Asus ESC500 User Manual - Page 39

Configuring an expansion card - driver

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2.7.3 Configuring an expansion card After installing the expansion card, configure it by adjusting the software settings. 1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 4 for information on BIOS setup. 2. Assign an IRQ to the card. Refer to the tables on the next page. 3. Install the software drivers for the expansion card. • 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. Refer to the table on the next page for details. • By default, if you install a discrete graphics card on the PCIe x16 slot, the onboard GPU will be automatically disabled. Connect the VGA cable to the discrete graphics card first when using a discrete graphics card. Standard Interrupt assignments IRQ Priority Standard function 0 1 System Timer 1 2 Keyboard Controller 2 - Programmable Interrupt 4 12 Communications Port (COM1) 5 13 IRQ Holder for PCI Steering 6 14 Reserved 7 15 Reserved 8 3 System CMOS/Real Time Clock 9 4 IRQ Holder for PCI Steering 10 5 IRQ Holder for PCI Steering 11 6 IRQ Holder for PCI Steering 12 7 Reserved 13 8 Numeric Data Processor 14 9 Primary IDE Channel ASUS ESC500 G2 2-21

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2-21
ASUS ESC500 G2
2.7.3
Configuring an expansion card
After installing the expansion card, configure it by adjusting the software settings.
1.
Turn on the system and change the necessary BIOS settings, if any. See
Chapter 4 for information on BIOS setup.
2.
Assign an IRQ to the card. Refer to the tables on the next page.
3.
Install the software drivers for the expansion card.
•
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. Refer to the table on the next page for
details.
•
By default, if you install a discrete graphics card on the PCIe x16 slot, the
onboard GPU will be automatically disabled. Connect the VGA cable to the
discrete graphics card first when using a discrete graphics card.
Standard Interrupt assignments
IRQ
Priority
Standard function
0
1
System Timer
1
2
Keyboard Controller
2
-
Programmable Interrupt
4
12
Communications Port (COM1)
5
13
IRQ Holder for PCI Steering
6
14
Reserved
7
15
Reserved
8
3
System CMOS/Real Time Clock
9
4
IRQ Holder for PCI Steering
10
5
IRQ Holder for PCI Steering
11
6
IRQ Holder for PCI Steering
12
7
Reserved
13
8
Numeric Data Processor
14
9
Primary IDE Channel