Re: RGB monitor compatibility

[ab616@chebucto.ns.ca (Tony Cianfaglione)]

James Poore (aw133@lafn.org) wrote:

> Whoa!  The Commodore monitor wont work with the GS because the GS 
> has analog RGB!  The Horiz Scan rate for a GS is 15,750Hz jus 
> like the NTSC standard.  Even if it were 15.5, it could be 
> tweaked to lock on.             

   Yes, I said that, only not in exactly those words.  I knew 'something'
was 15...

> As far as sync goes, normally monitors that have separate inputs for 
> Horiz and Vert Sync can use composite sync applied to the Horiz only, or 
> both inputs but never Vert only.

   Vertical only works for me, horizontal slops all over the place.  Using
the GS with my digital Commodore monitor brings up an okay-looking finder
screen but it's in shades of yellow only.  I can't get any colors to
work other than yellow.

> Now as far as hookups go, The IIe has a Digital RGB with an Apple 80 col 
> RGB board.  The IIe can also use a video7 which is Digital and finally,]
> The IIgs is analog RGB, and the IIc is digital.

   I have my IIc pumped through a 15 pin Video 7 to my GS monitor.  It
looks really nice although I'm losing 8 colors.  Text is really sharp and
clear however.  The IIgs is running through my Atari ST monitor which uses
the same scan rate of whatever you said above.  I have a switch box hooked
to the ST monitor and can switch between the GS and the ST.  I used the ST
monitor instead of the GS monitor because the Atari runs the sound out
through the monitor unlike the GS.

Tony