Does this still occur if you powerdown and then try again?
This is a known problem with the warm reboot.  See PR 7174 at
http://www.NetBSD.org/cgi-bin/query-pr-single.pl?number=7174

If this occurs on your system when trying to boot immediately after a
power on, please let me know (or submit a followup to the above
mentioned PR) and I will move it up on my priority list.

Thanks,
Darrin

Robert King <teletype@prism.ne.mediaone.net> writes:

> I'm trying to install on a mono slab, and here's the results I'm getting. 
> bootp, tftp, and nfs worked like a charm, the kernel loaded, and then
> promptly pooched.
> 
> NeXT/MC68040 CPU+MMU+FPU, 4k on-chip physical I/D caches
> real mem = 8380416
> panic: pmap_enter_ptpage: PT page not entered
> Stopped in  at  _Debugger+0x6:  unlk   a6
> 
> and a trace shows the following: 
> 
> _Debugger(2704,2,4179000,0,156ecc) +6
> _panic(c5dc9,1000,0,fffffffe,1) + 52
> _pmap_enter_ptpage(fe870,1400000) + 50c
> _pmap_enter(fe870,1400000,4294000,3,1) + b8
> _cpu_startup(143a0,e3dfc,4001000,0,5) + 16e
> _main(1,1,0,156ff4,1000) + 38
> 
> I'm assuming this is a common problem, but only because I have a very
> straightforward setup here.
> 
> If anyone could point me in the right direction, it'd be much appreciated.
> 
> Thanks!
> 
> Rob King