| 摘要 |
PURPOSE:To enable to store the carrer of each page of a main storage device, by storing the order of accessing of a page address, based on the page address of the main storage device to be accessed from a processor stored in a register. CONSTITUTION:The page address 21 at the access time of a main storage device 12 from processors 11, 11a... and the address 21 in the address formed with the word address 22 are added also to an address career circuit 13. The content of the register storing the oldest page address in the circuit 13 and the page addresses at immediately before and after the accessing, is compared and selected to store the order of the page access of the main storage device at each processor in a sequence storage circuit. The career of each page of the main storage device is preserved to assign the page of the main storage device in an optimum manner. |
