Interrupt Assignments; Irq Assignments For This Motherboard - Asus P5K SE EPU User Manual

2.5.3

Interrupt assignments

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.

IRQ assignments for this motherboard

PCI slot 1
PCI slot 2
LAN (L1)
SATA (Marvell)
PCIE x16
PCIE x1_1
PCIE x1_2
PCIE x1_3
USB controller 1
USB controller 2
USB controller 3
USB controller 4
USB controller 5
USB controller 6
USB 2.0 controller 1
USB 2.0 controller 2
SATA controller 1
SATA controller 2
Azalia 883
2-20
A B C
shared – –
– shared –
– shared –
shared – –
– – shared
shared – –
– shared –
– – shared
– – –
– – shared
shared – –
shared – –
– – –
– – shared
– – –
– – shared
– – shared
– – –
– – –
D E F
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
shared – –
– – –
– – –
– – –
– – shared
– – –
– – –
– – –
– – –
– – –
– – –
Chapter 2: Hardware information
G H
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– shared
– –
– –
shared –
shared –