Twin-X General Purpose I/O Board User`s Manual
Contents
1. 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 Table 8 H H O OH H QO o H H O OH H O o H O H O H O H O H O H O H O H o Chip Selects MCSO and MCS1 DO QO O O O O O L H M H M H o EH Address Lines MA4 MA3 MA2 MA1 MAO La H M H M H M EH L H M H M H o EH H H H H O O O o H H H H O O O o H H O OH H QO o H H O OH H QO o HO HO H O H o H O HO H O H o Chip Selects MCSO and MCS1 16 Bit Address Offsets With Extended Address Jumpers 24 USING MODULE DMA FEATURES 23 24 Using Module DMA Features The Twin X board does NOT support standard module DMA modes This is because there is no DMA on the Twin X board itself and the Zorro bus does not provide any DMA support Twin X does allow the DMA request line from each module to be connected to an Amiga interrupt line This is coupled with the ability to read the status port on the Twin X board to determine if the DMA request is the signal that caused the interrupt These two features allow the use of the DMA request to be used as an alternate interrupt Twin X also allows the interrupt to be serviced using an address that the module will see as a DMA acknowledge This allows automatic DMA support features within the chips on a given module to be used even though true DMA support is not available The DMA acknowledge addresses are listed in Table 9 8 Bit DMA Acknowledge Address 16 Bit DMA Acknowledge Address OxFD OxFC Table 9 DMA Acknowledge Port Addresses Part V S2. Amiga interrupt lines Allows Amiga access to the iSBX DMA acknowledge port for software flexibility Allows additional address lines to be connected to the module through the iSBX OPTO and OPTI lines Provides a 10MHz MCLK and supports use of MPST to determine if a module is installed 11 Interface Pinouts 11 1 Zorro Interface The Twin X supported Zorro interface signal lines are shown in Figure 5 below Pin Signal Pin Signal Pin Signal Pin Signal No Name No Name No Name No Name 1 Ground 2 Ground 51 52 A18 3 Ground 4 Ground 53 54 A19 5 5VDC 6 5VDC 55 56 A20 7 8 57 A22 58 A21 9 SLAVE 10 12VDC 59 A23 60 11 CFGOUT 12 CFGIN 61 Ground 62 Sge 13 Ground 14 pas 63 DLS 64 a 15 16 5 65 D14 66 1 7 18 XRDY 67 Di3 68 READ 19 INT2 20 12VDC 69 D12 70 LDS 21 A5 22 INT6 71 D11 72 UDS 23 A6 24 A4 73 Ground 74 AS 25 Ground 26 A3 75 DO 76 D10 27 A2 28 os 77 D1 78 D9 29 Al 30 ae 79 D2 80 D8 31 32 122 81 D3 82 D7 22 34 83 D4 84 D6 35 36 85 Ground 86 D5 37 Ground 38 87 Ground 88 Ground 39 40 EINT7 89 Ground 90 Ground 41 42 EINT5 91 Ground 92 252 43 a 44 EINT4 93 DOE 94 BUSRST 45 A16 46 BEER 95 E 96 EINT1 47 A17 48 97 is 98 49 Ground 50 Figure 5 99 Ground 100 Twin X Zorro Interface Signals 11 2 IEEE 959 iSBX Interface Connections The Twin X supported iSBX interface signal lines are shown in Figure 6 below Pin
3. J7 SBX GPIB Module Jumper Settings DIP Switch Or Switch Position Orientations Jumper Name And Jumper Shunts Required DS1 Switch Position No Switch Orientation 1 closed or ON O open or OFF Place jumper shunt in the NO position Don t care Normally left open Scanner DIP Switch Settings Scamner Type Switch Position Orientations JX450 Switch Position No 32 16 842 Switch Orientation 0 0 011 1 1 JX300 Switch Position No 8765 4321 Switch Orientation 0000 0111 1 closed or ON 0 open or OFF SHIPPING CHECKLIST FOR PROFESSIONAL SCANLAB Shipped Back Ordered Item Description Twin X Board with SBX GPIB Module SBX GPIB to Amiga 2000 Rear Panel Cable Two 2 4 40 x 1 4 Mounting Screws for above Cable External 2 Meter GPIB Cable Professional ScanLab Software Diskett Professional ScanLab Manual Twin X Manual Professional ScanLab Jumper Position Sheet Warranty Information Sheet Packers Signature Date Note To Customer Please compare the items you received with the items checked off as shipped and report any inaccuracies to ASDG Incorporated by calling 608 273 6585 as soon as possible after you detect the error Amiga Hardware World Everything about Amiga hardware http amiga resource cx
