| 摘要 |
PURPOSE:To recover automatically a data error by utilizing a buffer memory incorporated in a system to store a storage address and a data and using a storage data at generation of storage error. CONSTITUTION:When a CPU1 fetches a data from a memory 3, a buffer memory 2 is checked at first and when an object data exists in it, it is read and used and if it does not exist, the object data is read from the memory 3. In this case, the data is stored also to a memory 2. When the CPU1 stores a data to the memory 3, the memory 2 is checked and when the object data exists, the storage data is updated and stored in the memory 3. When the memory 2 has no data, the data is stored in the memory 2 and the data is stored in the object address of the memory 3. In this case, when an error is detected in the data stored to the memory 3, the data stored in the memory 2 is used at first and retried so as to recover automatically the data error. |
