Chapter 3

 

Hardware

 

 

 

 

 

Address (hex)

Subsystem

 

 

0040-0043

Programmable Interrupt Timer (Clock/Timer)

 

 

 

 

 

 

0060-0064

Keyboard Controller

 

 

0070-0071

RTC/ NMI enable

 

 

 

 

 

 

0080-008F

DMA Page

 

 

 

 

 

 

0094

Motherboard VGA enable

 

 

 

 

 

 

00A0-00A1

Slave Interrupt Controller (#2)

 

 

 

 

 

 

00C0-00DF

Secondary DMA Controller (#2)

 

 

 

 

 

 

0102

VGA setup register

 

 

 

 

 

 

01F0-01F7

Primary IDE (configurable)

 

 

 

 

 

 

0170-0177

Secondary IDE (configurable)

 

 

 

 

 

 

0201

Watchdog trigger (configurable, disabled by default)

 

 

02E8-02EF

COM4 (configurable)

 

 

 

 

 

 

02F8-02FF

COM2 (configurable)

 

 

 

 

 

 

0376

Secondary IDE (see 170)

 

 

0378-037B

LPT 1 (configurable, disabled by default)

 

 

 

 

 

 

0378-037F

LPT 1 (only in EPP modes)

 

 

 

 

 

 

03B4-03B5

VGA registers (monochrome mode only)

 

 

 

 

 

 

03BA

VGA registers (monochrome mode only)

 

 

 

 

 

 

03C0-03CF

VGA registers

 

 

 

 

 

 

03D4-03D5

VGA registers (color mode only)

 

 

 

 

 

 

03DA

VGA registers (color mode only)

 

 

 

 

 

 

03E8-03EF

COM3 (configurable)

 

 

 

 

 

 

03F0-03F1

Super I/O Configuration

 

 

 

 

 

 

03F0-03F5

Floppy Disk Controller (configurable)

 

 

 

 

 

 

03F6

Primary IDE (see 1F0)

 

 

 

 

 

 

03F7

Floppy Disk Controller (see 3F0)

 

 

 

 

 

 

03F8-03FF

COM1 (configurable)

 

 

 

 

 

 

0778-077A

LPT 1 (only in ECP modes)

 

 

 

 

 

 

0CF8

PCI Configuration Address

 

 

 

 

 

 

0CFC-0CFF

PCI Configuration Data

 

 

 

 

 

 

46E8

VGA add-in mode enable register

 

 

D000-D007

General Purpose I/O for customer use

 

 

 

 

 

 

D400-D407

Board control

 

 

 

 

 

 

E400-E43F

On-Board Ethernet

 

 

E800-E80F

IDE Bus Master registers (PCI mode)

 

 

 

 

 

 

EC00-EC0F

Secondary IDE Control (PCI mode)

 

 

 

 

 

 

F000-F00F

Secondary IDE Command (PCI mode)

 

 

F400-F40F

Primary IDE Control (PCI mode)

 

 

 

 

 

 

F800-F80F

Primary IDE Command (PCI mode)

 

 

 

 

 

Note: Configurable indicates the device’s base address can be configured and/or the device can be disabled, either through BIOS Setup or hardware jumpers.

CoreModule 420

Reference Manual

21

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Image 27
Ampro Corporation 5001692A manual 0CFC-0CFF, EC00-EC0F