Posted By
siz
on 2021-02-01
03:30:55
|  Re: Atari people asked about the Plus4 and I gave him a lecture :)
You switch TED to NTSC clock divisor on a PAL system. It will generate a higher clock because the pixel clock is higher (~17MHz PAL, ~14MHz NTSC) and divisor is less (perhaps 16 for PAL and 14 for NTSC, I'm not sure and too lazy to check it) the resulting clock will be higher (of course turning screen off is required to avoid single clock during screen drawing).
I'm pretty sure some of the crunchers used this mode back in the late 80s, early 90s (maybe Cruel Crunch?).
Nowadays I hate this things as there is no real benefit to use anything that CPU intensive on a plus/4 while you can do it on a PC much faster. And my display hates non-standard display timings so every time one of these occurs I have to reset my RetroTink2X and monitor. So please, don't. 
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