APPENDIX
Appendix
A. I/O Port Address Map
Each peripheral device in the system is assigned a set of I/O port
addresses which also becomes the identity of the device. The following
table lists the I/O port addresses used.
Address
Device Description
000h - 01Fh
DMA Controller #1
020h - 021h
Interrupt Controller #1
040h - 043h
System Timer
070h - 077h
System/CMOS Real Time Clock
081h - 091h
DMA Controller #2
0A0h – 0A1h
Interrupt Controller #2
081h - 091h
DMA Controller #3
2F8h - 2FFh
Serial Port #2(COM2)
3C0h- 3DFh
Graphics adapter Controller
3F8h - 3FFh
Serial Port #1(COM1)
D000 - FFFh
PCI Root Ports
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