http://fileformats.archiveteam.org/index.php?action=history&feed=atom&title=AFX_%28Atari_ST%29AFX (Atari ST) - Revision history2026-04-09T02:24:20ZRevision history for this page on the wikiMediaWiki 1.19.2http://fileformats.archiveteam.org/index.php?title=AFX_(Atari_ST)&diff=51432&oldid=prevSembiance: /* Software */2026-01-27T14:30:29Z<p><span dir="auto"><span class="autocomment">Software</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Software ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Software ==</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;">* {{Deark}}</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* LHarc for Atari ST - v2.01X by Thomas Quester</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* LHarc for Atari ST - v2.01X by Thomas Quester</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>** 2.01d German: {{CdTextfiles|ataricompendium/FILES/UMICH/TEX/CS-TEX-4.0/CSTEX4-2.ZOO|CSTEX4-2.ZOO}} → lzh.lzh → LHARC/LHARC.TTP</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>** 2.01d German: {{CdTextfiles|ataricompendium/FILES/UMICH/TEX/CS-TEX-4.0/CSTEX4-2.ZOO|CSTEX4-2.ZOO}} → lzh.lzh → LHARC/LHARC.TTP</div></td></tr>
</table>Sembiancehttp://fileformats.archiveteam.org/index.php?title=AFX_(Atari_ST)&diff=51431&oldid=prevSembiance: /* Sample files */2026-01-27T14:30:06Z<p><span dir="auto"><span class="autocomment">Sample files</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Sample files ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Sample files ==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* {{DiscMasterLink|search?format&#x3d;afxCompressedData|DiscMaster search}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* {{DiscMasterLink|search?format&#x3d;afxCompressedData|DiscMaster search}}</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;">* {{DexvertSamples|archive/afxCompressedData}}</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>Sembiancehttp://fileformats.archiveteam.org/index.php?title=AFX_(Atari_ST)&diff=51411&oldid=prevJsummers at 16:48, 15 January 20262026-01-15T16:48:57Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>'''AFX''' (Automatic File eXtractor) is a transparent file compression utility for Atari ST. It was developed primarily by Thomas Quester. Much of the information about it is in German.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>'''AFX''' (Automatic File eXtractor) is a transparent file compression utility for Atari ST. It was developed primarily by Thomas Quester. Much of the information about it is in German.</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>Its native compressed file format is <del class="diffchange diffchange-inline">related to </del>[[LHA|LHarc]] format. <del class="diffchange diffchange-inline">It's apparently a single-file format. </del>Some of the Atari ST versions of LHarc can create AFX-compressed files.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Its native compressed file format is <ins class="diffchange diffchange-inline">a single-file variant of </ins>[[LHA|LHarc]] format.</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">== Discussion ==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Some of the Atari ST versions of LHarc can create <ins class="diffchange diffchange-inline">and decompress </ins>AFX-compressed files<ins class="diffchange diffchange-inline">. Specifically:</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 class="diffchange diffchange-inline">* At least versions 2.01d and later by Quester. (The "c" command exists in v2.01d, though it's not in the "usage" message.)</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 class="diffchange diffchange-inline">* The LHarc software by Grunenberg and Mandel, and later Haun. Seems to be the successor to Quester's LHarc.</ins></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 class="diffchange diffchange-inline">== Format details ==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">=== Compression ===</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 class="diffchange diffchange-inline">The compression method is [[LZSS (Haruhiko Okumura)|Okumura's LZSS]]. It is evidently the same as the <code>-lz5-</code> method from [[LArc]], except that the history buffer is initialized differently -- with LZSS's standard 4096-18 spaces, instead of <code>lz5</code>'s special pattern. Whether the initialization makes any difference is unknown.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">=== CRC issue ===</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 class="diffchange diffchange-inline">A number of AFX files found in the wild seem to have an incorrect CRC stored in the file. The cause of this problem is unknown. At least some of them seem to decompress correctly, if the CRC is ignored. That the CRC is incorrect is confirmed by the "test" or "extract" function of Quester's LHarc</ins>.</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>== Identification ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Identification ==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>ASCII "{{magic|-afx-}}" appears at offset 2.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>ASCII "{{magic|-afx-}}" appears at offset 2<ins class="diffchange diffchange-inline">. The byte at offset 20 (the LHA "header level") is evidently always 0</ins>.