Path: utzoo!utgpu!jarvis.csri.toronto.edu!eecg.toronto.edu!leblanc
Newsgroups: comp.sys.cbm
From: leblanc@eecg.toronto.edu (Marcel LeBlanc)
Subject: PAL/NTSC clock speeds needed!
Message-ID: <1990Feb15.195025.6915@jarvis.csri.toronto.edu>
Summary: need EXACT speeds
Organization: EECG, University of Toronto
Date: 16 Feb 90 00:50:25 GMT
Lines: 22

[]

Does anybody out there know EXACTLY what the PAL/NTSC clock speeds are for
the C64 and 1541?  I'm using the following numbers as reasonable guesses:

		Commodore 64		 1541

NTSC		1 022 725 Hz		1 000 000 Hz
PAL		  987 000 Hz		1 000 000 Hz

I'm reasonably sure about the NTSC numbers, but what about the PAL numbers?
This is very important when you are trying to maintain synchronization in
fast transfer routines over a period of 60-120 cycles!

If you know you have accurate numbers, please send me mail!

Thanks,

Marcel A. LeBlanc	   | University of Toronto -- Toronto, Canada
"leblanc@eecg.toronto.edu" | and: LMS Technologies Ltd, Fredericton, NB, Canada
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