4. No NG W Rol 13 15 17 T9 21 Part III Signal Pin Signal Name No Name 12VDC 2 12VDC GND 4 5VDC RESET 6 MCLK MA2 8 MPST MA1 10 MAO 12 MINTR1 IOWRT 14 MINTRO IORD 16 MWAIT GND 18 5VDC MD7 20 MCS1 MD6 22 MCSO Figure 5 IEEE 959 Pin Signal Pin No Name No 23 MD5 24 25 MD4 26 27 MD3 28 29 MD2 30 31 MD1 32 33 MDO 34 35 GND 36 37 MD14 38 39 MD12 40 Al MD10 42 43 MD8 44 iSBX Interface Signals USER INFORMATION 12 Module Installation Ground 11 Each iSBX module that you receive should include a threaded nylon standoff and two nylon screws double wide modules should contain three sets of these Mount the standoff s to the module on the same side as the iSBX interface connector using the mounting holes provided in the module Snap the module firmly in place over one of the two blue connectors on the Twin X board If only one module is used it should always be placed in the Module 1 position on the Twin X board This applies to single and or double width modules The module may now be screwed in place using the remaining nylon screw s from the solder side of the Twin X board 13 INSTALLING CABLES AND BRACKETS 12 A double wide module will snap in place over the blue connector for Module 1 Two of its three standoffs will line up with mounting holes in the Twin X board Screw the module in place using nylon screws through these two holes 13 Installing Cables And Brackets Mod
5. cause damage to the module Address Lines Chip Select Lines MA2 MA1 MAO MCSO and MCS1 0 0 0 0x00 0 0 1 0x02 0 1 0 0x04 0 1 1 0x06 1 0 0 0x08 1 0 1 0x0A 1 1 0 0x0C 1 1 1 0x0E Table 6 iSBX Module Offsets For 16 Bit Accesses 22 TWIN X MODULE STATUS 21 22 Twin X Module Status Twin X has ports for reading the interrupt DMA request and Module Present status bits for each module The bit locations and the address of the port are in Figure 5 below The status port must always be read as a byte Status Port Offset From Module Base OxFE D7 D6 D5 D4 D3 D2 D1 DO DROT INT1 INTO MPST E Ras zi Figure 5 Twin X Module Status Port The DROT DMA reguest and interrupt bits are high true The Module Present STatus MPST bit indicates a module is in place when this bit is low The four least significant bits are unused and will not be in a definate state 23 Using Extended Module Addressing Jumpers J3 to J6 Installing jumpers J3 and J4 adds two more address lines to Module 1 and similarly installing jumpers J5 and J6 adds two address lines to Module 2 The additional address lines are not necessary for standard modules and may interfere with module operation if the module uses the OPT lines for any other signals These additional address lines will allow modules to be made which need more than 16 bytes of direct port addressing Table 7 below provides the address offsets from the module base address for 8 bit module
6. data bit 0 An open switch is a 0 and a closed or ON switch is a 1 These serial number values are used to identify the type of module present All Others 0000 0000 The rest of the config space is all 0 s 19 iSBX IEEE 959 Interface Overview The basic iSBX IEEE 959 interface is comprised of 8 or 16 data lines 3 address lines 2 chip select lines a WAIT line and read and write strobes In byte mode the two chip selects and three address lines provide a total of 16 possible register locations The two chip selects are driven at the same time to indicate word 16 bit mode accesses so there are still only sixteen bytes accessible addressed as eight words The iSBX IEEE 959 interface also provides two interrupt lines a DMA request line which is used as another interrupt source on Twin X a DMA acknowledge line which Twin X treats as another memory mapped chip select a 10 MHz clock line and a reset line controlled by the Amiga reset signal The Twin X board provides the option to connect two more address lines to the iSBX interface through jumpers J3 and J4 for Module Position 1 or J5 and J6 for Module Position 2 This increases the address space available for use on custom module designs but is not a part of the iSBX or IEEE 959 standard 20 Byte 8 Bit Mode Module Addressing Most iSBX module manuals define their module registers in relation to the three address lines and the two chip selects Below is a table o
