[smprather]

Has Nintendo released officially, or leaked, the RTL for any of the processors in the SNES? If someone could get their hands on that, then the emulation authors should be able to achieve perfection.

[smprather]

Looks like some people are trying to re-create it at least. https://github.com/srg320/FpgaSnes

[NobodyNada]

AFAIK chips from this era were designed and layed out by hand, rather than with an HDL.