[Coco] For those of you following the RGB2VGA FPGA

[Luis Antoniosi (CoCoDemus)]

Um using the Nano. It's small and fits anywhere. VGA output you can make
your own using few resistors and vga connector.

Can't tell about the coco3. In theory it could run on Nano too.


Luis Felipe Antoniosi



On Mon, Sep 29, 2014 at 10:18 AM, Gustavo Ranaur Schoenaker <
ranaur at ranaur.net> wrote:

> Are you using an DE-0 Nano, right? Or it's a regular DE-0 board?
>
> Thinking about buying one next time I'll go to USA (november)  ...
>
> Changing the subject, I'm thinking to buy an DE-1 aswell to try CoCo FPGA.
> Is it worth buying the DE-1 SoC  or only the DE-1 works?
>
> Thanks,
>
> On Mon, Sep 29, 2014 at 10:56 AM, Luis Antoniosi (CoCoDemus) <
> retrocanada76 at gmail.com> wrote:
>
> > 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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