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File No. S360-36
GY28-2009-2




Program Logic




IBM System/360 Time Sharing System
System Logic Summary
Program Logic Manual

This publication describes the logic of the IBM
System/360 Tirre Sharing System (TSS/360). The emphasis
is on describing the interrelationship of system
components in ferforming systerr, functions. Where an
individual component is described, only the highest
level of logic is discussed.

This program logic manual is directed to the IB~
customer engineer who is responsible for program
maintenance. It can be used to determine the
interrelationshif among the various areas of the
system, and it enables the reader to relate these areas
to the corresfonding program logic manuals.
PREFACE




This Fublication is divided into three IEM System/360 Time Sharing System:
parts. The first Fart contains a Command System User's Guide, Form
systematic description of TSS/360. The C28-2001
second part explains various detailed
features of TSS/360 such as allocation
algorithms, sharing, and paging and gives IEM System/360 Time Sharing System:
examples of system operation. The third Asserrcler Programmer's Guide, Form
part discusses the relationship of language C28-2032
processors and auxiliary programs to the
system.
IBI"] System/360 Time Sharing System:
There are three appendixes. One relates J'iJanager's and Admini-strator's Guide,
major system components to the appropriate Form C28-2024
Program Logic Manual, the second contains a
summary of iIrfortant system control tlocks,
and the third is a directory listing all IEM Systerrif360 Time Sharing System:
modules for which flowcharts exist and the Assewc1.er Language, Form C28-2000
PLM which contains each flowchart.

PREREQUISI'IE PUBLICATIONS: IEM System/360 Time Sharing System:
Assembler User Macro Instructions,
IBM System/360 Time Sharing System: Form C28-2004
Concepts and Facilities, Form
C28-2003
IBM system/360 Time Sharing System: IBM
In addition, the following TSS/360 FORTRAN IV, Form C28-2007
publications can be used to supplement an
understanding of the interrelationships IBf.l System/360 Time Sharing Systerr,:
described in this manual: Linkage Editor, F~m C28-2005

IBM systen/360: Model 67 FUnctlonal IEt-l System/360 Time Sharing .