To change an Amiga properly between PAL & NTSC there are two parts to change,
the colorburst crystal, and the master oscillator, as well as setting the jumper to tell Agnus.
It’s the cloudburst crystal that could be ignored if it’s only RGB video that is needed.
The master oscillator is probably more made for analogue video devices than Amiga specifically,
since these frequencies are chosen because they are multiples of the video frequency the computer works with.
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