My understand of the way that it worked in things like DG/Aviions
and some 3B2s was that it signaled that a powerfailure *had* occured, the
processes have be restarted from the last checkpoint, and that any network or
other "ephereral" connections needed to be recreated.
  SIGPWR was *post-ressurection"

   :!mcr!:            |  Cow#1: Are you worried about getting Mad Cow Disease?
   Michael Richardson |  Cow#2: No. I'm a duck.
 Home: mcr@sandelman.ottawa.on.ca. PGP key available.