BOUNDARY EXECUTION CONTROLLER AND BOUNDARY CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To attain the boundary control to plural vector store instructions with the minimum capacity of HW(hardware). ;SOLUTION: At a boundary control part 21, the end address of a vector store request under execution is calculated and the addresses of start and end points of a boundary section of the vector store request are registered. At the same time, the start address of the subsequent vector store request is compared with the registered start point address and also the end address of the said store request is compared with the registered end point address respectively. Then the registered addresses are changed and the address of the subsequent scalar load request is compared with the addresses of start and end points of the registered boundary section. Then the output destination of the said scalar load request is indicated to a memory request control part 2 to output with control the scalar load request to a cache memory 3 or a main storage part 4. Thus, a scalar load instruction can be carried out during execution of plural vector store instructions.;COPYRIGHT: (C)2001,JPO