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Why doesn games (scrollers in particular) run smoothly on my computer – even if I have selected the 384×282 screenmode and have a powerful CPU?

April 26, 2017Computer Games particular powerful run Selected smoothly

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Why doesn games (scrollers in particular) run smoothly on my computer – even if I have selected the 384×282 screenmode and have a powerful CPU?

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The reason is that the PAL C64 is making frames with 50.12 Hz (985248/63/312) and the screenmode you are using is probably not exactly 50.12 Hz but rather perhaps 50.00 Hz. That means that after about 8 seconds (1/0.12) it will be produced one more frame than have been showed, and that frame will never be displayed. And because of the missed frame the scroller will make a visible jump. If your displays refresh rate is faster than 50.12 Hz, perhaps 70.00 Hz, this means that several frames will be displayed twice but others are displayed only once.