At the suggestion from Miller that his American team would be able to design the system, the 32X was designed as a peripheral for the existing Genesis, expanding its power with two 32-bit SuperH-2 processors, the same as those that would be used in the Saturn but with a lower clock speed. The SH-2 had been developed in 1993 as a joint venture between Sega and Japanese electronics company Hitachi. The original design for the 32X add-on, according to Bayless, was created on a cocktail napkin, but Miller denied this. In another account, Bayless claimed that Franz began designing the 32X on a hotel notepad, drawing two SH-2 processors with separate framebuffers.