without reformatting HardFile Table 2 2 lists the track number used for the landing zone in each TALLGRASS model MODEL NO TG 3006 TG 3012 TG 3020 TG 3135 TG 3170 LANDING ZONE TRACK XXX TABLE 2 2 2 7 Drive Designations After you have completed setting the various HardFile op tions continue configuring by pressing the RETURN key to allow the arrow to be positioned to the first logical drive Under DOS 1 1 the drive designations may be selected by the user under DOS 2 0 the drive designations are permanently set as C D E and F depending on how the HardFile is partitioned and there is no user input If you are under DOS 2 0 proceed on to Allocation Unit size The
44. ly destroying data by over writing it with new data or by erasing it TALLGRASS Software carefully observes this feature by requiring that the tape be SAFE PROTECTED to be read from as in an UNSAVE operation and conversely not SAFE PROTECTED prior to writing to it Figure 4 1 31 Safe Button amp D SAFE SAFE NOT SAFE PROTECTED SAFE PROTECTED i e can be read from i e can be read and written to from ONLY The position of the Safe Button can be changed by using a small regular blade screwdriver or similar instrument thin coin Simply insert the serewdriver into the slot and rotate it 180 degrees in either direction until it snaps into position Figure 4 1 Tape Cartridge Detail 4 3 The Tape Drive As with the Tape Cartridge the Tape Drive is a delicate instrument and should be treated accordingly Please take a moment to familiarize yourself with Section 4 4 if you haven t already done so Insertion and Removal of the Tape Cartridge Ds The tape cartridge slides into the tape drive by means of grooved tracks on either side of the tape drive in the cabinet tape slot The aluminum base of the cartridge forms ridges on the bottom edge which slide into the grooves on either side of the tape slot in the tape drive A tape cartridge should be inserted now to allow further testing 32 2 A spring loaded door on the right front of the tape cartridge swings open inside the slot as the cart ridge sl
45. n which the operation is being performed Da Total Errors refers to the number of errors identified during the operation E Pass refers to the number of completed exercises over all tracks on the head currently displayed F The area of the display where errors are listed in the form Trk hd Err type 032 00 002 C 24 Refer to Table 3 1 for the list of error types Error Types Type Description CRO Error Decoder Error Read Error Track Error Write Error zuamwuo Table 3 1 I INTERFACE TEST The INTERFACE test is used to verify the integrity of the HardFile interface It exercises the interface logic and performs a read write test on the buffer within the Hardfile The interface test does not write or read information from the disk Should the HardFile fail the INTERFACE TEST further testing is point less until the cause of the failure is corrected The INTERFACE test should run for at least five minutes without any errors You may exit the Interface Test at any time by striking the ESCAPE key EB READ TEST The READ test is used to verify the ability of the HardFile to read all disk drive surfaces This test should be allowed to continue until all tracks and surfaces have been tested This test is a non destructive test i e it will not harm the integrity of data stored on the disk surfaces When running the READ test for the first time after the completion of the TGSYS program the system should display few
46. ned from TALLGRASS Any returned equipment must be sent to TALLGRASS freight prepaid and the shipping container must prominently display this RMA number The equipment will be Repaired or Replaced at the option of TALLGRASS and will be returned to you freight prepaid Should TALLGRASS examination and testing not disclose any defect TALLGRASS will so advise you and you will reimburse TALLGRASS 75 for the testing and handling expenses incurred For equipment incorporating a factory sealed enclosure containing but not limited to disks and heads this warranty is deemed voided if the enclosure has been opened or shows evidence of an attempt to be opened For equipment incorporating accelerometers to monitor for mishandling TALLGRASS reserves the right to automatically exclude from warranty coverage any drive whose aceelerometer indicates excessive shock due to mishandling or shipment in other than the original TALLGRASS supplied shipping containers Equipment should be shipped only in the shipping container it was originally supplied in If replacement shipping containers are required contaet TALLGRASS Customer Services to arrange for containers to be supplied CAUTION SHIPPING HARD DISK OR TAPE EQUIPMENT IN OTHER THAN FACTORY SUPPLIED CONTAINERS WILL VOID THE WARRANTY TALLGRASS will for no purposes be deemed to have any liability with respect to data contained in any equipment placed in its possession V This warranty is c
