MIO-5250 User Manual 58
B.1 System I/O Ports
B.2 DMA Channel assignments
Table B.1: System I/O Ports
Addr. Range (Hex) Device
000-01F DMA Controller
20h-2Dh Interrupt Controller
50h-52h Timer/Counter
060-06F 8042 (keyboard controller)
070-07F Real-time clock, non-maskable interrupt (NMI)mask
080-09F DMA page register
0A0-0BF 0A0-0BF
0C0-0DF DMA controller
170h-177h IDE Controller
1F0h-1F7h IDE Controller
299h-29Ah EC HM Index port and Data port
29Ch-29Dh EC Index port and Data port
2E8-2EF Communications Port (COM4)
2F8-2FF Communications Port (COM2)
3E8-3EF Communications Port (COM3)
3F8-3FF Communications Port (COM1)
0400 - 04FF Motherboard resources
0500 - 053F Motherboard resources
Table B.2: DMA Channel assignments
Channel Function
0 Available
1 Available
2 Available
3 Available
4 Direct memory access controller
5 Available
6 Available
7 Available
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