Asus P4S133 Motherboard DIY Troubleshooting Guide - Page 33

2.6.2 Configuring an expansion card After physically installing the expansion card, configure the card by adjusting the software settings. 1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 4 for information on BIOS setup. 2. Assign an IRQ to the card. Refer to the tables on the next page. 3. Install the software drivers for the expansion card. 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 Sound Card (sometimes LPT2) 6 14 Floppy Disk Controller 7* 15 Printer Port (LPT1) 8 3 System CMOS/Real Time Clock 9* 4 ACPI Mode when used 10* 5 IRQ Holder for PCI Steering 11* 6 IRQ Holder for PCI Steering 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 A PCI slot 1 shared PCI slot 2 - PCI slot 3 - PCI slot 4 - PCI slot 5 shared Onboard USB controller HC0- Onboard USB controller HC1- AGP shared Onboard Audio - Onboard LAN - B - shared shared - C - - shared shared D - - - shared - shared shared - - - When using PCI cards on shared slots, ensure that the drivers support "Share IRQ" or that the cards do not need IRQ assignments. Otherwise, conflicts may arise, making the system inoperative. ASUS P4S133 motherboard user guide 21