Standard Interrupt Assignments; Irq Assignments For This Motherboard - Asus P5B Premium Series Hardware User Manual

2.5.3 Interrupt assignments

Standard interrupt assignments

IRQ
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
* These IRQs are usually available for PCI devices.

IRQ assignments for this motherboard

PCI slot 1
PCI slot 2
PCI slot 3
LAN(8001)
SATA(363)
LAN(8056)
PCIE x16 1
PCIE x16 2
PCIE x1
USB controller 1
USB controller 2
USB controller 3
USB controller 4
USB controller 5
USB 2.0 controller 1
USB 2.0 controller 2
SATA controller 1
SATA controller 2
2-20
Priority
1
2
—
11
12
13
14
15
3
4
5
6
7
8
9
10
A
—
—
—
—
shared
— shared
shared
shared
—
—
—
—
shared
— shared
—
—
—
— shared
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
Primary IDE Channel
Secondary IDE Channel
B C D
— — —
— — —
— — —
— — shared —
— — —
— —
— — —
— — —
— shared —
— — —
— — shared —
— shared —
— — —
— —
— — —
— shared —
— shared —
— —
Chapter 2: Hardware information
E F G
— used —
— — shared
— — — shared
— —
— — —
— — —
— — —
— — —
— — —
— — — shared
— —
— — —
— — —
— — —
— — — shared
— — —
— — —
— — —
H
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—