| 摘要 |
<p>PURPOSE:To drive a microcomputer efficiently even if service interruption is generated by storing a processed result in an external storage device at the generation of service interruption, and at the restoration of the service interruption, reading the processed result and executing the processing from the succeeding step. CONSTITUTION:When service interruption is generated, the processed result of the microcomputer 11 which is stored in an inner RAM of the computer 11 is temporally stored in an external RAM12. When the service interruption is restored again, the processed result is read from the RAM12 to the computer 11 to restart the processing of the main routine again. Step information already processed up to the generation of the service interruption is also included in the processed result of the computer 11 in addition to the normal operation result. Therefore, the computer 11 executes the main routine from the step next to the already processed step at the restoration of the service interruption. Consequently, the driving efficiency of the computer 11 is improved and a buttery for storing the processed result can be reduced at its size and power consumption.</p> |
