It sounds like that'd fall under the same legal kerfuffle that is the use of emulators.
If you've got a legit copy of the game brought, then AFAIK it's perfectly legal to use an emulator with that particular ROM. Do it for a game you don't have? It be piracy. Very sketchy law, lol.
If you've got a legit copy of the game brought, then AFAIK it's perfectly legal to use an emulator with that particular ROM. Do it for a game you don't have? It be piracy. Very sketchy law, lol.