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Appendix a. address mapping, Io address map – Acrosser AR-B1790 User Manual

Page 35

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AR-B1790 User’s Guide

35

APPENDIX A. ADDRESS MAPPING

IO Address Map

I/O MAP

ASSIGNMENT

000-01F

DMA controller (Master)

020-021

Interrupt controller (Master)

022-023

Chipset controller registers I/O ports.

040-05F

Timer control registers.

060-06F

Keyboard interface controller

070-07F

RTC ports & CMOS I/O ports

080-09F DMA

register

0A0-0BF

Interrupt controller (Slave)

0C0-0DF

DMA controller (Slave)

0F0-0FF Math

coprocessor

1F0-1F7

Primary IDE Channel

170-177

Secondary IDE Channel

2E8-2EF Serial

port-4

2F8-2FF Serial

port-2

378-37F Parallel

port

3B0-3DF Graphics

Controller

3E8-3EF Serial

port-3

3F0-3F7

Floppy disk controller

3F8-3FF Serial

port-1