Appendix; I/O Port Address Map - IBASE Technology IB909F User Manual

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
000h - 01Fh
020h - 021h
040h - 043h
070h - 077h
081h - 091h
0A0h – 0A1h
081h - 091h
2F8h - 2FFh
3C0h- 3DFh
3F8h - 3FFh
D000 - FFFh
Device Description
DMA Controller #1
Interrupt Controller #1
System Timer
System/CMOS Real Time Clock
DMA Controller #2
Interrupt Controller #2
DMA Controller #3
Serial Port #2(COM2)
Graphics adapter Controller
Serial Port #1(COM1)
PCI Root Ports
IB909 User's Manual
APPENDIX
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