A fault-tolerant computer system, which prevents an I/O fault from reaching the CPU block while using an alternative I/O block to continue processing, employs common general-purpose processors with a minimum of specialized peripheral circuits. Dual system bus adapters are provided not in the fast-operating...http://www.google.fr/patents/US6032265?utm_source=gb-gplus-shareBrevet US6032265 - Fault-tolerant computer system
