Control Data Corporation CYBER 170 Series Operator's Manual page 282

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Displays
Two console screens or a spli t screen used to display
system and job information, operator messages, and
contents of central memory. Through the console
keyboard, you can control the operation of the
system. The displays are identified by alphabetic
characters. You can request various displays; some
used frequently are: job status (B), system files (H),
and dayfile messages (A).
Downline
The direction of output flow, from host computer to
terminal.
DSD (System Display)
ECS
The operating system program that provides
communication between you and the system by
accepting control information typed on the console
keyboard and by displaying to you information
pertinent to all jobs known to the system. DSD is
permanently assigned to PPl.
An extended core storage containing 60-bi t words.
ECS has a large amount of storage and fast transfer
rates.
It
can also be used as if it were a disk for
functions such as high speed system loading or rolling
out user jobs.
EST Ordinal
The number designating the position of an entry within
the equipment status table established at each
installation. Devices are identified in operator
commands by these ordinals, ranging from 1 to 77
octal. The EST ordinal is sometimes referred to as
equipment number.
Family Name
A designation that the installation may give to a group
of permanent file devices.
Field Length
The area in central memory allocated to a particular
job; the only part of central memory that a job can
directly access.
First Level " Peripheral Processor (FLPP)
The processor that is connected directly to the CYBER
170 Model 176 mainframe and operates synchronously
with the mainframe.
Forms Code
An attribute of output" files and output devices. The
user can specify special forms required for output;
you can mount the special forms and use the
FORMxx,fc command to let the system process the
user's output.
Indirect Access File
C-2
A permanent file that is accessed and modified by
making changes to a temporary copy of the file, which
can be substituted for the contents of the permanent
file.
Local Batch Job
A job submitted at the central computer site through a
card reader ..
Local Operator (LOP)
The administrative operator who manages the
communication elements of the network within the
computer system by communicating with the
communications supervisor in the host computer. The
local operator is an administrative operator within the
network and need not be the host computer's operating
system operator.
Mass Storage Device
An ECS or disk unit which has defined logical
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attributes such as family, file residency, and so on.
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Monitor
The routines residing in central memory (CPUMTR)
and PPO (MTR) which control all system activities.
Multimainframe System
A network of physically and logically connected NOS
computer systems.
Multispindle Device
A logical mass storage device which includes two to
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eight disk units.
Multiterminal Job
A job which does one specific task for many terminals
while being scheduled into the system only. once.
Network
An interconnected set of network processing units,
hosts, and terminals.
Network Operator (NOP)
The administrative operator who manages the
hardware, linkages, and other network elements of the
data communication network by communicating with
the network supervisor in a host computer. The
network operator can also be a local operator, but
might not be the operating system operator for the
host computer.
Network Processing
The collection of hardware and software that switches
buffers, and transmits data between terminals and host
computers.
Network Supervisor (NS)
The program that coordinates all of the NPUs in the
communication network.
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