Service Manuals, User Guides, Schematic Diagrams or docs for : IBM 360 model20 GC26-3600-7_360_20_Card_Programming_Support_Report_Program_Generator_Oct70

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                                               File No. S360(Mod.20)-28
                                               Order No. GC26-3600-7      CPS




    Systems Reference Library




    IBM System/360 Model 20
    Card Programming Support
    Report Program Generator


    This pUblication presents the complete programming
    specifications for the Model 20 Card Report Program
    Generator (RPG) -- a problem-oriented programming
    language.


o   The reader is assumed to have some understanding of
    punched-card data processing, but need not have any
    experience in programming or electronic data processing
    methods.

    This manual also includes performance specifications, a
    list of machine features and units used by the program,
    numerous illustrations, four complete programming
    examples, and appendixes that amplify explanations and
    provide helpful programming hints.




o
PREFACE
                                                                                                    o
This pUblication describes the Report Pro-            However, familiarity with the concepts of
gram Generator (RPG) for programming                  punched-card records and procedures is
punched-card data processing applications             assumed: programming by any language and
on an IBM System/360 Model 20 computer.               for any data processing system always pre-
RPG is an easy-to-use programming                     supposes problem definition, and can do no
language that does not require any prior              more than instruct th'e system to execute
programming or data processing experience.            the data processing steps previously
In conjunction with the Model 20, RPG                 planned by the user.
~ombinep into an integrated operation the
functions performed separately by the
following IBM unit record equipment:                     This manual contains the information
                                                      necessary for programming jobs for the
    Reproducing punches                               Model 20 with the RPG language for punched
    Collators                                         cards. It is intended as a reference text.
    Printers                                          Extensive explanatory and illustrative
    Summary punches                                   material, as well as programming tips and
    Interpreters                                      technical data, is also included to mini-
    Calculators.                                      mize the need to consult additional
                                                      sources.
   The user is expected to be primarily
familiar with his applications and his                   For a list of associated publications
Model 20, rather than with the technical              and their abstracts, see IBM System/360
aspects of machine-oriented programming               Model 20 Bibliography, Order No. GA26-3565.
languages. Experience with unit record                Readers without previous data processing
or data processing systems equipment and              systems experience may find particularly
procedures will be helpful, but 1s not                useful information in IBM System/360 Model
a prerequisite to an understanding, or                20, Introduction and System Summary, Order
utilization, of RPG.                                  No. GA26-5889.




Eighth Edition (October, 1970)

This is a reprint of GC26-~600-6 incorporating changes
released in the following Technical Newsletters:

      GN33-8593   (dated February 28, 1969)
      GN33-8601   (dated April 15, 1969)
      GN33-86ll   (dated April 6,1970).
This edition applies to version 2, modification 7, of IBM
System/360 Model 20, Card Programming Support, Report Pro-
gram Generator, and to all subsequent versions and modifica-
tions until otherwise indicated in new editions or Technical
Newsletters.

 Changes are continually made to the information herein;
'before using this publication in connection with the opera-
 tion of IBM systems, consult the latest SRL Newsletter,'
 Order No. GN20-036l, for the editions that are applicable
 and current.

Requests for copies of IBM publications should be made to
your IBM representative or to the IBM branch office serving
your locality.

A form for readers I comments is provided at ,the back of this
publication.   If the form has been removed, comments may be
addressed to IBM Laboratory, Publications Dept., P.O.Box 24,
Uithoorn, Netherlands.

C Copyright International Business Machines Corporation 1965, 1966, 1967, 1968, 1970
o   INTRODUCTION 

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