TI picture file

TI picture file is a family of bi-level raster image formats used with Texas Instruments calculators. A picture file is a kind of TI variable file that contains a variable of type "picture".

There is a version of the format for each model of TI calculator. About three or four of the versions are meaningfully different.

Identification
All TI files begin with an 8 byte ASCII signature that starts with " " and indicates the version or model, for example " " or " ".

Picture files use a filename extension that ends with the letter "i".

There are also "group" files, whose extension ends with "g". A group file contains multiple variables, one or more of which may be images.

Specifications

 * TI Link Protocol Guide (download) - See [TI* → File Formats] and [TI* → Variable Formats → Pictures]

Software

 * gp_tipic.tar.gz - GIMP plugin (requires libtifiles from tilibs)
 * Konvertor
 * XnView (Supports some .92i files, at least)
 * Tom's Viewer
 * Rest7 Online Image Converter
 * abydos
 * abydos

Sample files

 * ticalc.org archives → [model] → basic → media → images
 * Or sometimes [model] → basic → graphics
 * https://telparia.com/fileFormatSamples/image/tiCalc/