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ASUS A7N8X-X 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* External AGP card
12* PS/2 Compatible Mouse Port
13 Numeric Data Processor
14* Primary 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 8X cards. Note the notches on the card golden fingers to ensure that
they fit the AGP slot on your motherboard.
A7N8X-X
®
A7N8X-X Accelerated Graphics Port (AGP)
Keyed for 1.5v
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.