Re: Converting a Commodore 64 from NTSC to PAL

From: silverdr_at_wfmh.org.pl
Date: Fri, 13 Apr 2012 18:05:40 +0200
Message-Id: <CCBE1004-2AFA-44BC-B899-EA5A52A7C9DA@wfmh.org.pl>
On 2012-04-13, at 17:08, Gábor Lénárt wrote:

>>>>> Anyway, frequency of the AC input is not so exact sometimes, so TOD can
>>>>> be quite un-precise. I was thinking some years ago to try to use
>>>>> another input signal for the CIAs which is more stable, so TOD will be
>>>>> more "usable".
>>>> 
>>>> actually the AC frequency has *excellent* long term stability these days
>>>> and is more than sufficient for any real world application on the c64.
>>> 
>>> Nice to know, I had problems with that, but it was something like hmm 20
>>> years ago or so? :)
>> 
>> even then it shouldnt have been a problem, except in some rural areas maybe :) 
>> see http://en.wikipedia.org/wiki/Power_line_frequency#Stability
> 
> Ehhem, maybe Hungary could be called rural then ... :)

As well as Poland and (possibly) other "rural" countries of of the former "East Block" ;-)
I don't think we had this sort of "high-tech" synchronisation mechanisms back then.

-- 
SD!


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