RoboCop (arcade) The Future of Copy Protection

The article explores the sophisticated copy protection mechanisms in late 80s/early 90s arcade games, focusing on the game RoboCop and its unique dual-CPU system involving a 68000 and a HuC6280 sub-CPU. The HuC6280 handles protection by communicating with the main CPU through shared memory, providing sequences of values that influence game behavior and prevent unauthorized bootlegging. The author is disassembling RoboCop’s code, uncovering how this protection impacts gameplay, including slowing the frame rate by running intensive copy protection routines every frame. This deep dive highlights the complexity and ingenuity of arcade copy protection in that era.