Asus P5K SE/EPU - Manual (Page 42)

2-20 Chapter 2: Hardware information
2.5.3 Interrupt assignments
IRQ assignments for this motherboard
A B C D E F G H
PCI slot 1 shared – – – – – – –
PCI slot 2 – shared – – – – – –
LAN (L1) – shared – – – – – –
SATA (Marvell) shared – – – – – – –
PCIE x16 – – shared – – – – –
PCIE x1_1 shared – – – – – – –
PCIE x1_2 – shared – – – – – –
PCIE x1_3 – – shared – – – – –
USB controller 1 – – – shared – – – –
USB controller 2 – – shared – – – – –
USB controller 3 shared – – – – – – –
USB controller 4 shared – – – – – – –
USB controller 5 – – – – – shared – –
USB controller 6 – – shared – – – – –
USB 2.0 controller 1 – – – – – – – shared
USB 2.0 controller 2 – – shared – – – – –
SATA controller 1 – – shared – – – – –
SATA controller 2 – – – – – – shared –
Azalia 883 – – – – – – shared –
IRQ Standard function
0 System timer
1 Keyboard controller
2 Re-direct to IRQ#9
3 IRQ holder for PCI steering*
4 Communications port (COM1)*
5 IRQ holder for PCI steering*
6 Floppy disk controller
7 IRQ holder for PCI steering*
8 System CMOS/Real Time Clock
9 IRQ holder for PCI steering*
10 IRQ holder for PCI steering*
11 IRQ holder for PCI steering*
12 IRQ holder for PCI steering*
13 Numeric data processor
14 Primary IDE channel
15 Secondary IDE channel
* These IRQs are usually available for PCI devices.