#RetroGraphic VT640
I recently rescued a couple of VT-100's from the salvage yard for parts.
One of them had an extra circuit board inside by Digital Engineering, and a
logo of `RETRO-GRAPHICS'. When attempting to use this gadget with an
RSX-11M TT driver, I would get some interesting and strange results. The
extra board also calls itself a `VT-640'. Does anyone know what it is?
Jerry Kilgore