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2.6.4
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 table Standard Interrupt assignments in section Interrupt assignments for
more information.
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 may arise between the two
PCI groups, making the system unstable and the card inoperable.
2.6.5
Interrupt assignments
Standard Interrupt assignments
IRQ
Priority
0
1
1
2
2
-
4*
12
5*
13
6
14
7*
15
8
3
9*
4
10*
5
11*
6
12*
7
13
8
14*
9
15*
10
* These IRQs are usually available for ISA or PCI devices.
RS720Q-E8-RS12
Standard function
System Timer
Keyboard Controller
Programmable Interrupt
Communications Port (COM1)
--
Floppy Disk Controller
--
System CMOS/Real Time Clock
ACPI Mode when used
IRQ Holder for PCI Steering
IRQ Holder for PCI Steering
PS/2 Compatible Mouse Port
Numeric Data Processor
Primary IDE Channel
Secondary IDE Channel
2-19
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