A question: when trying to play SNES games, it requires an .sfc file. This is for japanese games for the SNES.
Is is possible to make it run .smc files ? those are american versions, much easier to find, with english text by default.
“SMC” comes from Super MagiCom, a floppy-based cart copying device for backup/piracy. The original .smc files produced by the device contained a 512 byte header. Since it’s pretty easy to detect and ignore most emulators do. If not, it’s easily removed.
Because .smc is in reference to effectively a piracy device, the new preferred file extension is .sfc and has been for a while now.
(In case it is not obvious, the file format is nominally just a raw dump of the ROM on the cartridge with no added headers.)
(Note 2: if you are looking for a way to run homebrew/patches/etc on a real SNES/SFC nowadays, sd2snes is probably the absolute best option.)