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2-212-21
2-212-21
2-21
2.5.32.5.3
2.5.32.5.3
2.5.3
Interrupt assignmentsInterrupt assignments
Interrupt assignmentsInterrupt assignments
Interrupt assignments
Standard interrupt assignmentsStandard interrupt assignments
Standard interrupt assignmentsStandard interrupt assignments
Standard interrupt assignments
IRQIRQ
IRQIRQ
IRQ
PriorityPriority
PriorityPriority
Priority
Standard FunctionStandard Function
Standard FunctionStandard Function
Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 — Re-direct to IRQ#9
3 11 IRQ holder for PCI steering*
4 12 Communications Port (COM1)*
5 13 IRQ holder for PCI steering*
6 14 Floppy Disk Controller
7 15 Printer Port (LPT1)*
8 3 System CMOS/Real Time Clock
9 4 IRQ holder for PCI steering*
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 motherboardIRQ assignments for this motherboard
IRQ assignments for this motherboardIRQ assignments for this motherboard
IRQ assignments for this motherboard
AA
AA
A
BB
BB
B
CC
CC
C
DD
DD
D
EE
EE
E
FF
FF
F
GG
GG
G
HH
HH
H
PCI slot 1 — — — — — shared — —
PCI slot 2 — — — — — — shared —
PCI slot 3 — — — — — — — shared
Onboard IDE — — — shared ————
Onboard 1394 — — — — — shared — —
Onboard LAN2 — — — — — shared — —
PCIE x16 1 shared — — — ————
PCIE x16 2 shared — — — ————
PCIE x1 — — — shared ————
USB controller 1 — — — — shared — — —
USB controller 2 — used — — ————
USB controller 3 — — used — ————
USB controller 4 — — — shared ————
USB 2.0 controller — — — — shared — — —
Serial ATA — — — — — — — shared
IDE — — — — — — shared —
Azalia — — — shared ————