What Tomâ€™s doing is sort of a modern, cranked-up version of that. here, he cannibalizes an existing Nintendo cartridge and wires in a Raspberry Pi 3 mini-computer that runs a game console emulator. The work includes a lot of manual wiring and some serious programming on Murphyâ€™s part.
Heâ€™s not modding the NES itself at all. The way electronics were regulated by the FCC back then, Murphy notes, is what allows him to do this. These systems had to accept signal interference even if it would make them operate incorrectly, and heâ€™s able to use that to his advantage.
When compared to the way modern consoles work, this is kind of wild to imagine. An Xbox is an Xbox and a PlayStation is a PlayStation. No matter what game you run on the system, itâ€™s still the same system. Putting a cartridge into an NES or SNES essentially meant you were changing the hardware itself. It would be like slotting in a new card for each game you install on your PC because the game requires specialized hardware. Itâ€™s unimaginable today, but it was commonplace back then.
Now, Murphy uses it to rickroll us. The whole video is a little long, but if you have any fondness for Nintendo hardware, itâ€™s worth a watch. And if you dig it, he also put together a 43-minute â€œMaking Ofâ€ video to go with it.
Article source: https://www.technobuffalo.com/2018/06/03/nes-hack-reverse-emulation-snes/