Gaming machines and systems having MRAM and MROM are disclosed. MROMs for storing boot programs and other Read Only code are formed by cutting write connections or not providing PCB socket leads to MRAM write pins, or by using memory hubs to prevent writing to MRAMs. A tale-tale board or other logging...http://www.google.com/patents/US7736234?utm_source=gb-gplus-sharePatent US7736234 - MRAM as critical event storage for powered down gaming machines
