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EPC-7 Hardware Reference

The assignment of DMA channels is shown in the following table.

0 SCSI or unassigned (see battery-backed register)

1 unassigned

2 floppy disk controller

3 unassigned

5 SCSI or unassigned (see battery-backed register)

6 unassigned

7 unavailable

Table 19. DMA Channels.

Page A2

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1
EPC - 7 2
Hardware Reference 2
Hardware Warranty 4
Contents 6
1. Product Description 10
Specifications 11
Product Description 12
2. Before Installation 14
VXIbus Slots 16
Before Installation 18
3. Installation 21
Monitor 22
Keyboard 22
Installation 23
Serial Port 23
Parallel Printer Port 23
SCSI Port 23
External Clock Input 24
External Clock Output 24
External Trigger 24
4. Configuring the 25
BIOS Setup 25
BIOS Setup Screen 26
Configuring the BIOS Setup 27
EXM Configuration 28
Fixed Disk Menu 30
User-Definable Drive Types 32
Disk Formatting 33
5. Theory of Operation 35
Memory Map 36
Processor and Memory 37
ROM and ROM Shadowing 37
SCSI Controller 38
Floppy Disk Controller 38
IDE Disk Interface 39
Battery 39
Watchdog Timer 40
EXM Expansion Interface 41
VXIbus Interface 41
Reset Behavior 42
Theory of Operation 43
Printed Circuit Board 44
6. Connectors 45
Connectors 47
VXI Signal Usage 48
Floppy Connector 52
7. VXIbus Interface 53
Direct VMEbus Accesses 54
Byte Ordering 55
Read-Modify-Write Operations 59
Registers Specific to EPC-7 60
Register State after Reset 76
VXIbus Mapped Registers 77
Supported Address Modifiers 78
VXIbus Interrupt Handler 81
Soft Reset and VME Sysreset 84
8. Upgrades 87
Hard Disk 89
9. Troubleshooting & 91
Error Messages 91
Page 83 93
Common Error Messages 94
EXM CONFIGURATION ERROR 95
MISSING OPERATING SYSTEM 97
SCSI related problems 99
EPC-7 Hardware Reference 100
10. Support and Service 101
Repair Services 102
Warranty Repairs 102
Non-Warranty Services 102
Support and Service 103
Arranging Service 103
Other Countries 104
Appendix A: Interrupts & 105
DMA Channels 105
Appendix B: I/O Map 107
I/O Map 109
Appendix C: Using the 113
EPC7-AM 113
PC Add-in Card 115
Using the EPC-7 AM 117

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