Occasional Contributor
Super ContributorThere's something wrong with that group in the Wave view. As you can see in the Objects pane, D is correct there. Remove what you have in the Wave view and then click and drag D from the Objects pane to the Wave view.
#iwork4intel
Occasional ContributorIf I delete D, drag D from Object pane to Wave window, I couldn't key in the D binary values.
Super ContributorDo you mean to provide input stimulus? If so, you can right click the D in the wave window, select force and insert value. Then run simulation.
Insert one by one will become a tedious job, instead you can insert example line in the transcript.
VSIM> force -deposit /D 2#0, 2#1 20, 2#0 40, 2#1 60, 2#1 80
VSIM> run 200 ns
the line change D to binary value 0 (2#0) starting from time instant now. Then, 20 ns later, change the input to 1 (2#1 20).
Occasional ContributorI can key in the input correctly. I also can get the output as expected.
My question is actually the display (circle in red) is not showing the input that I keyed in. Please see attached again.
No matter what input that I keyed in, the first row (circle in red) is always showing 0000
Thank you.
Super ContributorCould you help to share your project so I can look into it?
Occasional ContributorCertainly.
In ModelSim, I suppose my project is called addern_sim.mpf
In Quartus Prime, my project is called addern
In ModelSim, I try to add 1011 and 1001.
Thank you.
Super ContributorI recommend to start a new project and key in the same input again. It seems that the Edit/: wave group from wave.do could be what's left from the last project.
Simulate the addern in work project, insert command [add wave *], provide the input and run the simulation.
Occasional ContributorI don't understand how to put the wave group. Here attached of how I key in the input.
Super ContributorNow I get what you mean by that. It seems that the input only responds to the most significant bit with the remaining bits being 0.
Not sure why the input display does not match. Might need to ask Mentor on this.
If you simulate the waveform, I believe the input will display correctly.
You can simulate by right click the input waveform that you want to simulate e.g. X , Y.
Go to Edit > Waveform Editor > Export Waveform. Save as force file e.g wave.do
Start simulate the addern.v file. [ vsim work.addern ]
Insert command [ add wave * ]
Insert command [ do wave.do ]
Insert command [ run -all ]
Super ContributorStill, I suggest that you write a testbench that applies constant inputs to the signals you want to observe.
