National Instruments PCI-GPIB Getting Started page 24

Installation Verification and Troubleshooting Chapter 4
NI-488.2M driver and rebuilding the kernel. Refer to Chapter 3, Software
Installation and Configuration , for information on installing the driver.
Why does ibfind return -1 with an iberr value of EDVR?
The driver might not be properly installed. Check your installation. You
can check the installation by verifying the boot messages log (usually
/var/adm/messages) to see if any errors occurred during installation.
If the driver is properly installed, some of the GPIB special files might be
missing. Try running kmknod again by entering /sbin/kmknod at the
command prompt.
Why do the device special files not get created even after I run the
kmknod utility?
There could be duplicate entries for one or more kernel layered products in
the NAME .list file in the /usr/sys/conf directory (where NAME is the
name of your system configuration file which, by default, is the system host
name). If so, edit the file by commenting out all such entries except one by
putting a # sign at the beginning of the line containing the entry. Then
rebuild the kernel by entering the command doconfig -c NAME and
reboot the system with the new kernel.
Where is my GPIB base directory?
Your GPIB base directory is /usr/opt/PCIGPIB100 . It includes all of
your GPIB-related files.
How do I use the NI-488.2M language interface?
For information about using the NI-488.2M language interface refer to the
Programming Considerations section of Chapter 5, Using Your NI-488.2M
Software.
When would I use ibic?
You can use ibic to test and verify instrument communication,
troubleshoot problems, and develop your application program. For more
PCI-GPIB for Digital UNIX 4-4 © National Instruments Corp.