| 摘要 |
PURPOSE:To allow the contents of the cash memory and main memory of a multiprocessor system to coincide at all times by detecting the overflow of an address stack register thereby invalidating the entire contents of the cash memory. CONSTITUTION:The contents of the main memory 23 and cash memory 1 of the multiprocessor system are so processed as to coincide at all times unless the memory 23 is rewritten by other device based on the readout request via an arithmetic part 4 when they do not coincide. When a stack register 6 gets full with the transferred addresses during this processing and overflows, this is detected 7, and a cash memory unsable signal is transmitted to a cash memory control part 5 through a cash memory invalidation control part 8, thereby invalidating the entire part of the memory 1. This obviates the occurrence of dissidence of the contents of the memories 1, 2 owing to the annhilation of the unprocessed addresses. |
