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How do I test a selected device to see if it is a transistor?

Michael L

I have a bit of code that will toggle a couple different properties to selected transistors.  That part of the program works fine.  My question is, how can I test to make sure the selected devices are transistors?  Right now, it will apply the properties to anything selected.

I would like to avoid looking for the existence of W and L, because I don't want resistors to give a false good.  Is there a way to do that?

  • Hi Michael,

    You could test the instance's cellName and use regular expressions to match the name (using either rexMatchp() or pcreMatchp(), for example), or you could look for another property that is unique to the transistors - here you may need to go to the cell master and look at the CDF parameters there, since the properties may not exist on the instance itself.

    I don't have a code example to hand to demonstrate this, but you can get to the master from the instance directly (if this is schematic that should sufficient, but if a layout you may need to go to the superMaster).

    Hope this helps!
    Lawrence.

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