I'm actually gearing up for a RISC-V processor in Fallout 4. All of the design work is done, but building it with the vanilla logic gates (introduced in the Contraptions DLC) actually isn't possible. Luckily I already had a mod with "real" components when Contraptions was announced.
Assuming you weren't joking, how sophisticated is your design? (as in, "is it pipelined?")