[plug] 20" DEC colour monitor, how to resolve sync?

[Doug Clulow]

Hi All

I just received a monitor bought in Adelaide, it is a DEC VR290 with
three BNC connectors, RGB with sync on green.  I am hoping someone knows
how I make it work..  I have found a copy of modeline / clock settings,
but don't know how to set up the cable.. I have a Trio 64V2 video card
which I have not yet made to work (well) with Linux, I also have  Cirrus
Logic 5440, which worked well but with limited colours due ot only 1M of
video RAM.

Also, if anyone has a copy of the technical manual or circuit diags for
the monitor which I could borrow/hire/buy, I may be able to work out how
to modify the beast to work with a wider range of OSs or cards.

Regards

Doug