Intel's library info
Download directly from SourceForge

RvCAD short for Robot Vision CAD is a drag and drop pipeline editor for video streams or images. Win32 / Linux / OSX

ViscaCmd.exe - a Windows command line app to send simple Visca commands on a COM port (fixed at 38400 baud 8N1) Readme.txt
ViscaCmd.zip NOT AVAILABLE YET - the same Windows command line app with VC6 source

libVisca on Sourceforge is a Linux library for Visca commands
j3soft has lots of info and their own software
Thomas Moeslund's site, long discussions and some links

EVI D30 Command List, VISCA RS-232C, 20 Page PDF
EVI D70 Product sheet, 4 page PDF
Visca Protocol for EVI series, 7 Page PDF
Visca Wiring Diagram pinouts, 1 Page PDF
EVD RS232 Operation Manual, English / Francais / Deutsch / Italiano / Espanol, 69 Page PDF