Systems
File No. S37()'36 Order No. SY2()'0884-3 IBM Virtual Machine Facility/370: Data Areas and Control Block Logic I Release 6 PLe 4
This publication, together with the VM/370 System Logic
and Problem Determination Guide, Volumes 1, 2, and 3,
is intended for use by system programmers responsible
for updating VM/370. This publication contains
descriptions of the major data areas and control blocks
used by three of the components of VM/370, the Control Program (CP), the Conversational Monitor System (CMS), and the Remote Spooling Communications Subsystem (RSCS). To use this publication effectively and to understand
it thoroughly, the following publications are
prerequisite:
IBM System/ 370 Principles of Operation Order No. GA22-7000 IBM OS/VS, DOS/VS, and VM/370 Assembler Language, Order No. GC334010 ---
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Page of 5Y20-0884-3 As Updated Aug. 1, 1979 by 5N25-0497 (March 1979)
This is a major revision of, and obsoletes, SY20-0884-2 and Technical
Newsletters SN25-0413, SN25-0453, and SN25-0466. This edition (SY20-0884-3) together with Technical Newsletter SN25-0491, dated August
1, 1919, applies to Release 6 PLC 4 (Program Level change) of the IBM Virtual Machine Facility/370, and to all subsequent releases unless
otherwise indicated in new editions or Technical Newsletters.
Technical changes and additions to text and illustrations are indicated
by a vertical bar to the left of the change.
Changes are periodically made to the information herein; before using
this pUblication in connection with the operation of IBM systems,
consult the latest Order No. GC20-0001, for
the editions that are applicable and current.
It is possible that this material may contain references to, or
information about, IBM products (machines and programs), programming, or
services that are not announced in your country. Such references or
information must not be construed to mean that IBM intends to announce
such IBM products, programming, 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 IBM representative or
to the IBM branch office serving your locality.
A form for readers' comments is provided at the back of this
publication. If the form has been removed, comments may be addressed to IBM Corporation, VM/310 publications, Dept. D58, Bldg. 106-2, P.O. Box 390, Poughkeepsie, New York 12602. IBM may use or 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.
© Copyright International Business Machines Corporation 1976, 1977, 1979