Keyboard Entries; Initiating Deadstart Process; Selecting Cti Initial Options (*A*) Display - Control Data Corporation CYBER 170 Series Operator's Manual

KEYBOARD ENTRIES
The following statements apply to operator/console
communication during deadstart.
Refer to the illustration of console keyboard in section 1.
• Entries typed from the console keyboard are
displayed on the bottom of the left console screen
as they are entered.
• The BKSP key deletes the previous character
typed.
• The left blank key deletes the current line being
typed (left blank is third key from right on top
row of keyboard).
• The following message may appear above the
console entry if the entry is unrecognizable:
INVALID ENTRY. An arrow points to the first
field in error.
INITIATING DEADSTART PROCESS
Initiate the deadstart process by momentarily activating
the deadstart switch. Use either the toggle switch labeled
DEAD START on the deadstart panel or the deadstart
bu tton on the display console.
Most of what you do during system deadstart is
preliminary. That is, you specify the conditions -of
deadstart. Deadstart proceeds automatically until you are
required to initialize the system or an error is encountered
(refer to Initializing the System later in this section).
Generally, automatic deadstart consists of the following
steps.
1. Validate labels on all mass storage devices. This
is done to ensure that the configuration matches
that specified in the CMRDECK being used.
2. Build central memory tables that reflect
information contained in the device labels (level
0
deadstart only). If a recovery deadstart is being
performed, the central memory tables can be
recovered from checkpoint information on mass
storage (level 1 or 2) or verified against
information in device labels if central memory is
found to be intact (level 3).
*A*
3. Load base operating system (core system)
programs into central memory. Again, the level
of deadstart determines the amount of loading to
be performed.
You can monitor deadstart progress on the console display
screen(s). If errors are encountered during deadstart, a
descriptive message is displayed on the right console screen
and dea.dstart halts~ Refer to Error Processing at the end
of this section for complete information and corrective
action.
If
the left display screen is replaced by an error display, an
irrecoverable error has occurred. Deadstart halts. Refer
to appendix B for a description of the messages and
appropriate action.
SELECTING CTI INITIAL OPTIONS (*A*) DISPLAY
This section describes the deadstart displays and options
provided by the common testing and initialization (CTI)
module. The initial options (*A*) display always appears
first. From the *A* display, you can select additional
options or you can instruct the system to proceed with
automatic system deadstart.
The *A* display provides foul' options as figure 2-14
illustrates.
Option
(CR)
o
u
Description
OS load automatic. Press CR to load the
operating system with no intervention on your
part. Additional options cannot be selected
after this entry.
Deadstart with operator intervention. Select
this option to display the operator
intervention (*0*) display. The *0* display is
described later in this section.
Utilities. Select this option to display the
utility (*U*) display. The *U* display is
described later in this section.
Offline maintenance. Select this option to
initiate the offline maintenance tests. Refer
to the MSL 100 Off-Line Maintenance System
I
Library Reference . Manual for more
information.
The version of CTI is indicated at the bottom of the *A*
display.
(CR) - OS LOAD AUTOMATIC
o -
DEADSTART WITH OPERATOR
INTERVENTION
U - UTILITIES
M -
OFFLINE MAINTENANCE
CTI
ADO
Figure 2-14. CTI Initial Options (*A) Display
t
The off-line maintenance (M) option does not appear if MSL is not installed at your site.
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