Interrupt assignments, Irq assignments for this motherboard – Asus M3N78-EH User Manual
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ASUS M3N78-EH
1-19
* These IRQs are usually available for ISA or PCI devices.
interrupt assignments
IRQ
Standard function
1
Standard 101/102-Key or Microsoft natural PS/2 keyboard
2
High precision event timer
4
Communications Port (COM 1)*
6
Standard floppy disk controller
8
High precision event timer
9
Microsoft ACPI-compliant system
12
PS/2 compatible mouse
13
Numeric data processor
11
NVIDIA nForce PCI system management
17
NVIDIA GeForce 6800 series GPU
17
PCI standard PCI to PCI bridge
18
PCI standard PCI to PCI bridge
19
PCI standard PCI to PCI bridge
20
NVIDIA network bus enumerator
20
Standard enhanced PCI to USB host controller
20
Standard bisync IDE channel
21
Standard enhanced PCI to USB host controller
22
Microsoft UAA bus driver for high definition audio
22
NVIDIA nForce system management controller
23
Standard OpenHCD USB host controller
23
Standard OpenHCD USB host controller
LNKA LNKB LNKC LN0A LNT2A LNT3A
PCI Slot 1
shared
–
–
–
–
–
PCI Slot 2
–
shared
–
–
–
–
PCI Slot 3
–
–
shared
–
–
–
PCIEX16 Slot
–
–
–
shared
–
–
PCIEx1 Slot 1
–
–
–
–
shared
–
PCIEx1 Slot 2
–
–
–
–
–
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.
IRQ assignments for this motherboard