After Meltdown and Spectre, giant 6502 processors don't seem so silly now, do they?
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How about a giant RISC-V implementation? Curious how complicated a PICORV32 out of transistors would be. :D CC
@oe1cxw On serious note this is another proof that openness, peer review and formal verification of the silicon that runs our lives is important
To address your curiosity: I just naively mapped a small PicoRV32 config to NOT (2T), NAND (4T), NOR (4T), and DFF (12T) with Yosys. Looks like it would be approximately 77000 transistors with CMOS gates.
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That would be 40.5 hours just placing the discrete transistors on my PNP. Sounds like fun. Alternative would be going one up and using nand gates or so :) I know it is not the same…
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To give you some reference ARM6 was in the low 20k transistor range, ARM 7 the high 20k transistor range if I recall correctly. Can't recall the 68k transistor count now. Full custom design flow of course, not standard cell.
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