Has anyone of you managed to configure NetBSD-1.0 to use the
   Trackpoint II mouse device on an IBM ThinkPad?  Currently I have
   installed NetBSD-1.0 and XFree86-3.1 on my TP360CE, and everything
   seems to work great except for the trackpoint device.  That is, it
   works, but it locks up my console as soon as I read events from
   /dev/pms0.

More accurately, it locks up the keyboard when you close the mouse
device.  This is a known problem on *some* machines.  I don't have a
PS/2-style mouse, so it's a bit hard to track it down myself.

   2. Made pmsprobe() more-or-less a null-routine that returns 1.  The
      reason for this is that I have not been able to probe the
      Trackpoint device successfully with the existing code.  Clues?

That probably isn't necessary.  Try just removing the line:

!       pms_aux_cmd(iobase, PMS_MAGIC_2);

and see if it works.