3 legacy i/o map, Legacy i/o map – ADLINK Express-CB User Manual

Page 32

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Express-CB User’s Manual

Page 32

7.3 Legacy I/O Map

Address Range (hex)

Description

000-01F

DMA controller 1, 8237A-5 equivalent

020-02D and 030-03F

Interrupt controller 1, 8259 equivalent

02E-02F

LPC SIO (W83627HG-AW) configuration index/data registers

040-05F

Timer, 8254-2 equivalent

060, 062, 064, 066, 068-06F

8742 equivalent (keyboard)

061, 063, 065, 067

NMI control and status

070-07F

Real Time Clock Controller( bit 7 -NMI mask)

080-091

DMA page register

93-9F

DMA page registers continued

0A0-0B1 and 0B4-0BF

Interrupt controller 2, 8259 equivalent

0B2h

APM Control I/O Address

0B3h

APM Status I/O Address

0C0-0DF

DMA controller 2, 8237A-5 equivalent

0F0

Co-processor error register

0F1

N/A

0F2-0F3

N/A

0F4

IDE ID port

0F5-0F7

N/A

0F8

IDE Index port

0F9-0FB

N/A

0FC

IDE Data port

0FD-0FF

N/A

170-177 and 376

Secondary IDE Channel

180-181

Default AIM4 SRAM control register (may be remapped)

1F0-1F7 and 3F6

Primary IDE Controller (AT Drive)

290

SIO_PME_BASE_ADDRESS

2E8-2EF

Serial port 4

2F8-2FF

Serial port 3

370-377

Secondary Floppy Disk Controller

378- 37F

Printer Port (LPT 1)

3B0-3BF

Mono/VGA mode video

3C0-3DF

VGA registers

3E8-3EF

Serial port 2

3F0-3F7

Primary Floppy disk controller

3F8-3FF

Serial port 1

400

SMBUS IO base

4D0

Master PIC Edge/Level Trigger register

4D1

Slave PIC Edge/Level Trigger register

500

GPIO base address for SB

800

alias for ACPI I/O base address.

830

SMI Control Registers.

860

alias for ICH TCO base address

CF9

Reset Control register (8 bit I/O)

CF8-CFC

The PCI config space index/data ports

0A00-0AFF

Reserved for SIO functions base address (eg: Hardware Monitor, GPIO, etc)

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