Forum Discussion
Occasional ContributorModelSim - vector input not showing the correct binary
Please see the attached file. It's a 10's complement for 4-bit BCD.
I have a 4-bit vector input, and 4-bit vector output. But, the vector input is not showing the correct binary number. It shows all 0000, although the waveform show the correct input that I key in.
How to display the correct vector input in this "Wave" window?
13 Replies
sstrellSuper Contributor
There'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
LChow3Thanks for suggestion.
First, I couldn't load / open the wave that I saved yesterday. How do I open the wave (those inputs signals that I put in earlier)?
I have saved the wave in .do file.
- LChow3
If I delete D, drag D from Object pane to Wave window, I couldn't key in the D binary values.
- RichardT_altera
Do 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).
- RichardT_altera
Insert "do example.do " in the modelsim transcript.
- LChow3
Got it, thank you.
