2.5.3Interrupt assignments
Standard interrupt assignments
IRQ | Priority | Standard Function |
0 | 1 | System Timer |
1 | 2 | Keyboard Controller |
2 | — | |
3 | 11 | IRQ holder for PCI steering* |
4 | 12 | Communications Port (COM1)* |
5 | 13 | IRQ holder for PCI steering* |
6 | 14 | Floppy Disk Controller |
7 | 15 | Printer Port (LPT1)* |
8 | 3 | System CMOS/Real Time Clock |
9 | 4 | IRQ holder for PCI steering* |
10 | 5 | IRQ holder for PCI steering* |
11 | 6 | IRQ holder for PCI steering* |
12 | 7 | PS/2 Compatible Mouse Port* |
13 | 8 | Numeric Data Processor |
14 | 9 | Primary IDE Channel |
15 | 10 | Secondary IDE Channel |
* These IRQs are usually available for PCI devices.
IRQ assignments for this motherboard
| A | B | C | D | E | F | G | H |
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PCI slot 1 | — | — | — | — | — | used | — | — |
PCI slot 2 | — | — | — | — | — | — | shared | — |
PCI slot 3 | — | — | — | — | — | — | — | shared |
LAN(8001) | — | — | — | shared | — | — | — | — |
SATA(363) | shared | — | — | — | — | — | — | |
LAN(8056) | — | shared | — — — — — — | |||||
PCIE x16 1 | shared | — | — — — — — — | |||||
PCIE x16 2 | shared | — | — | — — — — — | ||||
PCIE x1 | — | — | shared | — | — | — | — | — |
USB controller 1 | — | — | — | — | — | — | — | shared |
USB controller 2 | — | — | — | shared | — | — | — | — |
USB controller 3 | — | — | shared | — | — | — | — | — |
USB controller 4 | shared | — | — — — — — — | |||||
USB controller 5 | — | shared | — — — — — — | |||||
USB 2.0 controller 1 | — | — | — | — | — — — | shared | ||
USB 2.0 controller 2 | — | — | shared | — | — | — | — | — |
SATA controller 1 | — | — | shared | — | — | — | — | — |
SATA controller 2 | — | shared | — — — — — | — | ||||
Azalia | — | — | — | — | — | — | shared | — |
ASUS P5B Deluxe |
