GEM VDI Metafile

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(Category:Atari graphics formats)
 
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== Identification ==
 
== Identification ==
Files begin with bytes <code>0xFF 0xFF</code>.
+
Files begin with bytes {{magic|0xFF 0xFF}}.
  
 
Following that is a two-byte integer reflecting the header size. It may use either big-endian or little-endian byte order. Likely values are <code>0x0018</code>, <code>0x000E</code>, and maybe <code>0x000F</code>.
 
Following that is a two-byte integer reflecting the header size. It may use either big-endian or little-endian byte order. Likely values are <code>0x0018</code>, <code>0x000E</code>, and maybe <code>0x000F</code>.
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== Specifications ==
 
== Specifications ==
 
* http://www.fileformat.info/format/gemvector/spec/index.htm
 
* http://www.fileformat.info/format/gemvector/spec/index.htm
* [http://archive.org/details/bitsavers_digitalResToolkit50472023101GEMProgrammersGuideVol_6900688 GEM Programmer's Guide Vol. 1], Appendix C
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* [https://archive.org/details/bitsavers_digitalResToolkit50472023101GEMProgrammersGuideVol_6900688 GEM Programmer's Guide Vol. 1], Appendix C
 
* [http://bitsavers.informatik.uni-stuttgart.de/pdf/digitalResearch/gem/Programmers_Toolkit/5074-2023_GEM_Virtual_Device_Interface_Reference_Guide_2.0_Jun86.pdf GEM VDI Reference Guide (v2.0)], Appendix B
 
* [http://bitsavers.informatik.uni-stuttgart.de/pdf/digitalResearch/gem/Programmers_Toolkit/5074-2023_GEM_Virtual_Device_Interface_Reference_Guide_2.0_Jun86.pdf GEM VDI Reference Guide (v2.0)], Appendix B
  
 
== Sample files ==
 
== Sample files ==
* http://cd.textfiles.com/bthevhell/300/234/
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* {{CdTextfilesURL|bthevhell/300/234/}}
 
* http://www.page6.org/st_lib/standard/st0393.php
 
* http://www.page6.org/st_lib/standard/st0393.php
* http://cd.textfiles.com/somuch/smsharew/CLIPART/GEMART2.ZIP
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* {{CdTextfilesURL|somuch/smsharew/CLIPART/GEMART2.ZIP}}
  
 
== See also ==
 
== See also ==
 
* [[GEM Raster]]
 
* [[GEM Raster]]
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* [[Ventura Publisher]]
  
 
== Links ==
 
== Links ==

Latest revision as of 19:42, 14 December 2019

File Format
Name GEM VDI Metafile
Ontology
Extension(s) .gem, .gdi
PRONOM fmt/543, fmt/542, x-fmt/215, x-fmt/57(?)
Released 1985

GEM VDI Metafile (also called GEM Metafile, GEM Vector, or GEM VDI) is a vector graphics metafile format associated with the GEM operating environment by Digital Research.

Contents

[edit] Identification

Files begin with bytes 0xFF 0xFF.

Following that is a two-byte integer reflecting the header size. It may use either big-endian or little-endian byte order. Likely values are 0x0018, 0x000E, and maybe 0x000F.

[edit] Specifications

[edit] Sample files

[edit] See also

[edit] Links

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