47. nts of a 10K RAM buffer which is set aside in the PC If the comparison fails the system will rewrite the data up to three times before a DOS error message is returned IT IS NOT POSSIBLE TO SELECT THE VERIFY OPTION AND THE CACHE MEMORY OPTION TOGETHER ANSWERING YES TO ONE CANCELS THE OTHER NOTE THAT VERIFY MAY BE TURNED ON AND OFF THROUGH THE TGSYS PROGRAM WITHOUT REFORMATTING THE HARD FILE 17 2 4 Duplicate Directory The Duplicate Directory option in TGSYS allows the crea tion and transparent maintenance of a duplicate copy of the regular directory and File Allocation Table FAT of each declared drive This duplicate copy is updated each time the regular directory is updated The purpose of the duplicate directory is to safeguard the contents of the disk drive in the event of loss or damage to the regular directory Since the directory FAT is often the most frequently accessed portion of the drive surface and because the read write heads are often positioned over the directory FAT when the drive is not being accessed the directory FAT is especially vunerable to power loss hard ware failures and software mistakes The TALLGRASS supplied COPYDUP command may be executed to restore the directory if one of the following conditions occur His If an abnormal format or abnormal characters garbage appear in the directory De If the DOS CHKDISK command indicates an error 3 If the PC beeps during a directory FAT access 4 If
48. ontingent upon proper use in the application for which the equipment was intended and does not cover equipment which was modified without TALLGRASS approvel or which was subjected to unusual physical or electrical stress EXCEPT FOR THE EXPRESS WARRANTY SET FORTH TALLGRASS GRANTS NO OTHER WARRANTY EITHER EXPRESSED OR IMPLIED ON EQUIP MENT INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS AND THE STATED EXPRESS WARRANTY IS IN LIEU OF ALL LIABILITIES OR OBLIGATIONS OF TALLGRASS FOR DAMAGES INCLUDING BUT NOT LIMITED TO CONSEQUENTIAL DAMAGES OCCURRING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF TALLGRASS PRODUCT VI awr3 bur 33es BUTPOTOUI zu 1499 000 01 93 qW Sp 3006 6 08 ot xxx00 0I 60 S 8 009 O9T1 BPL OL OPZ OI 089 TL Oz OT 860 09 SL CES 01 Pob 9 z26 01 606 9 L86 L y OLTE DL 19 000 0T 93 qW St 2006 6 06 St 4 200 6 60 S C 8 009 t 00r 989 SE Ovz OT 007 TS Ore OT 0L1 t90 8 776 OT O19 S 776 OT Sgt t L69 S t StIt 5L uS 0I X ButTsuspuos uou j saaibap sy bursuepuo uou 08 8 ueuuo291 4 SISIBIP 06 05 pep KS G X uS CE X aS S X 0 u 000 01 234qn ZI 3006 OTE OZT x00 60 S Et 8 009 t 008 099 61 o 7 o1 096 0p OPZ OI 0yz 0L6 0z 726 OT Bgs tr Tz6 01 076 1 08 y c 0z20 951 eura bur 339es INOYITM ys uwnurx
49. operate in the same manner as with TAPE TGTAPE however does not support the SAVE and UNSAVE features Instead refer to Sections 4 8 and 4 9 on the use of TGBACKUP and TGRESTORE both also require 128K and PC DOS 2 0 which provide for individual file manipulation The Interface Test The tape Interface Test operates much the same as the UTILITY Interface Test That is it tests all the inter face logie to the tape drive just short of putting the drive into motion It will run until interrupted by ESC Figure 4 7 All position codes have the same meaning as in Table 4 1 44 TESTING INTERFACE TAPE TRACK 0 1 1 0006000000000000000000000000000000000100000000000000000000 e o oe e 0 e e 0 0 0 0 0 e e Q Q e bh e 0 0 0 0 0 0 0 0 0 Q 0 0 Q p 0 0 0 0 q 0 e 0 0 e 0 0 e e e e q a Qe e 0 0 e aR 0 Q qe qe amp e q a e e Q ea Q e e e e Q o 0 0 0 E q qe aR e e ee oe onaeo Figure 4 7 Tape Interface Test 4 8 TGBACKUP TGBACKUP provides you with the means to backup a parti cular file or files from any disk drive hard or floppy to the tape TGBACKUP follows much the same format as the PC DOS 2 0 BACKUP Fixed Disk Command The format for TGBACKUP is TGBACKUP d path filename ext Tn S M D mm dd yy where indieates an optional parameter d is the logieal Souree Drive n is the Destination Tape Track number 0 3 12 20Mb amp 0 8 35Mb and above S M D operate a
