Asus P5GC-VM Pro User Manual - Page 34

1.8.3 Interrupt assignments Standard interrupt assignments IRQ Standard Function 0 System Timer 1 Keyboard Controller 2 Re-direct to IRQ#9 3 COM2 4 Communications Port (COM1) 5 IRQ holder for PCI steering* 6 Floppy Disk Controller 7 Printer Port (LPT1)* 8 System CMOS/Real Time Clock 9 Microsoft ACPI-Compliant system 10 IRQ holder for PCI steering* 11 IRQ holder for PCI steering* 12 PS/2 Compatible Mouse Port* 13 Numeric Data Processor 14 Primary IDE Channel 15 Slave IDE * These IRQs are usually available for ISA or PCI devices. IRQ assignments for this motherboard PCI slot 1 PCI slot 2 PCI Express X1 slot PCI Express x16 slot Onboard USB controller 1 Onboard USB controller 2 Onboard USB controller 3 Onboard USB controller 4 Onboard USB 2.0 controller Onboard IDE controller Onboard SATA controller Onboard SMBus controller Onboard Azalia controller Onboard VGA Onboare LAN 8111C A B - - - - shared - shared - - - - shared - - - - - - - - - - - - - - shared - - shared C D E F G H - - - shared - - - - shared - - - - - - - - - - - - - - - - - shared - - - - - - - - - shared - - - - - - shared - - - - - - shared - - - - - - - shared - - - - - - 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 will arise between the two PCI groups, making the system unstable and the card inoperable. 1-22 Chapter 1: Product introduction