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Virtuoso Layout L: Show/remove hidden/old (metal) layers

itos

Hi,

I have a design which I migrated from a 10 metal stack to a 8 metal stack.

It seems that the two "unsupported" metal stacks are still in the layout but I do not find any way to show and remove them. They are not listed as layers (because they do not exist in this PDK).

When I run DRC, I get the error of the unsupported metal layers. After clicking on the DRC error, the regions are highlighted where the metals are (and are supposed to be). But I find no way to mark and remove them.

Thanks!

  • Quek

    Hi itos

    This is a common problem when re-using layouts from processes with different metalstacks. You can read more about the solution from COS article 11717756.


    Best regards
    Quek

  • itos
    Hi Quek,

    Thank you. Unfortunately I cannot access this any more: "Account Expired, Your account is expired.".

    If it's not a big secret - could you tell me?

    Thanks!
  • Quek

    Hi itos

    No problem, please keep this to yourself and don't tell the other forum users. : )

    Would you please try this in CIW?

    cv=geGetWindowCellView()
    shapeList=setof(x cv~>shapes !x~>layerName)
    foreach( shape shapeList
       dbDeleteObject(shape)
    ) ;foreach

    The invisible shapes will only have "nil" as the layer name. They will be captured by the setof cmd and then be deleted.


    Best regards
    Quek

  • itos
    Hi Quek,

    Awesome, thanks!!

    The shapeList is empty for me, unfortunately. If I try shapeList=setof(x cv~>shapes x~>layerName) I get a long list of entries;
    however, shapeList=setof(x cv~>shapes !x~>layerName) returns just nil, i.e. no objects found.

    However, while playing around with this I somehow managed to make these metal layers visible and could delete them manually ...

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