ASUS P4SD-LA motherboard
5
4. Expansion slots
The motherboard has three 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 +0.8V and +1.5V 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.
Standard interrupt assignments
IRQ Priority Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 N/A Programmable Interrupt
3* 11 Communications Port (COM2)
4* 12 Communications Port (COM1)
5* 13 IRQ holder for PCI steering
6 14 Floppy Disk Controller
7* 15 Printer Port (LPT1)
8 3 System CMOS/Real Time Clock
9* 4 IRQ holder for PCI steering
10* 5 Advance AC’97 CODEC
11* 6 Standard PCI Graphics Adapter (VGA)
12* 7 PS/2 Compatible Mouse Port
13 8 Numeric Data Processor
14* 9 Primary IDE Channel
15* 10 Secondary IDE Channel
* These IRQs are usually available for ISA or PCI devices.
IRQ assignments for this motherboard
ABCDEFGH
PCI slot 1 —— — — —shared ——
PCI slot 2 ——————used —
PCI slot 3 ———————shared
AGP slot shared ———————
Onboard USB controller 1 shared ———————
Onboard USB controller 2 —— —shared ————
Onboard USB controller 3 ——used —————
Onboard USB controller 4 shared ———————
Onboard USB 2.0 controller ———————shared
Onboard LAN —— —shared ————
Onboard audio — used ——————
Onboard 1394 controller —— — — —shared ——
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