> Does this improve them too or does it have nothing to do with ?
Nothing to do with them, they're on different hardware with unbelievably bad sound and less/different protection.
That said, those versions are being looked at too.
> Dont they all use the same mcu ?
There is no MCU. The COP is a gate array with a bunch of fixed-function math operations, each with separate ports. Quite similar to the Sega X/Y board math helpers or the SNES multiply/divide unit, except on steroids.
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