Asus AX850 User's Guide download pdf (Page 39)

ASUS P4P800 SE motherboard

2-17

Standard Interrupt Assignments

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 Sound Card (sometimes LPT2)

6 14 Floppy Disk Controller

7* 15 Printer Port (LPT1)

8 3 System CMOS/Real Time Clock

9* 4 ACPI Mode when used

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

* These IRQs are usually available for ISA or PCI devices.

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.

2.5.3 Interrupt assignments

IRQ assignments for this motherboard

ABCDEFGH

PCI slot 1 — — — — — shared — —

PCI slot 2 — — — — — — shared —

PCI slot 3 — — — — — — — shared

PCI slot 4 — — — — shared — — —

PCI slot 5 — — — — — shared — —

AGP slot used — — — — — — —

Onboard USB 1.1/2.0 controller — — — — shared shared shared shared

Onboard LAN — — — — — — shared —

Onboard Audio — — used — — — — —

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Asus AX850 User's Guide Page 39