http://fileformats.archiveteam.org/index.php?title=Twiggy_floppy&feed=atom&action=historyTwiggy floppy - Revision history2024-03-28T13:47:09ZRevision history for this page on the wikiMediaWiki 1.19.2http://fileformats.archiveteam.org/index.php?title=Twiggy_floppy&diff=44032&oldid=prevDan Tobias: /* Links */2023-01-27T21:47:23Z<p><span dir="auto"><span class="autocomment">Links</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.1000bit.it/support/manuali/apple/lisa/LisaPatentTwiggy.pdf Apple patent on Twiggy drive]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.1000bit.it/support/manuali/apple/lisa/LisaPatentTwiggy.pdf Apple patent on Twiggy drive]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.cultofmac.com/143458/rare-128k-mac-prototype-surfaces-with-5-25-floppy-disk-drive/ Rare prototype Mac with Twiggy drive]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.cultofmac.com/143458/rare-128k-mac-prototype-surfaces-with-5-25-floppy-disk-drive/ Rare prototype Mac with Twiggy drive]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* [https://arstechnica.com/information-technology/2023/01/pioneering-apple-lisa-goes-open-source-thanks-to-computer-history-museum/ Lisa OS goes open source]</ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Apple]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Apple]]</div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Twiggy_floppy&diff=21684&oldid=prevVolodyA! V Anarhist: /* Links */ no reason to go through google2015-04-18T19:43:38Z<p><span dir="auto"><span class="autocomment">Links: </span> no reason to go through google</span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.brouhaha.com/~eric/retrocomputing/lisa/twiggy.html Info on Twiggy floppy]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.brouhaha.com/~eric/retrocomputing/lisa/twiggy.html Info on Twiggy floppy]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.folklore.org/StoryView.py?story=Hide_Under_This_Desk.txt Anecdotal story]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.folklore.org/StoryView.py?story=Hide_Under_This_Desk.txt Anecdotal story]</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>* [<del class="diffchange diffchange-inline">http://www.google.com/url?q=</del>http://www.1000bit.it/support/manuali/<del class="diffchange diffchange-inline">download</del>.<del class="diffchange diffchange-inline">asp%3Fid%3D678&sa=U&ei=PKBhUbLXKIL09gSn_YCICw&ved=0CEkQFjAO&usg=AFQjCNFr3t9HH98w_gWgy3s77jo7NGBKQQ </del>Apple patent on Twiggy drive]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>* [http://www.1000bit.it/support/manuali/<ins class="diffchange diffchange-inline">apple/lisa/LisaPatentTwiggy</ins>.<ins class="diffchange diffchange-inline">pdf </ins>Apple patent on Twiggy drive]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.cultofmac.com/143458/rare-128k-mac-prototype-surfaces-with-5-25-floppy-disk-drive/ Rare prototype Mac with Twiggy drive]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.cultofmac.com/143458/rare-128k-mac-prototype-surfaces-with-5-25-floppy-disk-drive/ Rare prototype Mac with Twiggy drive]</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Apple]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Apple]]</div></td></tr>
</table>VolodyA! V Anarhisthttp://fileformats.archiveteam.org/index.php?title=Twiggy_floppy&diff=13318&oldid=prevDan Tobias at 15:10, 14 September 20132013-09-14T15:10:53Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The Twiggy used media similar to the later [[PC-DOS 1.2M format|1.2 MB high-density disk format]] used on PCs, but with the casing holes arranged differently. It used a track pitch of 62.5 TPI, different from the common 48 and 96 TPI used in other formats. The drives were double-sided, and had a capacity of 871,424 bytes per disk. The speed varied from 218 to 320 RPM depending on which track was being read, allowing a near-constant amount of data per inch.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The Twiggy used media similar to the later [[PC-DOS 1.2M format|1.2 MB high-density disk format]] used on PCs, but with the casing holes arranged differently. It used a track pitch of 62.5 TPI, different from the common 48 and 96 TPI used in other formats. The drives were double-sided, and had a capacity of 871,424 bytes per disk. The speed varied from 218 to 320 RPM depending on which track was being read, allowing a near-constant amount of data per inch.</div></td></tr>
