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C.1 System I/O Ports
Table C.1: System I/O Ports
Addr. Range (Hex)
Device
000-01Fh
DMA Controller
20h-2Dh
Interrupt Controller
50h-52h
Timer/Counter
060h-06Fh
8042 (keyboard controller)
070h-07Fh
Real-time clock, non-maskable interrupt (NMI) mask
080h-09Fh
DMA page register
0A0h-0BFh
0A0-0BF
0C0h-0DFh
DMA controller
F0C0h-F0C7h
IDE Controller
F0E0h-F0E7h
IDE Controller
2F8h-2FFh
Communications Port (COM2)
3C0h-3DFh
Motherboard resources
3F8h-3FFh
Communications Port (COM1)
400h-4FFh
Motherboard resources
500h-53Fh
Motherboard resources
600h-67Fh
Motherboard resources
C.2 DMA Channel Assignments
Table C.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
MIO-2261 User Manual
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