Asus PCH-DL User Manual - Page 35

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 INTA# INTB# INTC# INTD# PCI slot 1 IRQ_F# PCI slot 2 IRQ_G# PCI slot 3 IRQ_H# PCI-X slot 1 PI_IRQ0# PCI-X slot 2 PI_IRQ1# AGP Pro/8X slot IRQ_A# Onbd. USB controller #1 IRQ_A# Onbd. USB controller #2 IRQ_D# Onbd. USB controller #3 IRQ_C# Onbd. USB controller #4 IRQ_A# Onbd. USB 2.0 controller IRQ_H# Onbd. LAN controller (Intel 82547GI) IRQ_F# Onbd. RAID controller (Promise 20378) IRQ_H# Onbd. IDE controller IRQ_C# Onbd. SATA controller (6300ESB ICH) IRQ_C# Onbd. 1394 controller (TSB43AB22A) IRQ_E# Onbd. audio controller (AD1980) IRQ_B# IRQ_G# IRQ_H# IRQ_E# PI_IRQ1# PI_IRQ2# IRQ_B# - - - IRQ_H# IRQ_E# IRQ_E# IRQ_F# IRQ_F# IRQ_G# PI_IRQ2# PI_IRQ3# PI_IRQ3# PI_IRQ0# - - - - - - - - - - - - - - - - - - - - - - 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. ASUS PCH-DL motherboard 2-17