Re: 906114-4 and 5

From: Marko Mäkelä (
Date: 2008-12-02 08:02:17

On Mon, Dec 01, 2008 at 04:36:21PM -0500, wrote:
> Sorry!
> NTSC is 6567
> PAL is 6569
> Am I correct that you can make an NTSC machine into PAL (or vice versa) by
> swapping the VIC and the clock crystal?

You will also have to switch the clock divider.  The bus clock is
14.318181 MHz / 14 on NTSC and 17.734472 MHz / 18 on PAL.  Old
monitors often do not handle both NTSC and PAL color modulation.
That is, you will likely see a grayscale picture, unless you have
an RGB converter that handles PAL.


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