IBM C24-3011-5 1440 IOCS Nov64 free download

File name C24-3011-5_1440_IOCS_Nov64.pdf

File Number 1440-30 Form C24-3011-5 Systems Reference Library Input/Output Control System Specifications IBM 1440 This publication presents the specifications for the IBM 1440 IOCS Program, Version 2. It describes the programming required to use laCS to control the input/output of data from card reader, card punch, printer, disk, and tape files. The laCS descriptive entries (DIOCS and DTF) and macro instructions are explained in detail. The types of processing and types of records handled by laCS are defined. The IBM 1440 laCS program is a supplement to the IBM 1401/1440/1460 Autocoder (on Disk) program. The reader should be familiar with the specifications for this program, described in the SRL publication, Autocoder (on Disk) Program Specifications and Operating Procedures, IBM 1401, 1440, and 1460, C24-3259. For a more complete understanding of the organization of records on disk, he should also review the disk file-organization routines. The SRL publication IBM 1440 Bibliography, Form A24-3005, lists publications available for other programming systems. MaioI' Ret;isior1, Not:ember 1964 This edition, C24-3011-5, is a major reVlSlon of and obsoletes the following previous editions and technical newsletters: C24-3011-2 1\24-0165 C24-3011-3 N24-0177 C24-3011-4 N24-0199 Changes consist of clarifications on pages 8, 22, 26, and 49 . ~. . 1962 and 1963 by International Business 'tvlachint's Corporation Copies of this and other IBM publications can be obtained through IBM Branch Offices. Address comments concerning the content of this publication to IB~I Product Publications, Endicott, l\e\v York 13764. Contents I ntrod uction 5 General Description 5 Autocoder Loader 6 Types of Processing - Disk Records 6 Types of Files - Card Records 7 Data Records 8 Disk Records and Storage Areas 8 Tape Records and Storage Areas 11 Unblocked Records 11 Blocked Records 13 Control Totals 14 Card and Printer Records and Stonige Areas 14 Record Input and Output 16 GET Macro 16 Tape Records and Disk Records with Consecutive Processing 16 Disk Records with Control-Sequential Processing 17 Disk Records with Random Processing 18 Carel Records 18 PUT Macro