Sorry  for the delay in answering, I've been busy with Work,
and with debugging serial consoles.


Re pm:
 * /dev/pm0 does nothing.  NetBSD/pmax uses a hardware-independent
  pseudo-device to access framebuffer hardware.  Create /dev/fb0 and
 make a symlink from /dev/fb and /dev/mouse to there.

  I rebuilt a new base.tar.gz with a fixed MAKEDEV  yesterday; if you can
 wait about 2 hours, that will be on ftp.netbsd.org and
  ftp.dsg.stanford.edu.

Re procfs:
* I beleive that procfs works; the GDB hooks for NetBSD/pmax use it.
  (ptrace emulation would be neat, but no-one has had time.)

Re SysV IPC:
* I have never tried System V IPC, there  may well be un-initialized
  variable that need to be set up for SYSVIPC.  If you have time, check
  the Pica port for sysV initialization.


Re crashdumps:
* No, they don't work.  All the machinery is in place except in the
 driver. This is waiting for the MI scsi drivers to be dropped in.

--Jonathan