| 摘要 |
PURPOSE:To relieve the load of the hardware by providing a memory access interface between memory controllers so as to decrease the number of memory access interfaces in the entire system in a system of multiprocessor constitution. CONSTITUTION:The memory access interface (MAIF) 300 is provided newly between the memory controllers 110 and 210. When an operation controller 150 requires the memory access to a data corresponding to a main storage device 200, the access request is attained to the memory controller 110 to which the MAIF is connected. When the conroller 110 detects that this access request is the access to the data corresponding to the main storage device 200, the memory access request to the controller 210 is performed via the MAIF 300. The controller 210 accesses a cache memory 215 or the main storage device 200 the same as a conventional controller. In case of the data read, the read data is transmitted to the operation controller 150 requesting the memory access via the controller 110 and the MAIF 300. |
