In 1997, two young hobbyists released two pieces of software that more or less prompted a new wave of interest in “retro” games—which were, at that point, really just a few years old. The first punch was Nesticle, a Nintendo Entertainment System emulator that quite suddenly made it free and easy to play Nintendo’s '80s and early '90s games on a PC. The second punch, delivered near the end of the year, was ZSNES, which did the same for much newer Super Nintendo games. And it was fast—even on the modest PCs of the era.
Well, people who create emulators have really deep knowledge of not one, but two systems. The one they’re emulating and the one emulating it.
They are Chris Sawyer type “I do everything in ASM” level programmers. I can do some low level shit in Zig and C too, but these people scare me.