> it displays the prom b,c,n prompt over and over again.
                     ^^^^^^^^^^^^^^^^^
   
   Did you set "sunmon-compat?" to "false" in the NVRAM like the INSTALL doc sez?
   :-)

actually, i think that now we have sun4 support we don't
need this anymore.

pk ?  can you confirm ?

.mrg.

ps:  if my memory serves, the ... lossage this used to entail
was quite a bit more spectacular than this  :-)