| 摘要 |
PURPOSE:To trace in a real action the confirmation of actuation at a data input/output part by providing a simulation circuit for data input/output to a program action analyzer and sending data to a microcomputer product from the simulation circuit. CONSTITUTION:When a tracing action is started and a program runs up to a desired time point set previously, a set synchronization control circuit 22 starts a simulation circuit 21. Then the circuit 21 delivers artificial data set by an operation display part 14. This artificial data is sent to an input/output circuit 33 set at the side of a microcomputer product 200' via a digital bus 301. The product 200' uses the artificial data sent from the circuit 21 as the input data to perform a sequence action. Here an emulation CPU19 fetches the data on the product 200' on a bus at an optional time point of the tracing action and displays the data on a display part 14. Thus an operator analyzes the data displayed at the part 14 and confirms the actual working at the data input/output part. |