7. module operation position This bit set indicates to the programmer that there are two config spaces on this board If J2 is in the lower single module operation position this bit will not be set and the second config space along with the module in Module Position 2 will not be seen by the Amiga The config space provides Amiga driver software with information on the board type the amount of memory space it occupies the manufacturer and a serial number The Twin X board uses the serial number space to pass the DIP switch and J1 jumper information to the software The software can use this information to determine what iSBX module type is represented by that data Twin X config data is as follows Nibbles Bits 7 to 0 Notes 00 02 1100 X001 Current style board don t link in memory free list size 64 kilobytes and the X is for the Chained Request Bit which is explained above 04 06 1111 1111 Product Number 255 08 0A 0100 0000 Any space is OK Cannot be shut up 0C 0E 0000 0000 Reserved 10 12 0000 0011 ASDG manufacturers id 14 16 1111 1111 18 1A 0000 0000 Serial Number byte 0 msb 1C 1E 0000 0000 Serial Number byte 1 20 22 0000 00XY Serial Number byte 2 X 1 for J1 1 2 connected X 0 for 1 2 open Y 1 for J1 3 4 connected Y 0 for 3 4 open 24 26 XXXX XXXX Serial Number byte 3 lsb Contents of DIP 19 ISBX IEEE 959 INTERFACE OVERVIEW 19 switches show up here DIP switch 8 is in data bit 7 and DIP switch 1 is in
8. most of the time 17 Installing Twin X In An Amiga 2000 A small to medium size Phillips screw driver is required to install a Twin X board in an Amiga 2000 Remove the screws along the bottom of the sides of the Amiga 2000 There are two screws along the lower edge of each side of the machine Remove the screw in the top center of the back of the Amiga 2000 This screw is located between a similar looking screw which holds in the top corner of the power supply and a smaller screw which holds the bracket for the coprocessor slot in place Grasp the cover on both sides and slide it toward the front of the Amiga 2000 and up Unscrew the bracket for the slot the Twin X board will be mounted in and remove it from the system Install the Twin X board in the slot you have decided on making sure that the board seats firmly in the connector Re use the screw you removed above to screw the Twin X board bracket in place Remove other brackets from the back of the Amiga as needed Replace them with the new brackets that have your Twin X I O cables on them Re install the cover of the Amiga by reversing the steps you used to remove it 18 Part IV PROGRAMMERS INFORMATION 18 Config Space The Twin X board has a separate config space for each of the two module positions The only difference between the two config spaces is that the config space for module will have the Chained Config Request bit set in nibble 2 if J2 is set in the upper dual
9. operation Notice that MCS1 cannot be turned on with MA3 and MA4 set This is do to hardware considerations on the Twin X board Address Lines Chip Selects Address Lines Chip Selects MA4 MA3 MA2 MA1 MAO MCSO MCS1 MA4 MA3 MA2 MA1 MAO MCSO MCS1 0 0 0 0 0 0x01 0x41 0 1 0 0 0 0x11 0x51 0 0 0 0 1 0x03 0x43 0 1 0 0 1 0x13 0x53 0 0 0 1 0 0x05 0x45 0 1 0 1 0 0x15 0x55 0 0 0 1 1 0x07 0x47 0 1 0 1 1 0x17 0x57 0 0 1 0 0 0x09 0x49 0 1 1 0 0 0x19 0x59 0 0 1 0 I 0x0B 0x4B 0 1 1 0 1 0x1B 0x5B 0 0 1 1 0 0x0D 0x4D 0 1 1 1 0 0x1D 0x5D 0 0 1 1 1 0x0F Ox4F 0 1 1 1 1 Ox1F Ox5F 23 USING EXTENDED MODULE ADDRESSING JUMPERS J3 TO J6 G W W W W W W EH space for module designers to work with DO QD O O O O O L L M M M M H Lo DO QO O O O O O H H H H O O O o NOTE Table 7 H H OO H H QO o vn H O H O H O H o 0x21 0x23 0x25 0x27 0x29 0x2B 0x2D 0x2F 0x61 0x63 0x65 0x67 0x69 0x6B 0x6D Ox6F HM M M M M M RE La H M H M H M EH RRRPRPOOOO H H O OH H O o H O HO H O H o 0x31 0x33 0x35 0x37 0x39 0x3B 0x3D 0x3F FF FF HO indicates that these positions cannot be accessed 8 Bit Address Offsets With Extended Address Jumpers 22 Table 8 provides the offsets for 16 bit accesses using the extended address lines Using the word 16 bit access mode with the extended addressing jumpers provides a total of 32 words of addressing Address Lines MA4 MA3 MA2 MA1 MAO 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0
