METHOD AND LOAD DEVICE FOR EVALUATING BUS CONFLICT OPERATION

摘要

PROBLEM TO BE SOLVED: To make it passible to surely generate a bus conflict operation state and to evaluate the bus conflict operation state highly reliably by setting conditions for acquiring the right to use a bus, monitoring whether or not the state of the bus meets the set bus use right acquisition conditions, and acquiring the right to use the bus once detecting the bus use right acquisition conditions being met. SOLUTION: Conditions for transferring transfer data stored in a data memory 75 from an external terminal 8, i.e., the bus use right acquisition conditions are set in a bus monitor part 72. When the use state of the CPU bus 6 monitored by a bus monitor part 72 meets the bus use right acquisition conditions, a transfer control part 74 instructs for acquisition of the bus use right. A bus interface part 73 having received the instruction outputs a bus use request to a bus use right arbitrating circuit and informs the transfer control part 74 of the acquisition of the bus use right once acquiring the bus use right. Then, the transfer control part 74 writes transfer data read out of a data memory 75 to a main storage device 2 through the bus interface part 73 and CPU bus 6.