ADEX .IMG is a raster graphics format associated with ChromaGraph graphics cards by ADEX Corporation.
The third-party Image Alchemy software supports the format at least as far back as v1.5.1, so the format dates to 1991 or earlier.
Ed. note: Almost all the information in this article comes from non-authoritative sources, mainly Image Alchemy.
It's difficult to find any information about ADEX ChromaGraph. We can confirm the existence of:
- A product named "ADEX ChromaGraph II"
- A company named Adex Corp., of San Jose, CA, whose products include ADEX ChromaTron monitors and ADEX 8514 graphics boards
Files are observed to start with ASCII "
PICT", followed by the byte 0x00 (for a non-compressed image) or 0x01 (RLE compressed).