A dual microprocessor computing system is used to control an engine in a motor vehicle. Each system contains a Personality Programmable Read Only Memory (PPROM) containing system calibration data that is transferred from the PPROM to the read-write memories in the microprocessors. In order to identify...http://www.google.com/patents/US4558416?utm_source=gb-gplus-sharePatent US4558416 - Method for maintaining the integrity of a dual microprocessor multiprocessing computing system
