Deadstart; Summary Of Deadstart Procedures; Procedures Using 657 Or 659 Tape Units - Control Data Cyber 170 Series Operator's Manual

DEADSTART
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Deadstart is the process by which the system is made operational and ready to pro-
cess jobs. Under normal circumstances, this is a function performed by the system
operator. System deadstart can be a fully automatic ·procedure or it can involve con-
siderable operator intervention. It is assumed that a deadstart tape exists, which is
configured to meet site requirements. The deadstart tape is a reel of magnetic tape
containing the programs which constitute the operating system and its product set mem-
bers (such as BASIC, FORTRAN, COMPASS, etc.). In addition, the deadstart tape
contains programs necessary to establish the system and its product set on the system
equipment as well as maintenance routines used to test the condition of certain system
equipment. The deadstart tape is not dependent upon a specific equipment configuration.
That is, the same deadstart tape can be used for any supported equipment configuration.
Procedures for· deadstart depend upon the tape unit on which the deadstart tape is
mounted. If a 667 or 669 magnetic tape unit is used to deadstart, special procedures
(coldstart and warmstart) must be followed. Coldstart requires a special card deck to
load the magnetic tape controller controlware prior to the actual loading of the system.
The warmstart procedure is used when the cont:r:-olware has already been loaded and is
functioning properly.
SUMMARY OF DEADSTART PROCEDURES
Generally .. the following summaries are intended to provide a brief overview of the procedures
necessary to deadstart. The more experienced operator may wish to use the appropriate
summary as a checklist during deadstart. Detailed information concerning all phases of the
deadstart process is provided throughout the remainder of this section. It is assumed that
power is applied on all required equipment and that the equipment is functioning properly.
If
at any time loss of power or equipment failure is encountered, consult the site analyst or
customer engineer. Note that the tape unit on which the deadstart tape is to be mounted
must be on a channel without a PPU.
PROCEDURES USING 657 OR 659 TAPE UNITS
1. Ensure that required mass storage devices have packs mounted and/or are available.
2. Mount the deadstart tape (refer to appendix D for operating instructions).
• Check to ensure that write enable ring is not on reel.
• Mount the tape, select the correct density, and ready the unit.
3. Set the deadstart panel (refer to Setting the Deadstart Panel) •.
• Select the correct deadstart function.
• Select the correct CMRDECK.
• Select the correct LIBDECK.
• Select appropriate system devices unless CMRDECK and/or IPRDECK modi-
fication is to be performed.
.• All variable fields on the deadstart panel are indicated by blanks in the accom-
panying illustration. For reference, fill in blanks with values .used most fre-
quently.
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