DEVICE VERIFICATION SYSTEM ON LOOP CONNECTION BY INPUT/ OUTPUT DEVICE SIMULATOR

摘要

PROBLEM TO BE SOLVED: To surely verify the operations and detailed protocols on a loop of an input/output processor by using a single input/output device simulator under the environment of being loop-connected with plural input/output devices. SOLUTION: For the verification of the operations and the protocols on the loop of the input/output processor loop-connected with the plural input/ output devices, the single input/output device simulator and the input/output processor are connected one to one. In the constitution, plural port addresses are logically allocated by the single input/output device simulator, control data to the respective port addresses are transferred and thus, pseudo verification is enabled under the constitution where the input/output devices and the input/ output device simulator are present in large scale loop constitution.