Perfectly legal, at least in the US.lunncal said:Emulation is where you make one machine act like another in order to run software not originally designed for it. So, for example, if I make my computer run NES games that's emulation. Piracy is a possible method for obtaining those NES games, and it's generally the one used since it's damn difficult to get a computer to read a NES cartridge.
It's probably illegal, but I don't see anything wrong with it in a moral sense, it certainly doesn't harm anyone. Then again, the same could be argued for any kind of piracy, so... yeah. In order to emulate games people do usually pirate those games, but I don't think you should really care.
Not that that little fact stops Nintendo from doing everything in their power to crush the emulation scene, as in their eyes, emulation is piracy. American courts don't seem to agree, but many foreign courts, including some European ones, very much take Nintendo's side.