HP 100LX/200LX icon

The HP 100LX and HP 200LX palmtop computers used a custom icon format, with filename extension .ICN.

Format
We did not find much documentation about this format, but the examples we've seen use a simple uncompressed bi-level format, with an 8-byte header. The image dimensions are stored in the header, but they are probably always 44×32.

Identification
A file begins with bytes.

Assuming dimensions of 44×32 pixels, the next four bytes are, and the file is exactly 200 bytes in size.

Sample files

 * http://cd.textfiles.com/20mnn/PALMTOP/WINICO.ZIP
 * http://www.angelfire.com/ego/palmtop/

Links

 * Wikipedia: HP 200LX