Standard Interrupt Assignments; Irq Assignments For This Motherboard - Asus P4S800 User Manual

1.10.1 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 ISA or PCI devices.

1.10.2 IRQ assignments for this motherboard

PCI slot 1
PCI slot 2
PCI slot 3
PCI slot 4
PCI slot 5
WiFi slot
AGP slot
Onboard USB 1.1/2.0 controller —
Onboard LAN
Onboard Audio
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 P4S800 motherboard user guide
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
—
— —
— —
Standard Function
System Timer
Keyboard Controller
Programmable Interrupt
Communications Port (COM2)
Communications Port (COM1)
IRQ holder for PCI steering
Floppy Disk Controller
Printer Port (LPT1)
System CMOS/Real Time Clock
IRQ holder for PCI steering
Advance AC'97 CODEC
Standard PCI Graphics Adapter (VGA)
PS/2 Compatible Mouse Port
Numeric Data Processor
Primary IDE Channel
Secondary IDE Channel
C D E
— — —
shared — —
— shared —
— — —
— — —
— — —
— — —
— — shared shared shared shared
— shared —
shared — —
F G H
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
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