Stats

  • Locked Locked
  • Replies 4
  • Subscribers 142
  • Views 5910
  • 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

Number of instaces in schematic.

Serjik

Hi all.

I've got a cell, which consists of many cells (some of them are repeated). For example there are 10 instA and 15 instB (they are all separate cells). How can I delete a certain number of empty cells, for example 4 instA and 3 instB.

Regards,

Sergey.

  • Hi Sergey,

    Your question does not really contain enough information to even start an answer. What type of cell, layout or schematic for instance? What do you mean by an empty cell, and if a cell was 'empty' (e.g. the cell that was used for instA) wouldn't all instances be the same (i.e. all 10 of instA not just 4). There are too many questions about your question to offer any suggestions, please clarify.

    Regards,
    Lawrence.

  • Hi, Lawrence.

    I'm talking about schematic. The cells are not empty, they are separate. For example, 10 the same pmos transistors and 15 the same nmos transistors. After that I read from the file information about how many cells of what type I need to delete (how to read from the file is clearly). The question is how to delete a certain number of identical cells.

    Regards,

    Sergey.

  • Sergey,

    It's a strange (and confusing) request, but I'm guessing something like (the variables theLibName and theCellName are to indicate what it is you're trying to delete). cv is the cellView id you're working on.

    instHeader=car(exists(instH cv~>instHeaders instH~>libName==theLibName && instH~>cellName==theCellName))
    numToDelete=4
    instances=instHeader~>instances
    while(numToDelete>0 && instances
      numToDelete--
      dbDeleteObject(car(instances))
      instances=cdr(instances)
    )

    Regards,

    Andrew.

  • Thanks Andrew, that's exactly what I need.

    Regards,

    Sergey.

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.