How do you show waveforms in ModelSim?

To display waveforms, select the design under test (inc) in the “sim” tab, right-click the mouse, and select “Add > To Wave >All items in region”. Alternately, bring up a wave window by selecting “View > Wave” in the ModelSim menu.

How do I export a waveform from ModelSim?

To save the current format of your Wave window, click in the Wave window so it becomes the active window, then choose File -> Save. The Save Format dialog box will appear.

What does Vmap do in ModelSim?

vmap writes an initialization file called modelsim. ini into your working directory which contains information about your working environment (like which libraries you are using etc.).

How do I get waves in Verilog?

Loading Waves for SystemVerilog and Verilog Simulations

1. Go to your code on EDA Playground. For example: RAM Design and Test.
2. Make sure your code contains appropriate function calls to create a *.vcd file. For example:
3. Select a simulator and check the Open EPWave after run checkbox.
4. Click Run.

How do you reset a wave on ModelSim?

1. If you desire to clear your “wave” window during simulation, simply press the restart icon illustrated below.

What is Transcriptsim model?

tcl, or TranscriptFile in modelsim. ini file is set, then the transcript output is logged to the specified file. By default the TranscriptFile variable in modelsim. ini is set to transcript. If either variable is set, the transcript contents are always saved and no explicit saving is necessary.

How do you reset a wave on modelsim?

How do I change the run length in modelsim?

You should see “Resolution” in the lower-right corner. It is usually set to “Default.” Change it to whatever you like. into the transcript/terminal window. You can give that run time any units you like, like for instance run 10 ms simulates the first 10 milliseconds.

Is Questa the same as ModelSim?

Questa is Mentor’s flagship product that has full System Verilog simulation support. Modelsim is an older product that has limited support for System Verilog. If you plan on using OVM/UVM then you would want to go with Questa, otherwise Modelsim is good enough.

What is the difference between Questa and ModelSim?

Questa Sim offers high-performance and advanced debugging capabilities, while ModelSim PE is the entry-level simulator for hobbyists and students. Questa Sim is used in large multi-million gate designs, and is supported on Microsoft Windows and Linux, in 32-bit and 64-bit architectures.

How do you find the output waveform in EDA playground?

Loading Waves from EDA Playground

1. Go to your code on EDA Playground. For example: RAM Design and Test.
2. Make sure your code contains appropriate function calls to create a *.vcd file. For example:
3. Select a simulator and check the Open EPWave after run checkbox. (Not all simulators may have this run option.)
4. Click Run.

What is the difference between Always_comb () and always@ *?

always_comb automatically executes once at time zero, whereas always @* waits until a change occurs on a signal in the inferred sensitivity list. always_comb is sensitive to changes within the contents of a function, whereas always @* is only sensitive to changes to the arguments of a function.

How do I change the run length in Modelsim?

How do I reset Modelsim layout?

modelsim contains setup details for the layout of panes. .modelsim will (should!) be regenerated next time you open modelsim. Show activity on this post. At the menu bar (main window), click on layout and then choose reset. Most of the windows will be reset.

How do I save my transcript on modelsim?

You can save the transcript at any time before or during simulation. You have the option of clearing the transcript (File > Clear Transcript) if you don’t want to save the entire command history. To save the contents of the transcript select File > Save Transcript As from the Main menu.

How do you use timescale in ModelSim?

Two possibilities:

1. Check the timescale declared above module my_module(…) , the module will use this time scale.
2. if the command line option -timescale timeunit/timeprecision it is used, it will the global timescale and any declaration in the verilog files will be ignored.

Is Questa free?

Questa*-Intel® FPGA Starter Edition Software Log into Self Service Licensing Center to get free one-year license.

What is difference between Xilinx and ModelSim?

The Xilinx ISE is primarily used for circuit synthesis and design, while ISIM or the ModelSim logic simulator is used for system-level testing.

How to reload the waveform formats in ModelSim?

If you quit ModelSim and then later reload the counterproject, then the waveform formats can be reloaded by first starting a new simulation and then entering the command do wave.do in the Transcript window. 9Concluding Remarks

How to make changes in the input waveforms of a simulation?

Changes in the input waveforms can be made using the approaches explained above. Then, it is necessary to restart the simulation using the altered waveforms. For example, change the waveform forx1to have the logic value 1 in the interval from 0 to 200 ns, as indicated in Figure26. Now, click on the Restart icon shown in the figure.

What is the wave window in ModelSim?

The Wave window is used to display waveforms that are associated with these inputs and outputs. Figure7shows several toolbars that can be used to select various ModelSim GUI commands. To make your window look like the one in the figure, you may have to open or close some of the available toolbars.

What is the ModelSim simulator?

2Getting Started The ModelSim Simulator is a sophisticated and powerful tool that supports a variety of usage models.