Microcomputer

摘要

A computer system comprising a microprocessor on a single integrated circuit chip having an on-chip CPU which includes: a data processing unit for executing instructions; a data link connected between a memory and the data processing unit for passing instructions to the data processing unit; a watch register for storing an instruction comparison code; and a watch comparator coupled to the data link for comparing the instructions passed on the data link with the instruction comparison code and generating a comparison output signal in dependence on the result of the comparison.