AS 1068-1987

1 - AS 1068-1987 INFORMATION PROCESSING - FILE STRUCTURE AND LABELLING OF MAGNETIC TAPES FOR INFORMATION INTERCHANGE
4 - PREFACE
9 - 1 Scope and field of application
9 - 2 Conformance
9 - 2.1 Conformance of a magnetic tape volume set
9 - 2.2 Conformance of an information processing system
9 - 3 References
9 - 4 Definitions
9 - 4.1 application program:
10 - 4.2 block:
10 - 4.3 blocked:
10 - 4.4 byte:
10 - 4.5 file:
10 - 4.6 file section:
10 - 4.7 file set:
10 - 4.8 fixed-length record:
10 - 4.9 implementation:
10 - 4.10 installation:
10 - 4.11 label:
10 - 4.12 originating system:
10 - 4.13 originator:
10 - 4.14 receiving system:
10 - 4.15 recipient:
10 - 4.16 record:
10 - 4.17 segmented record:
10 - 4.18 International Standard for information interchange:
10 - 4.19 Tape Mark:
10 - 4.20 user:
10 - 4.21 variable-length record:
10 - 4.22 volume:
10 - 4.23 volume set:
10 - 5 Notation
10 - 6 Arrangement of labels and files
10 - 6.1 Arrangement of data on a volume
10 - 6.2 Arrangement of label groups
11 - 6.3 Arrangement of file sections
11 - 6.4 Relationship of file sections to a volume
11 - 6.5 Arrangement of files and file sets
12 - 6.6 Structure of a volume set
12 - 7 File structure for data interchange
12 - 7.1 Blocks
12 - 7.2 Records
13 - 7.3 Files
13 - 8 Format and contents of the labels and label sets
13 - 8.1 Character set and coding
13 - 8.2 Justification of characters
13 - 8.3 Volume Header Label Set (VOL1 to VOL9)
15 - 8.4 Installation Volume Label Set (UVL1 to UVL9)
15 - 8.5 File Header Label Set (HDR1 to HDR9)
17 - 8.6 User File Header Label Set (UHL)
18 - 8.7 End of Volume Label Set (EOV1 to EOV9)
19 - 8.8 End of File Label Set (EOF1 to EOF9)
20 - 8.9 User File Trailer Label Set (UTL)
20 - 9 Levels of interchange
20 - 9.1 Level 1
20 - 9.2 Level 2
20 - 9.3 Level 3
20 - 9.4 Level 4
20 - 10 Requirements for the description of systems
20 - 11 Requirements for an originating system
20 - 11.1 General
21 - 11.2 Files
21 - 11.3 Labels
21 - 11.4 Restrictions
22 - 12 Requirements for a receiving system
22 - 12.1 General
22 - 12.2 Files
22 - 12.3 Labels
22 - 12.4 Restrictions
23 - Annex A - IRV Code table from ISO 646
24 - Annex B - Initialized volumes
24 - B.1 Purpose
24 - B.2 Specification
25 - Annex C - Main differences between the first edition (1979) and the present (second) edition of this International Standard

Specifies: (a) file structure and the labelling of magnetic tapes for the interchange of information between users of information processing systems; (b) volume and file structure, basic characteristics of the blocks containing the records constituting the file, recoded labels for identifying files, file sections and volumes of magnetic tapes, four nested levels of interchange and (c) requirements for the processes which are provided within information processing systems, to enable information to be interchanged between different systems utilizing recorded magnetic tape as the medium of interchange. For this purpose the Standard specifies the functions to be provided within systems which are intended to originate or receive magnetic tape volumes which conform to this Standard.

This International Standard specifies the file structure and the labelling of magnetic tapes for the interchange of information between users of information processing systems.This International Standard also specifies- volume and file structure;- basic characteristics of the blocks containing the records constituting the file;- recorded labels for identifying files, file sections and volumes of magnetic tapes;- four nested levels of interchange.Furthermore, this International Standard specifies requirements for the processes which are provided within information processing systems, to enable information to be interchanged between different systems, utilizing recorded magnetic tape as the medium of interchange. For this purpose it specifies the functions to be provided within systems which are intended to originate or receive magnetic tape volumes which conform to this International Standard.