Hi,
Check out the Resource Library | Instrument Drivers | Development Tools | Labwindows CVI.
This will give you the wizard for generating the core code of GPIB/VXI drivers.
What you as what is the online manual CVI version 4.x - Instrument Driver Developers Guide. This maybe found at the above link. Or Get onto your Local NI.
(This link will get you the manual
ftp://ftp.ni.com/support/manuals/
you what 320684C.pdf)
That will get you going
ay Farmer
Regards
Ray Farmer
