[Coco] S-Video mod for Coco1

[Ken H.]

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
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>