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Cannot find metal 3 and higher in the Layers window

dg1210dg1210
in General

Hi,
I'm new to klayout and was trying to create basic drc rules for metals from metal1 to metal5 (i think that is the highest metal layer supported by klayout, please correct me if that is not the case). I realised that the layers window in right hand side does not have metal3 and higher metals. I tried changing the tech library to see if some libraries have it and some may not - no success.
Can someone help?
Thanks

Comments

  • dick_freebirddick_freebird

    How did you get your layers?

    If you got them by streaming in a GDS file for a
    (say) standard cell library bundle, those cells
    may have been developed with a rule to use no
    more than the lowest three levels (to optimize
    routability) and were just not present.

    Then you would have to add the other layers by
    hand.

    There also might be some options set like "Hide
    Empty Layers"

  • MatthiasMatthias

    Hi Jim,

    thanks ... that would have been my question too :)

    Matthias

  • dg1210dg1210

    @dick_freebird @Matthias
    I selected the appropriate Technology file in top menu bar, then selected the corresponding PRIMLIB from Libraries window and dragged a cell from this library into the Layout Window. Is there any other way to get the layers by default in Layers window instead of adding each manually, please share if you can.
    Also, the 'Hide Empty Layers' is unchecked.

    One more thing not related to functionality of KLayout but in your screenshot the background is all black - how can I get that? I checked in all the menu options. The reason I'm asking is because mine is all white and is too much light and causes eye strain, black would really help.

  • dick_freebirddick_freebird

    If you load the layout with no technology (or even with,
    I believe) all layers present in the database will be
    populated in the layers list. But that helps none if the
    technology has more layers, but the layout does not.

    I wonder if the DBs for {whatever} have a "OneOfEach"
    layout (I used to make these early on in poor-boy PDK
    development, just to know I had everything "on the table").
    Maybe you sequentially load a few different DBs, saving
    the layers .lyp after each, and see how the list grows
    (and what remains missing)?

  • dick_freebirddick_freebird

    Background color can be set in File>Setup:

  • dg1210dg1210

    Thanks @dick_freebird. That helps! :)

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