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PG Text

icartist

I am on 6.1.7.

I've been away from Virtuoso for a number of years and now need to create Rev marks, etc but find no way to do so in the newest version of the tool.

It used to be that there was a PG text script so the layout designer could easily create copyright, rev marks, etc.

What happened?

Is there an equivalent solution in the 6x versions?

Do I have to go find an ancient program and try to make it work?

Yes I suggest Cadence add this in the Tools Menu!

Katy

  • Quek

    Hi Katy

    Hope that the info in COS article 11380652 can help to resolve your problem.


    Best regards
    Quek

  • Quantum Chip
    in reply to Quek

    It seems like this does not work in 6.18. The PG Text window works, but after hitting ok, the following error message is given:

    "*Error* quotient: can't handle (555.0 / nil)" 

    Is there any workaround, or is this just no longer a feature in 6.18? 

  • Quek
    in reply to Quantum Chip

    Hi Quantum Chip

    I have just done some testing using IC618-500-5. PG text is still working fine. You might want to provide more details on the problem or to file a case to your local support centre so that they can check on it.


    Best regards
    Quek

  • Andrew Beckett
    in reply to Quek

    In addition, it might give some useful clues if you do:

    _stacktrace=50
    tracelength=50

    and then you will hopefully get a stack trace in the CIW with more detail that might help debug the issue.

    Regards,

    Andrew.

  • Quantum Chip
    in reply to Andrew Beckett

    Hi Andrew, Quek,

    Thanks for your response. Doing some further debugging, it seems that this function does work when I use it in a 65nm TSCM tech file layout, but is not working when done using my much simpler 7-layer custom MEMS tech file. I'm not sure why. This is using IC6.1.8-500-5. Running the suggested stack trace gives: 

    *Error* quotient: can't handle (572.0 / nil)
    <<< Stack Trace >>>
    (... in _leTbPointSnap ...)
    (... in _leTbPenStroke ...)
    (... in _leTbVectorText ...)
    (... in _leTbPGTextInternal ...)
    (... in _leCreatePGText ...)
    _leCreatePGText()

    Could be something related to the manufacturing grid?

    However, I ended up throwing together some alternative custom code for this purpose over the weekend as I wanted a pcell implementation of this anyway. This is meeting my needs at this point, so it may not be worth your time to try and debug a somewhat niche bug here. Thanks for your help, regardless. 

  • Quek
    in reply to Quantum Chip

    Hi Quantum Chip

    I think you may be right about the manufacturing grid. Assuming that the manufacturing grid for the MEMS techfile is 0.001, would you please execute the following in CIW and let us know if it helps?

    a. Execute the following in CIW
    tf=techGetTechFile(ddGetObj("yourMemsTechLib"))
    techSetMfgGridResolution(tf 0.001)

    b. Re-try PG text


    Best regards

    Quek

  • Quantum Chip
    in reply to Quek

    That fixed it! Thanks a lot.

  • Quek
    in reply to Quantum Chip

    That's great. : )   A more complete fix would be to add the grid value to the "controls' section of your MEMS techfile and re-compile it. E.g.

    controls(
       ...
       mfgGridResolution( (0.001) )
       ...
    )

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