This does not happen on any of my hp300-based boxen, which includes:
	433
	380
	375
	370
	360
	320

However, on all of my machines, I have pmap problems if I have 
MAPPEDCOPY in the kernel config.  Also, all of 
my 32 meg boxen (with the exception of the 433) are quirky...Like they 
just `freeze', and occasionally panic with `out of address space', but it 
always hangs during the dump or before ddb, so that's of no help.

Seriously, though...yank MAPPEDCOPY if you have it...

For my own personal edification (sp?), can someone please enlighten me on 
just exactly what MAPPEDCOPY is supposed to accomplish?  Thanx in 
advance...

On Sat, 24 Sep 1994 15:50:03 -0700 
 Havard Eidnes <Havard.Eidnes@runit.sintef.no> wrote:

 > 
 > >Number:         496
 > >Category:       port-hp300
 > >Synopsis:       hp300 port panics early after reboot
 > >Confidential:   no
 > >Severity:       serious
 > >Priority:       high
 > >Responsible:    gnats-admin (GNATS administrator)
 > >State:          open
 > >Class:          sw-bug
 > >Submitter-Id:   net
 > >Arrival-Date:   Sat Sep 24 15:50:02 1994
 > >Originator:     Havard Eidnes
 > >Organization:
 > "	SINTEF RUNIT"
 > >Release:        NetBSD 1.0_BETA
 > >Environment:
 > System:	NetBSD lirype.runit.sintef.no 1.0_BETA NetBSD 1.0_BETA (LIRYPE) #0: Sat Sep 24 20:39:04 MET DST 1994     he@lirype.runit.sintef.no:/usr/src/sys/arch/hp300/compile/LIRYPE hp300
 > 
 > >Description:
 > 	NetBSD-hp300 on my machine panics right after printing
 > 
 > 		real mem = 33546240
 > 
 > 	with
 > 
 > 		panic: pmap_enter_ptpage: PT page not entered
 > 
 > 	After this it drops into the debugger, but the keyboard appears
 > 	to be frozen so it's kind of hard to do further debugging.
 > 
 > 	The machine needs a hard reset (pressing the "reset" button)
 > 	to come up properly.  This makes it necessary to be physically
 > 	present to reboot the machine.
 > 
 > 	The machine this happens on is identified by the following print-out
 > 	during autoconfig (it is a HP-9000/425):
 > 
 > NetBSD 1.0_BETA (LIRYPE) #0: Sat Sep 24 20:39:04 MET DST 1994
 >     he@lirype.runit.sintef.no:/usr/src/sys/arch/hp300/compile/LIRYPE
 > HP9000/380/425 (25MHz MC68040 CPU+MMU+FPU, 4k on-chip physical I/D caches)
 > real mem = 33546240
 > avail mem = 27361280
 > using 819 buffers containing 3354624 bytes of memory
 > Parity detection enabled
 > hil1: US ASCII keyboard
 > dma: 98620C with 2 channels, 32 bit DMA
 > hpib0 at sc7, ipl 3
 > ct0: 9144 streaming tape
 > ct0 at hpib0, slave 3
 > dca0 at sc9, ipl 5, flags 0x1
 > unconfigured card id 6 at sc12
 > scsi0: 32 bit dma, async, scsi id 7
 > scsi0 at sc14, ipl 4
 > st: wrong specs: type 0 qual 0 version 1
 > sd0: HP C2235-300 rev 0B16 (SCSI-2), 825012 512 byte blocks
 > sd0 at scsi0, slave 6
 > le0: hardware address 08:00:09:15:1e:48
 > le0 at sc21, ipl 5
 > grf0: 1280 x 1024 256 color hi-res catseye display
 > grf0 at sc133
 > 
 > >How-To-Repeat:
 > 	Do a "reboot" and watch it happen.
 > >Fix:
 > 	This is a problem out of my league, sorry...
 > >Audit-Trail:
 > >Unformatted:
 > 

--------------------------------------------------------------------------
Jason R. Thorpe               thorpej@cs.orst.edu                 758-2003
Systems Administrator            CSWest Room 12                   737-2229
CS Dept, Oregon State University           http://www.cs.orst.edu/~thorpej
               "I brought my BOWLING BALL -- and some DRUGS!"
                      -- ztp