Real Life Syndrom caught me.
I recently found a backup / copy of the "Rainbow 100 Home Page" (by Jeff Armstrong ~ 2003) on ClassicComputers.
If anyone wants to contribute to the Rainbow, this is a good place to start.
The VT100 subsystem needs an overhaul, or a more general approach (see my comments in vtvideo.c).
@Lord Nightmare: how do you dump an open collector chip (arbitrator)?