Re: Open hardware AV to digital conversion

From: Michał Pleban <>
Date: Fri, 09 Jan 2015 17:17:15 +0100
Message-ID: <>
Hello! wrote:

> That's the problem. The first stage I want to do is to keep the 64 being
> a 64, meaning it can still be connected to whatever it was before,
> /plus/ those to which it couldn't over the same pins/cables. This means
> the thing has to go inside. Preferably as a "riser" for VIC and give at
> the same output lines a proper composite/s-video signal.

As I have been conteplating such device for some time and did some very
basic research, I tell you this: there is no much reason to get it
inside as a riser for the VIC (which was what I originally wanted to do).

The reason is that, with the newer C64's at least, you have exactly the
same signals on the video port (separated luma / chroma) as on the VIC.
There are no more signals you can extract from the VIC to make it easier
to decode video, except perhaps for the video clocks (but you can
possibly reproduce them with your own crystals).

The only problem may be with older C64 or VIC-II where you have only
composite signal on the video port.


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Received on 2015-01-09 17:00:54

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