GROB

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|released=~1990
 
|released=~1990
 
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'''GROB''' is a raster graphics format associated with HP-48 and HP-49 series calculators.
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'''GROB''' is a bi-level raster graphics format associated with HP-48 and HP-49 series calculators.
  
There are at least two ways to encode a GROB image: "binary" and "ASCII". There may also be a third encoding called "text" or "ASC".
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There are two ways to encode a GROB image: "binary" and "ASCII". Sometimes, GROB images are also [[ASCII Encoded HP 48 Object|ASC-encoded]].
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== Format ==
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Binary format has an 18-byte header, followed by the pixel data.
  
 
== Identification ==
 
== Identification ==
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* [http://ftp.funet.fi/index/misc/hp48sx/graphics/grob.to.bitmap grob.to.bitmap]
 
* [http://ftp.funet.fi/index/misc/hp48sx/graphics/grob.to.bitmap grob.to.bitmap]
 
* [http://ftp.funet.fi/index/misc/hp48sx/graphics/grob2eps.c grob2eps.c]
 
* [http://ftp.funet.fi/index/misc/hp48sx/graphics/grob2eps.c grob2eps.c]
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* [http://homepage.univie.ac.at/Georg.Zotti/hp/index.html My HP48 and HP49 software] → [http://homepage.univie.ac.at/Georg.Zotti/hp/hp48-mf-0.6.zip hp48-mf-0.6.zip] → hp48.dtx → grob2eps.c
  
 
== Sample files ==
 
== Sample files ==

Revision as of 01:35, 5 August 2014

File Format
Name GROB
Ontology
Extension(s) .grb, .gro, others
Released ~1990

GROB is a bi-level raster graphics format associated with HP-48 and HP-49 series calculators.

There are two ways to encode a GROB image: "binary" and "ASCII". Sometimes, GROB images are also ASC-encoded.

Contents

Format

Binary format has an 18-byte header, followed by the pixel data.

Identification

A binary GROB file begins with "HPHP48" or "HPHP49", and has bytes 1E 2B at offset 8.

ASCII format apparently begins with "GROB "

Software

Sample files

Binary

ASCII

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