Wilf's NOVA2005 for 50 Hz Zeddies?

Any discussions related to the creation of new hardware or software for the ZX80 or ZX81
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Paul
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Re: Wilf's NOVA2005 for 50 Hz Zeddies?

Post by Paul »

I thought there was an IO bit somewhere showing the machine should run on 50 or 60 Hz.
In theory, there is no difference between theory and practice. But, in practice, there is.
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PokeMon
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Re: Wilf's NOVA2005 for 50 Hz Zeddies?

Post by PokeMon »

Yes - this is read from keyboard routine and stored to MARGIN.
So the fastest way is to read MARGIN and add/subtract to get the desired value(s).
And this way assures same timing regardless if PAL or NTSC. ;)
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