I have wondered about RGB, the I/O board does output
an RGB signal along
with Intensity, Horizontal Sync and Vertical Sync, but I don't know if I
could
feed that to a monitor that accepts RGB signals as I
don't know what the
voltage levels should be. I have a VR241 which seems to have suitable
inputs
but I don't know if I dare send the signals from
the I/O board straight to
the
VR241. I can't find a manual for it.
Rob,
It looks like the VR241 accepts TTL video
https://en.wikipedia.org/wiki/Rainbow_100#Graphics
Dave