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D.4 Interrupt assignments
Table D-4: Interrupt assignments
Interrupt#
IRQ 0
IRQ 1
IRQ 2
IRQ 3
IRQ 4
IRQ 5
IRQ 6
IRQ 7
IRQ 8
IRQ 9
IRQ 10
IRQ 11
IRQ 12
IRQ 13
IRQ 14
IRQ 15
* Ethernet interface IRQ select: 9, 11, 15
* PNP audio IRQ select: 9, 11, 15
* PNP USB IRQ select: 9, 11, 15
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PCM-9550F/FM/L User's Manual
Interrupt source
Interval timer
Keyboard
Interrupt from controller 2 (cascade)
COM2
COM1
COM4/LPT2
FDD
LPT1
RTC
Reserved (audio)
COM3
Reserved for watchdog timer
PS/2 mouse
INT from co-processor
Primary IDE
Secondary IDE for CFC
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