System interrupt specifications

Hardware IRQ

System function

 

 

IRQ0

System timer

 

 

IRQ1

Standard 101-/102-Key or Microsoft Natural P/S2 Keyboard with HP QLB

 

 

IRQ2

Mobile Intel® 4 Series Chipset PCI Express Root Port-2A41

 

 

IRQ3

Intel® ICH9 Family PCI Express Root Port1-2940

 

 

IRQ4

Intel® ICH9 Family PCI Express Root Port2-2942

 

 

IRQ5

Intel® ICH9 Family PCI Express Root Port3-2944

 

 

IRQ6

Intel® ICH9 Family PCI Express Root Port5-2948

 

 

IRQ7

Intel® ICH9 Family PCI Express Root Port6-294A

 

 

IRQ8

ATI Mobility Radeon HD 4330

 

 

IRQ9

Intel® WiFi Link 5100 ABG

 

 

IRQ12

Synaptics PS/2 Port TouchPad

 

 

IRQ13

Numeric data processor

 

 

IRQ16

Intel® ICH9 Family USB Universal Host Controller-2937

 

 

IRQ-17

High Definition Audio Controller

 

 

IRQ-18

Intel® ICH9 Family USB Universal Host Controller-2939

 

 

IRQ-19

Intel® ICH9 Family USB Universal Host Controller-293C

 

 

IRQ-20

Intel® ICH9 Family USB Universal Host Controller-293A

 

 

IRQ-21

Intel® ICH9M-E/M SATA AHCI Controller

 

 

IRQ-22

Intel® ICH9 Family USB Universal Host Controller-2935

*Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none.

NOTE: ExpressCards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15. Either the infrared or the serial port may assert IRQ3 or IRQ4.

100 Chapter 6 Specifications

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HP 4710S manual System interrupt specifications, Hardware IRQ System function