> 
> > P.S. Can one boot a 1.0 system under DDB?  If so, what is required to do so?
> >      (ddb(4) isn't terribly forthcoming on the subject)

Yes, you can. In fact, I just repaired locore.s, so kernel symbols are 
available again to the ddb routines.

You'll need the NetBSD bootblocks (in <sys/arch/sparc/stand>) to load the
symbols and to pass their location to the kernel. There's a small element
of risk involved in installing the bootblocks, though, if you don't have
alternate devices to boot your system.

-pk