AS 2414-1980

1 - AS 2414-1980 INFORMATION PROCESSING - MAGNETIC TAPE CASSETTE AND CARTRIDGE LABELLING AND FILE STRUCTURE FOR INFORMATION INTER
4 - PREFACE
5 - CONTENTS
6 - 0 INTRODUCTION 1 SCOPE AND FIELD OF APPLICATION
6 - 1 SCOPE AND FIELD OF APPLICATION
6 - 2 REFERENCES
7 - 3 DEFINITIONS
8 - 4 BASIC SYSTEM
8 - 4.1 Introduction
8 - 4.2 Use of tape marks
8 - 4.3 Structuring the files
8 - 4.4 Coincidence of end of file and intermediate start of track
8 - 4.5 Coincidence of end of file and intermediate end of track
9 - 4.6 End of available space
9 - 4.7 Recording density
9 - 4.8 By-pass or check-point records
10 - 5 COMPACT SYSTEM
10 - 5.1 Introduction
10 - 5.2 Use of tape marks
10 - 5.3 Formats and contents of labels
11 - 5.4 Processing of label fields
11 - 5.5 Structuring the files
13 - 5.6 Recording density
13 - 5.7 By-pass or check-point records
14 - 6 EXTENDED SYSTEM
14 - 6.1 Introduction
14 - 6.2 Use of tape marks
14 - 6.3 Formats and contents of labels
15 - 6.4 Processing of label fields
15 - 6.5 Structuring the files
16 - 6.6 Use of optional labels
16 - 6.7 Recording density
16 - 6.8 By-pass or check-point records

Specifies a 3-level labelling system for labelling magnetic tape cassettes and cartridges. The three levels, which are of increasing complexity, allow for a wide range of equipment to be accommodated. Technically identical with ISO 4341.

This International Standard specifies file structures for data interchange on magnetic tape cassettes.To provide for the range of sophistication in equipment and applications, three systems are specified:a) the basic system, employing only hardware-defined separators to structure the files;b) the compact system, employing special data blocks with information content (labels), which are capable of being recorded using only numeric equipment;c) the extended system, employing the magnetic tape labelling system specified in ISO 1001 together with new labels, to define a more comprehensive labelling system.This International Standard is not limited to the 3,81 mm magnetic tape cassette described in ISO 3407 but could also be applied to higher capacity cassettes or cartridges.

Reconfirmed 1989