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Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1255, 1256, 1260, 1262, 1266, 1267, 1272, 1273, 1274, and 1275
United States June 28, 2004
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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
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