Quick start manual

A7V-VM User’s Manual 11
2. HARDWARE SETUP
Interrupt Request Table for this Motherboard
Interrupt requests are shared as shown by the following table:
INT-A INT-B INT-C INT-D
PCI slot 1 shared ———
PCI slot 2 — shared ——
PCI slot 3 ——not shared —
AGP slot shared ———
Onboard LAN controller — shared ——
Onboard Audio/AMR ——not shared —
IMPORTANT: If using PCI cards on shared slots, make sure that the drivers
support “Share IRQ” or that the cards do not need IRQ assignments. Conflicts
will arise between the two PCI groups that will make the system unstable or
cards inoperable.
The following table lists the default IRQ assignments for standard PC devices. Use
this table when configuring your system and for resolving IRQ conflicts.
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 enabled
10* 5 LAN Controller
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.
2. H/W SETUP
Expansion Cards