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PCI-6871 User’s Manual 142
Appendix D
System Assignments
D.1 System I/O Ports
Table D.1: System I/O ports
Addr. range (Hex) Device
000-01F DMA controller
020-021 Interrupt controller 1, master
040-05F 8254 timer
060-06F 8042 (keyboard controller)
070-07F Real-time clock, non-maskable interrupt (NMI)
mask
080-09F DMA page register
0A0-0BF Interrupt controller 2
0C0-0DF DMA controller
0F0 Clear math co-processor
0F1 Reset math co-processor
0F8-0FF Math co-processor
1F0-1F8 Fixed disk
200-207 Reserved (Game I/O)
278-27F Parallel printer port 2 (LPT 3)
2E8-2EF Series port 4
2F8-2FF Serial port 2
300-31F Prototype card
360-36F Reserved
378-37F Parallel printer port 1 (LPT 2)
380-38F SDLC, bisynchronous 2
3A0-3AF Bisynchronous 1
3B0-3BF Monochrome display and printer adapter (LPT1)
3C0-3CF Reserved
3D0-3DF Color/graphics monitor adapter
3E8-3EF Series port 3
3F0-3F7 Diskette controller
3F8-3FF Serial port 1
* PNP audio I/O map range from 220 ~ 250H (16 bytes)
MPU-401 select from 300 ~ 330H (2 bytes)