D64

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{{FormatInfo
|[[Electronic File Formats]]
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|formattype=electronic
| >
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|subcat=Disk Image Formats
|[[Disk Image Formats]]
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|extensions={{ext|d64}}, {{ext|d71}}, {{ext|d81}}
| >
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}}
|[[D64]]
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|}
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==Overview==
 
==Overview==
The D64, D71 and D81 file formats (and some variants, like X64 and F64) are Commodore 64 sector-based disk images. They contain a fixed amount of 256 byte sectors, and, optionally, a table with one byte for each sector to contain error information. This was an early attempt at supporting some of the older copy protection schemes which relied on CBM DOS returning some error code when trying to read a certain sector on disk
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The '''D64''', '''D71''', and '''D81''' file formats (and some variants, like X64 and F64) are Commodore 64 sector-based disk images. They contain a fixed amount of 256 byte sectors, and, optionally, a table with one byte for each sector to contain error information. This was an early attempt at supporting some of the older [[copy protection]] schemes which relied on CBM DOS returning some error code when trying to read a certain sector on disk. [[G64]] was a "raw" format able to handle more copy-protected disks.
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==See also==
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* [[Commodore 1541 disk]]
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* [[Commodore 1571 disk]]
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* [[Commodore 1581 disk]]
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* [[CBMFS]]
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== Software ==
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* [http://style64.org/dirmaster DirMaster]: Reads C64 disk images / archives / files in Windows
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* [http://www.paradroid.net/diskimage/ diskimage.c]: A library to read/write D64 (and variant) image files
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* [http://www.zimmers.net/anonftp/pub/cbm/crossplatform/converters/unix/index.html cbmconvert] (<code>-d</code> option)
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* [[Konvertor]]
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* {{Deark}}
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== Sample files ==
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* ftp://ftp.cbm8bit.com/books_mags_disks-tapes/ ...
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* Many of the files at [http://csdb.dk/ the C-64 Scene Database]
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* https://telparia.com/fileFormatSamples/archive/commodoreDiskImage/
  
 
==Resources==
 
==Resources==
* A library to read/write D64 (and variant) image files [http://www.paradroid.net/diskimage/ here]
 
 
* Lots of C64 disk image documentation [http://ist.uwaterloo.ca/~schepers/formats.html here] (e.g. [http://ist.uwaterloo.ca/~schepers/formats/D64.TXT D64], [http://ist.uwaterloo.ca/~schepers/formats/D71.TXT D71], [http://ist.uwaterloo.ca/~schepers/formats/D81.TXT D81], [http://ist.uwaterloo.ca/~schepers/formats/G64.TXT G64])
 
* Lots of C64 disk image documentation [http://ist.uwaterloo.ca/~schepers/formats.html here] (e.g. [http://ist.uwaterloo.ca/~schepers/formats/D64.TXT D64], [http://ist.uwaterloo.ca/~schepers/formats/D71.TXT D71], [http://ist.uwaterloo.ca/~schepers/formats/D81.TXT D81], [http://ist.uwaterloo.ca/~schepers/formats/G64.TXT G64])
 
* Documentation with some code snippets [http://unusedino.de/ec64/technical/formats/disk.html here]
 
* Documentation with some code snippets [http://unusedino.de/ec64/technical/formats/disk.html here]
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[[Category:Commodore computers]]

Revision as of 19:00, 6 August 2020

File Format
Name D64
Ontology
Extension(s) .d64, .d71, .d81

Contents

Overview

The D64, D71, and D81 file formats (and some variants, like X64 and F64) are Commodore 64 sector-based disk images. They contain a fixed amount of 256 byte sectors, and, optionally, a table with one byte for each sector to contain error information. This was an early attempt at supporting some of the older copy protection schemes which relied on CBM DOS returning some error code when trying to read a certain sector on disk. G64 was a "raw" format able to handle more copy-protected disks.

See also

Software

Sample files

Resources

  • Lots of C64 disk image documentation here (e.g. D64, D71, D81, G64)
  • Documentation with some code snippets here
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Namespaces

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