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File No. S360-20
Form C28-6534-1
Systems Refl!rence Library
IBM System/360 Operating System
Introduction
This publication describes the general organization,
function, and application of IBM System/360 Operating
System.
The operating system is designed to extend the
performance and application of computing System/360 and
to assist. the manager, programmer, and operator of the
system. The operating system consists of a comprehen-
sive set of language translators and service programs
operating under the qupervisory control and coordina-
tion of an integrated set of control routines. It is
designed for use with Models 30, 40, 50, 65, and 75 of
Computing System/360. The operating system is located
in direct-access storage, such as disk or drum, and
operates on a computing system having 32,768 bytes or
more of main storage.
PREFACE
The purpose of this publication is to
serve as a general introduction to IBM
System/360 Operating System. Since many
combinations of programming and computing
facilities are possible with IBM
System/360, no attempt is made in this
summary to relate the operating system
facilities to specific machine require-
ments. More comprehensive information may
be obtained. from IBM representatives or by
reference to the publications described in
the last section of this publication.
Abstracts of other System/360 publications
are contained in the IBM Systern/360: Bib-
liography, Form A22-6822.
MAJOR REVISION (November. 1966)
This publication is a major reVl.Sl.on of the previous editicn.. Form
C28-6534-0. which is now obsolete. The section "Publications" has been
rewritten to reflect the more complete set of publications prepared for
IBM System/360 Operating System. In addition. minor changes have been
made throughout~.
This publiccltion was prepared for production using an IBM comFuter to
update the tmet and to control the page and line format. Page
impressions for photo-offset printing were obtained from an lEN 1403
Prihter using a special print chain.
copies of this and other IBM publications can be obtained thre,ugh IBM
Branch Offices.,
A form for readers' comments appears at the back of this pubH cation.
It may be mailed directly to IBM. Address any additional comments
concerning this publication to the IBM Corporation, Programming Systems
publications. Department D58. PO Box 390. POUghkeepsie, N. Y. 12602