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NuvKFC's avatar
NuvKFC
Icon for Contributor rankContributor
4 years ago

How to find combination loop in Quartus tool?

I get an ASIC base design. The timing report as follows picture show "LOOP"

Does "LOOP" means combination loop?

How to find combination loop in Quartus tool?

I had tried Technology Map. But I failed.

3 Replies

  • SyafieqS's avatar
    SyafieqS
    Icon for Super Contributor rankSuper Contributor
    4 years ago

    HI KFC,


    What Quartus are you using? If you are using Pro, you can simply cross probe to RTL Viewer, Chip planner etc


  • SyafieqS's avatar
    SyafieqS
    Icon for Super Contributor rankSuper Contributor
    4 years ago

    Hi Kfc,


    May I know if there is any update?


    • NuvKFC's avatar
      NuvKFC
      Icon for Contributor rankContributor
      4 years ago

      Hi SyafieqS_Intel

      Sorry that too late to respond. I use Quartus13.1 version. I has never tried Pro.