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PCell instantiation with ILList parameter for entering points/coords

Adrian Nistor

Hi all,

We are using something like this:

pcDefinePCell( list(ddGetObj("myLib") myCellName "layout")
(
    (param1 string "something")
    (coords ILList '((0.0 0.0) (1.0 0.0 ) (1.0 1.0)) "polygon" "orthogonal")
    (param2 string "something_else")

)

let( () ....)

)

Based on the coords parameter , when I instantiate the pcell, virtuoso offers me the possibility to enter the points, similar to enterPolygon() function.

Question:
Where can I find some documentation regarding this behaviour? What other options do I have after the default list of the ILList parameters? [e.g.: "polygon" "orthogonal" .... what else? ]

Thanks,
Regards,
Adrian

  • Hi Adrian,

    This is from an ancient (not particularly well supported) mechanism in the old Graphical PCell tool. That allowed you to create "Parameterized Shapes" where the shape could drawn on the initial placement of the pcell. This is covered in the Virtuoso Parameterized Cell Reference manual, but it doesn't document how the ILList parameter is encoded.

    This has rather been superseded by a new "Fluid PCells" mechanism that allows both creation of pcells using one or more fluid shapes, and then provides commands to allow the fluid shapes to be edited thus altering the PCell. A tool such as Cadence PCell Designer makes creating these a lot easier.

    In general, the old Graphical PCell environment that's in the layout editor (under Tools->Plugins->PCell) is in very low maintenance mode.

    Regards,

    Andrew.

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