</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>== Software ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Software ==</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://websites</del>.<del class="diffchange diffchange-inline">umich</del>.<del class="diffchange diffchange-inline">edu</del>/<del class="diffchange diffchange-inline">~archive</del>/<del class="diffchange diffchange-inline">atari</del>/<del class="diffchange diffchange-inline">Archivers</del>/<del class="diffchange diffchange-inline">lzh_201l</del>.lzh <del class="diffchange diffchange-inline">lzh_201l</del>.lzh<del class="diffchange diffchange-inline">] - Includes LHarc and AFX</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>* <ins class="diffchange diffchange-inline">LHarc for Atari ST - v2</ins>.<ins class="diffchange diffchange-inline">01X by Thomas Quester</ins></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</del>://<del class="diffchange diffchange-inline">websites</del>.<del class="diffchange diffchange-inline">umich</del>.<del class="diffchange diffchange-inline">edu</del>/<del class="diffchange diffchange-inline">~archive</del>/<del class="diffchange diffchange-inline">atari</del>/<del class="diffchange diffchange-inline">Archivers</del>/<del class="diffchange diffchange-inline">lzhsourc</del>.<del class="diffchange diffchange-inline">lzh lzhsourc</del>.<del class="diffchange diffchange-inline">lzh] </del>- Source code for "LHarc 2.01m (c)Yoshi, Quester, 1988-91"</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">** 2</ins>.<ins class="diffchange diffchange-inline">01d German: {{CdTextfiles|ataricompendium</ins>/<ins class="diffchange diffchange-inline">FILES</ins>/<ins class="diffchange diffchange-inline">UMICH</ins>/<ins class="diffchange diffchange-inline">TEX</ins>/<ins class="diffchange diffchange-inline">CS-TEX-4</ins>.<ins class="diffchange diffchange-inline">0/CSTEX4-2.ZOO|CSTEX4-2.ZOO}} → </ins>lzh.lzh <ins class="diffchange diffchange-inline">→ LHARC/LHARC.TTP</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 class="diffchange diffchange-inline">* 2.01L English</ins>: <ins class="diffchange diffchange-inline">{{CdTextfiles|ataricompendium</ins>/<ins class="diffchange diffchange-inline">FILES</ins>/<ins class="diffchange diffchange-inline">COMPRESS/LZH201LE</ins>.<ins class="diffchange diffchange-inline">TTP|LZH201LE</ins>.<ins class="diffchange diffchange-inline">TTP}}</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 class="diffchange diffchange-inline">** {{CdTextfiles|ataricompendium</ins>/<ins class="diffchange diffchange-inline">FILES</ins>/<ins class="diffchange diffchange-inline">COMPRESS</ins>/<ins class="diffchange diffchange-inline">LZH_201L.LZH|LZH_201L.LZH}} - Includes LHarc and AFX</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 class="diffchange diffchange-inline">** {{CdTextfiles|ataricompendium</ins>/<ins class="diffchange diffchange-inline">FILES/COMPRESS/LZHSOURC</ins>.<ins class="diffchange diffchange-inline">LZH|LZHSOURC</ins>.<ins class="diffchange diffchange-inline">LZH}} </ins>- Source code for "LHarc 2.01m (c)Yoshi, Quester, 1988-91"<ins class="diffchange diffchange-inline">: </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 class="diffchange diffchange-inline">* LHarc for Atari ST - v2.20-3.xx by Grunenberg/Mandel(/Haun)</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 class="diffchange diffchange-inline">** v3.13a junior: [{{DiscMasterURL|browse/22127/STC_CD_01_1999.iso/stcd1098/anwend/lharc313}}]</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 class="diffchange diffchange-inline"><!-- TODO - Maybe the LHarc links should be moved to the LHA article. --></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">== Sample files ==</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 class="diffchange diffchange-inline">* {{DiscMasterLink|search?format&#x3d;afxCompressedData|DiscMaster search}}</ins></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>Jsummershttp://fileformats.archiveteam.org/index.php?title=AFX_(Atari_ST)&diff=42870&oldid=prevJsummers: Created page with "{{FormatInfo |formattype=electronic |subcat=Compression }} '''AFX''' (Automatic File eXtractor) is a transparent file compression utility for Atari ST. It was developed primar..."2022-06-25T22:01:42Z<p>Created page with "{{FormatInfo |formattype=electronic |subcat=Compression }} '''AFX''' (Automatic File eXtractor) is a transparent file compression utility for Atari ST. It was developed primar..."</p>
<p><b>New page</b></p><div>{{FormatInfo<br />
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'''AFX''' (Automatic File eXtractor) is a transparent file compression utility for Atari ST. It was developed primarily by Thomas Quester. Much of the information about it is in German.<br />
<br />
Its native compressed file format is related to [[LHA|LHarc]] format. It's apparently a single-file format. Some of the Atari ST versions of LHarc can create AFX-compressed files.<br />
<br />
== Identification ==<br />
ASCII "{{magic|-afx-}}" appears at offset 2.<br />
<br />
== Software ==<br />
* [http://websites.umich.edu/~archive/atari/Archivers/lzh_201l.lzh lzh_201l.lzh] - Includes LHarc and AFX<br />
* [http://websites.umich.edu/~archive/atari/Archivers/lzhsourc.lzh lzhsourc.lzh] - Source code for "LHarc 2.01m (c)Yoshi, Quester, 1988-91"<br />
<br />
== Links ==<br />
* {{AtariForumWiki|AFX|AtariForumWiki: AFX}}<br />
<br />
[[Category:Atari computers]]</div>Jsummers