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LGLZ - Just Solve the File Format Problem

LGLZ

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(Created page with "{{FormatInfo |formattype=electronic |subcat=Compression |subcat2=Executable compression |released=1996 }} '''LGLZ''' is an executable compression utility for DOS, developed by...")
 
(Identification)
 
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== Identification ==
 
== Identification ==
EXE: LGLZ-compressed EXE files are observed to have ASCII "{{magic|LGL}}" at offset 28.
+
(Based on v1.04a-e.)
  
COM: ''(TODO)''
+
EXE: Compressed EXE files are observed to have ASCII "{{magic|LGL}}" at offset 28.
 +
 
 +
COM: 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 "{{magic|Memory fault$}}".
  
 
== Software ==
 
== Software ==

Latest revision as of 16:22, 9 September 2022

File Format
Name LGLZ
Ontology
Released 1996

LGLZ is an executable compression utility for DOS, developed by George Lyapko. It compresses EXE and COM formats.

The software has a -x option, to decompress a compressed file.

Contents

[edit] Format details

LGLZ has some options that may significantly affect the compressed file, including:

  -0 - compression method 0
  -1 - compression method 1

  -f - Use the fast self-extracting module

  -u - Create a compressed file, which is unextractable
       (by this program)

The documentation mentions DIET as an inspiration. LGLZ's compressed files do seem to have some similarity to DIET's.

[edit] Identification

(Based on v1.04a-e.)

EXE: Compressed EXE files are observed to have ASCII "LGL" at offset 28.

COM: The 15 bytes starting at offset 3 always seem to be 3b fc 72 19 b4 09 ba 12 01 cd 21 b4 4c cd 21. Following that, at offset 18, is the ASCII string "Memory fault$".

[edit] Software

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