Klapauzius hacked the Battlezone disk to include new features. He discovered that Atari used the old 6502 code on the disc and built an emulator around it so that the experience would be as close to the arcade as possible. I am currently writing an article about Battlezone and I am attempting to get hold of the snippet of code that Owen Rubin put in to get the volcano to erupt. Since Klapauzius hacked the game and has a full understanding of the code, I am attempting to get a hold of him (or anybody else that knows the code or can give me the starting offset and I can put it into a dissassembler and get it back to the original programmer Ed Rotberg).
Thank you for your time,