Standard interrupt assignments, Irq assignments for this motherboard – Asus A8V-VM Ultra User Manual
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ASUS A8V-VM Ultra
Standard interrupt assignments
IRQ
Priority
Standard Function
0
1
System Timer
1
Keyboard Controller
-
Programmable interrupt
3
11
Communications Port (COM)*
4
1
-
5
13
IRQ holder for PCI steering*
6
14
Floppy Disk Controller
15
Printer Port (LPT1)*
8
3
System CMOS/Real Time Clock
9
4
IRQ holder for PCI steering*
10
5
MIDI port*
11
6
IRQ holder for PCI steering*
1
PS/ 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
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.
A
B
C
D
E
F
G
H
PCI slot 1
shared —
—
—
—
—
—
—
PCI slot
— shared
—
—
—
—
—
—
PCI Express x16 slot
—
—
—
—
—
—
— shared
PCI Express x1 slot 1
—
—
—
—
—
—
— shared
Onboard USB controller 0
shared —
—
—
—
—
—
—
Onboard USB controller 1
— shared
—
—
—
—
—
—
Onboard USB controller
—
—
shared
—
—
—
—
Onboard USB controller 3
—
—
— shared —
—
—
—
Onboard EHCI controller
—
—
shared —
—
—
—
—
Onboard SATA Controller
— shared
—
—
—
—
—
—
Onboard Audio Controller
— shared
—
—
—
—
—
—
Onboard LAN
shared —
—
—
—
—
—
—
Integrated graphics shared —
—
—
—
—
—
—