[Coco] is there any existing 6847 output to RGB ? (for coco2)

[Zippster]

Link?

- Ed


> On Feb 19, 2015, at 2:32 PM, didier derny <didier at aida.org> wrote:
> 
> I found the schematics, of the matra alice. Almost a clone of the mc10 except for the video
> Where the modulator is effectively replaced by a "forest" of transistors
> 
> -  13  transistors...
> -  1   buffer or inverter 
> -  1   unlabeled chip combining  clk + HS  + FS + another unknown signal (I guess to produce the synchro)
> 
> 
> 
> -----Message d'origine-----
> De : Coco [mailto:coco-bounces at maltedmedia.com] De la part de Luis Antoniosi (CoCoDemus)
> Envoyé : jeudi 19 février 2015 21:16
> À : CoCoList for Color Computer Enthusiasts
> Objet : Re: [Coco] is there any existing 6847 output to RGB ? (for coco2)
> 
> Well I do have a coco2 peritel with a RGB output for SCART TVs. It does everything on transistors, actually a transistor plantation...
> 
> I think it does a YCbCr -> RGB conversion. The VDG outputs YCbCr.
> 
> 
> Luis Felipe Antoniosi
> 
> 
> 
> On Thu, Feb 19, 2015 at 3:04 PM, didier derny <didier at aida.org> wrote:
> 
>> Is there any existing 6847 output to  rgb board / schematics
>> 
>> 
>> 
>> I've just seen the pinout of a RGB video connector
>> 
>> But the video in the machine is done by a 6847
>> 
>> 
>> 
>> The schematics are hard to read  and there are a lot of transistors
>> 
>> Between the video signal on the 6847 and the connector.
>> 
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