Standard Interrupt Assignments; Irq Assignments For This Motherboard - Asus A8S-X User Manual

1.8.1

Standard interrupt assignments

IRQ
0
1
2
3*
4*
5*
6
7*
8
9*
10*
11*
12*
13
14*
15*
1.8.2

IRQ assignments for this motherboard

PCI slot 1
PCI slot 2
PCI slot 3
PCIe x1 slot 1
PCIe x1 slot 2
PCIe x16 slot
Onboard USB controller 1
Onboard USB controller 2
Onboard USB controller 3
Onboard USB 2.0 controller
Onboard LAN
Onboard Audio
Serial ATA
When using PCI cards on shared slots, ensure that the drivers support
"Share IRQ" or that the cards do not need IRQ assignments. Otherwise,
conflicts will arise between the two PCI groups, making the system
unstable and the card inoperable.
ASUS A8S-X SE
Priority
1
2
N/A
11
12
13
14
15
3
4
5
6
7
8
9
10
A B
shared —
— shared
— — shared
shared —
shared —
shared —
— —
— —
— —
— —
— —
— — shared
— shared
Standard Function
System Timer
Keyboard Controller
Programmable Interrupt
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
C D E
— — —
— — —
— —
— — —
— — —
— — —
— — used
— — — used
— — —
— — —
— used —
— —
— — —
F G H
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— —
— used —
— — used
— — —
— — —
— — —
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