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Maintenance & Service Guide
Presario 1200 Series
Models: 1255, 1257, 1260, 1262, 1266, 1267, 1272, 1273, 1274, and 1275

 | Home Page | Notice | Preface | Product Description | Troubleshooting  
Illustrated Parts Catalog
Removal & Replacement Procedures | Specifications
Pin Assignments
| Battery Pack Operations


Specifications

System Interrupts

System Interrupts

Hardware IRQ

System Function

IRQ00

Timer Interrupt

IRQ01

Standard 101/102-Key or Microsoft Natural Keyboard

IRQ02

Programmable interrupt controller

IRQ03

Compaq Presario 56K-DF

IRQ04

Communications Port (COM1)

IRQ05

ES1869 Plug and Play AudioDrive

IRQ06

Standard Floppy Disk Controller

IRQ07

Printer Port (LPT1)

IRQ08

System CMOS/real time clock

IRQ09

(free)

IRQ10

OPTi 82C861 PCI to USB Open Host Controller

IRQ11

IRQ Holder for PCI Steering

IRQ11

NeoMagic MagicGraph 128XD

IRQ12

Synaptics PS/2 TouchPad

IRQ13

Numeric data processor

IRQ14

Primary IDE controller (dual fifo)

IRQ14

Opti Viper Max Dual PCI IDE Controller

IRQ15

Secondary IDE controller (dual fifo)

IRQ15

Opti Viper Max Dual PCI IDE Controller

Return to the index list of Specifications.

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Revised: 25 February 1999