B.3 Interrupt assignments
Table
Interrupt# | Interrupt source |
NMI | Parity error detected |
|
|
IRQ 0 | Interval timer |
|
|
IRQ 1 | Keyboard |
|
|
IRQ 2 | Interrupt from controller 2 (cascade) |
|
|
IRQ 8 | |
|
|
IRQ 9 | Reserve |
|
|
IRQ 10 | Available |
IRQ 11 | Reserved for watchdog timer |
|
|
IRQ 12 | PS/2 mouse |
|
|
IRQ 13 | INT from |
|
|
IRQ 14 | Preliminary IDE |
IRQ 15 | Secondary IDE for CompactFlash |
|
|
IRQ 3 | Serial communication port 2 |
|
|
IRQ 4 | Serial communication port 1 |
|
|
IRQ 5 | Audio* |
IRQ 6 | Diskette controller (FDC) |
|
|
IRQ 7 | Parallel port 1 (print port) |
|
|
*Audio default setting: IRQ5
USB and Ethernet IRQ is automatically set by the system
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