IBM System/360 20 User Manual

programs. Permits retrieval of program~
and/or phases by the (Basic) Monitor.
~~=lmage M~in~gn~nc~g£Qg£~m: A System
Service program. Updates the core-image
library and directory. Is used to add
and/or replace and/or delete phases and the
(Basic) Moni tor.
Core=Im~gg_~grvic~PrQg'£~!!!': A syst,~m
service program that permits the printing
and/or punching of one or more entries of
the core-image library.
£PSY~: Copy System Tape Program.
£~]]y: Core-Image Service Program.
g~i~_filg: A collection of related records
treated as a unit and consisting of data in
one of several prescribed arrangements and
described by control information to which
the system has access.
~~i~g11_Y~lQg: The operand specification
assumed by a program when the value is
omitted.
Dirg£to.£Y_~nl~Y: A unit in the core-image
or macro directory. (Phase header or macro
identifier .)
..Qirectoil_~ervi.fg_.Rrogrl!m: A system
Service program. Causes p~inting of the
core-image and/or macro directory and/or
system directory.
]i§J21acemgnt: A value, or an expression
representing a value, which is added to a
base address to obtain the effective
address.
Qi§£l~y_Se.£yi£~g~Qg.£am: See Directory
Service Program.
~~~RY: Directory Service Program.
]BCDIC: (Exten ded Binary Coded Decimal
Interchange Code) A specific set of
eight-bit codes standard throughout
System/360.
ECf_~~£g: End-of-file card which
terminates a logical set of input data.
(/*b in columns 1-3.)
Filg: See Data File.
Iixeg=1gngth_]ecQ~g: A record having the
same length as all other records with which
it is logically or physically associated.
Hal,!.!!.Q.£g: Two adjacent bytes where the
left byte is on a halfword boundary.
Halfword Boundary: Even-numbered byte
position in main storage, coincident with
the left byte of a halfword.
Hexadecimal: A number system using the
eguivalent-of the decimal number 16 as a
base. The values 0-15 are represented by
the digits 0-9 and the alphabetic
characters A-F.
l~i!i~li~g: To set counters, switches, and
addresses to zero or other starting values
at the beginning of, or at prescribed
points in, a computer routine.
Ini!il!l PrQ~ram LOl!gg~-llR11: A System
Control program. Loads (Basic) Monitor
into main storage. Required for the
initialization of the system.
~llnBQ!LOuiEutl: Input or output, or
both.
lLg_!~gl!: An area (portion) of main
storage into which data is read or from
which data is written. I/O means
Input/Output.
1FL: Initial Program Loader.
Job_control PrQgram: A System Control
program. Called into main storage between
jobs and provides for automatic job-to-job
transition. Processes control statements
in the input stream that identify a job or
define its requirements and options.
Q.Q1L~.Qn t~.Ql_~ta!g!l!gn!: Anyone of the
control statements in the input stream that
identifies a job or defines its
requirements and options.
K-~y!g§: 1024 bytes. For example: nK = n
x
1024 bytes.
~abgl: A physical identification record on
magnetic tape or disk. See Tape Labels.
1DS1~: Load System Program.
1i~.£~£Y_~~n~g~!!!.gn!_l.£Q~'£l!m§: Collective
term for five system Service programs:
Core-Image Maintenance, Macro Maintenance,
Core-Image Service, Macro Service, and
Directory Service.
1in~£gg_~giiQ.£: A system Service program.
Relocates programs or phases and links
separately assembled programs or phases.
1Q~Q_~~§!g!l!_l~Q~~~!l!: A Service program
that creates a tape or disk-resident system
from card input.
1.Qgi£~!-Bg£Q.£Q: A record identified from
the standpoint of its content, function,
and use rather than its physical
attributes. It is meaningful with respect
to the information it contains.
(Contrasted with Physical Record.)
Appendix C. Glossary 169

IBM System/360 20 Specifications

General

Brand	IBM
Model	System/360 20
Category	Storage
Language	English