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Interfacing an RGB monitor to a NeXT
  #1
Old 09-20-2005, 02:59 PM
John F Sandhoff
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Default Interfacing an RGB monitor to a NeXT

I once saw a schematic for interfacing an RGB monitor to a Colorslab
(anybody have a copy?) Has anyone put together an interface that
allows a standard (multisync) PC monitor to be driven from a B/W NextCube
or Nextstation? Doesn't seem like it's an unreasonable task... I'm
down to one good megapixel display and if it goes dim like the rest
of mine my Next will be unusable!!!

If you can, please 'cc' replies directly to me. Thanks!

-- John
John F Sandhoff sandhoff@csus.edu Sacramento, CA

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Interfacing an RGB monitor to a NeXT
  #2
Old 09-20-2005, 03:56 PM
David Evans
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Default Interfacing an RGB monitor to a NeXT

In article <dgq48r$7qr@news.csus.edu>,
John F Sandhoff <sandhoff@csus.edu> wrote:
Quote:
I once saw a schematic for interfacing an RGB monitor to a Colorslab(anybody have a copy?) Has anyone put together an interface thatallows a standard (multisync) PC monitor to be driven from a B/W NextCubeor Nextstation?


For colour machines the situation should be fairly standard. They spit
out sync-on-green, so you'll typically need some sort of gizmo to move
that to the sync pins on a VGA connector. There should be schematics
for doing this somewhere on the net.

The situation for mono machines is a little trickier as you need the
guts of a sound box or mono display in order to connect the keyboard
and what not. It's only one board, which isn't a big deal, and IIRC it
helpfully has an RCA jack that carries the video signal! You just need
to find a monitor that groks it; the above sync-on-green extraction
scheme may work on this too, but I'm not sure.

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David Evans
Faculty of Computer Science dfevans@bbcr.uwaterloo.ca
Dalhousie University, Halifax, Canada http://bbcr.uwaterloo.ca/~dfevans/
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