Thus, Hitachi synthesised a second revision with a larger multiplier unit and other requirements on Sega’s checklist, leading to a new CPU called SH-2.Įven so, Sega couldn’t stand still after hearing what choice of CPU its competitors went for. Hitachi’s new creation implemented modern arts such as a RISC instruction set and a pipelined data-path, however, Sega wasn’t satisfied by the final product, especially due to the small 16-bit multiplier. In the end, the company chose a fresh CPU whose creator was desperately looking for an adopter, the Hitachi SuperH or ‘SH’. Just like its close competitors drowned with options during the RISC fever, Sega had to go through all the conundrums of choosing a vendor that could bring up the next generation of games (including those with ‘3D’ capabilities). Hopefully, the result didn’t get out of hand! Just in case developers want the extra dimension, Sega adapted some bits of the hardware to enable polygon drawing as well.
Sega enjoyed quite a success with the Megadrive so there’s no reason to force developers to write 3D games right now.
Remaining RAM chips are fitted on the back Motherboard with important parts labelled Diagram Main architecture diagram Showing 'VA8' revision which includes all components in a single board
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