| 摘要 |
PURPOSE:To perform a test in consideration of the margin of an input/output device by using an interface adaptor which works by an instruction given from a controller. CONSTITUTION:A controller 1 transmits the address of an interface adaptor 2. A selection/instruction analysis circuit 4 confirms the coincidence of addresses and analyzes and stores the instructions which are given sequentially. When the end of this storage is reported to the controller 1, the controller 1 proceeds to the selection sequence of an input/output device 3 and transmits the address and test signal. An interface searching circuit 6 detects the break point of said test signal from the signals supplied through terminals A and C and produces the trigger signal. This trigger signal is applied to an error generating circuit 5, and the circuit 5 superposes noises and produces signal cracks to vary the test signal. This vaired test signal is sent to the device 3. This result is sent to the controller 1 from the terminal C via a terminal D, and the controller 1 decides the result. |
