Invoking ViewTrace

To view a large number of signals simultaneously, open a waveform window in ViewTrace. Use the wave command in the Viewlogic simulator to create a .vcd file that contains the signals and vectors you want to view. The Setup Waveform Streams command also opens ViewTrace, or you can use these steps.

1. Click on the ViewTrace icon from the Workview Office Toolbar.
   See the next figure.
   
   
   
   
2. Select File Open and navigate to your project directory to select the waveform display file.
   
   The name of the waveform file is the name you used when you added the signals to the waveform. The default name is design.vcd.
   
   

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   NOTE

   As noted in the “Functional Simulation” chapter, the default waveform file created during both functional and timing simulation is called design.vcd. To avoid overwriting the functional waveform file, specify a new name when adding signals to the timing waveform file. You can also do this by editing the functional command file, changing the waveform file name after adding the signals. You can then save the modified command file to a new file name so you can use both a functional and a timing command file.

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3. Click on OK.
   
   

The Open dialog box closes and the specified waveform display file opens.

NOTE

Not selecting a VCD file from the File Open list box but instead entering a new name creates a stimulus file, used to create a stimulus command file. This file does not annotate values during simulation.