[OT] package for talking to usb device using visa protocol

[Micha Feigin <michf@post.tau.ac.il>]

Hopping that I didn't miss spell this, I am looking for a reference or 
preferably a library that would enable me to talk to a usb device that 
uses the vesa protocol. I found some info from national instruments that 
the device should be available under /dev but no code
Will be grateful for any pointers
thanks