I spent alot of time trying to design a PIC based GPIB controller for
projects.
Trust me, it would be cheaper to buy a GPIB to digital I/O controller. I
found one
for around US$600 about 5 years ago from IO Tech. It has at least 40 digital
I/O
lines and is really easy to use in both Agilent VEE and LabVIEW. My
application
was also an ATE application. Had to drive some high power RF relays for
switching the
power. I just built another board that would do all the hard work that the
IO Tech box
couldn't do. The amount of time spent on trying to write the code and having
to buy the
IEE488.2 info will cost you more than buying an off the shelf system.

Best of luck!!
Steve

Steven Kosmerchock
Radio Frequency Systems
Phoenix,  Arizona  USA
(WORK) www.rfsamericas.com

www.geocities.com/researchtriangle/lab/6584

"Great spirits have always encountered violent
oppposition from mediocre minds."--A.Einstein

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