<sorry about the lateness of this reply--I got lost when port-sparc was 
truncated>


>   CHANGES says NetBSD-current has supported sun4m machines.
> I have in my office a PFU S-4_20H, which is a SPARCStation 20
> compatible box with ROSS RT625 HyperSPARC processor, and want to
> run NetBSD on it.  Does anyone have tried on this model?
> My concern is that according to the Solaris 2.5's /platform
> directory the kernel for S-4_20H is different from the ordinary
> sun4m (/platform/PFU,S-4_20H is a symbolic link to sun4mL directory),
> and that in the current cpu.c I cannot find the string `RT625'.

HyperSPARC support is, in general, missing/untested in NetBSD-current. I know 
of several cache-type bugs that need to be fixed before it will work.

--Aaron