10. parallel I O stepper motor con trollers IEEE 488 controllers SCSI host adapters analog to digital converters battery backed up RAM Modems prototyping modules speech synthesizers barcode readers floating point coproces sors floppy disk controllers digital to analog converters graphics controllers and Centronics printer interfaces Call ASDG for a partial listing of available modules and current manufacturers Let us help you find the module to fit your needs ASDG can also design modules and write software drivers to help you with your custom projects Part II SPECIFICATIONS 7 Electrical Specifications 7 1 Power Requirements Twin X Base Board 4 75 to 5 25Vdc at 1 8 A Max 1 4 A Typical SBX Modules each 4 75 to 5 25Vdc at 3 0 A Max 11 4 to 12 6Vdc at 1 0 A Max 12 6 to 11 4Vdc at 1 0 A Max 8 Environmental Specifications The Twin X board is rated for the following environmental conditions e Storage Temperature 40 to 70 degrees C e Operating Temperature 0 to 55 degrees C Relative Humidity 5 to 85 non condensing 9 PHYSICAL SPECIFICATIONS 8 9 Physical Specifications Due to adherence to the IEEE 959 physical specification and to module cooling requirements Twin X fitted with many IEEE 959 modules will consume two Amiga 2000 Zorro slots Should the Twin X be installed in the first Amiga 2000 Zorro slot however only one slot will be consumed Even if a Twin X with mo
11. Copyrights This User s Manual is copyrighted 1988 by ASDG Incorporated All rights are reserved worldwide 2 Restrictions The contents may not in whole or in part be copied photocopied reproduced or reduced to any electronic medium or machine readable form stored in any retreival system or translated into any human or machine language without prior consent in writing from ASDG Incorporated 3 Attributions Amiga is a trademark of Commodore Amiga Inc Twin X is a trademark of ASDG Incorporated iSBX and Multibus are trademarks of Intel Corporation 4 FCC Compliance WARNING This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions manual may cause interference to radio communications It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules which are designed to provide reasonable protection against such interference when operated in a commercial environment 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 whatever measures may be required to correct the interference If you suspect interference you can test the product by turning the Amiga off and on with this product installed and not installed If this product does cause interference try the following 1 Reorient the antenn
12. ERVICE AND REPAIR INFORMATION Service and repair assistance can be obtained from ASDG Incorporated by calling 608 273 6585 Always contact ASDG before returning a product for service Please have the following informa tion available when you call 1 Product name serial number and revision number 2 Your shipping and billing address 3 Your contact name and telephone number Ship products back in the same container they came in if at all possible If the original container is not available take the following precautions 1 Place boards in anti static bags 24 2 Allow room for padding material 3 Send the product a description of the problem and the information from your phone conver sation with the ASDG service staff to ASDG Incorporated 925 Stewart Street Madison WI 53713 Attn Service Department Professional ScanLab M Twin X Board Jumper Settings DIP Switch Or Switch Position Orientations Jumper Name and Jumper Shunts Required DS1 Switch Position No 8765 4321 Switch Orientation 0000 0011 1 closed or ON O open or OFF 3 4 Jumper shunts may be reguired on positions 5 6 or 7 8 for the module in position 2 1 2 for two modules present on Twin X 2 3 for one module present on Twin X Don t care Jumper shunts may be in or out Don t care Check jumper reguirements for module position 2 No jumper shunts required for Professional ScanLab Module in position 2 may require jumper shunt s on
13. S REGARDING THE USE OF OR THE RESULTS OF THE USE OF THE INFORMATION IN TERMS OF CORRECTNESS ACCURACY RELI ABILITY OR OTHERWISE ASDG INCORPORATED WILL NOT BE LIABLE FOR DIRECT INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM ANY DE FECT IN THE INFORMATION EVEN IF ASDG INCORPORATED HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES SOME STATES DO NOT ALLOW THE EXCLU SION OR LIMITATION OF IMPLIED WARRANTIES OR LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU 6 Introduction Congratulations on the purchase of your new Twin X expansion board This board will allow you to add one or two IEEE 959 iSBX expansion modules to your Commodore Amiga computer This provides the Amiga with the ability to communicate through the wide variety of interfaces that IEEE 959 modules exist for The iSBX standard was originally defined by Intel Corporation as part of their Multibus board 7 interface standard The module concept was used to allow the customer to define his own system by combining a general purpose base board with the modular I O function necessary for his application The standard was later submitted to and accepted by the Institute of Electrical and Electronic Engineers IEEE as an industry wide standard IEEE 959 There are a wide variety of Twin X compatible modules available from many manufacturers Examples include RS 232 ports counter timers relay outputs
