| 摘要 |
PURPOSE:To reduce the runaway of software due to the influence of hardware by transferring original data into a specific area, always comparing the transferred data with the original data and periodically checking the operation of a memory. CONSTITUTION:All original data stored in a program are transferred to the specific area 21 provided in a RAM 2. Data in the specific area 21 are read out based on an address and compared with the original data. When both the data are equal to each other, the succeeding address is prepared in order to read out the succeeding data, all the prepared data are decided, and when all the data are equal is decided, practical work can be allowed. Once unequality is decided, a program is jumped to power ON reset processing to retry it. Consequently, the software can be prevented from generating runaway. |
