Service Manuals, User Guides, Schematic Diagrams or docs for : IBM 360 os R21.0_Mar72 plm GY27-7236-1_MFT_Supervisor_Rel_21_PLM_Mar72

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                                                  File No. S360-36
                                                  GY27-7236-1




                                                Program Logic




OS Release 21




IBM System/360 Operating System
MPT Supervisor

Program Number 360S-CI-505


   This publication describes the internal logic of the
MFT Supervisor. The MFT supervisor is one part of the
control program of the IBM System/360 Operating System.
The publication provides an introduction to control
program logic and describes the supervisor components
of the program. Specifically, the publication
describes:
 Interruption Supervision
 Task Supervision
 Task Termination
 Contents Supervision
 Main Storage Supervision
 Communrcations Task
 Timer Supervision
 overlay Supervision
 Recording/Recovery Interfaces
 Checkpoint/Restart
 Device Independent Display Operator Console Support
   Program Logic Manuals are intended for use by per-
sons involved in program maintenance, and system pro-
grammers who are altering the program design. Program
logic information is not necessary for program use and
operation.
   Information in this publication applies only to sys-
tems capable of multiprogramming with a fixed number of
tasks CMFT).
Second Edition (l1arch, 1972)

This is a major reV1S1on of and makes obsolete GY28-
7236-0 and its associated TNL, GN27-136Q. This edition
corresponds to Release 21 of Systeml360 Operating Sys-
tem. It provides information concerning the Genera-
lized Trace Facility and Status Display Support; enhan-
cements and modifications to SYS1.LOGREC, RMS, DIDOCS,
OLTEP, and ABEND; and other improvements and correc-
tions to existing system features.
Release 20 added information concerning SVC DU~P, RMS
for the Models 165 and 155, Systeml370 Time-of-Day
Clock, and the Extended Precision Floating Point Decim-
al Simulator.
Significant changes or additions to the specifications
contained in this publication are continually being
made. When using this publication in connection with
the operation of IBM equipment, check the latest SRL
Newsletter for revisions or contact the local IBM
branch office.

This publication was prepared for production using an IBM computer to
update the text and to control the page and line format. Page impres-
sions for photo-offset printing were obtained from an IBM lQ03 Printer
using a special print train.
Copies of this and other IBM publications can be obtained through IBM
branch offices.
A form for reader's comments appears at the back of this publication.
Address any additional comments concerning the contents of this publica-
tion to IBM Corporation, Programming Publications, Department 636,
Neighborhood Road, Kingston, New York 12QOl

~   Copyright International Business Machines Corporation 1971, 1972
                                                                                    PREFACE



   This publication describes the MFT           

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