Control Data Corporation CYBER 170 Series Operator's Manual page 40

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2-22·
Description
1 NOTE I
PPS select switches are
usually set to O. When
dumping PPO, reset these
switches to 1. This causes
. PPO to become PPll
which can then be
dumped. (For
14
PP
systems, PPO becomes
PP6.) Reset the PPS
select switches to 0 after
dumping.
After performing one of the procedures Cif
PPO memory is to be saved), activate the
deadstart switch. The initial options (*A*)
display appears. Enter U to select the
utilities (*U*) display. Enter E to replace the
utilities display with the line:
MT CH 00
Enter the two-digit channel number of the
tape unit to which memory is to be dumped
and press CR. Enter the value from right to
left. The console then displays:
MT ECUU 0000
Enter the one-digit number of the tape unit's
controller (E), the one-digit number
specifying controller type (C where C is 1 for
677/679 tape units, 2 for 667/669. tape units),
and the two-digit number of the tape unit
(UU). The default controller type is 2. Press
CR. 'The console displays:
EXPRESS DUMP NUMBER 00
Enter the two-digit dump identifier from
rJght to left and press CR. This dump
identifier will be placed on the first record of
the tape for future reference. The console
displays:
NONZERO INHIBITS REWIND
To prevent the tape from rewinding before
and after a dump, enter a nonzero octal
number and press CR. To rewind the tape
before and after the dump, either enter 0 and
press CR, or press CR with no entry.
Mul tiple dumps may be taken on a tape by
inhibi ting rewind on each dump.
The contents of central memory, PP
memories, SIC register (on CYBER 170 Series
only), and the CPU hardware register is
dumped.
Description
If an error occurs. during a dump, the
following message is issued:
type,CSaaaa,DSbbbb.
type Type of error
which
occurred:
CON Connect reject.
FCN Function reject.
WRT Write error.
aaaa Channel converter status.
bbbb Controller status.
To retry the dump operation, press CR.
1
NOTE
I
If a CPU is logically turned
off, a flag indicating such is
set in the dump and the CPU is
not excl1anged during EDD
execution. If CPU 0 is down
on a one-CPU machine, both
CPU 0 and CPU 1 must be
logically turned off at
deadstart to avoid exchanging
of the registers.
ECS can then optionally be dumped. The
console displays:
ECS SIZE/lOOO 0000
To dump ECS memory, enter a four-digit
number representing ECS size/lOOO and press
CR. Enter the value from right to left. To
prevent dumping of ECS, either enter 0 and
press CR, or press CR with no entry.
'1
NOTE
I
If both CPUs are logically
turned off, no ECS dump is
performed regardless of the
value entered.
The buffer controller memory of disk and
tape systems can then optionally be dumped.
The console displays:
CONTROLWARE CHANNEL 00
Enter the two-digit channel number of the
controller to be dumped and press CR. This
sequence continues until you press CR wi th
no entry.
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