Method of using stream buffer to perform operation under normal operation mode and selectively switching to test mode to check data integrity during system operation

摘要: The operation of a stream buffer varies depending on whether normal mode or test is selected. In the mode, read from only when data requested by CPU has been determined to reside there, and location contain data. This determination made comparing address request with addresses stored in buffer. Also, written memory response that misses buffer, one allocated receive incoming Two different allocation methods are shown, first-in-first-out (FIFO) least-recently-used (LRU). During directly at locations specified write requests, without regard presence take place mode. method provides straightforward way testing during system bypassing some functions favor direct access CPU.