14. Twin X General Purpose I O Board User s Manual ASDG Incorporated March 14 1989 CONTENTS Contents I NOTICES 1 Copyrights 2 Restrictions 3 Attributions 4 FCC Compliance 5 Disclaimer 6 Introduction II SPECIFICATIONS 7 Electrical Specifications Jal Power Requirements oi 9 56 04 5 A a ia 8 Environmental Specifications 9 Physical Specifications 10 Interface Features 10 1 Zorro Interface eee eee ence eb Ta 10215BX Interface ss AU a a A eh aie Ga a Petes Cetin 11 Interface Pinouts Lh Zorro be sn vis a A A a AA th EES 11 2 IEEE 959 iSBX Interface Connections aano CONTENTS HI USER INFORMATION 12 13 14 15 16 17 IV 18 19 20 21 22 23 24 Module Installation Installing Cables And Brackets Setting DIP Switches Jumper Settings 15 1 Jl ASDG Non ASDG Modules lt lt lt 15 2 12 Single Dual Modules 15 3 J3 J6 Extended Module Addressing a las RC PI IS X xes APR LED Functional Descriptions Installing Twin X In An Amiga 2000 PROGRAMMERS INFORMATION Config Space iSBX IEEE 959 Interface Overview Byte 8 Bit Mode Module Addressing Word 16 Bit Mode Module Addressing Twin X Module Status Using Extended Module Addressing Jumpers J3 to 36 Using Module DMA Features 11 11 12 12 12 14 14 15 15 16 17 17 18 19 19 20 21 21 23 CONTENTS V SERVICE AND REPAIR INFORMATION 23 Part I NOTICES 1
15. a or AC plug on the affected equipment 2 Change the relative positions of the Amiga and the affected equipment 3 Move the Amiga farther away from the affected equipment 5 DISCLAIMER 6 4 Plug either the Amiga or the affected equipment into a different outlet so that the Amiga and the affected equipment are on different circuits Use only shield grounded cables when connecting peripherals to the Amiga All peripherals must be labeled to comply with the FCC emissions requirements Class B certified devices will usually have lower emissions than Class A devices Operation with unlabeled peripherals is likely to result in interference Use this equipment only with three pronged type AC ground AC wall recepticals If necessary consult your dealer or an experienced Radio Frequency Interference technician for additional suggestions You may find the FCC booklet How to Identify and Resolve Radio TV In terference Problems helpful It is available from the U S Government Printing Office Washington D C 20402 stock no 004 000 00345 4 5 Disclaimer THIS MANUAL HAS BEEN CHECKED AND IS BELIEVED TO BE ACCURATE AND COR RECT AND IS SUBJECT TO CHAxNGE WITHOUT NOTICE THE INFORMATION IN THIS MANUAL IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESS OR IMPLIED THE ENTIRE RISK AS TO THE ACCURACY OF THE INFORMATION HEREIN IS ASSUMED BY THE USER ASDG INCORPORATED DOES NOT WARRANT GUARAN TEE OR MAKE ANY REPRESENTATION
16. dules attached should appear to fit within a single Amiga 2000 Zorro slot ASDG does NOT reccomend that the system be operated in this way This is because most modules require direct airflow to operate correctly Maximum 5 50 high by 13 85 long by 1 17 deep including rear panel bracket and iSBX modules See Figure 1 for a drawing of the Twin X physical specifications 10 Interface Features 10 1 Zorro Interface Separate auto config space for each iSBX module e Second config space may be turned off if only one iSBX module is to be used DIP switches and jumpers define module types to allow full auto configuring Each module occupies one standard Amiga I O space e All address data and control lines are buffered to prevent bus loading No wait states with most iSBX modules Wait states automatically added for iSBX modules that require slower accesses e Jumper block provided to connect iSBX module interrupts to Amiga interrupt lines allowing user defineable priorities 10 2 iSBX Interface iSBX bus baseboard with D16 16 I compliance level Supports 8 and 16 bit modules e Supports interlocked operations using MWAIT signal Supports two single wide or one double wide module suoreorroads vorsAYd X UIAT 90314 a UU o uS8 ET SUT mu UKR K 7 UOHISOH U UORISOg UT peog O I esoding 14819H IMPON XSI IMPON XJS PIU X UIM XEN LTT PPIM 11 INTERFACE PINOUTS 10 Allows the connection of iSBX DMA request lines to
