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Interrupts, Connector pinouts, Main power connector (j48) – Gateway E-9722R User Manual

Page 88: Interrupts connector pinouts

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APPENDIX A: Server Specifications

82

Interrupts

The following table reflects a typical configuration, but you can change these interrupts. Use
this information to determine how to program each interrupt.

Connector pinouts

Main power connector (J48)

0E0000h to 0EFFFFh

2 MB

Extended system BIOS

FC000000h to FFFFFFFFh

64 MB

PCI memory space

Important

If you disable an IDE controller to free the interrupt for that controller, you must

physically unplug the IDE cable from the system board. Simply disabling the drive by
configuring the BIOS option does not make the interrupt available.

ISA Interrupt

Description

IRQ0

8254 timer

IRQ1

Keyboard controller

IRQ2

Cascade for IRQ9

IRQ3

Free

IRQ4

Serial port

IRQ5

VGA

IRQ6

Diskette controller

IRQ7

Free

IRQ8

Real-time clock

IRQ9

Generic, Option for SCI

IRQ10

USB controller

IRQ11

LAN

IRQ12

Mouse controller

IRQ13

Numeric data processor

IRQ14

Primary IDE controller

IRQ15

Free

Pin

Signal Name

1

+3.3 V

2

+3.3 V

3

Ground

Address Range (hex)

Amount

Function