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This publication provides Model 20 o'pera-
tors with the information required to
(1)
build a tape-resident system from IBM-
supplied programs,
(~
maintain this system
by means of IBM-supplied programs ,(3)
execute IBM-supplied and user-written pro-
grams under control of the tape-resident
system, and
(~
execute object programs
under control of the card-resident system.
A tape-resident system is used to con-
trol the compilation, assembly, and execu-
tion of the user's problem programs and the
execution of IBM-supplied programs.
The
principal features and advantages of a
tape-resident system are:
the program
library facility, the macro library facili-
ty, batch job processing, selective phase
loading, and automatic job-to-job
transition.
The card-resident system provides for
stacked-job processing with automatic job-
to-job transition.
It is used to control
the building of a tape-resident system and
the execution of object programs contained
in punched cards.
The card-resident system
offers th0 advantage that all tape drives
available can be used by the object
program.
TERMS AND ABBREVIATIONS
The meaning of the terms and abbrev lations
used in this publication is defined in
~£en~ix-~_§1022~fY.
PREREQUISITES
Readers of this publication should be fami-
liar with the functions and the operation
of all components of their System/360 Model
20.
The publications describing these com-
ponents are listed in the Systems Reference
Library publication
1~~_gy~tem/360_Model
lQ~iQl~ogr~E&Y,
Form A26-3565.
SUMMARY OF IBM-SUPPLIED PROGRAMS
The programmi ng suppo rt which IBM supplies
to users of tape-resident systems comprises
•
the Basic Assembler (tape versions)
•
the Control programs of the card-
resident system
•
the Control programs of the tape-
resident system
•
the Service programs for the tape-
resident system
•
the TPS Report Program Generator
•
the TPS Assembler program
•
the TPS Sort/Merge program
•
the TPS Utility programs
•
Input/Output and Basic Monitor macro
definitions.
A number of IBM-supplied programs are
executed under control of the card-resident
system, others under control of the tape-
resident system, and some can be executed
under control of either system.
Those pro-
grams that are executed under control of
the tape-resident system must be stored,
together with the Basic Monitor program and
the Job Control program of the tape-
resident system, on a tape referred to as
the system tape.
The tape Basic MQnitor is
the first program on the system tape.
It
is followed by a program library, which
contains the tape Job Control program and
all other programs to be executed under
control of the tape-resident system, and by
an (optional) macro library, which contains
the macro definitions.
A brief description of the functions of
each IBM-supplied program is given below.
The tape versions of the Basic Assembler
are stand-alone programs used to assemble
source programs written in the Basic
Assembler language.
The operating proce-
dures for these programs are described in
the SRL publication
IBM~~ste~Ll&Q_nQg~l
~~_f~g_i£Qg£~NN~ng_SuEEor1L
Basic
!2~~~~1§~Jl~Eg_1g£2ions)~pera!i~~Q£g=
gy£g§, Form
C24-9011.
The Control programs of the card and tape-
resident systems are:
•
The Initial Program Loader (IPL)
•
The Basic Monitor program
•
The Job Control program.
The card-resident IPL, Basic Monitor and
Job Control programs are grouped together
for distribution, the three being known
Introduction
5
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