50. orward ERASE once initiated cannot be stopped Consequently think twice before Erasing The cartridge must not be SAFE PROTECTED ERASE takes two minutes 43 Exiting The TAPE Program QUIT exits TAPE and returns control to the current operating system in use Use of ESC The ESC key will return the user to the menu or to a different level of the program depending upon which point in the program it is used Since some features Rewind Fast forward amp Erase are non interruptable there may be no immediate response to the ESC key These features will run to completion before ESC is recognized and tape motion stops The UNFTAPE Program The TAPE Program can only operate under the DOS for which it was designed UNFTAPE is provided as a basic HardFile to Tape Backup System alternative UNFTAPE is unformated and makes no attempt to consult a file directory or to understand drive designations The user is prompted to decide which surface to save to which track UNFTAPE has no recovery capability other then disk platter to tape track UNFTAPE should NOT be used by PC DOS or CPM 86 users It is intended for use with other operating systems that may lack support for the TALLGRASS tape devices 4 7 The TGTAPE Program The TGTAPE Program which requires at least 128K of RAM and operates under PC DOS 2 0 is very similar to the TAPE Program Those features common to both Rewind Fast forward Verify Erase Certify and Quit
51. ous combina tions When you have decided on a combination press the ESC key The system will record the information and display the default HardFile configuration shown in Figure 2 3 It is recommended that a hardcopy printed or written be made of the Partition information If it becomes necessary to setup the HardFile after a system failure this hardcopy will provide the previous setup information Configuring the HardFile The configuration portion of TGSYS responds to the the following keystrokes SPACE Moves the arrow from one catagory to another within BAR a group Changes the default parameter to the one desired RETURN Causes the arrow to move to the next group ESC Pressing the ESCAPE key causes TGSYS to record the configuration information in the newly created TGCONFIG DAT file on the TALLGRASS Boot Diskette The system will then exit the TGSYS Program and enter the UTILITY Program The ESC key will only cause this aetion when the arrow is positioned to Done Refer to Figure 2 3 If this is the first time TGSYS has been run proceed to Chapter Three HardFile Diagnostics and refer to Section 3 1 for use of the UTILITY program Upon completion of the checkout proceedure outlined choose the QUIT function and press any key to reboot the system This allows the new configuration data to be recorded on the HardFile If this is not the first run just choose the QUIT function and press any key to reboot Desc
52. ovision to stop them Each takes roughly one minute to complete To SAVE or UNSAVE The features SAVE and UNSAVE provide you with the capability of backing up SAVE the contents of a HardFile logical drive to tape and restoring UNSAVE the saved data back to the HardFile In Chapter Two Software Installation use of the TGSYS Program was described in much detail It explained how to partition the HardFile into different logical drive config urations There is a direct correlation between the HardFile configuration and the use of SAVE UNSAVE It is important to realize that SAVE and UNSAVE operate on the ENTIRE logical drive That is an image of the data reeorded on the logical drive is written to tape including the BADTRACK File Chapter 3 the Directory and the File Allocation Table For this reason tapes made on one HardFile System cannot be unsaved to another HardFile unless the Drive Configuration and BADTRACK File are identical ALL the files of the particular logical drive chosen are saved or unsaved Individual files cannot be manipulated with SAVE and UNSAVE If individual file access is required the commands TGBACKUP and TGRESTOR Sections 4 8 amp 4 9 should be used instead Listed in Table 4 2 are aspects of some different configu rations Although Table 4 2 depicts a 12 12Mb system the principle remains the same for other systems 39 Possible Configurations for a 12 12Mb System N
