| 摘要 |
PURPOSE:To improve the system efficiency by controlling independently each external memory so that a high-speed access is possible to these external memories. CONSTITUTION:An external memory 1 contains independent disk controllers DC1-4 set opposite to hard disks HDK1-4. A data buffer memory 4 is divided into blocks in response to the controllers DC1-4. Thus, four data buffers DB1-4 are prepared in the memory 4 and controlled by different control systems included in a buffer controller BC.
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