> We're doing a netboot install -- did everything per the docs, and
> got a panic similar to (we don't have a serial console, so this is
> from memory):
> 	panic: pmap_bootstrap: no memory?!

Can you go to the memory node in PROM monitor and dump its contents?
I.e.:
	ok cd /
	ok cd memory
	ok .attributes	( or .properties if that doesn't work)

-pk