[Coco] For those of you following the RGB2VGA FPGA

[Luis Antoniosi (CoCoDemus)]

only if you put in digital mode. Analog mode you will never have the pixel
perfect screen.


Luis Felipe Antoniosi



On Mon, Sep 29, 2014 at 9:51 AM, S Klammer <sklammer at gmail.com> wrote:

> Looking forward to your further progress.  Is it possible for a mode to
> emulate the NTSC composite artifacting, for example, in PMODE 4?
>
> Shain
> On Sep 29, 2014 7:52 AM, "Luis Antoniosi (CoCoDemus)" <
> retrocanada76 at gmail.com> wrote:
>
> > I started to test with my MSX2+, is working but I'm getting RGB voltage
> > issues. Seems they are higher on this machine and I get full white only.
> >
> > Luis Felipe Antoniosi
> >
> >
> >
> > On Mon, Sep 29, 2014 at 4:03 AM, Nick Marentes <nickma2 at optusnet.com.au>
> > wrote:
> >
> > > The quality of your card is very good. Very sharp and clean. It's
> > > obviously been tailored to suit the CoCo3 video.
> > >
> > > It's color spectrum is it's biggest problem.
> > >
> > > I think that for most OS-9 users though, it's ability to represent the
> 8
> > > digital colors very well will be enough. Just don't plan on running
> many
> > of
> > > the games such as Koronis Rift, Thexder and the Sierra adventures...
> > > although the Sierra adventures are mainly 8 digital colors with 2
> levels
> > of
> > > brightness so they may be ok (EGA 16 colors).
> > >
> > > I have an Amiga and have a flicker fixer installed. I tried connecting
> an
> > > LCD monitor to it and although it works fine, the quality of upscaling
> > from
> > > a non native resolution to the LCD panel resolution is downright ugly.
> > >
> > > In the end, I found a very cheap (free!) LG CRT 15" monitor with high
> > > quality built in stereo speakers and the image (and sound) quality is
> > > brilliant! The Amiga works best on VGA LCD if you have a proper video
> > card
> > > that can deliver native LCD resolution.
> > >
> > > And likewise on the CoCo3, I'll stick to CRT here too. I have a Tandy
> > CM-8
> > > (which is a pretty low grade RGB monitor) but connecting it to a Amiga
> > 1084
> > > yields better results. I'm happy with my original CM-8 though.
> > >
> > > A CoCo 1/2 to VGA converter would be good. It only has the 8 colors so
> > > your VGA adapter would be good.
> > > I assume that a VGA adaptor for this will require tapping to the
> > internals
> > > to derive the necessary luma and chroma signals.
> > >
> > > Nick
> > >
> > >
> > > On 29/09/2014 4:17 PM, Luis Antoniosi (CoCoDemus) wrote:
> > >
> > >> You can buy one for 80 dollars.
> > >>
> > >> But I'm not aiming any production batch or commercial product. What I
> > >> wanted to do is to master the technology and not be slave of any other
> > >> device. Also I want to make a VGA converter for the coco2.
> > >>
> > >> It will be hard to get the full coco3 color spectrum but I would be
> very
> > >> happy If I could remove most of the noise. What I know now from where
> is
> > >> it
> > >> coming.
> > >>
> > >>
> > >> Luis Felipe Antoniosi
> > >>
> > >>
> > >
> > > --
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> > > Coco at maltedmedia.com
> > > https://pairlist5.pair.net/mailman/listinfo/coco
> > >
> >
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> >
>
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