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is it possible to extract the subcircuit names/models and the associated pins from input.scs ?

marcelpreda

Hi there,

I have the netlist file input.scs , on top is spectre but may include hspice files.

I need a script/utility/command to extract from the entire hierarchy all the subcircuit definitions and the associated pin names of for each subcircuit.

The order of pin names should be the same as in netlist.

I assume that somehow spectre is doing all this stuff internally, is there any possibility to dump this info in a flat text file to be parsed after that?

Thank you,

Marcel

Parents
  • Andrew Beckett

    Hi Marcel,

    Add an info analysis such as this into the netlist:

    subcktInf info what=subckts where=file

    (you can do this in ADE via the Outputs->Save All form). 

    This will produce a file called input.info.subckts in the netlist directory (unless you specify a file to write it to) which includes the names of each subckt and the terminals (in order) for each subckt.

    Regards,

    Andrew.

  • marcelpreda
    in reply to Andrew Beckett

    Hi Andrew,

    Thanks a lot, it worked, with the note taht teh name of the file is actually subckts.info.subckts .

    I have next question: for some subcircuits there is no info about teh parameters and pins (they are empty strings).

    My guess is that this is happening for the subcircuits which are not used in my design, but are defined in the model files. Is that true?

    Also, is there any documentation about the format of this file, or a skill API to interrogate this database?

    Best Regards,

    Marcel 

Reply
  • marcelpreda
    in reply to Andrew Beckett

    Hi Andrew,

    Thanks a lot, it worked, with the note taht teh name of the file is actually subckts.info.subckts .

    I have next question: for some subcircuits there is no info about teh parameters and pins (they are empty strings).

    My guess is that this is happening for the subcircuits which are not used in my design, but are defined in the model files. Is that true?

    Also, is there any documentation about the format of this file, or a skill API to interrogate this database?

    Best Regards,

    Marcel 

Children
  • Andrew Beckett
    in reply to marcelpreda

    Hi Marcel,

    The subckts.info.subckts is a "PSF" database that is saved into the psf directory if you have where=rawfile specified - there's an entry on the Outputs->Save All form which saves that by default. If you want to process the PSF results, you can simply do:

    selectResult('subckts) ; to avoid having to add ?results 'subckts on the end of the outputs() or pv() functions below:
    foreach(subckt outputs()
      terminals=pv(subckt "subckt_terminals")
      params=pv(subckt "subckt_params")
      unless(blankstrp(terminals)
        printf("%s : %s : %s\n" subckt terminals params)
      )
    )

    You're right - unused subckts (e.g. from model files) are output with an empty terminal list.

    Regards,

    Andrew.

  • marcelpreda
    in reply to Andrew Beckett

    Hi Andrew,

    Thanks again.

    You are very kind, not too much work left for me: I just had to copy->paste :)

    Best Regards,

    Marcel

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