The operation of a stream buffer varies depending on whether a normal operation mode or a test mode is selected. In the normal operation mode, the stream buffer is read from only when the data requested by a CPU read has been determined to reside there, and the stream buffer location read from is the...http://www.google.com/patents/US5452418?utm_source=gb-gplus-sharePatent US5452418 - 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
