| 摘要 |
PURPOSE:To realize a continuous operation of an information processing system even in case a main memory has a fault during operation of said system, by separating the faulty area and sweeping the normal contents into an external memory to restore these contents into the main memory after the second rise. CONSTITUTION:When a main memory 2 has a fault, a normalcy check area 21 in a main memory constitution unit 20 is checked by a read-and-write operation via a main memory fault separating means 7. If an error is detected, it is decided that the unit 20 is defective and other normal units are written into an external memory 4. When a saving operation is through with the information on the main memory, the second rise is carried out by an OS rise means 6. Then the saved main memory information is read out to the memory 2 by means of an external memory reading means 5. Thus a continuous operation of an information processing system is ensured even after the second rise. |
