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- Disc_Filing_System abstract "The Disc Filing System (DFS) is a computer file system developed by Acorn Computers, initially as an add-on to the Eurocard-based Acorn System 2.In 1981, the Education Departments of Western Australia and South Australia announced joint tenders calling for the supply of personal computers to their schools. Acorn's Australian computer distributor, Barson Computers, convinced Joint Managing Directors Hermann Hauser and Chris Curry to allow the soon to be released Acorn BBC Microcomputer to be offered with disk storage as part of the bundle. They agreed on condition that Barson adapted the Acorn DFS from the System 2 without assistance from Acorn as they had no resources available. This required some minor hardware and software changes to make the DFS compatible with the BBC Micro.Barson won the tenders for both states, with the DFS fitted, a year ahead of the UK. It was this early initiative that resulted in the BBC Micro being more heavily focused on the education market in Australia, with very little penetration of the home computer market until the arrival of the Acorn Electron.The DFS shipped as a ROM and Disk Controller Chip fitted to the BBC Micro's motherboard. The filing system was of extremely limited functionality and storage capability, using a flat directory structure. Each filename can be up to seven letters long, plus one letter for the directory in which the file is stored.The DFS is remarkable in that unlike most filing systems, there was no single vendor or implementation. The original DFS was written by Acorn, who continued to maintain their own codebase, but various disc drive vendors wrote their own implementations. Companies who wrote their own DFS implementations included Cumana, Opus and Watford Electronics. The Watford Electronics implementation is notable for supporting 62 files per disc instead of the usual 31, using a non-standard disc format. Other features in third-party implementations included being able to review free space, and built-in FORMAT and VERIFY commands, which were shipped on a utility disc with the original Acorn DFS.Acorn followed up their original DFS series with the Acorn 1770 DFS, which used the same disc format as the earlier version but added a set of extra commands and supported the improved WD1770 floppy drive controller chip.".
- Disc_Filing_System wikiPageExternalLink DFS.
- Disc_Filing_System wikiPageExternalLink DFS.rtf.
- Disc_Filing_System wikiPageExternalLink WatfordDFS.txt.
- Disc_Filing_System wikiPageID "1702003".
- Disc_Filing_System wikiPageLength "18984".
- Disc_Filing_System wikiPageOutDegree "39".
- Disc_Filing_System wikiPageRevisionID "703332806".
- Disc_Filing_System wikiPageWikiLink ASCII.
- Disc_Filing_System wikiPageWikiLink Acorn_Computers.
- Disc_Filing_System wikiPageWikiLink Acorn_Electron.
- Disc_Filing_System wikiPageWikiLink Acorn_Eurocard_systems.
- Disc_Filing_System wikiPageWikiLink Acorn_MOS.
- Disc_Filing_System wikiPageWikiLink Acorn_User.
- Disc_Filing_System wikiPageWikiLink Advanced_Disc_Filing_System.
- Disc_Filing_System wikiPageWikiLink BBC_BASIC.
- Disc_Filing_System wikiPageWikiLink BBC_Master.
- Disc_Filing_System wikiPageWikiLink BBC_Micro.
- Disc_Filing_System wikiPageWikiLink Category:Acorn_Computers.
- Disc_Filing_System wikiPageWikiLink Category:Disk_file_systems.
- Disc_Filing_System wikiPageWikiLink Christopher_Curry.
- Disc_Filing_System wikiPageWikiLink Control_character.
- Disc_Filing_System wikiPageWikiLink Escape_character.
- Disc_Filing_System wikiPageWikiLink File_system.
- Disc_Filing_System wikiPageWikiLink File_system_fragmentation.
- Disc_Filing_System wikiPageWikiLink Floppy_disk.
- Disc_Filing_System wikiPageWikiLink Floppy_disk_variants.
- Disc_Filing_System wikiPageWikiLink Fragmentation_(computing).
- Disc_Filing_System wikiPageWikiLink Frequency_modulation.
