Filter
Top Products
PCM-9387 User’s Manual 88
Appendix C System Assignments
C.1 System I/O Ports
Table C.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 Reserved (Parallel port 2,LTP3)
2E8-2EF Reserved (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 Reserved (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)