[Coco] S-Video mod for Coco1

[Luis Antoniosi (CoCoDemus)]

Your answer is on IC39. LM1889: It has several chroma inputs. Need to know
if one of them is useful. I bet on pin 13 Chroma Subcarrier.




On Mon, Sep 30, 2013 at 3:09 PM, Ken H. <dragon.atv at gmail.com> wrote:

> Looking at the Tano motherboard I can't see an MC1372
> http://archive.worldofdragon.org/images/4/40/Tano64.png
>
>
>
> On Mon, Sep 30, 2013 at 9:58 PM, Luis Antoniosi (CoCoDemus) <
> retrocanada76 at gmail.com> wrote:
>
> > Is there a chrominance output on it ?
> >
> >
> > On Mon, Sep 30, 2013 at 2:57 PM, Ken H. <dragon.atv at gmail.com> wrote:
> >
> > > This is an amazing video quality for the CoCo1 !
> > > Do you think a similar mod could be done with the Tano Dragon?
> > >
> > >
> > > On Mon, Sep 30, 2013 at 5:59 AM, Luis Antoniosi (CoCoDemus) <
> > > retrocanada76 at gmail.com> wrote:
> > >
> > > > With a very simple driver you can make a perfect a s-video output for
> > > your
> > > > coco1
> > > >
> > > > http://www.youtube.com/watch?v=47r1S8Sjr20
> > > > http://www.youtube.com/watch?v=2AYpUA5H5tg
> > > >
> > > > https://pbs.twimg.com/media/BVYIpfxCEAAy8kO.jpg:large
> > > > https://pbs.twimg.com/media/BVYItw_CQAAQupH.jpg:large
> > > > https://pbs.twimg.com/media/BVYIxdGCcAEMydj.jpg:large
> > > > https://pbs.twimg.com/media/BVYI0ZaCAAAikiF.jpg:large
> > > > https://pbs.twimg.com/media/BVYJEVaCQAAJz1z.jpg:large
> > > > https://pbs.twimg.com/media/BVYJIJQCQAAXWOf.jpg:large
> > > >
> > > > Basicaly s-video signal works with 2 signals: Luminance and
> > chrominance.
> > > > The luminance you can use the same monochrome driver you are used
> to, 2
> > > > transistors tied on Y output from 6847. But the chrominance you get
> > from
> > > > 1347 pin 8. A 300 Ohm resistor is needed to reduce the vertical
> lines.
> > It
> > > > worked with 2 monitors an a s-video / vga converter I have here.
> > > >
> > > > Check the video how to get artifact colors from it.
> > > >
> > > > Didn't test on coco2, dunno if works since the 1372 is connected
> > > different
> > > > there.
> > > >
> > > >
> > > > --
> > > > Long live the CoCo
> > > >
> > > > --
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> > > > Coco at maltedmedia.com
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> > > >
> > >
> > > --
> > > Coco mailing list
> > > Coco at maltedmedia.com
> > > http://five.pairlist.net/mailman/listinfo/coco
> > >
> >
> >
> >
> > --
> > Long live the CoCo
> >
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco
> >
>
> --
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> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>



-- 
Long live the CoCo