- Disc_Filing_System wikiPageWikiLink Hermann_Hauser.
- Disc_Filing_System wikiPageWikiLink IBM_Personal_Computer.
- Disc_Filing_System wikiPageWikiLink Intel.
- Disc_Filing_System wikiPageWikiLink Kilobyte.
- Disc_Filing_System wikiPageWikiLink Macro_(computer_science).
- Disc_Filing_System wikiPageWikiLink Modified_Frequency_Modulation.
- Disc_Filing_System wikiPageWikiLink Operating_system.
- Disc_Filing_System wikiPageWikiLink PATH_(variable).
- Disc_Filing_System wikiPageWikiLink RISC_OS.
- Disc_Filing_System wikiPageWikiLink Read-only_memory.
- Disc_Filing_System wikiPageWikiLink Shell_script.
- Disc_Filing_System wikiPageWikiLink The_Micro_User.
- Disc_Filing_System wikiPageWikiLink Western_Digital_FD1771.
- Disc_Filing_System wikiPageWikiLink Working_directory.
- Disc_Filing_System wikiPageWikiLinkText "Acorn Disc Filing System".
- Disc_Filing_System wikiPageWikiLinkText "DFS".
- Disc_Filing_System wikiPageWikiLinkText "Disc Filing System".
- Disc_Filing_System wikiPageWikiLinkText "Disc_Filing_System".
- Disc_Filing_System attributes "Directory character, Load address, Execution address, Locked".
- Disc_Filing_System badBlocksStruct "None".
- Disc_Filing_System compression "No".
- Disc_Filing_System dateRange "N/A".
- Disc_Filing_System datesRecorded "None".
- Disc_Filing_System developer Acorn_Computers.
- Disc_Filing_System directoryStruct "Single catalogue of 31 fixed length records".
- Disc_Filing_System encryption "No".
- Disc_Filing_System fileStruct "Start-Length entries".
- Disc_Filing_System fileSystemPermissions "No".
- Disc_Filing_System filenameCharacterSet "ASCII".
- Disc_Filing_System forksStreams "No".
- Disc_Filing_System fullName "Disc Filing System".
- Disc_Filing_System introductionDate "1982".
- Disc_Filing_System introductionOs Acorn_MOS.
- Disc_Filing_System maxFileSize "255".
- Disc_Filing_System maxFilenameSize "7".
- Disc_Filing_System maxFilesNo "31".
- Disc_Filing_System maxVolumeSize "256".
- Disc_Filing_System name "DFS".
- Disc_Filing_System os Acorn_MOS.
- Disc_Filing_System partitionId "None".
- Disc_Filing_System wikiPageUsesTemplate Template:BBC_Computer_Literacy_Project.
- Disc_Filing_System wikiPageUsesTemplate Template:Filesystem.
- Disc_Filing_System wikiPageUsesTemplate Template:Infobox_filesystem.
- Disc_Filing_System wikiPageUsesTemplate Template:Refimprove.
- Disc_Filing_System wikiPageUsesTemplate Template:Reflist.
- Disc_Filing_System subject Category:Acorn_Computers.
- Disc_Filing_System subject Category:Disk_file_systems.
- Disc_Filing_System hypernym System.
- Disc_Filing_System type Company.
- Disc_Filing_System type Company.
- Disc_Filing_System type Computer.
- Disc_Filing_System comment "The Disc Filing System (DFS) is a computer file system developed by Acorn Computers, initially as an add-on to the Eurocard-based Acorn System 2.In 1981, the Education Departments of Western Australia and South Australia announced joint tenders calling for the supply of personal computers to their schools.".
- Disc_Filing_System label "Disc Filing System".
- Disc_Filing_System sameAs Q5281381.
- Disc_Filing_System sameAs m.05plkk.
- Disc_Filing_System sameAs Q5281381.
- Disc_Filing_System wasDerivedFrom Disc_Filing_System?oldid=703332806.
- Disc_Filing_System isPrimaryTopicOf Disc_Filing_System.