I wanted to install NetBSD 1.5 on my Digital Alphastation 255 via BOOTP.
The BOOTP/TFTP thing works fine but I get a kernel trap during bootup.
Same thing worked without problems with NetBSD 1.4.1.

Any advice for this Problem would be greatly appreciated.

Andi M.

PS:

Here ist the full listing of the boot messages: 

>>>boot ewa0
 (boot ewa0.0.0.14.0 -flags a)

   Trying BOOTP boot.

   Broadcasting BOOTP Request...
   Received BOOTP Packet File Name is: /boot.netbsd.alpha
   local inet address: 10.20.10.5
   remote inet address: 10.20.10.1
   TFTP Read File Name: /boot.netbsd.alpha
   netmask = 255.0.0.0
   Server is on same subnet as client.
   .
   bootstrap code read in
   base = 1f2000, image_start = 0, image_bytes = efb0
   initializing HWRPB at 2000
   initializing page table at 1e4000
   initializing machine state
   setting affinity to the primary CPU
   jumping to bootstrap code

   NetBSD/alpha 1.5 Network Bootstrap, Revision 1.7
   (root@frau-farbissina.shagadelic.org, Nov 22 01:41:53 PST 2000)

   VMS PAL rev: 0x1000000010538
   OSF PAL rev: 0x100000002012e
   Switch to OSF PAL code succeeded.

   Boot flags: a
   boot: ethernet address: 00:00:f8:23:82:ec
   boot: client addr: 10.20.10.5
   boot: client name:
   boot: server addr: 10.20.10.1
   boot: server path: /usr/exports/bootalpha
   open netbsd: No such file or directory
   boot: ethernet address: 00:00:f8:23:82:ec                                  
 
   boot: client addr: 10.20.10.5
   boot: client name:
   boot: server addr: 10.20.10.1
   boot: server path: /usr/exports/bootalpha
   7774104+250072]=0x7a73c8
                                                                              
 
   Entering netbsd.gz at 0xfffffc00003010c0...
   [ netbsd ELF symbol table not valid ]
   [ no symbol table formats found ]
   Copyright (c) 1996, 1997, 1998, 1999, 2000
   The NetBSD Foundation, Inc.  All rights reserved.                          
 
   Copyright (c) 1982, 1986, 1989, 1991, 1993
   The Regents of the University of California.  All rights reserved.         
 

   NetBSD 1.5 (INSTALL) #10: Wed Nov 22 03:15:21 PST 2000                     
 

root@frau-farbissina.shagadelic.org:/amd/swinger/u1/netbsd-1-5/src/sys/arch/alpha/com 
                                                                 L
AlphaStation 255/233, 232MHz                                                  
 
8192 byte page size, 1 processor.
total memory = 160 MB                                                         
 
(2000 KB reserved for PROM, 158 MB used by NetBSD)
avail memory = 138 MB                                                         
 
using 1024 buffers containing 8192 KB of memory
mainbus0 (root)                                                               
 
cpu0 at mainbus0: ID 0 (primary), 21064A-0 (unknown minor type 0)
apecs0 at mainbus0: DECchip 21072 Core Logic chipset                          
 
apecs0: DC21071-CA pass 2, 128-bit memory bus
apecs0: DC21071-DA pass 2
pci0 at apecs0 bus 0
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
siop0 at pci0 dev 6 function 0: Symbios Logic 53c810a (fast scsi)
siop0: interrupting at isa irq 11
scsibus0 at siop0: 8 targets, 8 luns per target
sio0 at pci0 dev 7 function 0: vendor 0x8086 product 0x0484 (rev. 0x43)
tga0 at pci0 dev 13 function 0: TGA2 pass 2,
fatal kernel trap:

    trap entry = 0x2 (memory management fault)
    a0         = 0x8
    a1         = 0x1
    a2         = 0x0
    pc         = 0xfffffc00004d85ec
    ra         = 0xfffffc00004d85dc
    curproc    = 0xfffffc0000a8aa68
        pid = 0, comm = swapper
 
panic: trap
Stopped in swapper at   0xfffffc000053a0e4:     ret     zero,(ra)
db>