• Cadence Virtuoso locks up intermittently when running Calibre RealTime

    If you're experiencing intermittent issues with Cadence Virtuoso hanging while using Calibre RealTime, this TechNote may be of interest to you. It describes certain conditions it may happen under and specific things y...
    chris_balcom
    last modified by chris_balcom
  • Find area of input layer to DENSITY check

    Wondering how to see the actual area of a layer that was used in a DENSITY check? It might not be there by default in your RDB output file from the DRC run but there are a few things you can add to the check so that y...
    chris_balcom
    last modified by chris_balcom
  • Output both ASCII and GDS results in a DRC run

    DRC errors are usually output in ASCII format for easy highlighting with RVE but sometimes people want to have output that can be opened in a layout editor. It's possible to create ASCII and GDS at the same time in th...
    chris_balcom
    last modified by chris_balcom
  • Nothing in Layout message when using LVS BOX with no DEVICEs

    If you're trying to run LVS with only box cells (and with no layout devices expected anywhere in the design) and your run fails with a message like this:   "ERROR Nothing in Layout"   This TechNote describ...
    chris_balcom
    last modified by chris_balcom
  • RVE trying to open lower level cell to highlight result

    If RVE is asking you to open a lower level cell to highlight a result when you were expecting it to just highlight at the top level, this TechNote contains descriptions of possible causes and solutions.
    chris_balcom
    last modified by chris_balcom
  • Calibre 2014.3 Release Highlights

    Key 2014.3 Highlights Please join our technical team as they review the new features of the 2014.3 Calibre Design Solutions release: Physical Verification ( View release highlights video - 4 minutes ) Calibre® ...
    burr_shaw
    last modified by burr_shaw
  • DESIGNrev scripts, a few basic templates

    Wondering how to use DESIGNrev Tcl commands with scripts in batch mode?   Here are some very simple templates you can use to get started.     For command-line execution with user input:   #====...
    chris_balcom
    last modified by chris_balcom
  • Creating a Tcl script from DESIGNrev session transcript

    Here are some steps showing how to create a Tcl script based on operations and edits that have been done in a DESIGNrev session,   On the DESIGNrev pulldown menu, select:        File &g...
    chris_balcom
    last modified by chris_balcom
  • How to get the file handle of the layout in DESIGNrev (for use in a Tcl script)

    Getting the file handle of the layout currently visible in DESIGNrev is frequently needed for use in Tcl batch scripts. Here's an example showing one way to create a layout file handle in DESIGNrev.   To get the...
    chris_balcom
    last modified by chris_balcom
  • Setting user preferences for DESIGNrev

    User preferences for DESIGNrev can be set by using pulldown menu choices. Use any selection on the Options tab to bring up the Preferences dialog. The changes are saved to a file. The default path and filename for thi...
    chris_balcom
    last modified by chris_balcom
  • Display just the polygons of a certain net in a DESIGNrev layout

    It's possible within the DESIGNrev layout viewer to select a net and view it.   (This is different than using the NET operation in DRC or ERC rulechecks to create output that is then viewed using RVE and DESIGNr...
    chris_balcom
    last modified by chris_balcom
  • Set up DESIGNrev for OpenAccess Input

    The following shows the setup needed to open an OpenAccess design in DESIGNrev   1) Before launching DESIGNrev set the following environment variables:    CDS_INST_DIR    <path to Cade...
    bill_drezen
    last modified by bill_drezen
  • Using DESIGNrev to report all layers in GDS/OASIS file

    You can use the "layout peek" command in DESIGNrev to output design layers.   For instance, the example below shows the design contains layer 1 datatype 1 and  layer 2 datatype 0.   >calibredrv -a ...
    chung_lee
    last modified by chung_lee
  • Find cells referenced but undefined in a layout

    Use the -undefcells switch in DESIGNrev to list cells referenced but not defined.   For instance, >calibredrv  -a puts [layout peek design.gds -undefcells]
    chung_lee
    last modified by chung_lee
  • Load Calibre Menu in Virtuoso

    Add one of the following lines to the default Cadence startup file (.cdsinit), depending on your installation:   • Standard installation  (Virtuoso 5.x and earlier)   load( strcat( getShellEnvVar...
    bill_drezen
    last modified by bill_drezen
  • Clips feature more accurately shares exact coordinate windows in Workbench or DesignRev

    A way to more accurately share exact coordinate windows in WORKbench using Clips feature. (Not to be confused with SVRF command "LAYOUT WINDOW CLIP YES")   Sometimes it is difficult to share coordinates of a ...
    brent_beebe
    last modified by brent_beebe
  • Disable automatic redraw in DESIGNrev

    Starting with the Calibre 2012.1 release there is no need to halt or disable automatic refresh. There is new DESIGNrev drawing behavior that does not block the user interface so that drawing happens entirely in the b...
    bill_drezen
    last modified by bill_drezen
  • Cell map for Layout Export

    Is there a cell map option in the Calibre Integration GUI? There is a setup entry available in Calibre Interactive when OPENACCESS is selected as the layout system. The option is available under (for example, DRC):&...
    bill_drezen
    last modified by bill_drezen
  • layout filemerge from command line

    The following is an example of a script that will merge 2 layout files using the DESIGNrev Tcl batch commands that accept user input.   The usage is as follows: $MGC_HOME/bin/calibredrv <filename>.tcl <...
    bill_drezen
    last modified by bill_drezen
  • Path converted to polygon in Calibre DESIGNrev

    The default behavior is to convert paths to polygons on reading the layout into Calibre DESIGNrev.   To keep paths from being converted, do one of the following: A) In Calibre DESIGNrev use File > Open Layout...
    burr_shaw
    last modified by burr_shaw