Through reading lots of magazines of the time, the original biohazard 2 was in development for Nintendo 64 but it turned out that it had the right memory, but not the right game texture needed to develop the software. Versions were tested, but they scraped it and used the 1MB or 4MB extension ram cartridge; because they where rumours that the playstation could not handle the complete game. They talked about developing an extension port but never materialized except for Sega Saturn. These are based on !!RUMOURS!!