A fault tolerant memory system is disclosed which includes a main memory device, storing {HEAD ~ data} and an associated error detecting code, and {TAIL ~ a shadow memory device}, storing data corresponding to the data stored in the main memory 
A fault tolerant memory system is disclosed which includes a main memory device , storing { HEAD ~ data } and an associated error detecting code , and { TAIL ~ a shadow memory device } , storing data corresponding to the data stored in the main memory
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH