ISA DMAMap

Software Functional Overview

330

- 333

MIDI

376

IDE Secondary Control Block

378 – 37F

Parallel Port

388 - 38B

FM Synthesizer

 

 

 

398

- 399

Super I/O Chip

3B0 - 3DF

Video Controller

3E0

- 3E1

PCMCIA Controller

 

 

 

3E8

- 3EF

Fax/Modem

3F0 - 3F5, 3F7

Floppy Disk Controller

3F6

IDE Primary Control Block

 

 

 

3F8

- 3FF

Serial Port 1

778

– 77F

ECP port

 

 

A79

ISA PnP Address

CF8 – CFF

PCI BUS configuration Register

 

 

 

ISA DMAMap

DMA Channel

Device

DMA 0

Unused

 

 

DMA 1

ECP

DMA 2

Floppy Disk

DMA 3

Audio

 

 

DMA 4

[Cascade]

DMA 5

Unused

DMA 6

Unused

 

 

DMA 7

Unused

Memory Map

 

Address Range

Length

Description

 

00000 - 9F7FFh

638 KB

Base Memory

 

9F800 - 9FFFFh

2 KB

Extended BIOS Data Area

 

A0000 – BFFFFh

128 KB

Video Memory

 

C0000 – CBFFFh

48 KB

Video ROM

 

CC000 – CFFFFh

16 KB

Unused

 

D0000 – DFFFFh

64 KB

Unused

 

E0000 – E0FFFh

4 KB

DMI information

 

E1000 – FFFFFh

124 KB

System ROM BIOS

IRQ Map

 

 

 

 

 

 

 

IRQ#

Description

 

 

IRQ 0

System Timer

 

 

IRQ 1

Keyboard

 

 

IRQ 2

[Cascade]

 

 

IRQ 3

Serial Infrared Port

FIC A360 Service Manual

3-13

Page 70
Image 70
FIC A360 Software Functional Overview, ISA DMAMap, DMA Channel, Device, Memory Map, Address Range, Length, Description