Asus P5G-MX - Manual (Page 33)

ASUS P5G-MX 1-21
1.8.3 Interrupt assignments
* These IRQs are usually available for PCI devices.
IRQ assignments for this motherboard
A B C D E F G H
PCI slot 1 — — — — — shared — —
PCI Express x16 slot shared — — — — — — —
PCI Express x1 slot shared — — — — — — —
Onboard USB controller 1 — — — — shared — — —
Onboard USB controller 2 — — shared — — — — —
Onboard USB controller 3 — — — shared — — — —
Onboard USB 2.0 controller — — — — shared — — —
Onboard HD audio — — — shared — — — —
Onboard LAN — — — — used — — —
IDE controller — — — — — — shared —
SATA controller — — — — — — — shared
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.
Standard interrupt assignments
IRQ Standard Function
0 System Timer
1 Keyboard Controller
2 Re-direct to IRQ#9
4 Communications Port (COM1)*
5 IRQ holder for PCI steering*
6 Floppy Disk Controller
7 Printer Port (LPT1)*
8 System CMOS/Real Time Clock
9 IRQ holder for PCI steering*
10 IRQ holder for PCI steering*
11 IRQ holder for PCI steering*
12 PS/2 Compatible Mouse Port*
13 Numeric Data Processor
14 Primary IDE Channel