| 摘要 |
PURPOSE:To erase the data having the small access frequency out of a buffer memory by updating the data stored in an auxiliary memory and corresponding to the data to be driven out into the data to be driven out when the data stored in the buffer memory is driven out. CONSTITUTION:The data which are frequently transferred between a CPU 1 and an auxiliary memory 3 are stored in a buffer memory 25. When the data to be updated is stored in the memory 25, only the data stored in the memory 25 is updated. When the data stored in the memory 25 is driven out, the data stored in an auxiliary memory 3 and corresponding to the data to be driven out is updated into the data to be driven out. Thus it is possible to carry out the LRU control to drive the data having the small access frequency out of the memory 25. |
