Technical data

Debugging a VHDL design
ModelSim EE/SE Tutorial 3-33
9 To add top-level signals to the Wave window, enter the command:
add wave *
(Signals MENU: View > Wave > Signals in Region) (DRAG&DROP)
10 Now change the default simulation run length to 1000 (ns) with the run length selector
on the Main toolbar. Click on the field to edit the number to 1000 (notice how the
arrows allow you to change the run length in increments).
(Main MENU: Options > Simulation > Defaults)
11 Next, you will run the simulator. Select the Run button on the Main toolbar.
(PROMPT: run)
A message in the Main window will notify you that there was an assertion error.
Let's find out what's wrong. Perform the following steps to track down the
assertion message.