----- Original Message -----
From: "Chuck Silvers" <chuq@chuq.com>
> hi,
>
> yea, the register dump isn't so useful.  try building a kernel with
> "options DDB" turned on and with the attached patch applied.
> that should give a stack trace with function names when it crashes.
>
> -Chuck

I built a RAMDISK kernel with the sun3trap patch and DDB enabled. (Well,
first I build a 1.6 compat toolchain, *then* 24 hours of compiling later I
built a 1.6 kernel ;)

Unfortunately it can't seem to mount the ramdisk root filesystem. Only
change from the stock RAMDISK config was to enable DDB.

Do I need, perhaps, to build a ramdisk filesystem image as a second step?
Any hints? Boot messages follow...

--Adam

starting program at 0x4000
console is ttya
[ using 134572 bytes of netbsd ELF symbol table ]
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002
    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 1.6 (RAMDISK-adk) #0: Fri Nov 22 00:01:26 EST 2002
    adk0212@bigmama:/usr/src/sys/arch/sun3/compile/RAMDISK-adk
Model: sun3 260
fpu: mc68881
total memory = 24576 KB
avail memory = 21352 KB
using 166 buffers containing 1328 KB of memory
cache enabled
mainbus0 (root)
obio0 at mainbus0
zsc0 at obio0 addr 0x0 ipl 6: (softpri 3)
kbd0 at zsc0 channel 0: baud rate 1200
zsc0:  channel 1 not configured
zsc1 at obio0 addr 0x20000 ipl 6: (softpri 3)
zstty0 at zsc1 channel 0 (console i/o)
zstty1 at zsc1 channel 1
eeprom0 at obio0 addr 0x40000
clock0 at obio0 addr 0x60000 ipl 5
memerr0 at obio0 addr 0x80000 ipl 7: (ECC memory)
intreg0 at obio0 addr 0xa0000
ie0 at obio0 addr 0xc0000 ipl 3: macaddr 08:00:20:06:19:c4
vme0 at mainbus0: (A16/D16)
vme1 at mainbus0: (A16/D32)
vme2 at mainbus0: (A24/D16)
si0 at vme2 addr 0x200000 ipl 2 vect 0x40: options=0xf
scsibus0 at si0: 8 targets, 8 luns per target
vme3 at mainbus0: (A24/D32)
vme4 at mainbus0: (A32/D16)
vme5 at mainbus0: (A32/D32)
enabling interrupts
scsibus0: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 0 lun 0: <HP, C3725S, 6039> SCSI2 0/direct fixed
sd0: 2047 MB, 3703 cyl, 9 head, 125 sec, 512 bytes/sect x 4194058 sectors
sd0: async, 8-bit transfers
sd1 at scsibus0 target 1 lun 0: <Quantum, VP32210, 81HA> SCSI2 0/direct
fixed
sd1: 2103 MB, 4243 cyl, 8 head, 126 sec, 512 bytes/sect x 4308352 sectors
sd1: async, 8-bit transfers
md0: internal 400 KB image area
boot device: ie0
root on md0a dumps on md0b
cannot mount root, error = 22
root device (default md0a):