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Chapter 2 Configuration and Installation
© National Instruments Corporation 2-5 PC-DIO-96 User Manual
Interrupt Level Selection
There is one set of jumpers for interrupt selection on the PC-DIO-96 board. W1 is used for
selecting the interrupt level. The location of this jumper is shown in Figure 2-1.
The PC-DIO-96 board can connect to any one of six interrupt lines of the PC I/O Channel:
IRQ3, IRQ4, IRQ5, IRQ6, IRQ7, or IRQ9. Select the interrupt line by setting a jumper on W1.
The default interrupt line is IRQ5. To change to another line, remove the jumper from IRQ5 and
place it on the pins for another request line. Figure 2-3 shows the default factory setting for
IRQ5.
IRQ9
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
W1
Figure 2-3. Interrupt Jumper Setting for IRQ5 (Factory Setting)
The PC-DIO-96 can share interrupt lines with other devices because it uses a tri-state driver to
drive its selected interrupt line. For information on how to disable this driver, see Chapter 4,
Register-Level Programming.
Installation
The PC-DIO-96 can be installed in any unused 8-bit, 16-bit, or 32-bit expansion slot in your
computer. After you make any necessary changes and verify the switch and jumper settings,
record them using the PC-DIO-96 Hardware and Software Configuration Form in Appendix D,
Customer Communication. You are now ready to install the PC-DIO-96.
The following are general installation instructions, but consult the user manual or technical
reference manual of your personal computer for specific instructions and warnings. If you want
to install this board in an EISA-class computer, you can obtain a configuration file for the board
by contacting National Instruments.
1. Turn off your computer.
2. Remove the top cover or access port to the I/O channel.
3. Remove the expansion slot cover on the back panel of the computer.