Stats

  • Locked Locked
  • Replies 4
  • Subscribers 143
  • Views 14164
  • 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

Memory only scratch view

theopaone

Has a memory only scratch view ever been implemented in Virtuoso or do we still have to have a writable library to create one?

Previous post from about 6 years ago

http://community.cadence.com/cadence_technology_forums/f/48/t/14177

Ted

Parents

  • Thanks Andrew

    The documentation was talking about views and I was just trying to keep from having to create a new library.

    For those who are interested in using scratch cell architecture, here is what I am implementing:

    I will set it up when the "UseScratchLib.ils" package is loaded by a libInit so it will create a new scratch library in the user's temp directory.

    The pointers to the library and any open cellViews will be kept as private variables in a closure. The code must check for valid library and cellView when creating/accessing data.

    Data will be copied into the scratch cellView and out back into the live cellView as necessary.

    The scratch library will be deleted when Virtuoso is exited. It will be removed from the cds.lib file as well.

    This should work even in non graphics mode or when translating to GDS2.

    Ted

Reply

  • Thanks Andrew

    The documentation was talking about views and I was just trying to keep from having to create a new library.

    For those who are interested in using scratch cell architecture, here is what I am implementing:

    I will set it up when the "UseScratchLib.ils" package is loaded by a libInit so it will create a new scratch library in the user's temp directory.

    The pointers to the library and any open cellViews will be kept as private variables in a closure. The code must check for valid library and cellView when creating/accessing data.

    Data will be copied into the scratch cellView and out back into the live cellView as necessary.

    The scratch library will be deleted when Virtuoso is exited. It will be removed from the cds.lib file as well.

    This should work even in non graphics mode or when translating to GDS2.

    Ted

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.