| 摘要 |
PURPOSE:To shorten a bus occupation time, by providing a means or the like where data from the external is stored in accordance with plural input/output controllers to perform the direct memory access transfer in a high-speed access time. CONSTITUTION:The data storage means or the like is provided which has plural storage positions and stores data from the external in accordance with plural input/output controllers. For example, a buffer controller 100 is connected between a common bus 101 of the interlock cycle operation and an interface 301 of a main storage device 300 of the split cycle operation, and the main storage device 300 is connected to a central processing unit 200 and another data processor 400 through interfaces 201 and 401. Input/output controllers 500, 600, and 700 are connected to the common bus 101, and peripheral control parts 510, 520, 530, and 540 are connected to the input/output controller 500. Peripheral devices 511, 521, 531, and 541 are controlled by peripheral control parts 510-540. |
