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Er7Cho1gU's avatar
Er7Cho1gU
Icon for New Contributor rankNew Contributor
3 years ago
Solved

Initial value setting error

Hello: I'm new in verilog. Hopping that it's not a very stupid problem. I'm tring to buid a FSM system using register "state" to perform the state now. There is no error hint or any fun...
  • ShengN_altera's avatar
    ShengN_altera
    3 years ago

    Hi,


    Try to use devices Cyclone III, Cyclone IV, Max II, Max V or Arria II instead of Cyclone V. New devices are not supported on vwf waveform simulator because this is legacy simulator which only supported legacy devices and mainly for university program purpose. Or may be you can use modelsim simulator instead of vwf waveform simulator.


    Best Regards,

    Sheng

    p/s: If any answer from the community or Intel Support are helpful, please feel free to give best answer or rate 4/5 survey.


ShengN_altera's avatar
ShengN_altera
Icon for Super Contributor rankSuper Contributor
3 years ago

Hi,

I'm getting the desired vwf waveform for the code posted above. Check image below:

I think there is no problem with the code given.

File attached: fsm.zip

Quartus version: Prime 21.1 Standard Edition

Best Regards,

Sheng

p/s: If any answer from the community or Intel Support are helpful, please feel free to give best answer or rate 4/5 survey.

  • Er7Cho1gU's avatar
    Er7Cho1gU
    Icon for New Contributor rankNew Contributor
    3 years ago

    Sorry, I upload a wrong picture above. Here is my vwf waveform.

    The "state" pin perform high at the begining. However, you said that the waveform simulation on your computer is correct. I'm wondering if it is because of the setting of my quartus. I just install Quartus these days. By the way, my quartus is version 13.1 web edition. I found that even I use timing simulation insted of functional simulation, there has no delay on the waveform. I'm not sure if there is a problem on the result and I'm figuring out the solution.