MGR bitmap

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File Format
Name MGR bitmap
Ontology
Extension(s) (none), .mgr
Released ~1984

MGR bitmap is an image file format associated with the ManaGeR (or MGR) windowing system.

Contents

Format

"Old format" files have a 6-byte header, and "modern format" files have an 8-byte header.

Identifiers

The MGR software does not appear to use any filename extension for this format, but some third-party software uses .mgr.

Identification

Files begin with a two-byte ASCII signature:

Signature Format
"yz" modern format, 8-bit aligned
"yx" modern format, squeezed
"xz" old format, 1-bit, 32-bit aligned
"zz" old format, 1-bit, 16-bit aligned
"zy" old format, 8-bit, 16-bit aligned
"xy" same as "zy"?

Specifications

Software

Sample files

Links

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