Re: Difference in luma-chroma delay of C64/C128 compared to standard S-video

From: Gerrit Heitsch <>
Date: Mon, 4 Sep 2017 22:02:45 +0200
Message-ID: <>
On 09/04/2017 09:29 PM, wrote:
>> On 2017-09-04, at 19:19, Gerrit Heitsch <> wrote:
>>> Did anyone try to run a C64 with an independently clocked dot clock?
> I just did. I put an 8MHz clock directly on 6569R5 VIC's pin 22.
>>> How did it look like?
> Heavy colour bleeding and some dot crawl on some colour changes aside - perfect. So I tuned the clock to be 7.88MHz and it seemed fully perfect. Subjectively better than with original clock, although I'd have to connect it to spec analyser and a truly hi-res display to be convinced about that.

To see dot crawl better, you need to use FBAS/CVBS instead of Y/C.


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Received on 2017-09-04 21:00:02

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