[Coco] CoCo SDC board arrived and RGB to VGA converters

[Retro Canada]

steve, sony pvm broadcast monitors work pretty well and you can find them really cheap. i had my sync pulse inverted on my coco3 but i think it accepts the coco sync but it needs to be composite sync or sync on green. also the image is pretty damn good.

also i got the samsung lcd tv using scart connectors that has an acceptable image ( better than the gbs 8200).

On Feb 7, 2014, at 2:39 AM, Steve <6809er at srbsoftware.com> wrote:

I think I just may order this converter.  If I can't get it working on a CoCo 3, I have a Defenders Arcade game that I could use it on.  Need to replace the monitor and power supply on it.

Defenders is one of the few games that having the real controls of the arcade cabinet just makes more fun to play.

Steve

> On 2/6/2014 11:16 PM, Richard Goedeken wrote:
> I have one of those GBS-8220 units, and I even designed a piece of video
> hardware ("C128 Video DAC", I sold about 30 of them) to generate a signal from
> the C128's high resolution output which this board can convert to a VGA signal.
> 
> I have about 3 or 4 different NTSC-frequency to VGA converters, and the video
> quality from this one is on the upper end.  It's pretty good, and for the
> price they're asking this board is a great deal.
> 
> I've thought about connecting the Coco 3 RGB output to this board but haven't
> gotten around to doing it yet.  I think there are some level problems (this
> board expects 1 volt range but Coco output may be higher), and it may be
> necessary to tweak the sync line polarities.  But it's at least theoretically
> possible to use this to convert to VGA, because this board is designed to work
> with the vert/horz frequencies output by the coco.
> 
> Richard


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