IBM GY28-6616-9 OS IO Superv PLM R21.7 Apr73 free download

File name GY28-6616-9_OS_IO_Superv_PLM_R21.7_Apr73.pdf

File Number S360-30 (OS) Order Number GY28-6616-9 Program Logic os I/O Supervisor Logic Release 21 Program Number 360S-CI-505 This publication describes the input/output supervisor, which consists of the control program routines that carryon input/output activity for the IBM Operating System. Input/output supervisor routines start, monitor, and, where necessary, restart activity on input/ output devices. Hollowing an introduction, there is a Method of Operation section in this publication which is organized to reflect the sequence of events that takes place when the input/output supervisor receives a request for input/output (I/O) activity: Validating Input Data Scheduling I/O Operations Starting I/O Operations Terminating I/O Operations Restarting I/O Operations Recording Error Data The remaining sections of this publication support the Method of Operation section, and include descriptions of program organization, directories for PLM-to-listing and listing-to-PLM transitions, descriptions of data areas, diagnostic aids, and appendixes. This manual is intended for persons involved in program maintenance, and system programmers who are altering the program design. Program logic information is not necessary for the use and operation of the program. Page of GY28-6616-9 Revised April 30, 1973 By TNL GN26-8036 Tenth Edition (February 1972) This edition, as amended by technical newsletter GN26-8036, applies to Release 7J'-:'z-0fthe Operating System (OS) and to all subsequent releases until otherwise indicated in new editions or technical newsletters. Information in this publication is subject to significant change. Any such changes will be published in new editions or technical newsletters. Before using the publication, consult the latest IBM System/360 and System/370 Bibliography, GA22-6822, and the technical newsletters that amend that bibliography, to learn which editions and technical newsletters are applicable and current. Requests for copies of IBM publications should be made to the IBM branch office that serves you. Forms for readers' comments are provided at the back of the publication. If the forms have been removed, comments may be addressed to IBM Corporation, Programming Center--Publishing, Department D58, Monterey and Cottle Roads, San Jose, California 95193. All comments become the property of IBM.