[Coco] CoCo3 RBG Video Questions

[Kevin Becker]

You just posted this a little while ago and yet I had totally forgotten
about it.  I still need to check it out myself.
On Thu, 2020-05-28 at 20:23 +0000, rietveld rietveld wrote:
> Just run this quick patch when you want to play any coco1/2 game that
> uses artifacting
> ‎‎https://colorcomputerarchive.com/search?q=rgb+patch+utility+&cat=
> 
> 
>   Original MessageFrom: Kevin BeckerSent: Thursday, May 28, 2020 4:17
> PMTo: CoCoList for Color Computer EnthusiastsReply To: CoCoList for
> Color Computer EnthusiastsSubject: Re: [Coco] CoCo3 RBG Video
> Questions
> 
> Yeah, artifact colors don't work on RGB.  Solutions like the Switch-
> a-Roo let you flip over to composite while still connecting to a
> modernmonitor so you can have the best of both worlds.That being
> said, I think it would be worth it to document the"fiddling" you did
> with the Extron so that can be documented for otherpotential
> users.  There are a lot of VGA monitors in the world thatwould be
> nice to use with CoCos.
> On Thu, 2020-05-28 at 16:09 -0400, Jason Reighard wrote:
> > Sounds like PMODE 4 artifact colors which do not work on RGB
> > https://en.wikipedia.org/wiki/Composite_artifact_colors
> > 
> > 
> > JasonOn Thu, May 28, 2020, 3:51 PM Frank Thompson <
> > frank.thompson.iv at gmail.com>wrote:
> > > Hi Everyone!Based on some searches of past messages, I saw a tip
> > > about using avideoscaler to adapt the 15kHz RGB video signal from
> > > the CoCo3 to astandard VGAmonitor.I purchased the scaler
> > > mentioned in these postings, an Extron DVS304.  Ihave some
> > > unusual behavior that I'm trying to isolate todetermine who isat
> > > fault:  the CoCo, my homemade RGB to DB15 cable,or the Extron
> > > unit.So, to start, it took some fiddling with the knobs of the
> > > Extron toget itto work, but now that it is set up, it is
> > > AMAZING.  The videosignal isjust gorgeously clean and crisp.  (By
> > > the way, if anyonewants to know thefiddling I needed to do to get
> > > it to work, let meknow.  It is not relevantto this present
> > > discussion so omitted).I can boot up CoCo3 specific games in RGB
> > > mode and the video isawesome.I've launched Robocop, Predator,
> > > Rescue on Fractulus, andFlightSim II.However, some older games
> > > (not all) show up in a poorlooking (fuzzy, butlegible) black and
> > > white screen.  Examplesinclude Pitfall II and even myGamepak
> > > based Hunt the Wumpus.I confirmed that the composite video out of
> > > the RCA jack on theback of theCoCo is showing in proper color
> > > (hooking directly fromCoCo to monitor).I'm not sure if the issue
> > > is with the video scaler, the CoCo, orthosegames just aren't
> > > usable with RGB monitors (I'm not sure whythat would bebut I
> > > don't know the hardware).  If it is the fault ofthe scaler,
> > > doesthat imply that there is a difference in thesignals out of
> > > the CoCo RGBport for the different games and thescaler just can't
> > > handle certaindifferences?Again, as a tangent, I can post more of
> > > my details of getting theExtron towork (not much to it really) if
> > > people are interested.Thanks all!--Coco mailing 
> > > listCoco at maltedmedia.com
> > > https://pairlist5.pair.net/mailman/listinfo/coco
> > > 
> 
> --Coco mailing listCoco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>