Another tip shop find – this time a Macray CCTV switcher thing. Not entirely sure what this is supposed to do, other than switch video in a CCTV system. It’s pretty basic, with a PSU and a bunch of relay boards. I bought it for the Euro card enclosure.
Another tip shop find – this time a PACOM 3170 video “thing”. I realised after I made the video that the identification overlay that I think this produces would require a video source to generate that, and the video cards don’t have that, and it’s unlikely the microprocessor is bit-banging the video. BUT, I missed the obvious – there’s provision for a daughtercard on each video card, with pins labelled “VSYNC, HSYNC, ID VIDEO” amongst others on one side, and the other side has serial in/out, ID0-3 pins (device select?). ...