| 摘要 |
PROBLEM TO BE SOLVED: To provide a main storage access control device for improving main storage access performance by quickening the timing of the processing start of a subsequent instruction in the case of continuously processing reference instructions to the same address.SOLUTION: An instruction execution control device includes: under-execution instruction storage means for storing an instruction type, an access address and access completion data indicating whether or not access to a main storage is completed in association for each of under-execution main storage access instructions in a multi-processor system sharing the main storage; and execution means for, when receiving a subsequent main storage access instruction, referring to the under-execution instruction storage means, and for, when there exists a record whose access address is equal to that of the subsequent main storage access instruction, and the instruction types of the record and the subsequent main access instruction are both reference instructions, and the access completion data of the record indicates access completion, starting the execution of the subsequent access instruction without waiting for the reception of an opening instruction from a processor. |
