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2.6
Expansion Slots
In the future, you may need to install expansion cards. The following sub?sections
describe the slots and the expansion cards that they support.
Warning! Make sure to unplug the power cord before adding or removing expan-
sion cards. Failure to do so may cause you physical injury and damage
motherboard components.
2.6.1
Installing an Expansion Card
1.
Before installing the expansion card, read the documentation that came with it
and make the necessary hardware settings for the card.
2.
Remove the system unit cover (if your motherboard is already installed in a
chassis).
3.
Remove the bracket opposite the slot that you intend to use. Keep the screw for
later use.
4.
Align the card connector with the slot and press firmly until the card is com-
pletely seated on the slot.
5.
Secure the card to the chassis with the screw you removed earlier.
6.
Replace the system cover.
2.6.2
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.
2.
Assign an IRQ to the card if needed. Refer to the tables on the next page.
3.
Install the software drivers for the expansion card.
2.6.3
Standard Interrupt Assignments
IRQ
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
* There IRQs are usually available for ISA or PCI device.
SIMB-A01 User Manual
Priority
Standard Function
1
System Timer
2
Keyboard Controller
-
Redirect to IRQ#9
11
IRQ holder for PCI streering*
12
Communications Port (COM1)*
13
IRQ holder for PCI streering*
14
Floppy Disk Controller
15
Printer Port (LPT)*
3
System CMOS/Rear Time
4
IRQ holder for PCI streeing*
5
IRQ holder for PCI streeing*
6
IRQ holder for PCI streeing*
7
PS/2 Compatible Mouse Port*
8
Numeric Data Processor
9
Primary IDE Channel
10
Secondary IDE Channel
20
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