53. r but must all be present if you are to take full advantage of the software features Finally the last row of information in the table directs you to the section where you can obtain more detailed information and direetions for running the TGSYS program associated with each TALLGRASS version IBM PC DOS IBM PC DOS IBM CPM 86 T I MS DOS VERSION 1 10 VERSION 2 00 VERSION 1 00 VERSION 1 25 TG VERSION TG VERSION TG VERSION TG VERSION 3 XX 4 XX CPM 86 3 XX MS DOS 3 XX UTILITY COM UTILITY COM UTILITY CMD UTILITY COM TAPE COM TAPE COM TAPE CMD TAPE COM COP YDUP COM COP YDUP COM TGSYS CMD COP YDUP COM TGTBIO COM TGTBIO COM WINCH CMD TGTBIO COM TGSYS COM TGSYS COM TGSYS COM SPEEDTST COM SPEEDTST COM SPEEDTST COM UNFTAPE COM UNFTAPE COM UNFTTAPE COM CONFIG SYS SECTION 2 2A SECTION 2 2B SECTION 2 2C SECTION 2 2D Table 2 1 By using the Tape Backup facilities of your HardFile System to temporarily store data under your current O S it is possible for one HardFile installation to support more than one O S It is also possible for data and programs filed under the various operating systems to reside on separate disk surfaces of the same HardFile System Changing to another O S simply requires booting your PC on the approp riate TALLGRASS Boot Diskette and accessing only the speeifie HardFile surface s The TALLGRASS TGSYS program helps partition the HardFile System and adjust the various operating pa
54. r Source When installing the TALLGRASS HardFile System consider where to obtain power to operate the system Although the HardFile is equipped with electronic switching power sup plies that provide precisely regulated D C voltage for the internal components like your Personal Computer the Hard File is still not immune to power interruptions or disturbances Air conditioners water coolers copying machines and other motor driven devices may cause unreliable operation if connected on the same power circuit If you choose to operate your HardFile with an emergency or uninterruptable power supply system be sure to choose a system that switches to backup power within four cycles or 64 milliseconds Before installing the HardFile System insure that the A C power receptacle for your system delivers 107 to 127 volts A C at 50 or 60 Hertz If the power available at the receptacle is consistently lower than 110 volts the Hard File can be adjusted to accommodate a low line condition of 98 to 118 volts This change must be performed by qualified service personnel If the A C line voltage input to the HardFile is too high the internal power supply regulators will overheat if the voltage is too low power supply output will be poorly regulated causing abnormal HardFile operation Since the internal components of the system operate from D C power HardFile operation is not dependent on power line frequency The A C power eircuits of
55. rameters It automatically determines the size of the HardFile System connected This allows a single version of TALLGRASS Soft ware for the O S selected to be compatable with all models in the TG3000 3100 series of equipment Before running the TALLGRASS TGSYS program you must first create a system diskette using the following step by step procedure ls Obtain a new blank floppy diskette 2 Using the DOS FORMAT command format the new disk ette with the DOS on it To use the FORMAT command there must be a file on your DOS diskette named FORMAT COM Use the S option on the FORMAT command to install the DOS as the diskette is being formated To use the S option on the FORMAT command there must be a file named SYS COM on your DOS diskette Refer to your DOS Operation Manual for more detailed information on the use of the FORMAT command You ean verify that DOS has been transferred to the new diskette by obtaining a directory of the new diskette and observing the presence of the file named COMMAND COM When creating a system diskette under CPM 86 the NEWDISK command with the S option is used for formatting Consult the CPM 86 Operation Manual 3 Using the DOS COPY command copy all of the files from the TALLGRASS Software diskette to the new diskette Example Assuming that your system has defaulted to the A gt floppy disk drive use the following command syntax COPY s B then strike the RETURN key
56. ribed in Seetions 2 3 through 2 9 are the various options and parameters which must be set using TGSYS Of these Verify Read After Write Cache Memory Landing Zone and Drive Designations can be changed from their initial setting by running TGSYS again The HardFile does not need to be reformatted following any of these changes However the changing of Duplicate Directory Option Allocation Unit Size or Directory Size REQUIRES THAT THE HARDFILE BE REFORMATTED IN ORDER TO INSTALL THE RE DEFINED DIRECTORY OR DIRECTORIES 15 OPTIONS Press h for Help Verify read after write Duplicate directory Cache memory Landing Zone Done press ESC Designation Allocation unit Directory size Designation Allocation unit Directory size THREE Designation Allocation unit Directory size FOUR Designation Allocation unit Directory size Figure 2 3 HardFile Configuration Display After the various options and parameters have been set it is recommended that a hardeopy printed or written be made of the Configuration information If it becomes necessary to setup the HardFile after a system failure this hardcopy will provide the previous setup information 2 2B TALLGRASS Version 4 XX Support for IBM PC DOS Version 2 00 The steps to follow when running TGSYS are the same as for TG3 XX DOS1 10 see Section 2 2A The main difference occurs in the storage of the configuration data TG4 XX DOS2 00 does not create the file T
