Yeah, I'm going to do this with mine as well, I have been putting it off because I have been OC'ing my computer since I got this new hardware, but this is a neat project for the overclocking enthusiast.
I knew about this (I do overclock calculators, this isn't anything new...) The only problem is that the sound gets out of sync with the video because they are both controlled by different chips on the board....just so you know.
Hey, I'm the author of the overclocking guide. The sound does NOT get out of sync, the pitch just rises slightly. They're controlled by the SAME chip-- the 6502 processor and audio hardware are integrated in one IC called the RP2A03.
Here it is in emulator form, a 4x overclocked NES to try out (before you do the same to your hardware?). The sound is ridiculously high-pitched, so limit to 11khz to save your ears, or turn it off. Runs as smooth as glass.
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