| 摘要 |
PURPOSE:To improve the performance for access, by issuing an access request to a bank, which is not busy, and giving priority to an access request to other banks in the storage controlling system where banks are accessed by the output of the highest priority level. CONSTITUTION:If access requests to plural banks 13a-13d in a main storage device 12 are issued from an arithmetic device, the access requests are issued to the bank, which is not busy, when at least, one bank, among banks 13a-13d is not busy, and simultaneously, access requests to other banks are exectuted preferentially while suppressing other access requests. By this cntrol, the perfomance for access to plural banks is improved considerably. |
