| 摘要 |
When a data read request is made at a long unit (two words) in a data processing system including a plurality of data processing unit, a control unit, a plurality (for example, two) of memory devices, data is simultaneously read from both memory devices. While certain data is supplied to the requesting data processing unit, other data is stored in a register. At the next timing, the other data is supplied to the data processing unit from the register. In storing, one word data is stored in a register. At the next timing, this word data and the following word data is stored in memory devices, respectively, at the same time. Pre-loading data and priority changing operations reduce the occurrence of access collision.
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