IBM GY24-5088-4 DOS LIOCS Volume 3 SAM and DAM for DASD Apr71 free download

File name GY24-5088-4_DOS_LIOCS_Volume_3_SAM_and_DAM_for_DASD_Apr71.pdf

File Number S360-30 (DOS) Order No. GY24-5088-4 Program Logic DOS LIOeS Volume 3 SAM and DAM for DASD Program Numbers SDMOD 360N-IO-455 DAMOD 360N-IO-454 This reference publication is one of four Program Logic Manuals that describe the internal logic of the Logical IOCS (Input/Output Control system) programs for the IBM system/360 Disk operating System. The four related Program Logic Manuals are listed below. Note: Although titles of some DOS publications have been simplified, the change does not affect the contents of the publications. ; Volume 1: Introduction, GY24-5020. Volume 2: Unit Record l Magnetic TaEe l and Device IndeEendent Files, GY24-5087. Volume 3: SAM and DAM for DASD, GY24-5088. Volume 4: ISFMS GY24-5089. This manual is intended for use by persons involved in program maintenance and by system programmers who are altering the program design. Program logic information is not necessary for the operation of the programs described~ Therefore, distribution is limited to those with maintenance and alteration responsibi1ities. Effective use of this publication requires an understanding of IBM System/360 operation and the Disk Operating System Assembler language and its associated macro definition language. Reference publications for this information are listed in the Preface. For the titles and abstracts of other related publications, refer to the IBM system/360 and system/370 BiblioqraEhy, GA22-6822. DOS Release 25 Fifth Edition (April 1971) This publication was formerly titled IBM System/360 Disk operating System Loqical IOCS Volume 3: Sequential and Direct Access DASD Files. Although titles of some,DOS publications (including this one) have been simplified, the' change does not affect the contents of the publications. This edition applies to Release 25 of IBM System/360 Disk operating system and to all subsequent releases until otherwise indicated in new editions or Technical Newsletters. Changes are continua~lymade 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. This edition is a major revision of, and obsoletes, GY24-5088-3 and Technical Newsletter GN24-5421. summary of Amendments The changes to this manual reflect the program modifications concerning data set security and improved forced end of volume for disk. support is also included for the IBM 2319 Disk storage Facility. The flowchart symbols used in this manual conform wi'th the American National Standards Institute, Inc. flowcharting standards. See Appendix F for an explanation of the symbols. Miscellaneous maintenance changes are also included. ' Changes to the text and illustrations are indicated by a vertical line to the left of the change. Req