Please help me get a better understanding: what exactly is a softc,
and how exactly is it supposed to be allocated, filled in, and used?

Is it supposed to be some place where all the state for a particular
instance of a device resides, or something like that?  What is the
ultimate prototype for all softc's?  Is there such a thing?

-----------------------------------------------------------------------------
  Michael L. VanLoon                                 michaelv@HeadCandy.com
        --<  Free your mind and your machine -- NetBSD free un*x  >--
    NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3,
        Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32...
    NetBSD ports in progress: PICA, others...

   Roll your own Internet access -- Seattle People's Internet cooperative.
                  If you're in the Seattle area, ask me how.
-----------------------------------------------------------------------------