Expansion Slots; Standard Interrupt Assignments; Irq Assignments For This Motherboard - Asus P4S-X User Manual

1.10 Expansion slots

The motherboard has six PCI slots and one Accelerated Graphics Port (AGP) slot.
To install and configure an expansion card:
1. Install an expansion card following the instructions that came with the chassis.
2. Turn on the system and change the necessary BIOS settings, if any. See
Chapter 2 for BIOS information.
3. Install the drivers and/or software applications for the expansion card
according to the card documentation.

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
PCI slot 6
AGP slot
Onboard USB controller 1
Onboard USB controller 2
Onboard USB controller 3
Onboard USB 2.0 controller
Onboard LAN (optional)
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 P4S-X 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 —
— —
— —
— —
— —
— —
— —
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 — —
— — —
— — used
— — —
— — —
— — —
— shared —
shared — —
F G H
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
used — —
— used —
— — used
— — —
— — —
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