I am using the netbsd.iisi2.test kernel which boots fine to a point!
with this output.  I've done single user a few times, only to fsck.

here is the multiple user boot -- it always crashes at this point

--------
--------
[ preserving 73360 bytes of netbsd symbol table ]
Low = 0x0, high = 0x100000
Low = 0x4000000, high = 0x4400000
5242880 bytes available (1280 pages)
Log = 0xf9000000, Phys = 0xf9000000, Len = 0x6000000 (100663296)
get_mapping(): no internal video.
  Video address = 0xf9900020
  Weird mapping starts at 0x0
  Length = 0x0 (0) bytes
Copyright (c) 1982, 1986, 1989, 1991, 1993
	The Regents of the University of California.  All rights reserved.

NetBSD 1.0 (GENERIC) #11: Wed Nov  2 15:32:28 EST 1994
    briggs@kitten.home.net:/usr/src/sys/arch/mac68k/compile/GENERIC
Apple Macintosh IIsi  (68030)
real mem = 5238784
avail mem = 2736128
using 89 buffers containing 364544 bytes of memory
Desktop bus initializing...
adb_init(): timed out!!!!!
mainbus0 (root)
ite0 at mainbus0 (minimal console)
adb0 at mainbus0 (adb event device)
nubus0 at mainbus0
grf0 at nubus0: 640 x 480 1 color MacVideo (Mac II High-Resolution Video Card) display
ser0 at mainbus0
ncrscsi0 at mainbus0
scsibus0 at ncrscsi0
scsibus: probing bus 0.
 targ 0 lun 0: <DEC     DSP3053LS       X442> SCSI2 direct fixed
sd0 at scsibus0: 511MB, 3117 cyl, 4 head, 83 sec, 512 bytes/sec
ncr96scsi at mainbus0 not configured
asc0 at mainbus0 Apple sound chip.
floppy at mainbus0 not configured
Changing root device to sd0a.
swapping 401 and 401.
swapdev = 401, dumpdev = ffffffff.
WARNING: file system time earlier than 1975
 -- CHECK AND RESET THE DATE!
Automatic boot in progress: starting file system checks.
/dev/rsd0a: INCORRECT BLOCK COUNT I=10883 (2 should be 0) (CORRECTED)
/dev/rsd0a: UNREF FILE I=10883  OWNER=root MODE=100644
/dev/rsd0a: SIZE=0 MTIME=Dec 31 13:27 1903  (CLEARED)
/dev/rsd0a: LINK COUNT FILE I=60169  OWNER=root MODE=100444
/dev/rsd0a: SIZE=1127 MTIME=Dec 31 13:27 1903  COUNT 2 SHOULD BE 1 (ADJUSTED)
/dev/rsd0a: BLK(S) MISSING IN BIT MAPS (SALVAGED)
/dev/rsd0a: SUMMARY INFORMATION BAD (SALVAGED)
/dev/rsd0a: FREE BLK COUNT(S) WRONG IN SUPERBLK (SALVAGED)
/dev/rsd0a: 1072 files, 20156 used, 232466 free (426 frags, 29005 blocks, 0.2% fragmentation)
setting tty flags
starting network
add host myname.my.domain: gateway localhost
starting rpc daemons: portmap.
starting system logger, time daemontimed: no network usable
.
checking for core dump...
savecore: no core dump (no dumpdev)
checking quotas: done.
building databases...
clearing /tmp
standard daemons: update cron.
starting network daemons: routed printer inetd.
starting local daemons:.
runtime link editor directory cache
Thu Dec 31 13:31:03 PST 1903
Dec 31 13:31:03 myname init: kernel security level changed from 0 to 1

panic: POXORJr2

Stopped at      _Debugger+0x6:  unlk    a6

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