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<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>The disks had 1702 sectors storing 512 data bytes each (with 20 additional tag bytes per sector). Storage used [[GCR]] <del class="diffchange diffchange-inline">encoding</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>The disks had 1702 sectors storing 512 data bytes each (with 20 additional tag bytes per sector). Storage used [[GCR <ins class="diffchange diffchange-inline">encoding</ins>]].</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Links ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Links ==</div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Twiggy_floppy&diff=13317&oldid=prevDan Tobias at 15:10, 14 September 20132013-09-14T15:10:27Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The Twiggy used media similar to the later [[PC-DOS 1.2M format|1.2 MB high-density disk format]] used on PCs, but with the casing holes arranged differently. It used a track pitch of 62.5 TPI, different from the common 48 and 96 TPI used in other formats. The drives were double-sided, and had a capacity of 871,424 bytes per disk. The speed varied from 218 to 320 RPM depending on which track was being read, allowing a near-constant amount of data per inch.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The Twiggy used media similar to the later [[PC-DOS 1.2M format|1.2 MB high-density disk format]] used on PCs, but with the casing holes arranged differently. It used a track pitch of 62.5 TPI, different from the common 48 and 96 TPI used in other formats. The drives were double-sided, and had a capacity of 871,424 bytes per disk. The speed varied from 218 to 320 RPM depending on which track was being read, allowing a near-constant amount of data per inch.</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">The disks had 1702 sectors storing 512 data bytes each (with 20 additional tag bytes per sector). Storage used [[GCR]] encoding.</ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Links ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Links ==</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* [[Wikipedia:Apple FileWare|Wikipedia article]]</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.brouhaha.com/~eric/retrocomputing/lisa/twiggy.html Info on Twiggy floppy]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.brouhaha.com/~eric/retrocomputing/lisa/twiggy.html Info on Twiggy floppy]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.folklore.org/StoryView.py?story=Hide_Under_This_Desk.txt Anecdotal story]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.folklore.org/StoryView.py?story=Hide_Under_This_Desk.txt Anecdotal story]</div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Twiggy_floppy&diff=13316&oldid=prevDan Tobias at 15:04, 14 September 20132013-09-14T15:04:37Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The '''Twiggy floppy''' (officially FileWare) was a nonstandard variety of 5.25" floppy disk used on the Apple Lisa computer in the early 1980s. Apple originally had plans for release of drives for this format for the Apple II line and for the (then-upcoming) Macintosh, but ultimately went in the direction of 3.5" disks instead, leaving the Twiggy as an orphan format.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The '''Twiggy floppy''' (officially FileWare) was a nonstandard variety of 5.25" floppy disk used on the Apple Lisa computer in the early 1980s. Apple originally had plans for release of drives for this format for the Apple II line and for the (then-upcoming) Macintosh, but ultimately went in the direction of 3.5" disks instead, leaving the Twiggy as an orphan format.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>The Twiggy used media similar to the later 1.2 MB high-density disk format used on PCs, but with the casing holes arranged differently. It used a track pitch of 62.5 TPI, different from the common 48 and 96 TPI used in other formats. The drives were double-sided, and had a capacity of 871,424 bytes per disk. The speed varied from 218 to 320 RPM depending on which track was being read, allowing a near-constant amount of data per inch.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>The Twiggy used media similar to the later <ins class="diffchange diffchange-inline">[[PC-DOS 1.2M format|</ins>1.2 MB high-density disk format<ins class="diffchange diffchange-inline">]] </ins>used on PCs, but with the casing holes arranged differently. It used a track pitch of 62.5 TPI, different from the common 48 and 96 TPI used in other formats. The drives were double-sided, and had a capacity of 871,424 bytes per disk. The speed varied from 218 to 320 RPM depending on which track was being read, allowing a near-constant amount of data per inch.