ASUS P5B Deluxe 2-19
2.5.3 Interrupt assignments

Standard interrupt assignments

IRQ Priority Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 — Re-direct to IRQ#9
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
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 —