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reportDanglingPort command problem

dota

    I found reportDanglingPort command in encounter Can't report top-level module dangling port, So deleteDanglingPort can't clean these ports. any way to fix it?

  • Hi Dota,

    It sounds like you're working on a block-level design and want to delete top level module port that isn't connected to anything.  reportDanglingPort and deleteDanglingPort both work on hierarhical instances in the design (not on top level module ports).  I wouldn't be surprised if the tool doesn't provide this capability for fear of changing the top level port list and causing downstream formal verification failures.

    There may be a native way to achieve what you're looking for, but if there is I'm not aware of it.  Maybe you could try a scripted approach that identifies the top level module ports that have only 1 term (ie, itself) and then you can call deleteModulePort with the "-" option (which is a special operator for the top level module) to delete the top level module port?

    foreach term [dbGet top.terms] {
      if {[dbGet $term.net.numTerms] == 1} {
        deleteModulePort - [dbGet $term.name]
      }
    }

    Hope this helps,
    Bob

     

  • Hi Dota,

    It sounds like you're working on a block-level design and want to delete top level module port that isn't connected to anything.  reportDanglingPort and deleteDanglingPort both work on hierarhical instances in the design (not on top level module ports).  I wouldn't be surprised if the tool doesn't provide this capability for fear of changing the top level port list and causing downstream formal verification failures.

    There may be a native way to achieve what you're looking for, but if there is I'm not aware of it.  Maybe you could try a scripted approach that identifies the top level module ports that have only 1 term (ie, itself) and then you can call deleteModulePort with the "-" option (which is a special operator for the top level module) to delete the top level module port?

    foreach term [dbGet top.terms] {
      if {[dbGet $term.net.numTerms] == 1} {
        deleteModulePort - [dbGet $term.name]
      }
    }

    Hope this helps,
    Bob

     

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