Asus AW1500-I5 PP-DLW User Manual - Page 38

Standard Interrupt Assignments, IRQ assignments for this motherboard

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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 PCI INTA PCI-X slot 1 PBIRQ0 PCI-X slot 2 PBIRQ4 PCI-X slot 3 PBIRQ8 PCI-X slot 4 PAIRQ0 PCI slot 1 PIRQF AGP Pro slot PIRQA Onboard 82540EM controller PIRQD PCI INTB PBIRQ1 PBIRQ5 PBIRQ9 PAIRQ1 PIRQG PIRQB - PCI INTC PBIRQ2 PBIRQ6 PBIRQ10 PAIRQ2 PIRQH - - PCI INTD PBIRQ3 PBIRQ7 PBIRQ11 PAIRQ3 PIRQE - - 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. 2-12 Chapter 2: Hardware information

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2-12
Chapter 2: Hardware information
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
PCI INTA
PCI INTB
PCI INTC
PCI INTD
PCI-X slot 1
PBIRQ0
PBIRQ1
PBIRQ2
PBIRQ3
PCI-X slot 2
PBIRQ4
PBIRQ5
PBIRQ6
PBIRQ7
PCI-X slot 3
PBIRQ8
PBIRQ9
PBIRQ10
PBIRQ11
PCI-X slot 4
PAIRQ0
PAIRQ1
PAIRQ2
PAIRQ3
PCI slot 1
PIRQF
PIRQG
PIRQH
PIRQE
AGP Pro slot
PIRQA
PIRQB
—
—
Onboard 82540EM controller
PIRQD
—
—
—
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.