Multilevel cache system with graceful degradation capability

摘要: The directory and cache store of a multilevel set associative system are organized in levels memory locations. Round robin replacement apparatus is used to identify which one the multilevels information be replaced. includes parity detection for detecting errors addresses being written during cycle operation. Control combines such with signals indicative hits produce invalid hit signals. control response occurrence first signal conditions round as well other portions limit operation those sections whose error free thereby gracefully degrading