Interrupt Assignments - Asus P5Q3 - Motherboard - ATX User Manual

2.5.3

Interrupt assignments

IRQ Priority
0 1
1 2
2 –
3 11
4 12
5 13
6 14
7 15
8 3
9 4
10 5
11 6
12 7
13 8
14 9
15 10
* These IRQs are usually available for PCI devices.
IRQ assignments for this motherboard
PCI slot 1
PCI slot 2
LAN (8111C)
SATA (363+322)
PCIe x16_1
PCIe x16_2
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
ASUS P5Q3
Standard function
System timer
Keyboard controller
Re-direct to IRQ#9
IRQ holder for PCI steering*
Communications port (COM1)*
IRQ holder for PCI steering*
Floppy disk controller
Printer port (LPT1)*
System CMOS/Real Time Clock
IRQ holder for PCI steering*
IRQ holder for PCI steering*
IRQ holder for PCI steering*
PS/2 compatible mouse port*
Numeric data processor
SATA Primary IDE (legacy mode)
SATA Secondary IDE (legacy mode)
A B C
shared – –
– shared –
– shared –
shared – –
shared – –
shared – –
shared – –
– shared –
– – shared
– – –
– – –
– – shared
shared – –
shared – –
– – –
– – –
– – shared
– – shared
– – –
D E F
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
shared – –
– – –
– – –
– – –
– – shared
– – –
– – –
– – –
shared – –
G H
– –
– –
– –
– –
– –
– –
– –
– –
– –
– shared
– –
– –
– –
– –
– –
– shared
– –
– –
– –
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