Specifications

 

Table 6-8

 

System Interrupts

 

 

Hardware IRQ

System Function

 

 

IRQ0

System timer

 

 

IRQ1

Standard 101-/102-Key or Microsoft Natural Keyboard

 

 

IRQ2

Cascaded

 

 

IRQ3

Intel 82801DB/DBM USB2 Enhanced Host

 

Controller—24CD

 

 

IRQ4

COM1

 

 

IRQ5*

Conexant AC—Link Audio

 

Intel 82801DB/DBM 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*

Intel USB UHCI controller—24C2

 

Intel 82852/82855 GM/GME Graphic Controller

 

Realtek RTL8139 Family PCI fast Ethernet Controller

 

 

Maintenance and Service Guide

6–11