57. rity of the HardFile System The UTILITY program features are defined below in the order in which they should be executed following completion of TGSYS It should be noted however that the user may execute the UTILITY program at any time by causing the system to default to the TALLGRASS Boot Diskette and typing the word UTILITY followed by a RETURN TALLGRASS TECHNOLOGIES CORPORATION Utility routine for the IBM Personal Computer 12 Mb Version 4 05 Write test ERASES ALL INFORMATION ON HARD FILE Read test Checks ALL Information to see That It Can Be Read Format Certify ERASES ALL INFORMATION ON HARD FILE Examine specified track Interface test Directory re initialize B Badtrack display Q Quit Enter your selection Figure 3 1 The UTILITY Menu 23 Each of the following functions except Q have a similar display format Shown in Figure 3 2 is a sample display and a description of each field TALLGRASS TECHOLOGIES CORPORATION Utility routine for the IBM Personal Computer Pass 0000 TESTING Track 0001 Head 02 Total Errors 0000 Trk hd Err type Trk hd Err type Trk hd Err type O Press ESC Key to STOP Figure 3 2 Sample Display In Figure 3 2 A Name of the operation being performed is displayed B Track refers to the concentrie circles of the platter head on which the operation is performing analogous to tracks of a diskette G Head refers to the disk platter surface o
58. s ALL the files on that drive the SAVE feature in the TAPE Program Section 4 6 should be used When using SAVE to backup the UNSAVE feature also in the TAPE Pro gram must be used to recover the files from the tape Individual file recovery is not possible when backup was accomplished using SAVE The File By File method allows individual files or groups of files by using global characters to be backed up TGBACKUP Seetion 4 8 or restored TGRESTOR Section 4 9 using the Tape System If it is desired to backup all the files of a particular logical drive HardFile or Floppy and later recover them individually use the global file designation In this way individual files can be restored from the tape to any logical drive HardFile or Floppy in the system The File By File method makes it possible to backup to tape files from one HardFile System and restore them to another HardFile System his 18 accomplished by backing up with TGBACKUP removing the tape and replacing it in the new System and then restoring using TGRESTOR TAPEDIR Section 4 10 is provided to read the direetory of a tape track which was created using TGBACKUP Prior to running TAPE TGTAPE TGBACKUP TGRESTOR or TAPEDIR the computer must be booted up on a TALLGRASS Boot Diskette as discussed in Chapter Two Software Installa tion 4 6 The TAPE Program Operation of the Tape Cartridge System should be checked out following receipt of your new HardFil
59. s in PC DOS see your manual NOTE A add Append is not supported by TGBACKUP global eharaeters are allowed The filenames being backed up to tape will appear on the display before they are transferred copied to tape The message Track n has been loaded signifies the com pletion of the backup operation and shortly thereafter control returns to DOS TGBACKUP should be used wisely Once information is backed up to a particular Tape Track additional files cannot be backed up to it In this way file overwrite protection is preserved If an attempt is made to backup to an already occupied Tape Track the following response will appear Tape needs to be erased Before Erasing remember the Erase feature erases the ENTIRE tape If the quantity of data being backed up is too large to fit on a single tape track the overflow data will be automati cally backed up onto the next track It should be noted that the next track is now occupied therefore it cannot be used for further backup See Table 4 3 for the list of error messages TGBACKUP and TGRESTOR Error Messages Bad Track Number Out of Tape insufficient space on track for makeup records No more records on Tape Bad Read Write Error cartridge may be SAFE PROTECTED Tape needs to be erased No records on Tape blank tape Table 4 3 4 9 TGRESTOR TGRESTOR is used to retrieve files from tape that were put there with TGBACKUP TGRESTOR follows mu
