1.6.3Standard Interrupt Assignments
| IRQ |
|
|
| Priority |
|
|
| Standard Function |
|
0 |
|
| 1 |
|
|
| System Timer | |||
1 |
|
| 2 |
|
|
| Keyboard Controller | |||
2 |
|
| - |
|
|
| Redirect to IRQ#9 | |||
3 |
|
| 11 |
|
|
| IRQ holder for PCI streering* | |||
4 |
|
| 12 |
|
|
| Communications Port (COM1)* | |||
5 |
|
| 13 |
|
|
| IRQ holder for PCI streering* | |||
6 |
|
| 14 |
|
|
| Floppy Disk Controller | |||
7 |
|
| 15 |
|
|
| Printer Port (LPT)* | |||
8 |
|
| 3 |
|
|
| System CMOS/Rear Time | |||
9 |
|
| 4 |
|
|
| IRQ holder for PCI streeing* | |||
10 |
|
| 5 |
|
|
| IRQ holder for PCI streeing* | |||
11 |
|
| 6 |
|
|
| IRQ holder for PCI streeing* | |||
12 |
|
| 7 |
|
|
| PS/2 Compatible Mouse Port* | |||
13 |
|
| 8 |
|
|
| Numeric Data Processor | |||
14 |
|
| 9 |
|
|
| Primary IDE Channel | |||
15 |
|
| 10 |
|
|
| Secondary IDE Channel |
*There IRQs are usually available for ISA or PCI device.
1.6.4PCI Slots
28