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Links ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Links ==</div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Twiggy_floppy&diff=11368&oldid=prevDan Tobias at 01:43, 4 May 20132013-05-04T01:43:16Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.google.com/url?q=http://www.1000bit.it/support/manuali/download.asp%3Fid%3D678&sa=U&ei=PKBhUbLXKIL09gSn_YCICw&ved=0CEkQFjAO&usg=AFQjCNFr3t9HH98w_gWgy3s77jo7NGBKQQ Apple patent on Twiggy drive]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.google.com/url?q=http://www.1000bit.it/support/manuali/download.asp%3Fid%3D678&sa=U&ei=PKBhUbLXKIL09gSn_YCICw&ved=0CEkQFjAO&usg=AFQjCNFr3t9HH98w_gWgy3s77jo7NGBKQQ Apple patent on Twiggy drive]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.cultofmac.com/143458/rare-128k-mac-prototype-surfaces-with-5-25-floppy-disk-drive/ Rare prototype Mac with Twiggy drive]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.cultofmac.com/143458/rare-128k-mac-prototype-surfaces-with-5-25-floppy-disk-drive/ Rare prototype Mac with Twiggy drive]</div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">[[Category:Apple]]</ins></div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Twiggy_floppy&diff=10860&oldid=prevDan Tobias at 17:33, 7 April 20132013-04-07T17:33:37Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|subcat=Floppy disk</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|subcat=Floppy disk</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">|released=1983</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>}}</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.folklore.org/StoryView.py?story=Hide_Under_This_Desk.txt Anecdotal story]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.folklore.org/StoryView.py?story=Hide_Under_This_Desk.txt Anecdotal story]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.google.com/url?q=http://www.1000bit.it/support/manuali/download.asp%3Fid%3D678&sa=U&ei=PKBhUbLXKIL09gSn_YCICw&ved=0CEkQFjAO&usg=AFQjCNFr3t9HH98w_gWgy3s77jo7NGBKQQ Apple patent on Twiggy drive]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.google.com/url?q=http://www.1000bit.it/support/manuali/download.asp%3Fid%3D678&sa=U&ei=PKBhUbLXKIL09gSn_YCICw&ved=0CEkQFjAO&usg=AFQjCNFr3t9HH98w_gWgy3s77jo7NGBKQQ Apple patent on Twiggy drive]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* [http://www.cultofmac.com/143458/rare-128k-mac-prototype-surfaces-with-5-25-floppy-disk-drive/ Rare prototype Mac with Twiggy drive]</ins></div></td></tr>
</table>Dan Tobiashttp://fileformats.archiveteam.org/index.php?title=Twiggy_floppy&diff=10859&oldid=prevDan Tobias: Created page with "{{FormatInfo |formattype=physical |subcat=Floppy disk }} The '''Twiggy floppy''' (officially FileWare) was a nonstandard variety of 5.25" floppy disk used on the Apple Lisa c..."2013-04-07T17:22:24Z<p>Created page with "{{FormatInfo |formattype=physical |subcat=Floppy disk }} The '''Twiggy floppy''' (officially FileWare) was a nonstandard variety of 5.25" floppy disk used on the Apple Lisa c..."</p>
<p><b>New page</b></p><div>{{FormatInfo<br />
|formattype=physical<br />
|subcat=Floppy disk<br />
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<br />
The '''Twiggy floppy''' (officially FileWare) was a nonstandard variety of 5.25" floppy disk used on the Apple Lisa computer in the early 1980s. Apple originally had plans for release of drives for this format for the Apple II line and for the (then-upcoming) Macintosh, but ultimately went in the direction of 3.5" disks instead, leaving the Twiggy as an orphan format.<br />
<br />
The Twiggy used media similar to the later 1.2 MB high-density disk format used on PCs, but with the casing holes arranged differently. It used a track pitch of 62.5 TPI, different from the common 48 and 96 TPI used in other formats. The drives were double-sided, and had a capacity of 871,424 bytes per disk. The speed varied from 218 to 320 RPM depending on which track was being read, allowing a near-constant amount of data per inch.<br />
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== Links ==<br />
* [http://www.brouhaha.com/~eric/retrocomputing/lisa/twiggy.html Info on Twiggy floppy]<br />
* [http://www.folklore.org/StoryView.py?story=Hide_Under_This_Desk.txt Anecdotal story]<br />
* [http://www.google.com/url?q=http://www.1000bit.it/support/manuali/download.asp%3Fid%3D678&sa=U&ei=PKBhUbLXKIL09gSn_YCICw&ved=0CEkQFjAO&usg=AFQjCNFr3t9HH98w_gWgy3s77jo7NGBKQQ Apple patent on Twiggy drive]</div>Dan Tobias