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2-202-20
2-202-20
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Chapter 2: Basic installationChapter 2: Basic installation
Chapter 2: Basic installationChapter 2: Basic installation
Chapter 2: Basic installation
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
4 8 Intel
®
82801 FB/FBM SMBus Controller - 266A
6 9 Floppy Disk Controller
7 10 Printer Port (LPT1)*
8 3 System CMOS/Real Time Clock
9 4 Microsoft
®
ACPI-Compliant System
12 5 PS/2 Compatible Mouse Port*
13 6 Numeric Data Processor
14 7 Primary IDE Channel
* These IRQs are usually available for ISA or PCI devices.* These IRQs are usually available for ISA or PCI devices.
* These IRQs are usually available for ISA or PCI devices.* These IRQs are usually available for ISA or PCI devices.
* 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
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.
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 — — — — — used — —
PCI slot 2 — — — — — — used —
PCI Express x16 slot shared — — — — — — —
PCI Express x1 slot1 — shared — — — — — —
Onboard USB controller 1 — — — — — — — shared
Onboard USB controller 2 — — — shared — — — —
Onboard USB controller 3 — — shared — — — — —
Onboard USB controller 4 shared — — — — — — —
Onboard USB 2.0 controller — — — — — — — shared
Onboard Azalia Audio shared — — — — — — —
Onboard IDE Controller — — shared — — — — —
Onboard SATA Controller — — — shared — — — —
Onboard LAN — — — — shared — — —