| 摘要 |
<p>PURPOSE:To improve the processing efficiency of the whole of a device without interrupting the normally performed essential processing at the time of interrupt handling by inputting an instruction code from the external in bit serial and executing this instruction independently of a program in a ROM. CONSTITUTION:When a signal 214 is inputted, a processing control part 110 checks the state of a parallel instruction processing part 101 by a parallel instruction processing part state display signal 206. If the state allows the execution of the processing based on the serial instruction code as the result, a required indication is given to a serial instruction processing part 113 by a serial instruction processing part control signal 216, and entering into the operating state of this processing part 113 is reported to the parallel instruction processing part 101 by a serial instruction processing part state display signal 215 to prevent the parallel instruction processing part 101 from having a bad influence upon the processing of the serial instruction processing part 113. The normally performed essential processing is not temporarily interrupted for interrupt handling to prevent the reduction of the processing efficiency of the whole of the device.</p> |
