Asus a7n8xx Motherboard DIY Troubleshooting Guide - Page 19

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. 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 PCI slot 1 PCI slot 2 PCI slot 3 PCI slot 4 PCI slot 5 ABCD shared - - - - - - used - - used - - used - - 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 Keyed for 1.5v A7N8X-X Accelerated Graphics Port (AGP) ASUS A7N8X-X Motherboard 1-9