Asus RS120-E4 PA2 User Guide - Page 32

Configuring an

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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 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 *These IRQs are usually available for ISA or PCI devices. PCI Bus Number, IDSEL, and IRQ assignments PATA controller SATA controller SMBus controller USB UHCI controller 1 USB UHCI controller 2 USB 2.0 EHCI controller BCM5721 #1 BCM5721 #2 ATI RAGE XL PCIX Slot 1 (64-bit) PCI Express Slot 2 PCI Slot 3 (32-bit) INTA# PIRQA# PIRQD# PIRQB# PIRQH# PIRQD# PIRQH# PIRQA# PIRQB# PIRQD# PIRQ0 PIRQA# PIRQE# INTB# PIRQ1 PIRQF# INTC# PIRQ2 PIRQG# INTD# PIRQ3 PIRQH# REQ# REQ1# PXREQ0 REQ0# GNT# GNT1# PXGNT0 GNT0# 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. 2-16 Chapter 2: Hardware setup

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Chapter 2:
Hardware setup
2-16
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#