• Skip to main content
  • Skip to search
  • Skip to footer
Cadence Home
  • This search text may be transcribed, used, stored, or accessed by our third-party service providers per our Cookie Policy and Privacy Policy.

  1. Community Forums
  2. Custom IC SKILL
  3. symbol PCELL extraction issue.

Stats

  • Locked Locked
  • Replies 18
  • Subscribers 143
  • Views 19694
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

symbol PCELL extraction issue.

fishbulb15
fishbulb15 over 14 years ago
I have created a symbol, schematic and layout pcell. Everything seemed to be working correctly until I wanted to start LVS-ing the the pcell. I first ran into an issue where it required that my schematic be extracted since last edit. So I followed the instructions here: ___Schematic PCell: Schematic cellviews modified since last extracted___ support.cadence.com/.../ ------->Which seemed to solve that issue. But now I am getting "ERROR: Netlister: symbol of instance modified, please re-extract cell ''." Is there something like : dbCreateProp(pcCellView "schGeometryLastRecorded" "time" getCurrentTime() ) dbCreateProp(pcCellView "lastSchematicExtraction" "time" getCurrentTime() ) to add to the symbol pcell?? How can I get this to work.. Thank you, Mitchell Cohen
  • Cancel
Parents
  • Andrew Beckett
    Andrew Beckett over 14 years ago

    In IC5141 it's a matter of setting cv~>instancesLastChanged to be an old date - so it appears that the symbol hasn't changed. That said, I've not normally had to do this with a pcell - so I'm a bit surprised...

    You'd do:

    dbDisableCellViewCounter(pcCellView)
    dbReplaceProp(cv "instancesLastChanged" 'time "Jun 27 18:00:00 1999")

    or similar. 

    In IC615, you'd just put dbDisableCellViewCounter(pcCellView) at the beginning of the pcell code.

    Regards,

    Andrew.

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
Reply
  • Andrew Beckett
    Andrew Beckett over 14 years ago

    In IC5141 it's a matter of setting cv~>instancesLastChanged to be an old date - so it appears that the symbol hasn't changed. That said, I've not normally had to do this with a pcell - so I'm a bit surprised...

    You'd do:

    dbDisableCellViewCounter(pcCellView)
    dbReplaceProp(cv "instancesLastChanged" 'time "Jun 27 18:00:00 1999")

    or similar. 

    In IC615, you'd just put dbDisableCellViewCounter(pcCellView) at the beginning of the pcell code.

    Regards,

    Andrew.

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.

© 2025 Cadence Design Systems, Inc. All Rights Reserved.

  • Terms of Use
  • Privacy
  • Cookie Policy
  • US Trademarks
  • Do Not Sell or Share My Personal Information