Forum Discussion

cosx's avatar
cosx
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Assignment Inconsistent with Chip planner

Hello Everyone, I came across an issue with register assignment using TCL scripts in .qsf file of the project. The software I used was Quartus 18.1 standard edition. One strange issue occurs with t...
KhaiChein_Y_Intel's avatar
KhaiChein_Y_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,

Can you provide the test case and steps to reproduce the error?

Thanks.

Best regards,

KhaiY

  • cosx's avatar
    cosx
    Icon for Occasional Contributor rankOccasional Contributor
    5 years ago

    Hi KhaiY,

    Thank you for your concern!

    It seems that we meet agian, and you helped me with the topic "Ignored Buffers in Delay Line Design" before.

    This is a continued version from that one and here I have attached the updated archieved project for your reference again.

    After running "fitter" of the compile stage, a combinational circuit "delay_out" is found in resource editor at the location FF_X10_Y19_N17, whereas we expect to see a flip flop.

    This is the most confusing part and I do not know why this happens. All location assignments are in the txt file of my previous attachment "Assignment_inconsistency".

    Could you please help me with this?

    Thank you!

    Mingqiang

    • KhaiChein_Y_Intel's avatar
      KhaiChein_Y_Intel
      Icon for Regular Contributor rankRegular Contributor
      5 years ago

      Hi Mingqiang,

      If you refer to the Technology Map Viewer, the input of detector is connected to an output of a com binational logic named delay_out.

      When you locate in Resource Property Editor, you will see the connectivity between the delay_out and detector. The location for the detector is corect, which is FF_X10_Y19_N17.

      Please let me know if you have any questions.

      Thanks.

      Best regards,

      KhaiY

      • KhaiChein_Y_Intel's avatar
        KhaiChein_Y_Intel
        Icon for Regular Contributor rankRegular Contributor
        5 years ago

        Hi Mingqiang,

        Sure. I now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.

        Best regards,

        KhaiY