17. e feedback to the user on the Twin X board activity The LED information allows programmers and system designers to verify the auto configuration of the boards in the system and see the relative access rate to each of the modules on the Twin X board The MODULE 1 CONFIG LED will go on AFTER the first module has been linked into the Amiga I O space as part of the auto configuration process This occurs a few seconds after power up or reset The LED should remain on until the next power down or reset 17 INSTALLING TWIN X IN AN AMIGA 2000 17 The MODULE 2 CONFIG LED will go on AFTER the second module has been linked into the Amiga I O space If the Twin X board is jumpered for single module operation J2 is in the lower or S position this LED should not come on Twin X boards jumpered for single module operation have only one config space and the Amiga will not map the second module into the I O space The MODULE 1 SELECT LED will go on during each access to module 1 and the MODULE 2 SELECT LED will go on during each access to module 2 The length of most accesses is less than 1 microsecond so it takes quite a few module accesses per second before the LEDs will appear to be glowing The relative brightness of the SELECT LEDs indicates the percentage of the time the modules are being accessed An LED that appears to be off indicates no or very low module activity and a brightly lit LED shows that the module is being accessed
18. f the address offsets from the base of the Twin X module address space The Ox numbers under the Chip Select Lines columns are hex offsets from the module base address The address of a register on a IEEE 959 module is found by adding Module Base Address Hex Offset Address Of Specific Register Each module s base address gets written into Twin X base address registers by the Amiga as the system is configured after powerup The specific location that a module I O space was mapped to is available to the programmer through the Amiga s ConfigDev List Each module on the Twin X board has a separate config space and will receive a separate base address 21 WORD 16 BIT MODE MODULE ADDRESSING 20 Address Lines Chip Select Lines MA2 MA1 MAO MCSO MCS1 0 0 0 0x01 0x41 0 0 1 0x03 0x43 0 1 0 0x05 0x45 0 1 1 0x07 0x47 1 0 0 0x09 0x49 1 0 1 0x0B 0x4B 1 1 0 0x0D 0x4D pi 1 1 Ox0F Ox4F Table 5 iSBX Module Offsets For 8 Bit Accesses 21 Word 16 Bit Mode Module Addressing In word data mode both module chip select lines go low true on each access Below is a table of the offsets from the module base for 16 bit accesses Note User s should try to avoid making word accesses to modules that are designed for byte 8 bit accesses only This is because many 8 bit modules use the two chip selects for different module features and do not protect against having two sets of chips driving the data lines at the same time which can
19. odule interrupt and DMA request lines to be connected to any of the Amiga 2000 interrupt lines Interrupts on standard Amiga expansion boards should connect to either INT2 or INT6 on 16 LED FUNCTIONAL DESCRIPTIONS 16 the Zorro bus The Twin X board allows any of the iSBX interrupts and or DMA requests to be connected directly to Zorro INT2 or INT6 with a jumper shunt Connections to the other Zorro bus interrupts is possible but requires a jumper connection using wire wrap wire All of the interrupt and DMA request outputs in this jumper block are driven by open collector drivers allowing more than one to be connected to the same interrupt signal line Connections other than those called out on the jumper settings sheet may cause incorrect Amiga operation One common symptom of wrong or unnecessary connections in the J7 space is the Amiga not getting far enough in its initialization sequence to ask for the workbench disk Be sure to check these jumper settings very carefully J7 OE OS SS Bd O B E UI B GG Oe CO OO lt 1 3 5 7 9 11 13 15 17 19 21 Figure 4 J7 Jumper Positions J7 Pin 1 2 3 4 Signal EINT7 EINT5 EINT4 EINT1 J7 Pin 5 6 7 8 9 10 Signal INT6 M1INTO INT2 INT6 MIINTI INT2 J7 Pin 11 12 T3 14 15 16 Signal INT6 MIDROT INT2 INT6 M2INTO INT2 J7 Pin 17 18 19 20 21 22 Signal INT6 M2INT1 INT2 INT6 M2DROT INT2 Table 4 J7 Jumper Definitions 16 LED Functional Descriptions The LEDs provid
