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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

1 2 ... 54 55 56 57 58 59 60 61 62 63

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Ibase SE-92 Bedienungsanleitung Seite 59