[rescue] Parallax SBUS graphics card

[silcreval]

I came across an unusual graphics card from Parallax Graphics. This has various labels on it including 'Model 3600 multivideo'.

It has a regular 13W3 connector and a phono style connector as well.

I'm guessing this is some kind of video input / processing framebuffer? 

I'll give it a try in a sparcstation to see if anything happens, but I'm guessing this will need no doubt specialist drivers.

- Ian