Reverse-engineering the Spaceward Graphics .R format

[anjackson]

Working with Cynde Moya, we uncovered some very old .R image files, containing Spaceward Graphics image data. There should be a paper coming with more details, but for starters:

• Spaceward Graphics - Just Solve the File Format Problem
• Spaceward Graphics — Codex
• Image Alchemy - Just Solve the File Format Problem which is an old DOS program that can convert .R into something else.

The idea would be to use the set of files we have and the information and software above to reverse-engineer the file format, aiming to produce a .R parser in Python or some other modern language.