🚀 go-pugleaf

In article <30824@castle.ed.ac.uk> rych@festival.ed.ac.uk (R Hawkes) writes:
>We want to drive a RGB TTL monitor (i.e. an old BBC CUB
>monitor) from an Archimedes and would like to know if anyone 
>out there has already tried it and if there are any problems?

Not tried it, but know a little about the subject.

TTL monitors (as opposed to analogue RGB monitors) accept *BINARY*
signals on their RGB lines. That is, you can only have the primaries,
complementaries, white and black. For the Archimedes, this is a bit of
a let-down - yes, it will work (provided the levels trigger as 1s, and
I *think* they would - just), but you won't be impressed.

I believe Microvitec have foreseen this problem, however, and have a
little modification they can do to make such CUBs accept analogue
input. If you ask them, you might find that you're in luck.

--Clive.