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Table 2-3 lists the industry-standard usage for interrupts 2 to 7; use this
table as a guide when selecting an interrupt level.
Table 2-3. Standard Interrupt Usage
Interrupt (IRO)
Level
2
Usage
(if device exists)
Reserved (XT), IRQ 8 to 15 (15)
3
C
O
M
2
or SDLC
5
6
7
Installing the Board
COM I or SDLC
Hard disk (XT), LPT (AT)
Floppy disk
LPT
Caution:
Installing or removing a board while power is on can damage
your computer.
Use the following steps to install a P10-12 board in an accessory slot of
your computer:
1. T u r n off power to the computer and all attached equipment.
2. Remove the computer chassis cover.
3. Select an unoccupied accessory slot, and remove the corresponding
blank plate from the I/O connector panel.
4. Insert and secure the board in the selected slot.
5. Replace the computer cover.
6. T u r n on power to the computer.
2-5
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