IBM GC24-5037-12 DOS Supervisor and IO Macros Oct73 free download

File name GC24-5037-12_DOS_Supervisor_and_IO_Macros_Oct73.pdf

File Numbe'r S360-30 Order No. GC24-S037-12 DOS Systems Reference Library DOS Supervisor and liD Macros This reference publication is for the programmer planning to use the DOS Input/Output Control System macro instructions and supervisor communication macro instructions. These macro instructions can be combined with problem programs to produce generalized or specific file processing programs for a foreground or background environment. The major' subjects describe the macro system, label processing, multitasking macros, physical IOCS, supervisor communication macros, and sequential, direct, and indexed sequential access methods. Prerequisite information is contained in the following publications. Note: Although titles of some DOS publications have been simplified, the change does not affect the contents of the publications. DOS System Programmer's Guide, GC24-S073 DOS DASD Labels, GC24-S072 IBM System/360 Principles of Operation, GA22-6821 IBM System/360 Disk and Tape Operating Systems, Assembler Language, GC24-3414 DOS Data Management Concepts, GC24-3427 For titles and abstracts of other associated publications, see the IBM System/360 and System/370 Bibliography, GA22-6822. DOS Release 26.2 Thirteenth Edition (October, 1973) This is a reprint of GC24-5037-ll incorporating changes released in the following Technical Newsletters: GN33-8737 (January 1, 1973) GN33-8757 (July 13, 1973). This edition applies to Release 26.2 of the IBM Disk Operating System and to all subsequent releases until otherwise indicated in new editions or Technical Newsletters. Changes are continually made to the specifications herein; before using this publication in connection with the operation of IBM Systems, consult the latest System/360 and System/370 SRL Newsletter, GN20-0360, for the editions that are applicable and current. Requests for copies of IBM publications should be made to your IBM representative or to the IBM branch office serving your locality. Comments concerning the contents of this publication may be addressed to IBM Laboratory, Publications Department, P.O. Box 24, Uithoorn, The Netherlands. Comments become the property of IBM. e Copyright International Business Machines Corporation 1966, 1968, 1970, 1971 Preface This reference publication is a guide for the programmer planning to use the DOS Input/Output Control Systerr. rracro instructions and supervisor communication macro instructions. It describes the macros and their various operands. The publication has ten sections. The first two sections, Introduction and Macro Sys.!:~~" in troduce -concepts and terrri nology. The third section describes Label ~roc~~