Troubleshooting

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A Convergence Failure Error is Displayed

A convergence failure means that the simulator is unable to simulate the circuit, often due to it having no stable state (for example, a NOT gate with the input and output connected together). Although it will not force you to stop the simulation, it is important to note that the results after a convergence failure has occurred may not be accurate.

Certain circuits, such as a latch made from NOR gates, will always cause a convergence failure at startup because they have no initial stable state on startup. In this case, the results will be invalid until the latch is set to a specific state.

User Interface is Slow or Unresponsive during Simulation

On some systems, where there are a large amount of transitions to be displayed on the graph view performance may be reduced. To resolve this issue several steps may be taken:

"Failure to open file" Error is Displayed

This error message means that the simulator was unable to open the file. It will still try, where possible, to load the parts of the file it can understand, but there will likely be missing or incorrect components or wires. There are a number of possible causes:

Input Data is rejected

In order to prevent invalid values being entered and causing a crash or data corruption, the program validates data to ensure it will not cause problems. This means that:

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