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APPENDIX

IB908F User’s 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

Device Description

000h - 01Fh

DMA Controller #1

020h - 021h

Interrupt Controller #1

040h - 043h

Timer

060h - 060h

Keyboard Controller

070h - 077h

Real Time Clock, NMI

081h - 091h

DMA Page Register

0A0h – 0A1h

Interrupt Controller #2

081h - 091h

DMA Controller #2

040h – 05Fh

SMBus Controler

2F8h - 2FFh

Serial Port #2(COM2)

3C0h- 3DFh

Graphics adapter Controller

D000 - FFFh

PCI-e Root Ports

3F8h - 3FFh

Serial Port #1(COM1)

1 2 ... 67 68 69 70 71 72 73 74 75 76

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Ibase IB908 Manuale Utente Pagina 72