http://fileformats.archiveteam.org/index.php?action=history&feed=atom&title=LGLZ 2026-04-10T18:12:36Z Revision history for this page on the wiki MediaWiki 1.19.2 http://fileformats.archiveteam.org/index.php?title=LGLZ&diff=43226&oldid=prev 2022-09-09T16:22:16Z

<p>‎<span dir="auto"><span class="autocomment">Identification</span></span></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 16:22, 9 September 2022</td> </tr><tr><td colspan="2" class="diff-lineno">Line 25:</td> <td colspan="2" class="diff-lineno">Line 25:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Identification ==</div></td><td class='diff-marker'>&#160;</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><del class="diffchange diffchange-inline">EXE: LGLZ</del>-<del class="diffchange diffchange-inline">compressed EXE files are observed to have ASCII &quot;{{magic|LGL}}&quot; at offset 28</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">(Based on v1.04a</ins>-<ins class="diffchange diffchange-inline">e</ins>.<ins class="diffchange diffchange-inline">)</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</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>COM: <del class="diffchange diffchange-inline">''(TODO)''</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">EXE: Compressed EXE files are observed to have ASCII &quot;{{magic|LGL}}&quot; at offset 28.</ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>COM: <ins class="diffchange diffchange-inline">The 15 bytes starting at offset 3 always seem to be {{magic|3b fc 72 19 b4 09 ba 12 01 cd 21 b4 4c cd 21}}. Following that, at offset 18, is the ASCII string &quot;{{magic|Memory fault$}}&quot;.</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Software ==</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Software ==</div></td></tr> </table>

Jsummers http://fileformats.archiveteam.org/index.php?title=LGLZ&diff=42372&oldid=prev 2022-04-02T16:38:41Z

<p>Created page with &quot;{{FormatInfo |formattype=electronic |subcat=Compression |subcat2=Executable compression |released=1996 }} &#039;&#039;&#039;LGLZ&#039;&#039;&#039; is an executable compression utility for DOS, developed by...&quot;</p> <p><b>New page</b></p><div>{{FormatInfo<br /> |formattype=electronic<br /> |subcat=Compression<br /> |subcat2=Executable compression<br /> |released=1996<br /> }}<br /> '''LGLZ''' is an executable compression utility for DOS, developed by George Lyapko. It compresses [[MS-DOS EXE|EXE]] and [[DOS executable (.com)|COM]] formats.<br /> <br /> The software has a &lt;code&gt;-x&lt;/code&gt; option, to decompress a compressed file.<br /> <br /> == Format details ==<br /> LGLZ has some options that may significantly affect the compressed file, including:<br /> <br /> &lt;pre&gt;<br /> -0 - compression method 0<br /> -1 - compression method 1<br /> <br /> -f - Use the fast self-extracting module<br /> <br /> -u - Create a compressed file, which is unextractable<br /> (by this program)<br /> &lt;/pre&gt;<br /> <br /> The documentation mentions [[DIET (compression)|DIET]] as an inspiration. LGLZ's compressed files do seem to have some similarity to DIET's.<br /> <br /> == Identification ==<br /> EXE: LGLZ-compressed EXE files are observed to have ASCII &quot;{{magic|LGL}}&quot; at offset 28.<br /> <br /> COM: ''(TODO)''<br /> <br /> == Software ==<br /> * {{CdTextfiles|simtel/simtel0101/simtel/execomp/lglz104a.zip|LGLZ v1.04a}}<br /> * [{{SACFTPURL|pack|lglz104e.zip}} LGLZ v1.04e]<br /> <br /> == Links ==<br /> * [https://web.archive.org/web/20091026160652/http://geocities.com/SiliconValley/Lab/6606/utility.htm Archived copy of author's website, listing LGLZ]</div>

Jsummers