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Assura Rules file debuging

jmoore

Hi. 

I have a design rule mod I have been using for years to calculate a certain transistor geometry and after moving to a new design kit and version of Assura I am getting:

ERROR Text can't attach to layer: substrate is not connected.
WARNING LVS Run detected.
Non-legacy mode has been disabled for this LVS run
WARNING Errors exist in rules file so this program cannot continue.
Errors exist in the rules file '/opt/cad/IBM_PDK/cmrf8sf/V1.7.0.2DM/Assura/LVS/extract32.rul'.

virtuoso version: IC6.1.4.500.11
assura version av4.1:Production:dfII6.1.3:IC6.1.3.500.15 10/08/2010 03:04 (sfrh50)

Is their a way to increase the debug level in Assura such that it will tell you where in the rules file it is running in to problems? I already have the verbose and strict switches set.

 

  • First, the current IBM_8RF PDK is V1.8.0.4.  You should update.  Then, neither that PDK or the V1.7.0.2 version that you are using supports IC6.1.4.  You should be able to use IC6.1.3.  However, that is not the problem here.  I had this same issue for several months and only recently resolved it.  I had an "add_text.file" file in my working directory.  This came from a much older PDK version and just continued to sit in my working directory.  The only line in that file that is not commented out is:

     sub!      0            0       attach=substrate

    By commenting out this line and/or renaming add_text.file, that Assura LVS error went away and LVS will complete.  Regards, Zach.

  •  I take that back, the V1.8.0.4 PDK does support IC6.1.4.  Let us know if LVS runs after modifying add_text.file.  This problem plagued me for months so I am curious if the solution works for you too.  Regards, Zach.

  • Hi Zach,

    You are great. Thanks for your answer since I was encountered this problem today and I found your answer. It really helps me. I start IC5.1.4 two years ago, and later update to IC6.1.4, which is currently I'm using. The old file was created two years ago, and did not be covered by a new file. It is strange. Anyway, thanks again.  

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