| 摘要 |
PURPOSE:To attain normal control, other complex control, testing, and trouble shooting by executing control based upon a microinstruction stored in a control storage part and control based upon a microinstruction supplied from the external. CONSTITUTION:When a signal processing part 9 is to be controlled by a microinstruction stored in a control storage part 7, the output of a switching signal generation part 6 is held at a prescribed state by a signal applied to an external input terminal 5. Consequently, a switching selection part 8 is actuated and the output of the control part 7 is inputted to the signal processing part 9 through the selection part 8 and controlled. When the processing part 9 is to be controlled by a microinstruction supplied from the external, the output of the generation part 6 is held at the prescribed status by a signal applied to the terminal 5 or the output of the control/storage part 7. Consequently, the selection part 8 is actuated and a signal inputted from an external microinstruction input terminal 10 is inputted to the processing part 9 through the selection part 8 and controlled and processed by a microinstruction supplied from the external. |
