M L Riechers Mlr mlr@sun.rse.com said;

> The mpc860 is PowerPC core based, minus the floating point
> unit and seg registers, but has an mmu structure somewhat like the
> 68030 or 68040.
> ...
>  Hence the 68360 is not a likely candidate for a
> NetBSD port, but the mpc860 is.

NetBSD runs on mpc860 in fact.   Some independent efforts have
already realized.   The "MMU architecture" is quite different from most
of POWER descendant.   There is no MMU circuit indeed, but DTLB
and ITLB in pair.   Exception handler is responsible to TLB refilling.
Thus it's more or less MIPS-like.   It's PPC-compatible only in
terms of user mode programs.

Toru Nishimura/ALKYL Technology