60. s of the disk unit With the Self Step option stepping begins in response to setting the Step bit in the Control 2 Register A physical read write operation occurs in response to set ting the Start bit in the Control 2 Register The R W operations begin automatically in response to Start and the host may monitor the R W Complete bit in the Status Register while waiting for the operation to terminate During data transfer of a R W operation the host should not accesss the track buffer of the addtess counter since that action would disrupt the proper functioning of the controller during the R W operation 65 PIN SIGNAL DESCRIPTION IN OUT LOADING Data Bus for all data amp status Goes minus during Seek Read Write or CRC generate Read CRC enable Gates selected CRC byte onto bus Read STATUS enable Places 8 bits of Controller or Drive status on the bus Read DATA enable Places next byte in the Buffer on the bus Write CONTROL 1 strobe Stores data which is on the bus into Control 1 Register Write DATA strobe Stores data at present addressed Buffer location Write Address High Used with CLK to preset MSB address into Buffer Address Counter Write CONTROL 2 strobe Stores data which is on the bus into Control 2 Register Write Address Low Used with CLK to preset LSB address into Buffer Address Counter CLOCK used to Count amp Preset Address Counters for the Data Buffer Clears Control Registers Coun
61. ster size or Allocation Unit size is the minimum number of sectors which may be assigned to a file This will result in wasted disk space when the file or file segment does not fill the Allocation Unit assigned to it in the FAT Allocation Unit sizes from which you may select are 2K 4K 8K 16K 32K and 64K Pressing the period key with the pointer at Allocation Unit will display these choices in succession as many times as needed The optimum Allocation Unit size is usually one that is closest in size to the files being written For example if the majority of files written are 14K in size then an Allocation Unit size of 16K is recommended Although 2K of space is no longer usable file access time is improved If the loss of 2K is undesirable smaller Allocation Units can be used If 2K Allocation Units were chosen seven 2K units will be allocated to form the needed 14K Since the linked Allocation Units are not necessarily in sequential order on the HardFile they must be searched for when following the links This searching increases the file access time thus decreasing system efficiency Allocation Unit size also affects FAT size Small Alloca tion Units require a larger FAT since there are more Allocation Units to record Larger Allocation Units result in a smaller FAT The FAT will consume 1 2K to 6K of main RAM space during each access Under DOS 2 0 Allocation Unit sizes are limited to 2 32K 20 2 9 Directory Si
62. t Enable Enables Buffer Address Counters to respond to CLK Used by Host for AUTOINC REMENT feature of WDS amp RDE 9 11 13 15 17 19 21 23 25 27 29 31 amp 33 are all GROUND Returns Figure A IV 1 I O Signal Definition Registers T 6 5 4 3 2 1 0 STATUS 1 R M Decoder TRK Seek Write Drive REGISTER Busy Error 000 Complete Protect Ready CONTROL 1 Head Head Head Head Backup Winch Drive Drive SELECT Select 3 Select 2 Select 1 Select 0 Enable Enable Select 1 Select 0 REGI STER CONTROL 2 Direction Step Reduce CRC Read 0 R W START i in Start Write I Start Write 1 Start REC STER Figure A IV 2 Register Definition 66 NOTES NOTES Sore ee y RS m SSS nen mt ne lt A AA Pe wc SS ii a os LT Dean ZA m A AZ A AZ gt a S T AAA ee Me A i sa
63. terface Circuit Board allows the host computer to exert control over the HardFile by setting and sensing the various control status and data bits within the HardFile s controller Figure A IV 1 The host interface and operating system is required to set control bits in two Control Registers read status bits from the Status Register Figure A IV 2 and read and write data bytes in the track buffer The Control Registers consist of octal latches and the host interface essentially has direct access to the data latch and clear pins on these registers RC noise filtering is performed on the RESET WC1S and WC2S lines on the Buffer Board to ensure clean proper control on the bus The Status Register is connected to a bi directional bus that is controlled by the RSE signal The data buffer is addressed by a 14 bit counter This counter may be preset to a given address by using CLR WAHS and WALS signals In this manner any byte s of a record sector or track may be accessed The address counter may be ineremented by a pulse on the CLK in conjunction with CE The host interface performs and auto inerement of the buffer address during a read or_write operation _by sending simultaneous strobes to the CLK and RDE or WDS lines while holding the CE line low To step the disk drive actuator mechanism in or out the host CPU must generate the individual step pulses and timing using the Step bit while observing the step rate specification
