Gianmario.Scotti_at_nokia.com
Date: 2004-01-19 10:20:46
> -----Original Message-----
> From: owner-cbm-hackers@cling.gu.se
> [mailto:owner-cbm-hackers@cling.gu.se]On Behalf Of ext Marko Mäkelä
> Sent: 19 January, 2004 09:47
> To: cbm-hackers@cling.gu.se
> Subject: Re: My own PS problems..
>
>
> On Mon, Jan 19, 2004 at 01:08:21AM +0200,
> Gianmario.Scotti@nokia.com wrote:
> > In Europe, however, it's 50Hz, and it's this signal that,
> if I understand
> > correctly, is used to generate some video timings in some
> (all?) commodores.
>
> Mario, your other explanations make sense, but this one is
> not true. The
> video timing is tied together with the bus clock frequency.
> On the Commodore
> 64 and 128, the 50 Hz or 60 Hz signal is fed to the CIA Time
> of Day clock
> input. That clock is not used by the KERNAL, but some applications
> (most notably GEOS) use them as a real time clock.
Hey, I wasn't sure one way or the other, I tried to express this feeling
of insecurity somehow :o)
Well, I'm glad it turns out to be this way, 'cause then it's no big
problem to feed 60 Hz to te C-64, right?
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