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Standard Interrupt Assignments
IRQ
0
1
2
3 *
4 *
5 *
6 *
7 *
8
9 *
10 *
11 *
12 *
13
14 *
15 *
* These IRQs are usually available for ISA or PCI devices.
2-5-3 Interrupt Request Table For This Motherboard
Interrupt request are shared as shown the table below:
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Onboard VGA
Onboard LAN
Onboard USB 1
Onboard USB 2
Onboard USB 3
Sound
IMPORTANT!
2-5-4 AGP Slot
This motherboard provides an AGP Slot, only support the 1.5V 4X/0.8V 8X AGP VGA card.
Do not use AGP 2X card (3.3V) in this motherboard. It will burn and damage the motherboard due to
Intel® 865 chipset can not support AGP 2X (3.3V).
Priority
N/A
System Timer
N/A
Keyboard Controller
N/A
Programmable Interrupt
8
Communications Port (COM2)
9
Communications Port (COM1)
6
Sound Card (sometimes LPT2)
11
Floppy Disk Controller
7
Printer Port (LPT1)
N/A
System CMOS/Real Time Clock
10
ACPI Mode when enabled
3
IRQ Holder for PCI Steering
2
IRQ Holder for PCI Steering
4
PS/2 Compatible Mouse Port
N/A
Numeric Data Processor
5
Primary IDE Channel
1
Secondary IDE Channel
INT A
INT B
√
√
√
√
If using PCI cards on shared slots, make sure that the drivers support "Shared
IRQ" or that the cards don't need IRQ assignments. Conflicts will arise between
the two PCI groups that will make the system unstable or cards inoperable.
Standard function
INT C
INT D
INT E
√
√
√
√
10
INT F
INT G
√
√
INT H
√
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