In 1988 the first Apple Mac emulator, A-Max, was released as an external device for any Amiga. The user needed to own the real Macintosh or Mac ROMs to legally run the emulator.
It required an Apple Macintosh ROM image, or actual ROMs in the case of A-Max, which needed to be obtained from a real Macintosh. Both allowed the Amiga to emulate an Apple Macintosh and run the Macintosh Operating System. Also introduced for the Amiga were two products, A-Max (both internal and external models) and the Emplant expansion card.