The following table shows the default system resource assigned for each
IRQ:
| IRQ Value | Assignment |
|---|---|
| 0 | Timer |
| 1 | Keyboard |
| 2 | Cascade |
| 3 | Infrared |
| 4 | Serial Port |
| 5 | Not used |
| 6 | Diskette |
| 7 | Parallel Port |
| 8 | Real-time clock |
| 9 | PCI Audio |
| 9 | PCI Video |
| 9 | PCI Modem |
| 9 | PCI CardBus |
| 9 | PCI USB |
| 10 | Not used |
| 11 | Not used |
| 12 | PS/2 TrackPoint |
| 13 | Math co-processor |
| 14 | Primary IDE |
| 15 | Secondary IDE |