Technical data
5-4 9030/40 Diagnostics
Self
test
error
4:
Memory
reduced
to:
NNNNNNNN
Bytes.
MCs:(list)
Where:
NNNNNNNN
= number of bytes
(in
decimal) that are available.
<list>
= A
list
of Memory Controller numbers which had failures. Up to
10
MC
numbers are printed
in
10 two character fields, with no intervening spaces. For
example:
"MCs: 1
210"
indicates that Memory Controllers
1,
2,
and
10
have failed
the memory test. Memory boards (and memory controllers) are numbered from
1~
starting
at
the bottom of the
RAM.
This number represents
all
usable
RAM
in
the system including memory used to hold code seg-
ments.
S
elf
t
est
err
0 r
5:
Fewer
fin
s t
rat
e s
we
ref
0
un
d t han ex p e C
ted.
- This message
is
diSplayeJ
when the number of boards recorded
in
the Non-Volatile Memory
(NVM)
is
greater than the actual
number of boards
in
the stack. If the number of boards
in
the stack
is
greater than the number
stored
in
the
NVM,
the
number
in
the
NVM
is
updated to reflect the larger stack
size.
Fatal Error Messages
SYstem
halted
due
to
double
bit
memory
error
on
MC
#
NN
CCCCCCCC
Where:
NN
=
MC
#
CCCCCCCC
= Last healer content
for
that
MC
(in
hexadecimal).
This message
is
displayed when a double bit error has been detected by the memory controller
hardware. The
MC#
is
in
terms of memory controller boards (counting up from the bottom of the
stack). This information
is
also recorded
in
the
NVM.
If more than
one
MC
with a double bit error
is
found, only the last error
is
displayed.
If
no double bit
errors are found,
"No
DBE found" replaces
NN
XXXXXXXXX.
DBE information
is
stored in the
NVM.
SYSTEM_HALTED:
Insufficient
~lemor>'
to
start
Sl'Stem - This message
is
displayed when there
is
insufficient memory for the operating system
and
user subsystem. Check the stack self-test lights
to see
if
any stack components have failed self-test.
Also,
check the memory configuration of the
computer to see
if
it
is
large enough to accomodate the system
and
options which are being loaded.
SYSTEM
HALTED:
IncoMPatible
lOPs - This message indicates that
an
illegal combination of lOP
boards were found at power up. lOPs of Revision 2.1 or earlier are not compatible with lOPs of
Revision 2.2 or later.
System
Error
Message
Sl'steM
hal
ted-
>SYSTEM
ERROR:
••••
- This message
is
displayed when the operating system soft-
ware encounters either:
• an unanticipated trap,
•
an
unrecoverable system software error.
The
"trap"
is
distinguished from the software error by the word "trap:" which
is
added
to the
first
line of the message.
Before displaying any messages, the currently executing
CPU disables
its
interrupts
and
causes
all
other CPUs to stop operating. The message text
is
multiple lines information dumped from
memo~
and
internal registers. The message starts
on
the top line on the Display and overwrites any
othe~
messages
on
the CRT. If a printer
is
the output device and the message
is
more than
25
lines
in
length, the message continues to print (up to
500
lines).