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lxGenFromSource - BUT ignore existing layout views and give me "flat" devices

vtboy51

I am using the lxGenFromSource in my SKILL routine to generate a layout view of my top level cellview (which has multiple sub-cells instantiated). As we all know if a layout view is found for any of the schematic sub-cells it will place that layout view and not generate "flat" devices. However, for my needs I would like to specify a temp library to generate the top level layout in, and NOT pull-in the existing layouts. 

My workaround has been to copy the schem/symbols into a temp lib and then run, but the copy is slow for larger designs.

  • vtboy51
    in reply to RobMan

    Just a quick recap for any future users who come across this thread.  I was able to get my code working as I had envisioned; it will ignore existing layout cells throughout the hierarchy when doing a generate from source from a top level schematic (when you don't have write access in the schematic library).

    • Use the cphCreatePhysConfig command to build a physConfig view in a scratch library
    • Search the top level schematic and retrieve a list of all the sub-cells along with their library name
    • Use the cphSetCellForceDescend command in a loop to add the required forceDescend param to every cellview found in the schematic hiearchy.
    • Use the lxGenFromSource command to generate the layouts.

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