Hardware and Software Configuration
Appendix C
GPIB-PCII/IIA for Graphics
C-16
© National Instruments Corp.
If you change the interrupt jumper setting from the default setting, record the
new setting on the GPIB-PCII/IIA Hardware and Software Configuration Form
in Appendix E, Customer Communication. Remember that you must run the
IBDIAG
diagnostic program and configure the software, as explained later in
this appendix, after you change any hardware configuration settings.
Possible Conflicts
Table C-4 lists some of the interrupt lines used by other PC plug-in interface
boards and adapters. This is by no means a complete list, but it may help in
determining possible interrupt conflicts. Symptoms of interrupt conflicts vary
widely. Conflicts can prevent the computer from booting. They may also cause
repeated time outs on GPIB function calls. When conflicts do surface, the
problems can exhibit themselves simply as strange behavior.
National Instruments has made every effort to select a default interrupt line that
will work. However, because of the numerous different interface boards
available for use in the PC, it is not possible to select an interrupt line that is
guaranteed to work in all systems. Therefore, be certain of your system’s
interrupt assignments before proceeding with installation.
Table C-4. Interrupt Lines Used by Other Devices
IRQ
Device
7
Parallel Port 1
Data Acquisition and Control (default)
GPIB-PCII/IIA
6
Diskette Controller
Fixed Disk and Diskette Drive
5
Parallel Port 2
PC-DIO-24 (default)
LabPC (default)
(continues)
