beautypg.com

Acrosser AR-B1690 User Manual

Page 34

background image

AR-B1690 User’s Guide

34


APPENDIX A. I/O & MEMORY MAP


Memory Map:

MEMORY MAP

ASSIGNMENT

0000000-009FFF
F

System memory used by
DOS and application

00A0000-00BFFF
F

Display buffer memory for
VGA/ EGA / CGA /
MONOCHROME adapter

00C0000-00DFF
FF

Reserved for I/O device BIOS
ROM or RAM buffer.

00E0000-00EFFF
F

Reserved for PCI device
ROM

00F0000-00FFFF
F

System BIOS ROM

0100000-FFFFFF
F

System extension memory




I/O 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

1F0-1F8

Hard Disk controller

250-258 Super

I/O

2B0-2DF

Graphics adapter controller

2E8-2EF Serial

port-4

2F8-2FF Serial

port-2

360-36F

Net work ports

378-37F Parallel

port-1

3B0-3BF

Monochrome & Printer adapter

3C0-3CF EGA

adapter

3D0-3DF CGA

adapter

3E8-3EF Serial

port-3

3F0-3F7

Floppy disk controller

3F8-3FF Serial

port-1

Note:
If the content in Setting is inconsistent with CD-ROM, please refer to the setting as priority.