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Get hierarchical shape net names for the current cellview

TobiasMrks

How to get the net name of an Instance with Skill in Virtuoso Layout in the context of the current cellview?

I tried

instance->master->shapes

Then select a shape and readout:

shape->net->name

But now the net name is in context of the instance or Pcell instance and not the net name corresponding in the cellview.

Is there a way to get the in the cellview given connectivity for a shape inside an instance or pcell?

Thank you for your responses

Parents
  • mbracht

    There is not "one" single net an instance is on - an instance is usually connected to more than just one net - here's how you get at the net names:

    instance->instTerms~>net~>name

  • TobiasMrks
    in reply to mbracht

    Ok, but is there a way to get the corresponding net name from a shape inside the instance?

  • Andrew Beckett
    in reply to TobiasMrks

    Well, it depends on whether the shape has got connectivity or not - many shapes inside PCells will not have connectivity - typically only the pins have connectivity. Assuming the shape does have connectivity, you're only going to get the higher level net name if it's actually a shape on the same net as the terminal (terminal is the logical, pin is the physical). So for a shape inside the PCell, knowing shape~>net~>terminal~>name, and then if you looked over instance~>instTerms~>name for the same terminal name, you could look at the instance~>instTerms~>net~>name to find the corresponding net at the level above.

    Sorry if that was a bit poorly described - it's hard to know precisely what you're doing in terms of processing the design.

    Andrew.

  • mbracht
    in reply to TobiasMrks

    master = instance->master

    (foreach mapcar instTerm instance->instTerms
             (list instTerm~>name (setof shape master~>shapes shape~>net~>name==instTerm~>term~>net~>name))
    )

Reply
  • mbracht
    in reply to TobiasMrks

    master = instance->master

    (foreach mapcar instTerm instance->instTerms
             (list instTerm~>name (setof shape master~>shapes shape~>net~>name==instTerm~>term~>net~>name))
    )

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