Interrupt Assignments - Asus P5N7A-VM Hardware User Manual

1.8.3

Interrupt assignments

IRQ Priority
0 1
1 2
2 –
3 11
4 12
5 13
6 14
7 15
8 3
9 4
10 5
11 6
12 7
13 8
14 9
15 10
* These IRQs are usually available for PCI devices.
IRQ assignments for this motherboard
External devices interrupt
PCI slot 1
PCI slot 2
PCI Express x16 slot
PCI Express x1 slot
Internal devices interrupt
Onboard USB controller
Onboard USB 2.0 controller
Onboard USB controller 1
Onboard USB 2.0 controller 1
Onboard LAN
Onboard SATA controller
Onboard HD Audido
Onboard VGA
ASUS P5N7A-VM
Standard function
System timer
Keyboard controller
Re-direct to IRQ#9
IRQ holder for PCI steering*
Communications port (COM1)*
IRQ holder for PCI steering*
Floppy disk controller
Printer port (LPT1)*
System CMOS/Real Time Clock
IRQ holder for PCI steering*
IRQ holder for PCI steering*
IRQ holder for PCI steering*
IRQ holder for PCI steering*
Numeric data processor
Primary IDE channel
Secondary IDE channel
PIRQ1 PIRQ2
shared shared
shared shared
— —
— —
MCP MCP
_USB _MAC
shared —
— —
shared —
— —
— shared
— —
— —
— —
PIRQ3 PIRQ4 PIRQ5
shared shared —
shared shared —
— — shared
— — —
MCP MCP
_AZA _IGPU
— —
— —
— —
— —
— —
— —
shared —
— shared
PIRQ6
—
—
—
shared
MCP MCP MCP
_IDE _USB2 _AHCI
— —
— shared
—
— shared
— —
— — shared
— —
— —
—
—
—
—
—
—
—
1-25