64. the HardFile System can also be adjusted for European power in the range of 196 to 254 volts 50 or 60 Hertz 1 2 The Operating Environment Like all electronic equipment the reliability of the TALLGRASS HardFile System can be influenced by certain environmental conditions Below are some recommendations to obtain maximum reliability and performance from your HardFile System 1 When installing the HardFile System be sure there is adequate ventilation to allow air to flow freely through the cabinet Avoid placing any object on top of or underneath the HardFile cabinet that would obstruct the flow of air EXCESSIVE HEAT MAY CAUSE THE HARDFILE ERROR RATE TO DETERIORATE 25 Place the HardFile System on a sturdy work surface Excessive vibration or shock can not only cause errors but may result in permanent damage to HardFile System 3 When transporting the HardFile System be sure to pack it in the original shipping container This container is designed to protect the Hardfile System from vibration and shock THE WARRANTY WILL NOT BE HONORED ON EQUIPMENT THAT HAS NOT BEEN TRANSPORTED IN A TALLGRASS SHIPPING CONTAINER 4 Do not allow foreign objects to enter the HardFile cabinet through the ventilation holes Metal items such as coins or paper clips will cause damage to the internal components 1 3 Your PC Configuration At least 128K of RAM must be available in your Personal Computer to operate the HardFile There are sever
65. the message File Allocation Table is Bad occurs COPYDUP should not be used casually since it involves possible destruction of recent directory information that might not be present in the duplicate The duplicate directory may also contain the same errors as the main directory depending on the cause of the error condition The Duplicate Directory option will significantly slow the effective throughput of the HardFile whenever the di rectory is being accessed NOTE The HardFile must be reformatted if Duplicate Directory is turned off or on after initial formatting reformatting will erase all stored data in the HardFile 2 5 Cache Memory Use of the Cache Memory option causes a 20K area of RAM to be reserved in the PC for use as a disk buffer This improves file and record access time in some applications by reducing the number of disk accesses per file Its use is best suited for seek intensive applications i e those applications that require extensive reading of a particular file or portion of a file to the HardFile IT IS NOT POSSIBLE TO SELECT THE CACHE MEMORY OPTION AND THE VERIFY OPTION TOGETHER ANSWERING YES TO ONE CANCELS THE OTHER CACHE MEMORY MAY BE TURNED ON OR OFF THROUGH THE TGSYS PROGRAM WITHOUT REFORMATTING HARDFILE 18 2 6 Landing Zone The Landing Zone option offers an extra margin of protec tion against loss or corruption of the directory in those areas that are particularly troubled by power f
66. tors near the rear of the PC chassis 3 Remove the screw that secures any one of the blank I O channel retaining brackets to the rear chassis of the Personal Computer Save the blank retain ing bracket and the screw 4 Insert the TALLGRASS Interface Circuit Board into any available I O Channel Connector except J8 of the XT Personal Computer making sure the edge connector of the circuit board is properly seated in the socket 5 Secure the retaining bracket of the Interface Cir cuit Board to the Personal Computer chassis with the same screw that was used to secure the blank retaining bracket DO NOT CHANGE THE DISK DRIVE SWITCH SETTINGS ON THE MOTHER BOARD OF THE SYSTEM UNIT TALLGRASS SOFT WARE PROVIDES FOR THE HARDFILE DRIVE DESIGNATIONS AND IDENTIFICATION Installation of the Interface Circuit Board is now com plete The cover for the Personal Computer should now be reinstalled and secured and the power plug may be reinserted into the A C receptacle outlet Final Connections l Position the TALLGRASS HardFile to the left or right of the Personal Computer Avoid straining the Interface Cable or pulling it taut Do not attempt to lengthen the Interface Cable between the Interface Board and the HardFile LENGTHENING THE INTERFACE CABLE MAY RESULT IN DETERIORATION OF THE SYSTEM ERROR RATE 2 Connect the Interface Cable to the black plastic D connector protruding from the rear of the Interface Circuit Board just instal
