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

[Steve]

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
>
>