Re: GS ROM 1 vs ROM 3 VGC differences

[Rubywand <rubywand@swbell.net>]

Ed Eastman writes ...
> 
> aiiadict@gmail.com wrote:
> > What is your VGA Thingy?
> 
> Digital scan doubler using the 444 binmary weighted RGB signals from the
> VGC chip.  Can't seem to get the thing working.  Using an Al250 to do
> the conversion but i can't determine the input levels necessary or see
> the synch signals or etc.
> 
> I'm looking for assistance.  I have parts, diagrams and theory of
> operation and a custom circuit board that I just cant get to work for
> me.  :(
> 
> Thankx,
> Ed

     Unless it's a proprietary development thing, you could put the info up on
your AppleLinc site.

     In a more general vein, what does a scan doubler do? Like, do you just
send two correct width H syncs at the end of each line?


Rubywand