BS 6542-1:1984
Current
The latest, up-to-date edition.
File structure and labelling of flexible disk cartridges for information interchange Specification for sequential file allocation structure
Hardcopy , PDF
English
31-10-1984
Important note : Users cannot be edited or removed once added to your Multi user PDF.Requirements for the interchange of information between users of different information processing systems.
| Committee |
ICT/1
|
| DevelopmentNote |
Also numbered as ISO 7665 Supersedes 82/63296 DC (09/2005)
|
| DocumentType |
Standard
|
| Pages |
30
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
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
- recorded labels to identify files, file sections, and volumes of flexible disk cartridges;
- basic characteristics of the blocks containing the records constituting the file;
- the file structure.
This International Standard specifies three nested levels of interchange so that
- at the first level, called BASIC INTERCHANGE (BI), it is possible to interchange data by using a minimum set of the facilities provided;
- 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;
- 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.
| Standards | Relationship |
| ISO 7665:1983 | Identical |
| BS 6957-1(1988) : AMD 7322 | GUIDE TO CONSTRUCTION & USE OF 130MM(5.25IN) FLEXIBLE DISK CARTRIDGES FOR DATA INTERCHANGE, USING MODIFIED FREQUENCY MODULATION RECORDING AT 13262 ftprad, ON 80 TRACKS ON EACH SIDE - DIMENSIONAL, PHYSICAL AND MAGNETIC CHARACTERISTICS |
| BS 6957-2(1988) : AMD 7323 | |
| BS 6542-2:1988 | File structure and labelling of flexible disk cartridges for information interchange Specification for variable file allocation structure |
| BS 4730:1974 | Specification for the United Kingdom 7-bit data code (ISO-7-UK) |
| ISO 5654-1:1984 | Information processing Data interchange on 200 mm (8 in) flexible disk cartridges using two-frequency recording at 13 262 ftprad, 1,9 tpmm (48 tpi), on one side Part 1: Dimensional, physical and magnetic characteristics |
| BS 6006:1980 | Specification for United Kingdom 8-bit data code |
| ISO 5654-2:1985 | Information processing Data interchange on 200 mm (8 in) flexible disk cartridges using two- frequency recording at 13 262 ftprad, 1.9 tpmm (48 tpi), on one side Part 2: Track format |
| ISO/IEC 2022:1994 | Information technology Character code structure and extension techniques |
| BS 6542-2:1988 | File structure and labelling of flexible disk cartridges for information interchange Specification for variable file allocation structure |
| ISO/IEC 7487-1:1993 | Information technology Data interchange on 130 mm (5,25 in) flexible disk cartridges using modified frequency modulation recording at 7 958 ftprad, 1,9 tpmm (48 tpi), on both sides ISO type 202 Part 1: Dimensional, physical and magnetic characteristics |
| ISO 7065-1:1985 | Information processing Data interchange on 200 mm (8 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, 1,9 tpmm (48 tpi), on both sides Part 1: Dimensional, physical and magnetic characteristics |
| ISO/IEC 646:1991 | Information technology ISO 7-bit coded character set for information interchange |
| ECMA 78 : 1986 | DATA INTERCHANGE ON 130 MM FLEXIBLE DISK CARTRIDGES USING MFM RECORDING AT 7958 FTPRAD ON 80 TRACKS ON EACH SIDE |
| ISO 7065-2:1985 | Information processing Data interchange on 200 mm (8 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, 1,9 tpmm (48 tpi), on both sides Part 2: Track format |
| ISO 7487-2:1985 | Information processing Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 7 958 ftprad, 1,9 tpmm (48 tpi), on both sides Part 2: Track format A |
| ECMA 59 : 1979 | DATA INTERCHANGE ON 200 MM FLEXIBLE DISK CARTRIDGES USING TWO-FREQUENCY RECORDING AT 13262 FTPRAD ON BOTH SIDES |
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