A system for real-time digital signal processing employs a single-chip microcomputer device having separate on-chip program ROM and data RAM, with separate address and data paths for program and data; however, the accumulator in the data path may be used as a program address source. An external program...http://www.google.com.tw/patents/US4608634?utm_source=gb-gplus-share專利 US4608634 - Microcomputer with offset in store-accumulator operations
