Specifications

 

Table 6-6

 

System Interrupts

 

 

Hardware IRQ

System Function

 

 

IRQ0

System timer

 

 

IRQ1

Standard 101-/102-Key or Microsoft Natural Keyboard

 

 

IRQ2

Cascaded

 

 

IRQ3

USB2 Enhanced Host Controller—24CD

 

 

IRQ4

COM1

 

 

IRQ5*

Conexant AC—Link Audio

 

Data Fax Modem with SmartCP

 

 

IRQ6

Diskette drive

 

 

IRQ7*

Parallel port

 

 

IRQ8

System CMOS/real-time clock

 

 

IRQ9*

Microsoft ACPI-compliant system

 

 

IRQ10*

Realtek RTL8139 Family PCI fast Ethernet Controller

 

 

6–10

Maintenance and Service Guide

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HP invent, 405501-001 manual System Interrupts, Hardware IRQ System Function