Chapter 2
Hardware Configuration and Installation
© National Instruments Corp.
2-5
GPIB-PCIIB/MS-DOS
Interrupt Selection
The GPIB-PCIIB interface board can use one of six interrupt lines of the PC
I/O channel. The interrupt line is selected by placing a jumper across the
double rows of pins which are located at the lower left side of the
GPIB-PCIIB (see Figure 2-1). You must select an interrupt line and place
the jumper in the appropriate position to enable that line. The interrupt
lines that the GPIB-PCIIB can use are I7, I6, I5, I4, I3, and I2.
Once you have selected an interrupt line, place the jumper on the
appropriate pins to select the interrupt line. Figure 2-3 shows four of the
allowable jumper configurations.
c. Interrupt Line 2 Selected
b. Interrupt Line 5 Selected
d. No Interrupt Line Selected
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I7
I6
I5
I4
I3
I2
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I7
I6
I5
I4
I3
I2
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(Default Setting)
a. Interrupt Line 7 Selected
I7
I6
I5
I4
I3
I2
I7
I6
I5
I4
I3
I2
Figure 2-3. Interrupt Jumper Setting Options
