Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
17255 Discussions

modelsim, transcript and input test signal

Altera_Forum
Honored Contributor II
1,221 Views

Hello guys, 

 

I have some issues when trying to set-up the input signal of a vhdl design in transcript. 

 

From what I have undestand, supposing that my input signal is /d, if I want the signal to have a change of 10 every 100 ns I should write : 

 

vsim> force -deposit /d 10#0, 10#10 100, 10#30 100, 10#40 100 

 

By the way, when I run the model (run 500) I see that the /d waveform has a value of 0 at 0 ns, changes to 40 at 100 ns and then remains at 40. 

 

What am I missing ?? 

 

Thank you for any suggestions. 

 

Have a nice day.
0 Kudos
1 Reply
Altera_Forum
Honored Contributor II
504 Views

 

--- Quote Start ---  

Hello guys, 

 

I have some issues when trying to set-up the input signal of a vhdl design in transcript. 

 

From what I have undestand, supposing that my input signal is /d, if I want the signal to have a change of 10 every 100 ns I should write : 

 

vsim> force -deposit /d 10#0, 10#10 100, 10#30 100, 10#40 100 

 

By the way, when I run the model (run 500) I see that the /d waveform has a value of 0 at 0 ns, changes to 40 at 100 ns and then remains at 40. 

 

What am I missing ?? 

 

Thank you for any suggestions. 

 

Have a nice day. 

--- Quote End ---  

 

 

The time goes in absolute mode. So it has to be rewritten as: 

vsim> force -deposit /d 10#0, 10#10 100, 10#30 200, 10#40 300
0 Kudos
Reply