Idea: Add lots of tiny CPUs, say Cortex-M0, to FPGA fabric as hard IP. Quick estimate says 2x M0 are ~= size of one RAMB18 on same process
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@cr1901@azonenberg But then, most of the PicoRV32 gates are related to the register file and the 6502 had no register file.
@cr1901 @azonenberg 6502 used the zero page as quasi register file. So you'd had to add the transistors for the zero page in mem as well..