Been studying RISC-V for... I think a year now. Bought the booklet outlining the ISA's modules, and have been working down from there.

I have seen various startups and actual products, as well as a bunch of simulators, but I haven't really seen any projects trying to design a RISC-V CPU from the ground up.

Are there any groups doing this? I don't think I'm at a point where I could meaningfully contribute, I'm mostly interested for educating myself.