| 摘要 |
A buffer-storage control system used in a pipeline data processor includes a memory system having a two-level hierarchical structure composed of a main storage and a buffer storage having tag portion and a data portion, each portion being composed of a plurality of partitions. In the buffer-storage control system, the tag portion and the data portion can be independently accessed and the data portion is so constituted for every partition that it is possible to select one of a plurality of address passes and to select an address for a read access and an address for a write access for every partition, thereby simultaneously effecting a read operation and write operation in the same machine cycle and executing the read access again only when the read access and the write access are effected for the same partition.
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