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Mark Net in Virtuoso-L

threepwood06

Hi all,
I have troubles using the Mark net tool, maybe you could help out.

In this example for the test I try to highlight a simple net (that does not propagates too much in the layout) called "pwr_i", here in metal 2 (purple).
I do: Connectivity > Mark net, and then press F3, and in the MarkNet Options windows go in Via Layers tab and -for the test- deselect all but (M2) (V2) (M3).


The result is plenty of other unattached signals are highlighted: in this example you can see the "en" signal (horizontal) and even the thick exclude layers (on the left) are highlithed as well...

What do I do wrong ?

Thanks for your help and best regards

Parents
  • Andrew Beckett

    Rather hard to see what the original layout looked like, but the large regions at the right and bottom, what layer are they one? Is it some purpose of M2 or M3 (rather than a specific blockage object)? If so, since the mark net is set up to be layer based, it's going to see those as being the same materials:

  • threepwood06
    in reply to Andrew Beckett

    Hi Andrew and thank you for your answer

    As aforementioned this layer is an overlay of exclude layers and they have nothing to do with the pwr_i net I am trying to highlight.

    I know this is rather hard to see the misc. layers but I can provide any information/screenshot if needed.

    Thanks.

  • Andrew Beckett
    in reply to threepwood06

    So what is that white-ish/yellow-ish layer (in the area which I drew the red highlight around)? You said "exclude layers" but I don't know what they actually are? I suspect they are key to the problem.

    Andrew.

  • threepwood06
    in reply to Andrew Beckett

    These are all available metals + OD + PO exclude layers, all of them.

    I was wondering, though, if there could be a shortcut between the M2 drawing layer and the M2 exclude layer... Maybe this is a hint. Do you think there is a way to exclude some layers from those that I want to highlight ?

  • threepwood06
    in reply to threepwood06

    In this screenshot I show only M2 drawing and M2 exclude layers:

  • threepwood06
    in reply to Andrew Beckett

    The "exclude" layers are the layers we add to avoid the automatic filler tool to add dummy layers (metals, poly, active, ...) to meet the min density rules.

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  • threepwood06
    in reply to Andrew Beckett

    The "exclude" layers are the layers we add to avoid the automatic filler tool to add dummy layers (metals, poly, active, ...) to meet the min density rules.

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