| 摘要 |
PURPOSE:To shorten the processing time in comparison with an on-demand paging system by performing the production of a precedent vector address and the page fault check through address conversion in parallel with the original vector reference. CONSTITUTION:A head vector element address VA0, a vector element interval VI and the vector length VL are supplied to main memory reference request circuits b30-b33 respectively. A vector address generator b5 calculates a vector element address VAi to use it as a virtual address with normal vector reference. Then a real address is obtained by an address converter b4. The vector page addresses are obtained successively by a vector page address generator b6 for a precedent paging action. A precedent address converter b7 gives the address conversion to a virtual address received via a line 6 according to the head address of a segment table. Then the generator b7 informs the generation of an address conversion fault to an interruption processing mechanism in a vector processor after knowing that the desired segment and page are not detected on a main memory b1.
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