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Front End Design Using Synopsys Tools - Part 3

Author: Hetaswi Vankani, Dr. Dong S. Ha

Tool: Library Compiler, VCS and DVE

NOTE: The files downloaded must not be saved or used in .txt format. Please save it in the format as mentioned in the tutorial.

 

Simulate and Analyze Waveform

1.  Type simv

2.  Check if ‘updown_counter.dump’ is generated. If not check the testbench.

3.  Next step is to observe the .dump file in the waveform window. Make sure that ‘[Synopsys_New]’ appears in the prompt. If not, type ‘Synopsys_New’. Synopsys’ Discovery Visualization Environment (DVE) will be used to trace signals. Type ‘dve’.

Fig 2. DVE Window
Fig 2. DVE Window

4.  File → Open Database → Select ‘updown_counter.dump’ → Hit ‘Open’

Fig 3. Loading ‘updown_counter.dump’
Fig 3. Loading ‘updown_counter.dump’
Fig 4. Design waveform screen after updown_counter.dump has been loaded.
Fig 4. Design waveform screen after updown_counter.dump has been loaded.

5.  Select the design ‘tb_cnt_updown’ in the hierarchy window, to display the input and output signals.

Fig 5. Signals are displayed in the variable window.
Fig 5. Signals are displayed in the variable window.

6.  Select the signals in the variable window. Next in the GUI follow the steps:  Signal → ‘Add To Waves New Wave View’

7.  A waveform window as shown below will appear: 

Fig 6. Waveform window with signals.
Fig 6. Waveform window with signals.

 

8.  In the waveform window, View → Zoom → Zoom full

 

Fig 7. Waveform window zoomed full.
Fig 7. Waveform window zoomed full.


Comments to: ha@vt.edu

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