Genus Graphics Library

File Format
Name	Genus Graphics Library
Ontology	Electronic File Formats Archiving Genus Graphics Library
Extension(s)	.gx, .gxl, others

Genus Graphics Library (sometimes called GXLib, or similar) is an archive format created by Genus Microprogramming Inc.

See also PCX Library.

Format details

The format allows for the possibility of compression, but it's not clear if any standard compression methods have ever been defined.

Identification

Files begin with bytes 0x01 0xca, and have 64 00 at offset 52.

The two-byte integer at offset 94 is the number of archive members. If it is nonzero, then the byte at offset 128 is the compression method of the first member, which is normally 0.

There's a copyright string at offset 2 that usually, but not always, starts with "Copyright (c) Genus Microprogramming, Inc. 1988".

Software

• unpcxgx
• Deark

Sample files

• dexvert samples — archive/gxlib

• Examples of files with a different copyright string:
  • AQUEST1.ZIP → *.GGL
  • EGAPITD3.ZIP → *.EGA

• QWIZTEST.ZIP → GVI.CMP and some other files - Needs investigation. Apparently an incompatible variant of this format.

Links

• GX Library, at ModdingWiki