Wow, that sounds like it might explain why my timing is always off playing SNES games on emulators. I grew up playing the PAL versions.
I always put it down to lag on modern TVs. Be
It depends on the system and the emulator. The file format most commonly used for NES ROMs does not include region information, so most NES emulators require the user to manually select NTSC or PAL timing to match their ROMs. I think SNES emulators should automatically use the correct framerate though, as the SNES ROM header does include a region field.
The NES/SNES minis always use the NTSC versions of the game, regardless of region.