User`s manual

i915GV-INA 1-17
Standard interrupt assignments
* 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
IRQor that the cards do not need IRQ assignments; otherwise, conicts will
arise between the two PCI groups, making the system unstable and the card
inoperable.
1.5.3 Interrupt assignments
IRQ Priority Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 - Re-direct to IRQ#9
3 11 Communications Port (COM2)*
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
A B C D E F G H
PCI slot 1 shared
PCI slot 2 u
sed
Onboard USB controller 1 s
hared
Onboard USB controller 2 shared
Onboard USB controller 3 shared
Onboard USB controller 4 used
Onboard USB 2.0 controller s
hared
Onboard HDA Audio shared
Onboard IDE Controller shared
Onboard SATA Controller shared
Onboard PCI LAN (1000 Mbps) shared
Onboard IEEE 1394a controller s
hared