IBM GY28-2041-4 Time Sharing System Task Monitor PLM Sep71 free download

File name GY28-2041-4_Time_Sharing_System_Task_Monitor_PLM_Sep71.pdf

File No. 8360-36 GY28-2041-4 Program Logic Version 8.1 IBM System/360 Time Sharing System Task Monitor This publication describes the internal logic of the group of routines that make up the task monitor. The task monitor deals with the reception and control of those interruptions that directly concern the user of the system. It resides in virtual memory and is com- posed of ten modules. Program logic manuals are directed to systems engineers and programmers who require descriptions of the internal logic of a system. Together with program listings, they can be used to examine specific areas of program logic for purposes of maintaining or altering the system. PREFACE The task monitor resides in virtual PREREQUISITE PUBLICATIONS storage and directs the processing of task- oriented interruptions. This book attempts IBM System/360 Principles of Operation, to make clear the internal logic of the GA22-6821 group of routines which comprise the task IBM System/360 Time Sharing System: monitor. System Logic Summary, GY28-2009 For more information about interruption There are five sections in this manual. handling macro instructions, SVC codes, Section 1, the introduction, provides back- linkages, time sharing support and virtual ground information essential to an under- support systems, and system control blocks, standing of task monitor processing. Sec- see: tion 2, Method of operation, contains a general overview of that processing. From IBM System/360 Time Sharing System: this section the reader should be able to Assembler User Macro Instructions, gain an understanding of how the task mon- GC28-2004 itor accomplishes its objectives. Section Resident SupervisorPLM, GY28-2012 3 describes program organization. It con- System Programmer's Guide, GC28-2008 sists of flowcharts and detail.ed routine Time Sharing Support System, descriptions. Section 4, Data Areas, con- GC28-2006 tains a brief description of the control System Control Blocks PLM, GY28-2011 blocks used by the task monitor, and how they are used. Section 5, Diagnostic Aids, contains helpful information for the cus- tomer engineer; for example, a microfiche directory and layouts of the task monitor's enter tables and log. Fourth Edition (September 1971) This is a major revision of, and makes obsolete GY28- 2041-). This edition should be r