| 摘要 |
<p>PURPOSE:To protect software by providing an instruction code converting part which converts the code of an instruction from a data bus to send it to an instruction analyzing part. CONSTITUTION:An instruction code converting part 7 is provided which converts the code of the instruction from the data bus inputted through a data bus control part 1 and sends it to an instruction analyzing part 3. The instruction code converting part 7 allows nemonics and a machine language defined by a maker and a machine language defined by a user to correspond to each other. Thus, the set of machine languages is used as user's original to obtain a microprocessor where instructions and software are secret.</p> |
