[Coco] cga to vga converter

[Retro Canada]

the ghost is not interference but the way the board works. any faster moving    object will produce it like typing characters too fast. i ditched my board in my storage box but seems related to the way it reconstruct the image internally.

any nor gate will work i plugged the synced signal on pin 10 on the coco rgb output. but first you need to disconnect this pin by pulling on side of resistors 61 and 62 iirc.

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On 2013-03-03, at 9:51 AM, Frank Swygert <farna at amc-mag.com> wrote:

> Could someone post a simple sync combiner circuit that should work with the GBS 8200 board? A couple people are using them now, so someone should be able to test it. I'm wanting it mainly for an update to Tandy's Little Wonder, which I hope to work on soon. I'll be posting info on Roy's and Chris's converters, but will put the GBS-8200 info in as well.  As I posted earlier, a shielded case should alleviate the interference problems, and that might solve the ghosting on action games as well -- that could be interference related. If someone has a better idea, maybe some kind of signal filter, to at least reduce that problem I'd certainly like to hear that also.
> 
> I'll have to rescan some images for TLW, and I may need some assistance there as I don't have most of the original images. They were pulled from various Internet sources and did not convert to PDF very well. For a good print edition I need higher resolution pics before the PDF conversion.
> 
> -- 
> Frank Swygert
> Editor - American Motors Cars Magazine
> www.amc-mag.com
> 
> 
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