GROB
From Just Solve the File Format Problem
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| − | '''GROB''' is a raster graphics format associated with HP-48 and HP-49 series calculators. | + | '''GROB''' is a bi-level raster graphics format associated with HP-48 and HP-49 series calculators. |
| − | There are | + | There are two ways to encode a GROB image: "binary" and "ASCII". Sometimes, GROB images are also [[ASCII Encoded HP 48 Object|ASC-encoded]]. |
| + | |||
| + | == Format == | ||
| + | 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] | ||
| + | * [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
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
- XnView
- grob.to.bitmap
- grob2eps.c
- My HP48 and HP49 software → hp48-mf-0.6.zip → hp48.dtx → grob2eps.c
