[9fans] RISC-V (was: Plan9 on radpberry pi zero ?)

[Richard Miller]

> Do you mean something like BlackIce II (I'm under RV32I)?

Yes, I have tried various soft cores on BlackIce (including
one of my own design, for fun); also real silicon HiFive-1.
So far none of these has had an MMU, which is required for
Plan 9 (though not for Inferno).