Control Data Corporation CYBER 170 Series Operator's Manual page 34

I
2-16
Description
Word
Description
CM Central memory size.
RA Relative address for all central
memory accesses.
FL Field length for
all
central
m em ory accesses.
CPUO Test status of CPUO.
CPUl Test status of CPUI.
PPS Test status of PPs in the system.
PPUS Tes"t status of PPUs in the
system.
EM EXtended memory selection.
EMRA Relative address for all EM
accesses.
EMFL Field length of all EM accesses.
To add or delete hardware to be tested, make
the following entries.
Entries
A,CM or D,CM
A,CO or D,CO
A,Cl or D,Cl
A,PS or D,PS
A,PU or D,PU
A,EM or D,EM
Description
Add (A) or delete (D)
central memory tests.
Add or delete CPUO
tests.
Add or delete CPUI
tests.
Add or delete PPS
tests.
Add or delete PPU
tests.
Add or delete
memory extended
tests.
Press CR to start testing.
In general, each test depends upon the results"
of a previous test. DDS displays the
following messages during the tests.
TESTING REG
TESTING PPS
TESTING PPUS
TESTING CM
TESTING CPU xx
TESTING EM
H
Description
If an error condition occurs, one of the
following messages appears.
ERROR PP xx
ERROR PPU xx
ERROR CM
ERROR CPU xx
ERROR EM
ERROR REG
xx indicates the PP, PPU or CPU in error.
Consult a customer engineer.
Upon test completion, DDS checks for" any
status/control register errors (CYBER 170
only) and displays SCR ERROR or
DEADSTART DIAGNOSTICS COMPLETED
followed by DEADSTART IS REQUIRED.
Toggle the deadstart switch after testing to
ensure that the system is returned to initial
deadstart condition prior to system loading or
recovery. Do this whether testing was
successful or not.
Refer to the On-Line Maintenance Software
I
Reference Manual for additional information.
Hardware reconfiguration. Select this option
to alter the hardware configuration. The *H*
display appears on the left screen as
illustrated in figure
2-20.
The *H* display shows the current hardware
configuration. This display initially reflects
the default condition, which is that every
hardware element is available to use.
Through keyboard entries, you can al ter the
hardware configuration to prevent use of
selected hardwareelem ents."
Press CR if you wish to continue system
deadstart processing with no further
intervention on your part. You cannot select
additional options after this entry.
Press BKSP if you wish to return to the *0*
display.
The CM=nnnnnn entry indicates the size of
central memory.
When you turn off any element of the types
CPU, PP, or PPU, its identifier is added to
the list of OFF ELEMENTS on the display.
The identifiers will be removed from the list
if the element is subsequently turned back
on. The list is empty when you first bring up
the display.
Table 2-1 shows the keyboard entries that you
can make to reconfigure the hardware.
Entries are in the form keyword=option.
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