Specifications

 

Table 6-8

 

System Interrupts

 

 

Hardware IRQ

System Function

 

 

IRQ0

System timer

 

 

IRQ1

Quick Launch buttons

 

 

IRQ2

Cascaded

 

 

IRQ3

USB2 Enhanced Host Controller—24CD

 

 

IRQ4

COM1

 

 

IRQ5*

Conexant AC—Link Audio

 

SMBus Controller—24C3

 

Data Fax Modem with SmartCP

 

 

IRQ6

Diskette drive

 

 

IRQ7*

Parallel port

 

 

IRQ8

System CMOS/real-time clock

 

 

IRQ9*

Microsoft ACPI-compliant system

 

 

IRQ10*

USB UHCI controller—24C2

 

GM/GME Graphic Controller

 

Realtek RTL8139 Family PCI fast Ethernet Controller

 

 

IRQ11

USB EHCI controller—24CD

 

USB UHCI controller—24C4

 

USB UHCI controller—24C7

 

Pro/Wireless 2200BG

 

TI OHCI 1394 host controller

 

TI PCI1410 CardBus controller

*Default configuration

✎PC Card may assert IRQ3, IRQ4, IRQ5, IRQ7, or IRQ20.

Maintenance and Service Guide

6–11