20. rresponding to this module position out to prevent this user defined setting from being confused with the ASDG defined settings 15 Jumper Settings ASDG supplies a jumper settings list for each of the modules that it supplies software support for Please see Figure 2 for a diagram showing the locations and numbering of the Twin X jumper blocks and DIP switches CCICOCOI8ILIOISIVIEICIIIOlL6 S L9SFTETI OF zooo s rl zc El SIYIJIMS AY O XOU 000000000000000000000M HHT IEE UdIIOS IS prvog aY UO pue SI9QUINN SI9QUINN SIYIJIMS AY UO SI SULISQUINN SI9QUINN Uld Lf urd 9f pue sf utd pf pue ef SIYIUMS ATA TSA Y ISA a N a a gt a LJ NOTLISOd Y IYO yecrcace SULISQUINN puy suono 1adwnf pieog O I 3sodiang EI3U35 X UIM 7 3INSI A Hee san SISQUINN UI d ZT SISQUINN Uld Tf 15 JUMPER SETTINGS 14 15 1 J1 ASDG Non ASDG Modules The Jl settings are used along with the DIP switch settings to allow the software to identify the types of modules present The numbering and position definitions of J1 are as follows J 1 J 1 O O O B T 2 5 7 o O O O 2 4 6 8 Figure 1 J1 Jumper Positions Jumper Function When Function When Defined Connection Installed Not Installed For 1 to 2 Reserved Standard Module Module 1 3 to 4 ASDG Software Non ASDG Software Module 1 5 to 6 Reserved Standard Module Module 2 7 to 8 ASDG Software Non ASDG Software Module 2 Table 1 J1 Jumper Definitions 15 2 J2 Single Dual Module
21. s The position of jumper J2 determines whether one or two config spaces and therefore modules will be seen by the Amiga If two modules are present on the Twin X board the jumper should be in the upper position If only one module is present the jumper should be in the lower position and the module present must be in Module Position 1 o 1 o 2 o 3 Figure 2 J2 Jumper Positions 15 JUMPER SETTINGS 15 Jumper Function Connection Defined 1 to 2 Dual Modules 2 to 3 Single Module Table 2 J2 Jumper Definitions 15 3 J3 J6 Extended Module Addressing Jumpers J3 to J6 allow additional address lines to be connected to the iSBX interface for use with non standard modules Adding these address lines is not part of the standard iSBX or IEEE 959 specification These jumpers should be left off for use with most standard iSBX modules The ability to connect to these additional address lines was added to the Twin X board to allow custom I O modules to be designed that require more addressing space See the PROGRAMMERS INFORMATION section for more information on how these lines may be used o o 11 o o 1 1 J3 J4 J3 J4 J5 J6 J5 J6 oo 2 2 o o 2 2 Figure 3 J3 to J6 Jumper Positions Jumper Signal Module Installed Added Affected J3 MA3 Module 1 J4 MA4 Module 1 J5 MA3 Module 2 J6 MA4 Module 2 Note Leave These Jumpers Out For Standard Modules Table 3 J3 to J6 Jumper Definitions 15 4 J7 Interrupts Jumper J7 allows the m
22. ules provided by ASDG will include cables and brackets to allow all necessary connectors to be available at the rear of the Amiga Modules provided by other vendors will usually not include cables or brackets for use in the Amiga computer ASDG may be able to provide cabling and or brackets to fit your needs if you can not make or procure them yourself Install cables onto the iSBX modules being careful to match pin 1 of the cable connector to pin 1 of the module connector Most cable connectors will have a raised or inset arrow indicating pin 1 or they may have pin numbers set in the plastic of the connector Pin 1 of the module connector should be clearly marked in the silkscreen of the printed circuit board or pointed out in the manual for the module Install the brackets at the other end of each of the cables into Amiga rear panel 14 Setting DIP Switches There are two sets of DIP switches on the Twin X board The set labeled DS1 is used for Module 1 and the DS2 DIP switches are for Module 2 Driver software will read the DIP switches to determine what types of iSBX modules are present ASDG supplies a jumper settings list for each of the modules that it supplies software support for Set DS1 for the type of module located in Module Position 1 and DS2 for the module type located in Module Position 2 If you are not using ASDG supplied software you may use any DIP switch setting to identify the module to your software Leave the Jl jumpers co
Download Pdf Manuals
Related Search