Asus Vintage - Manual (Page 30)

30 Chapter 2: Basic Installation
IRQ Priority Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 N/A Programmable Interrupt
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 Advance AC’97 CODEC
11* 6 Standard PCI Graphics Adapter (VGA)
12* 7 PS/2 Compatible Mouse Port
13 8 Numeric Data Processor
14* 9 Primary IDE Channel
15* 10 Secondary IDE Channel
2.7.4 Standard interrupt assignments
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.
2.7.5 IRQ assignments for this motherboard
A B C D E F G H
PCI slot 1 shared –– –– –– –– –– –– ––
PCI slot 2 –– used –– –– –– –– –– ––
PCI slot 3 –– –– shared –– –– –– –– ––
AGP slot shared –– –– –– –– –– –– ––
Onboard USB controller 1 –– –– –– –– used –– –– ––
Onboard USB controller 2 –– –– –– –– –– used –– ––
Onboard USB 2.0 controller –– –– –– –– –– –– –– used
Onboard LAN –– –– –– used –– –– –– ––
Onboard audio –– –– shared –– –– –– –– ––
* These IRQs are usually available for ISA or PCI devices.