In other words, all you need to be able to draw is a 50/60Hz update cycle but the logic (which is entirely CPU bound) gets done faster. If they genuinely frame skip internally (and thus only draw at 60Hz) as you say then an Amiga port should be easier as there are much faster CPU's available for the Amiga than those arcade machines used. So if you want Turbo you have to be able to run the game logic faster than 60Hz, which isn't too bad with a fast CPU that only needs to poke a few sprite registers, but on the Amiga. The issue with SF2 Turbo and other speed-up hacks is that they actually frame-skip internally.įor example they might render 4 out of 5 frames, with the 5th being done internally for movement and animations but not drawn on screen.
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