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EX-OR in between two layouts in virtuoso

Sarvani

 hi all,

       I need to do ex-or(which compares two layouts layers) oparation between two two layouts. How can i do it. Is there any scripts? What is my problem is I changed only metal layers in layout. I didn't change any other layers except metal layers. I need to conform only metal layers are changed in my layout. So I need to compare two layouts by using ex-or oparation. My version is IC5141.

 Thankyou.

  • Do you own any Diva/Assura licenses? If so, you can create a simple rule file to do the xor and run the ivDRC engine.

    Put the following lines in a files called /tmp/xor_rules (put one line in for each of your layers you want to check):
    drcExtractRules(
      saveDerived(geomXor(("metal1" "drawing")))
    )

    Create a cell view that has a placement of your "before" layout and your "after" layout right on top of each other. Then run this command in the CIW:

    ivDRC(?cell geGetEditCellView() ?echo t ?full t ?hier nil ?rulesFromUnix t ?rulesFilePath "/tmp/xor_rules")

    If you don't own Diva/Assura, then you'll need use your verification tool (Calibre, Hercules, whatever) and create a rules file with the appropriate xor rules. You can then follow the tools instructions for comparing two stream files. This is a fairly common operation.

    Derek

  •  hi Derek,

                  Wow. Great. It works superbly. Thankyou for spending your valuable time on my little doubt. Thankyou once again.

     

     

     

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