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Now downloading free:IBM Y27-7128-0 Control Program With Option 2 MFT PLM 1966

IBM Y27-7128-0 Control Program With Option 2 MFT PLM 1966 free download

Oscilloscopes, digital oscilloscopes, Tektronix oscilloscopes, cathode ray ocilloscopes, pc oscilloscopes service manuals and repair information

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Y21-1128-0 Program Logic IBM System/360 Operating System Control Program With Option 2 Program Numbers 360S-CI-505, 360S-DM-50B Multiprogramming with a fixed number of tasks is Option 2 of the control program for the IBM System/360 Operating System. This publication describes the internal logic of the control program to the extent that it is modified for Option 2. These modifications affect the job management, task management, and data management rou- tines of the control program. The Program Logic Manual is to be used with the. program assembly listings and is primarily a guide to those listings. It is intended for personnel involved in program maintenance and system programmers who are altering the system design. Program logic information is not necessary for the use and operation of the control program; therefore, distribution of this document is limited to those with the aforementioned requirements. Restricted Distribution PREFACE This publication describes the differen- This publication may be used to locate ces in internal logic that are introduced those areas of the system to be analyzed or by the expansion of the control program to modified. The information is presented to include option 2: multiprogramming with a enable the reader to relate Option 2 func- fixed number of tasks. It is assumed that tions to the program listings (coding) for the reader of this publication is thorough- those functions. The comments in the list- ly familiar with the basic operation of the ings provide information for thorough anal- control program. Only areas of difference ysis and understanding of the coding. are discussed in detail; however, informa- tion on sequential scheduling systems in general is included where necessary to assist the reader in relating ney topics to known characteristics of the system. PREREQUISITE PUBLICATIONS The manual is divided into four major sections. The first section, the Introduc- Knowledge of the information in the tion, outlines the function and organiza- following publications is required for a tion of the entire control program and full understanding of the manual. provides references to sources of informa- tion on various control program elements. The Theory of Operation section describes IBM System/360: Principles of Operation, control program flow, with emphasis on job Form A22-6821 management operations, which is the aspect IBM System/360: Operating System: Con- of the control program most significantly cepts and Facilities, Form C28-6535 different under option 2. The Program

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