Asus A7N8X-LA User Manual download pdf (Page 19)

ASUS A7N8X Motherboard

1-9

1.8.2 Standard Interrupt Assignments

IRQ Standard Function

0 System Timer

1 Keyboard Controller

2 Programmable Interrupt Controller

3* USB Universal Host Controller

4* Communications Port (COM1)

5* Onboard Audio

6 Standard Floppy Disk Controller

7* Printer Port (LPT1)

8 System CMOS/Real Time Clock

9* Onboard LAN

10* USB Universal Host Controller

11* Onboard VGA

12* PS/2 Compatible Mouse Port

13 Numeric Data Processor

14* Ultra ATA Controller

15* Secondary Ultra ATA Controller

*These IRQs are usually available for ISA or PCI devices.

IRQ assignments for this motherboard

ABCD

PCI slot 1 shared ———

PCI slot 2 ———used

PCI slot 3 ——used —

PCI slot 4 — used ——

PCI slot 5 shared ———

1.8.3 AGP slot

This motherboard has an Accelerated Graphics Port (AGP) slot that supports

+1.5V AGP Pro/8X cards. Note the notches on the card golden fingers to ensure

that they fit the AGP slot on your motherboard.

A7N8X

A7N8X Accelerated

Graphics Port (AGP8X)

TOP VIEW

Rib (inside slot) Rib

20-pin bay

28-pin bay

AGP Card without Retention Notch

Normally, 6 IRQs are free for expansion cards. Sometimes IRQs are “shared” by

more than one function; in this case, IRQ assignments are swapped automatically or

adjusted through the BIOS firmware.

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Asus A7N8X-LA User Manual Page 19

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