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Warning: Cannot modify header information - headers already sent in /usr/local/www/mediawiki/includes/WebResponse.php on line 38 http://fileformats.archiveteam.org/index.php?action=history&feed=atom&title=Compucolor_file_systemCompucolor file system - Revision history2024-06-12T12:53:54ZRevision history for this page on the wikiMediaWiki 1.19.2http://fileformats.archiveteam.org/index.php?title=Compucolor_file_system&diff=32630&oldid=prevDan Tobias: Created page with "{{FormatInfo |formattype=electronic |subcat=Filesystem |released=1978 }} The '''Compucolor file system''' was used on Compucolor II disks, a 5 1/4" floppy disk format. Som..."2019-07-14T14:11:24Z<p>Created page with "{{FormatInfo |formattype=electronic |subcat=Filesystem |released=1978 }} The '''Compucolor file system''' was used on <a href="/wiki/Compucolor_II_disk" title="Compucolor II disk">Compucolor II disks</a>, a 5 1/4" floppy disk format. Som..."</p>
<p><b>New page</b></p><div>{{FormatInfo<br />
|formattype=electronic<br />
|subcat=Filesystem<br />
|released=1978<br />
}}<br />
The '''Compucolor file system''' was used on [[Compucolor II disk]]s, a 5 1/4" floppy disk format. Some details of the format are documented in the "tech info" link below.<br />
<br />
The program code that handled the file system was burned into [[ROM]] on the CompuColor computer, so it was fixed in structure and unable to be upgraded without hardware replacement.<br />
<br />
Directory records started in sector 0 (sectors on the disk were numbered from 0 to 399), with the first directory sector containing the number of directory sectors (usually 3) and a disk volume label along with 5 directory entries; subsequent directory sectors had 6 directory entries. Filenames were 6 characters plus a 3 character extension/filetype. Sectors (directory and file content) were assigned sequentially, and file deletions required moving the remainder of the disk contents backward to preserve the contiguousness; this required memory buffering which used the display memory temporarily, causing odd screen displays while the operation was in progress. Saving a file multiple times resulted in multiple versions being saved, with sequential revision numbers.<br />
<br />
== Documentation ==<br />
* [http://www.compucolor.org/tech.html Compucolor tech info]<br />
* [http://oldcomputers.net/Compucolor-II-Maintenance-Manual.pdf Maintenance manual: has some technical info]<br />
* [http://hwcdn.libsyn.com/p/f/6/a/f6a6a4b982ed5bf8/24FloppyDays_2014_10_CompuColor_II.mp3?c_id=7705784&cs_id=7705784&destination_id=130236&expiration=1562739129&hwt=569547820ce5546973f753473357fce9 Podcast about CompuColor]<br />
<br />
[[Category:Compucolor computers]]</div>Dan Tobias Warning: require(): Unable to allocate memory for pool. in /usr/local/www/mediawiki/includes/AutoLoader.php on line 1007
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