Trying to boot on D350

Hello, 
Here is my experience with NetBSD 3.88.20, GENERIC kernel with DEBUG and DIAGNOSTICS options enabled

The machine is D350 2 x 7200 CPUs, 1.5 GB RAM
The machine boots and works nicely under HP-UX 11.11

The netbooting of NetBSD kernels gives the following output on the serial console

Booting... 
Network Station Address 080009-af2b6e
Boot IO Dependent Code (IODC) revision 2
HARD Booted.
>> NetBSD/hp700 LIF/FFS/LFS Boot, Revision 1.3
>> (n4@small, Sun Jun 24 23:04:08 CEST 2007)
>> Enter "reset" to reset system.
Boot: [[[lf0a:]netbsd][-a][-c][-d][-s][-v][-q]] :- boot netbsd -v
10240088+110592+471040 [311888+277865]=0xb1e388
Start @ 0x200000 [1=0xc8e000-0xd1e388]...
PDC_CACHE_SETCS: 0, 0, 0, 0 (-2)
SPID bits: 0x0, error = -2
btlb info: minsz=128, maxsz=16384
btlb fixed: i=0, d=0, c=16
btlb varbl: i=0, d=0, c=0
pdc_hwtlb.min_size 0x1000
pdc_hwtlb.max_size 0x80000000
HP9000/831/D200-2/D400-2 (UltraLight Proc 2-way T'100), PA7200
  [ BTLB slot 0: r-x--- 0x00200000 @ 0x0:0x00200000 len 0x00200000 ]
  [ BTLB slot 1: r-x--- 0x00400000 @ 0x0:0x00400000 len 0x00400000 ]
  [ BTLB slot 2: r-x--- 0x00800000 @ 0x0:0x00800000 len 0x00400000 ]
  [ BTLB slot 3: rw---- 0x00c00000 @ 0x0:0x00c00000 len 0x00400000 ]
  [ BTLB slot 4: rw---- 0x01000000 @ 0x0:0x01000000 len 0x01000000 ]
  [ BTLB slot 5: rw---- 0x02000000 @ 0x0:0x02000000 len 0x02000000 ]
  [ BTLB slot 6: rw---- 0x04000000 @ 0x0:0x04000000 len 0x02000000 ]
  [ BTLB slot 7: rw---- 0x06000000 @ 0x0:0x06000000 len 0x00800000 ]

[ ... Lots of pdc_kenter stuff deleted ...]

pdc_coproc: 0xc0, 0xc0
Loaded initial symtab at 0xc8e000, strtab at 0xcda61c, # entries 19474


It seems that after leaving hppa_init (/hp700/hp700/machdep.c) processing goes back to locore.S and goes nowhere or idles helplessly

Moreover I'm not sure if this is ok for PDC_CACHE calls to fail

BTW OpenBSD 4.1 fails to boot on this machine generating similar messages 

Your comments are welcome
--
Wojciech Galazka