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----- Series/1
SC34-0316-2 LICENSED
PROGRAM
File No. S1-30
IBM Series/1
Event Driven Executive
Communications and Terminal
Applications Guide
Program Numbers: 5719-LM5 5719-LM6 5719-MS1
5719-UT3 5719-UT4
5719-XS1 5719-XS2
5719-XX2 5719-XX3
5740-LM2 5740-LM3
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--_.- Series/1
SC34-0316-2 LICENSED
PROGRAM
File No. S1-30
IBM Series/1
Event Driven Executive
Communications and Terminal
Applications Guide
Program Numbers: 5719-LM5 5719-LM6 5719-MS1
5719-UT3 5719-UT4
o 5719-XS1
5719-XX2
5740-LM2
5719-XS2
5719-XX3
5740-LM3
o
o
Third Edition (APRIL 1980)
Use this publication only for the purpose stated.
Changes are periodically made to the information herein;
before using this publication in connection with the operation
of IBM systems, refer to the latest IB~1 Ser i es/1 Graph i c
Bibliography, GA34-0055, for the editions that are applicable
and current.
It is possible that this material may contain reference to, or
information about, IBM products (machines and programs),
programming, or services which are not announced in your coun-
try. Such references or information must not be construed to
mean that IBM intends to announce such IBM products, program-
ming, or services in your country.
Publications are not stocked at the address given below.
Requests for copies of IBM publications should be made to your
IB~l representat i ve or the IBM branch off i ce serv i ng your local-
it y.
This publication could contain technical inaccuracies or
typographical errors. A form for reader's comments is provided
at the back of this pUblication. If the form has been removed,
address your comments to IBM Corporation, Systems Publica-
tions, Department 27T, P.O. Box 1328, Boca Raton, Florida
33432. IBM may use and distribute any of the information you
supply in any way it believes appropriate without incurring any
obligation whatever. You may, of course, continue to use the
()
information you supply.
(C) Copyright IBM Corporation 1979,1980
SUMMARY OF AMENDMENTS
Terminal Support
Terminal support information for the 3101 Display Termi-
nal (Models 1 and Model 2) was added to Chapter 1.
Multiple Terminal Manager
Chapter 5 has been modified for PL/I and 3101 Display
Terminal as provided by the Multiple Terminal Manager.
Remote Management Utility (Version 2 only)
o Chapter 6 is a new chapter
Management Utility.
that describes the Remote
The Bibliography lists the books in the Event Driven
Executive library and a recommended reading sequence.
Other pUblications related to the Event Driven Executive
are also listed.
Miscellaneous Changes
This manual has been modified to include new function
and to improve technical accuracy and clarity. Addi-
tional material and technical changes are indicated by
vertical bars in the left margin.
o
SC34-0316 iii
HOW TO USE THIS BOOK
The material in this section is a guide to the use of this book.
It defines the purpose, audience, and content of the book as
well as listing aids for using the book and background materi-
o
als.
PURPOSE
The IBM Series/l Event Driven Executive Communications and
Term ina I App I i cat ions Gu i de, SC34-0316 descr i bes how to use
the Event Driven Executive to communicate with interactive
devices, such as, terminals or other processors.
This manual provides extensions to the System Guide, the
Utilities, Operator Commands, Program Preparation, Messages
and Codes, and the Language Reference manuals.
AUDIENCE
T his. boo k i s wr itt e n for 5 y s t e man d a p p 1 i cat ion pro g ram mer s
with cons i derab Ie knowledge in BSC and host ope rat ion,. inc I ud-
ing IBM and non-IBM communications hardware.
To write applications for remotely attached devices, you must
be familiar with line control procedures. Experience in pro-
gramming realtime programs in the Event Driven Language is
required. Experience coding programs in assembler language for
the Series/l wi 11 enable you to extend the terminal application
capabilities of the system.
HOW THIS BOOK IS ORGANIZED
This book is organized into two parts. The first part explains
criteria for selecting communications methods or techniques
available with the Event Driven Executive system. The second
part consists of individual chapters which describe how to
design particular communication techniques.
iv SC34-0316
The top i cs covered in part two inc I ude:
o Terminal Support
Binary Synchronous Communications
Host Communications Facility
Multiple Terminal Manager
Remote Management Utility
EXAMPLES AND OTHER AIDS
Throughout this book, coding examples and illustrations are
used to clarifY coding techniques and requirements. Coding
examples are fully executable portions of complete programs
that may be entered as they are shown. Cod i ng ill ustrat ions are
non-executable portions of incomplete programs that show the
correct format of all required parameters on a statement. Miss-
ing code, or code provided by you, is indicated by a series of
vertical or horizontal dots.
() Several other aids are provided to assist you in
book:
using this