67. uld be in the range of 11 45 to 13 98 milliseconds L Moves the read write head to the Landing Zone Refer to Table 2 2 in Chapter 2 to determine the track number of the Landing Zone in the particular TALLGRASS model in use It is suggested that you land the heads before powering off the HardFile Q Exits the SPEEDTST program and reboots the system TALLGRASS TECHNOLOGIES CORPORATION Speed Test Routine for the IBM Personal Computer 12 meg version 4 04 SELECT MOTOR SPEED CRC TEST MOVE TO LANDING ZONE QUIT you selection Figure 3 4 The SPEEDTST Menu When using the M feature the following display results CURRENT BASE XXXX LAST GOOD XXXX LAST HANG XXXX where CURRENT BASE is an indication of the current motor speed This value will change as the program tracks minor variations in motor speed The value displayed should be in the range of D620 D658 28 LAST GOOD indicates a value in the range of D620 D658 This value should not change in the display LAST HANG indicates a value in the range of D620 D658 This value should not change in the display A value outside of the given ranges usually means that a problem has developed in the electronic tachometer circuit of the hard disk Contact your service representative to determine if a hardware malfunction has occurred and what corrective action is required NOTES 30 Chapter 4 Backing Up On Tape 4 1 Why Use a Tape Drive As you become
68. various parameters are now selected by pressing the period key repeatedly until the desired selection appears TGSYS checks the Disk Drive Switches on the main circuit board of the IBM System Unit to establish how many drives are in the system This causes the system to default to designations that are not already assigned to the system 19 Example If you have one floppy disk drive TGSYS will assume that this drive designation is A It also assumes that B is an imaginary drive Therefore TGSYS will cause the first logical HardFile drive to default to C Addtional drives defined by TGSYS will be assigned remaining designations TGSYS also checks for the existance of hard disk drive C in the IBM XT If it is present the first logical drive will default to D 2 8 Allocation Unit Size NOTE SELECT YOUR A U SIZES CAREFULLY CHANGING A U SIZES REQUIRES THAT THE HARDFILE BE REFORMATTED PC DOS MS DOS and most typical disk operation systems control the utilization of disk space by maintaining a table the File Allocation Table FAT which describes file areas for the entire disk In the case of a 320K floppy disk there are so few sectors 640 that each sector may be represented by a separate entry in the FAT In the case of a 20Mb HardFile however there are so many sectors 38 000 and so few FAT entries available 4096 max 12 bit entries or 6K that each entry is used to represent a eluster of sectors This clu
69. ze The number of directory entries should be chosen carefully The number of files to be created must be equal to or less than the number of directory entries If the directory is too small there may not be enough entries to handle the files If the directory is too large available HardFile space will be reduced i e for every 64 directory entries approximately 2K is consumed by the directory space Once directory space is exhausted it cannot be increased or decreased without reformatting that logical drive which will result in loss of access to the existing files on the particular logical drive e NOTES Chapter Three HardFile Diagnostics 3 1 The UTILITY Program The UTILITY Program is provided as means of formatting and testing the Hardfile UTILITY uses the configuration information that was entered by the user when running the TGSYS program Chapter 2 UTILITY when executed will attempt to find the configuration information in memory and if absent from memory on the TALLGRASS Boot Diskette UTILITY is the only means for installing empty directories on the logical disk drives designated by the user when running the TGSYS program Striking the ESC key at the completion of the TGSYS Program will record the configuration information on the TALLGRASS Boot Diskette and begin executing the UTILITY program Figure 3 1 automatically At this time the var ious UTILITY program features should be used to check the integ

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