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Acer 3000 User Manual

Page 38

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Chapter 1

000-00F

DMA controller-1

020-021

Interrupt controller-1

040-043

Timer 1

060, 064

Keyboard controller NS87591 chip select

070-073

Real-time clock and CMOS

0A0-0A1

Interrupt controller-2

0C0-0DF

DMA controller-2

066, 062

ACPI EC interface (NS87591)

170-177

Secondary IDE channel

1F0-1F7

Primary IDE channel

378, 37F

Parallel port

3B0-3BB
3C0-3DF

VGA I/O adress

CF8-CFF

PCI configuration register

000-00F

DMA controller-1

IRQ Assignment Map

Interrupt Channel

Function(Hardware)

IRQ00

System timer

IRQ01

Keyboard

IRQ02

Programmable interrupt controller

IRQ03

IrDA Fast Infrared Port

IRQ04

Communication port (COM1)

IRQ05

Winbond SD controller

IRQ06

Standard floppy disk controller

IRQ07

ECP printer port (LPT1)

IRQ08

CMOS/RTC

IRQ09

SCI IRQ used by ACPI bus

IRQ12

PS/2 mouse

IRQ13

Numeric data processor

IRQ14

Primary IDE channel

IRQ15

Secondary IDE channel

DMA Channel Assignment

Item

Specification

Channel 1

IrDA Fast Infrared Port

Channel 3

ECP printer port

Channel 4

DMA controller

I/O Address Map

I/O Address

Function