The author, Oscar Toledo is a five time winner of the International Obfuscated C Code Contest. If you've never worked with assembly, take a look at basic.asm. I

The author, Oscar Toledo is a five time winner of the International Obfuscated C Code Contest. If you've never worked with assembly, take a look at basic.asm. It's not nearly as unapproachable or complex as many would believe (and in this case, Oscar's comments make it easy to understand). Understanding how a simple interpreter is built from scratch is eye opening.