Hello!
After 60 days of smooth running my poor DEC3000 with 160MB RAM
dead with a machine check.
I tested all the moemory and the memory is ok no damaged chips or ECC
problems. I would like to ask you in your opinion what it could be the
origin of a problem like this??
I Report here the debugger output of the crash.
Is it for sure a hardware problem or it could be an OS problem ?
I Am running 1.5.3_ALPHA.
thanks.

Rick

cpu_Debugger() at cpu_Debugger+0x4
panic() at panic+0xfc
machine_check() at machine_check+0x204
interrupt() at interrupt+0x14c
XentInt() at XentInt+0x1c
--- interrupt (from ipl 0) ---

unexpected machine check:

    mces    = 0x1
    vector  = 0x660
    param   = 0xfffffc0000108060
    pc      = 0xfffffc00004d1cf4
    ra      = 0xfffffc00003096f4
    curproc = 0xfffffc0006baaf10
        pid = 298, comm = fetchmail

panic: machine check
Stopped in fetchmail at cpu_Debugger+0x4:       ret     zero,(ra)


v0                 0x7
t0          0xfffffc000051e1c0  db_onpanic
t1                 0x1
t2                   0
t3          0xfffffc00004f5a06  fmt.78+0xf1b
t4                   0
t5               0xbd4
t6                   0
t7                 0x1
s0          0xfffffe00072e7e68
s1                 0x8
s2                 0x1
s3               0x100
s4          0xfffffc000050f750  ncpuinit+0x288
s5               0x660
s6          0xfffffc000050f7ef  ncpuinit+0x327
a0                 0x7
a1                 0xd
a2                   0
a3                   0
a4          0xfffffe00072e7dc8
a5                 0x8
s6          0xfffffc000050f7ef  ncpuinit+0x327
a0                 0x7
a1                 0xd
a2                   0
a3                   0
a4          0xfffffe00072e7dc8
a5                 0x8
t8              0x6000
t9                 0x1
t10                  0
t11         0xeecb46e3
ra          0xfffffc000034ccdc  panic+0xfc
t12         0xfffffc00004def60  cpu_Debugger
at          0x16066ecf8
gp          0xfffffc0000537230  mountroot+0x8008
sp          0xfffffe00072e7df8
pc          0xfffffc00004def64  cpu_Debugger+0x4
ps                 0x7
ai          0xeecb46e3
pv          0xfffffc00004def60  cpu_Debugger
cpu_Debugger+0x4:       ret     zero,(ra)