So Stuart sent me a 9958 with the challenge to re-create a plug in video board upgrade.
I built a 9938+9995 standalone wirewrap 30 years ago, so this is just fun, but it has been done before (OPA SoB, Dijit.)
I got to thinking, what about a DUAL 9958?
The VDP RAM ports could be switched to mirrored, or just one screen getting focus, or operated independently as two ports.
That's seriously weird. What would anyone do with it? Support for a second graphics screen would be e