Re: VGA and VIC chips

From: Michał Pleban <>
Date: Fri, 13 Sep 2013 16:19:18 +0200
Message-ID: <>

Justin wrote:

> I use an older 15" Panasonic LCD that has S-video in and it does reasonably well, but a lot of newer small displays are doing without the analog inputs. I have two 23" and 24" LCD displays now that only accept HDMI and DVI. Eventually a good solution for HDMI is going to be necessary. I say this all the time but a solution that can accept composite, split composite, and RGB-I with auto-switching would be great for a lot of different vintage hardware. Actually, something that handles the old RF modulator systems too would be golden, I have some early 70's pong consoles that require a lot of kludging to make work on a modern display.

Some time ago I had an idea of creating some hardware using the
Raspberry Pi and a fast A/D converter. The idea was that from digitizing
the S-video signal we could decode the colors, and hopefully the ARM
processor in the Pi would be fast enough to do it, then display on its
HDMI port. I saw it being done on a PC many years ago, then it required
lots of CPU processing time but I wonder what would be needed to do it
in real-time?

It would help when we knew what computer is attached, because this
limits the possible colors and decoding would be easier. So there could
be a separate decoder for C64 (only 16 colors, there are several VIC
variations which display them differently but not many), for Plus/4 etc.


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Received on 2013-09-13 15:01:02

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