| 摘要 |
PURPOSE:To allow a monitor to execute normal processing based upon an interruption without generating a trouble even when task processing with a long processing time exists by providing the monitor with a background processing part, and at the time of interrupting the processing of the processing part, executing processing based upon the interruption. CONSTITUTION:The calculation processing of an IPS requiring a long processing time, the formation of TRC conversion processing, the switching of a CRT screen, etc., are regarded as background processing with a low priority level. Processing to be surely executed such as timer processing, I/O processing and transmitting/receiving processing is regarded as processing with a high priority level. In each interruption in each prescribed time, the interruption is executed by an interruption processing part 1, and after ending the processing, background processing is executed by a background processing part 2. Since the low level processing is executed by utilizing the idle time of a CPU in which normal monitor processing is not executed, the normal monitor processing is executed without generating any trouble. |
