Standard Interrupt Assignments; Irq Assignments For This Motherboard - Asus NRL-LS533 User Manual

Standard Interrupt Assignments

IRQ
0
1
2
3*
4*
5*
6
7*
8
9*
10*
11*
12*
13
14*
15*
*
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
Onboard BCM5702 controller
Onboard VGA controller
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 NRL-LS533 motherboard user guide
Priority
1
2
N/A
11
12
13
14
15
3
4
5
6
7
8
9
10
PCI INTA PCI INTB
3
4
5
6
7
2
1
Standard Function
System Timer
Keyboard Controller
Programmable Interrupt
Communications Port (COM2)
Communications Port (COM1)
Sound Card (sometimes LPT2)
Floppy Disk Controller
Printer Port (LPT1)
System CMOS/Real Time Clock
ACPI Mode when used
IRQ Holder for PCI Steering
IRQ Holder for PCI Steering
PS/2 Compatible Mouse Port
Numeric Data Processor
Primary IDE Channel
Secondary IDE Channel
PCI INTC
8 13
9 14
10 15
11 8
12 9
— —
— —
PCI INTD
10
11
12
13
14
—
—
2-13