Asus RS120-E4/PA2 - Manual (Page 31)

2-15 ASUS RS120-E4/PA2
2.5.3 Configuring an expansion card
After installing the expansion card, configure the it by adjusting the software
settings.
1. Turn on the system and change the necessary BIOS settings, if any. See
Chapter 5 for information on BIOS setup.
2. Assign an IRQ to the card. Refer to the following tables.
3. Install the software drivers for the expansion card.
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.
PCI Bus Number, IDSEL, and IRQ assignments
*These IRQs are usually available for ISA or PCI devices.
IRQ Priority Standard function
0 1 System Timer
1 2 Keyboard Controller
2 - 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
INTA# INTB# INTC# INTD# REQ# GNT#
PATA controller PIRQA#
SATA controller PIRQD#
SMBus controller PIRQB#
USB UHCI controller 1 PIRQH#
USB UHCI controller 2 PIRQD#
USB 2.0 EHCI controller PIRQH#
BCM5721 #1 PIRQA#
BCM5721 #2 PIRQB#
ATI RAGE XL PIRQD# REQ1# GNT1#
PCIX Slot 1 (64-bit) PIRQ0 PIRQ1 PIRQ2 PIRQ3 PXREQ0 PXGNT0
PCI Express Slot 2 PIRQA#
PCI Slot 3 (32-bit) PIRQE# PIRQF# PIRQG# PIRQH# REQ0# GNT0#