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  • BSI
    BS 6542-1:1984, ISO 7665:1983 File structure and labelling of flexible disk cartridges for information interchange - Specification for sequential file allocation structure
    Edition: 1984
    $435.35
    / user per year

Description of BS 6542-1:1984 1984

This International Standard specifies requirements for the file structure and the labelling of flexible disk cartridges for the interchange of information between users of different information processing systems.

This International Standard specifies

  1. recorded labels to identify files, file sections, and volumes of flexible disk cartridges;
  2. basic characteristics of the blocks containing the records constituting the file;
  3. the file structure.

This International Standard specifies three nested levels of interchange so that

  1. at the first level, called BASIC INTERCHANGE (BI), it is possible to interchange data by using a minimum set of the facilities provided;
  2. at the second level, called EXTENDED INTERCHANGE LEVEL 1 (E1), it is possible to interchange data using the minimum set together with blocks having a length greater than that of the physical records and with blocked fixed-length records;
  3. at the third level, called EXTENDED INTERCHANGE LEVEL 2 (E2), it is possible to interchange data using the facilities of levels BI and E1 together with variable-length records and segmented records.

Annex A describes examples but does not form part of this standard.

Annex B gives disk parameter values derived from flexible disk data interchange standards, but does not form part of this standard.



Requirements for the interchange of information between users of different information processing systems.

Standard NumberBS 6542-1:1984, ISO 7665:1983
TitleFile structure and labelling of flexible disk cartridges for information interchange - Specification for sequential file allocation structure
StatusUnder Review
Publication Date1984-10-31
Identical National Standard OfISO 7665:1983
DescriptorsData organization, Files, Data blocks, File organization (computers), Data media, Information transfer, Data transfer, Block formats, Information systems, Data layout, Sets of data, Information exchange, Magnetic disks, Tags (data processing), Flexible disks
ICS35.220.21 Magnetic disks
CommitteeICT/1
ISBN0 580 14110 1
PublisherBSI
Pages30

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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