If I boot my 3/75 using the SCSI_TEST kernel with ID

NetBSD 1.1_ALPHA (SCSI_TEST) #19: Mon Nov  6 15:19:18 EST 1995
    gwr@venus:/play/gwr/netbsd/work/src/sys/arch/sun3/compile/SCSI_TEST

and then try to run X11R6, several of the programs called by
my .xinitrc (among them awk, sed, tr, tty, and csh) core dump.
so, for that matter, does gdb.

On the other hand, if I boot this kernel:

NetBSD 1.0A (GENERIC) #31: Mon Aug 21 16:38:21 EDT 1995
    gwr@venus:/play/gwr/netbsd/work/src/sys/arch/sun3/compile/GENERIC

X11R6 starts up just fine (though it takes forever)

I examined the coredumps using gdb under this kernel.
They tell me that the programs died with signals 10
(all except csh) and 11 (csh) but all attempts to get a stack
backtrace result in 'Cannot access memory at address 0x0.'

-Keith

p.s. here's the probe output from the machine:

NetBSD 1.1_ALPHA (SCSI_TEST) #19: Mon Nov  6 15:19:18 EST 1995
    gwr@venus:/play/gwr/netbsd/work/src/sys/arch/sun3/compile/SCSI_TEST
Model: Sun 3/160
real mem = 8372224
avail mem = 6922240
using 63 buffers containing 516096 bytes of memory
mainbus0 (root)
obctl0 at mainbus0
idprom0 at obctl0 hostid 0x110001f8
fpu0 at mainbus0 (mc68881)
obmem0 at mainbus0
bwtwo0 at obmem0 addr 0xff000000 (1152x900)
obio0 at mainbus0
zs0 at obio0 addr 0x20000 level 6 softpri 3
zs1 at obio0 addr 0x0 level 6 softpri 3
eeprom0 at obio0 addr 0x40000
clock0 at obio0 addr 0x60000 level 5
ie0 at obio0 addr 0xc0000 level 3 hwaddr 08:00:20:01:33:67
vmes0 at mainbus0
si0 at vmes0 addr 0xff200000 level 2 vector 0x40
scsibus0 at si0
si0 targ 0 lun 0: <SEAGATE, ST31200N, 8630> SCSI1 0/direct fixed
sd0 at scsibus0: 1006MB, 2700 cyl, 9 head, 84 sec, 512 bytes/sec
si0 targ 1 lun 0: <EMULEX, MD21/S2     ESDI, A00> SCSI0 0/direct fixed
sd2 at scsibus0: 135MB, 1024 cyl, 8 head, 33 sec, 512 bytes/sec
si0 targ 1 lun 1: <EMULEX, MD21/S2     ESDI, A00> SCSI0 0/direct fixed
sd3 at scsibus0: drive offline
si0 targ 2 lun 0: <SEAGATE, ST11200N, 9300> SCSI2 0/direct fixed
sd4 at scsibus0: 1003MB, 1872 cyl, 15 head, 73 sec, 512 bytes/sec
vmel0 at mainbus0
rd0 at mainbus0
rd1 at mainbus0
root on sd2a
swap on sd2b
dump on sd2b