1.8.3Interrupt assignments
Standard interrupt assignments
IRQ | Priority | Standard Function |
|
|
|
0 | 1 | System Timer |
1 | 2 | Keyboard Controller |
2 | — | |
3 | 10 | Communications Port (COM1) |
4 | 11 | IRQ holder for PCI steering* |
5 | 12 | Standard Floppy Disk Controller |
6 | 13 | Printer Port (LPT1) |
7 | 3 | System CMOS/Real Time Clock |
8 | 4 | IRQ holder for PCI steering* |
9 | 5 | IRQ holder for PCI steering* |
10 | 6 | IRQ holder for PCI steering* |
11 | 7 | PS/2 Compatible Mouse Port |
12 | 8 | Numeric Data Processor |
13 | 9 | Primary IDE Channel |
* These IRQs are usually available for PCI devices.
IRQ assignments for this motherboard
| A | B | C | D | E | F | G | H |
PCI1 | — | — | — | shared | — | — | — | — |
PCI2 | shared | — | — | — | — | — | — | — |
PCIEX16_1 | shared | — | — | — | — | — | — | — |
PCIEX1_1 | shared | — | — | — | — | — | — | |
Onboard USB controller 1 | — | — | — | — | — | — | — | shared |
Onboard USB controller 2 | — | — | — | shared | — | — | — | — |
Onboard USB controller 3 | — | — | shared | — | — | — | — | — |
Onboard USB controller 4 | shared | — | — | — | — | — | — | — |
Onboard USB 2.0 controller | — | — | — | — | — | — | — | shared |
Onboard HD audio | shared | — | — | — | — | — | — | — |
Onboard LAN | — | Used | — | — | — | — | — | — |
ASUS |