HP dv2500 User Manual

System interrupt specifications

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

IRQ11

Intel USB EHCI controller—24CD

Intel USB UHCI controller—24C4

Intel USB UHCI controller—24C7

Intel Pro/Wireless 2200BG

TI OHCI 1394 host controller

TI PCI1410 CardBus controller

IRQ12

Synaptics PS/2 TouchPad

IRQ13

Numeric data processor

IRQ14

Primary IDE channel

IRQ15

Secondary IDE channel

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

NOTE:

PC Cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15. Either the infrared or the serial port

may assert IRQ3 or IRQ4.

System interrupt specifications 101