MGR bitmap

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(Created page with "{{FormatInfo |formattype=electronic |subcat=Graphics |released=~1984 }} == Overview == '''MGR bitmap''' is an image file format associated with the '''ManaGeR''' (or '''MGR'''...")
 
(Sample files)
 
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|formattype=electronic
 
|formattype=electronic
 
|subcat=Graphics
 
|subcat=Graphics
 +
|extensions={{noext}}, {{ext|mgr}}
 
|released=~1984
 
|released=~1984
 
}}
 
}}
== Overview ==
 
 
'''MGR bitmap''' is an image file format associated with the '''ManaGeR''' (or '''MGR''') windowing system.
 
'''MGR bitmap''' is an image file format associated with the '''ManaGeR''' (or '''MGR''') windowing system.
  
== Identification ==
+
== Format ==
Apparently, MGR bitmap files do not conventionally have a filename extension.
+
"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:
 
Files begin with a two-byte ASCII signature:
 +
{| class="wikitable"
 +
! 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"?
 +
|}
  
"yz" = modern format, 8-bit aligned
+
== Specifications ==
"yx" = modern format, squeezed
+
* [ftp://sunsite.unc.edu/pub/linux/apps/MGR/mgrsrc-0.69.tgz MGR source code] → src/libbitblit/bitmap/bitmap.5
"xz" = old format, 1-bit, 32-bit aligned
+
"zz" = old format, 1-bit, 16-bit aligned
+
"zy" = old format, 8-bit, 16-bit aligned
+
  
 
== Software ==
 
== Software ==
* [http://netpbm.sourceforge.net/ Netpbm]: mgrtopbm, pbmtomgr
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* [[Konvertor]]
 +
* [[Netpbm]]: mgrtopbm, pbmtomgr
 +
* [[XnView]]
 
* [ftp://sunsite.unc.edu/pub/linux/apps/MGR/mgrsrc-0.69.tgz MGR source code]
 
* [ftp://sunsite.unc.edu/pub/linux/apps/MGR/mgrsrc-0.69.tgz MGR source code]
  
 
== Sample files ==
 
== Sample files ==
 
* ftp://sunsite.unc.edu/pub/linux/apps/MGR/mgrusr-0.69.tgz → icons/*
 
* ftp://sunsite.unc.edu/pub/linux/apps/MGR/mgrusr-0.69.tgz → icons/*
 +
* {{DexvertSamples|image/mgr}}
  
 
== Links ==
 
== Links ==
* [[Wikipedia:ManaGeR|Wikipedia: ManaGeR]]
+
* [[Wikipedia: ManaGeR]]
 +
 
 +
[[Category:Sun]]

Latest revision as of 15:15, 28 December 2023

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

[edit] Format

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

[edit] Identifiers

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

[edit] 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"?

[edit] Specifications

[edit] Software

[edit] Sample files

[edit] Links

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