A very old game speedrun -- of the era that speedruns weren't really a "thing" like they are today -- apparently greatly benefited from a hardware bit flip, and it was only recently discovered.
The Tick Tock Clock upwarp in Super Mario 64. All evidence that exists of it happening is a video recording. The most similar recording was generated by flipping a single bit in Mario's Y position, compared to other possibilities that were tested, such as warping Mario up to the closest ceiling directly above him.
The Tick Tock Clock upwarp in Super Mario 64. All evidence that exists of it happening is a video recording. The most similar recording was generated by flipping a single bit in Mario's Y position, compared to other possibilities that were tested, such as warping Mario up to the closest ceiling directly above him.