Ah, Rod Land, the colorful and popular JALECO platformer from the 80's, mostly known for its home computer (especially Amiga) ports. The arcade version is the original, though, and has the most content and best graphics.
It's been more than two years since I first started taking the game apart. I was new to disassembling arcade code at that point and was making pretty slow progress on understanding what I was finding. Every few months I would pick it back up and chip away at it some more, but never formalized anything into an article.
Well, I decided to finally power through it about a month ago, and here we are. This is the most thorough disassembly I've done to date, and this article covers the interesting bits.