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Old Software Was Fast Because It Had No Choice
(yusufaytas.com)
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this post was submitted on 20 Jun 2026
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Programming
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A little while ago in a retrogaming community, someone asked why Atari 2600 games always ran at 60fps when even NES games sometimes had slowdown. It was explained that the video system in the 2600 isn't independent of the main CPU as it is in other consoles, so if the game program doesn't keep updating the display with correct timing, it gets scrambled.
Truly no choice!