Specifications

EPC-8A Hardware Reference
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Tables
Table 1-1. EPC-8A Environmental Specifications.............................................................................................. 3
Table 1-2. Additional EPC-8A Specifications..................................................................................................... 3
Table 2-1. VME Slots Available.......................................................................................................................... 7
Table 4-1. Memory at addresses between 0 and 1MB (0FFFFFh)...................................................................... 31
Table 4-2. Extended memory address space for a 4MB EPC-8A........................................................................31
Table 4-3. Reset Conditions................................................................................................................................. 36
Table 5-1. Supported Address Modifiers............................................................................................................. 45
Table 5-2. VME access type................................................................................................................................ 49
Table A-1. First (8-bit) DMA controller: RadiSys R400EX chip emulating 8237 of PCAT .............................. 51
Table A-2. First Interrupt controller: RadiSys R400EX emulating 8259 of PC/AT............................................ 51
Table A-3. R400EX controller.............................................................................................................................. 51
Table A-4. Counter-Timer functions: RadiSys R400EX emulating 8254 of PCAT............................................ 52
Table A-5. Keyboard Port: RadiSys R400EX emulating 8742 of PC/AT............................................................ 52
Table A-6. Time-of-Day Clock: RadiSys R400EX emulating MC146818 of PCAT.......................................... 52
Table A-7. DMA Page Registers: RadiSys R400EX emulating 74LS612 of PC/AT .......................................... 52
Table A-8. Port A.................................................................................................................................................. 53
Table A-9. EXM Configuration............................................................................................................................ 53
Table A-10. Second Interrupt Controller: RadiSys R400EX emulating 8259 of PCAT ....................................... 53
Table A-11. Second (16-bit) DMA Controller: RadiSys R400EX emulating 8237 of PCAT............................... 53
Table A-12. Coprocessor Interface: For the EPC-8A DX, DX replaces the 80287 of PCAT............................... 54
Table A-13. EXM Configuration............................................................................................................................ 54
Table A-14. Ethernet............................................................................................................................................... 54
Table A-15. Serial I/O (Com2) Port: National Semiconductor PC87336 emulating 8251 of PCAT.................... 54
Table A-16. Parallel I/O (LPT1) Port: National Semiconductor PC87336 emulating 8255 of PCAT.................. 54
Table A-17. VGA ................................................................................................................................................... 54
Table A-18. Serial I/O (Com1) Port: National Semiconductor PC87336 emulating 8552 of PC/AT.................... 55
Table A-19. EPC Registers..................................................................................................................................... 55
Table A-20. VME Registers ................................................................................................................................... 55
Table A-21. VXI, VME/Misc., and On-board EXM-2A Registers........................................................................56
Table B-1. Interrupts............................................................................................................................................. 57
Table B-2. DMA Channels................................................................................................................................... 57
Table C-1. DB-9 Pin-Out...................................................................................................................................... 59
Table C-2. COM2 RS-422/RS485 Port Pin-out ................................................................................................... 59
Table C-3. DB-25 Pin-out .................................................................................................................................... 60
Table C-4. Keyboard Pin-out................................................................................................................................ 60
Table C-5. DB-15 Pin-out .................................................................................................................................... 61
Table C-6. RJ45 Phone Jack Pin-out.................................................................................................................... 61
Table I-1. Notational Conventions...................................................................................................................... 94
Table J-1. Troubleshooting Error Messages........................................................................................................ 99
Table J-2. BIOS Troubleshooting Beep Codes ................................................................................................... 100