Expansion Slots; Standard Interrupt Assignments; Irq Assignments For This Motherboard - Asus Motherboard P4V800-X User Manual

1.10 Expansion slots

The motherboard has five 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.
NOTE: The AGP slot supports only 1.5V and 0.8V AGP cards.
2. Turn on the system and change the necessary BIOS settings, if any. See
Chapter 2 for BIOS information.
3. Assign an IRQ to the card. Refer to the tables below.
4. 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
AGP slot
Onboard USB controller HC0 shared
Onboard USB controller HC1 shared
Onboard USB controller HC2
Onboard USB controller HC3
Onboard USB 2.0 controller
Onboard LAN
Onboard audio
1-14
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 —
— —
Standard Function
System Timer
Keyboard Controller
Programmable Interrupt
Communications Port (COM2)
Communications Port (COM1)
Sound card (sometimes LPT2)
Floppy Disk Controller
Printer Port (LPT1)
System CMOS/Real Time Clock
ACPI Mode when used
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
— — —
shared — —
— used —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
shared — —
— — —
shared — —
Chapter 1: Product introduction
F G H
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