|
Hardware
IRQ
|
System
Function
|
|
IRQ0
|
System timer
|
|
IRQ1
|
Keyboard controller
|
|
IRQ2
|
Cascaded
|
|
IRQ3
|
COM2
|
|
IRQ4
|
COM1
|
|
IRQ5
|
Audio (default)
|
|
IRQ6
|
Diskette drive
|
|
IRQ7
|
Parallel port
|
|
IRQ8
|
Real time clock (RTC)
|
|
IRQ9
|
Infrared
|
|
IRQ10
|
System use
|
|
IRQ11
|
System use
|
|
IRQ12
|
Internal point stick or external mouse
|
|
IRQ13
|
Coprocessor (not available to any peripheral)
|
|
IRQ14
|
IDE interface (hard drive and optical drive)
|
|
IRQ15
|
System use
|
note:IRQ5 is the default audio 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.
