| 摘要 |
PURPOSE:To omit the transfer of data between memories and to realize a high- speed access to the memory by using simultaneously a main memory area and an extended memory area and at the same time adding the memories to both memory areas to store data for each page. CONSTITUTION:The storing subjects such as the processing programs, the data to be processed, etc., are stored for each page into a main memory area and an extended memory area in a memory 1. The head address of each page and the page addresses of each memory area are held in each entry of both a main memory area page address conversion table 11 and an extend memory area page address conversion table 21 respectively. When an access is given to the memory 1, the entry numbers of the table 11 are set at an entry holding register 12 and at the same time the intra-page addresses are set at an intra-page address holding register 14. Then the main memory page addresses held in the entries of the table 11 are read out and held by a page address holding register 13. These page addresses and the addresses given from the register 14 are used for accesses given to the memory 1.
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