Display packet information 'display' not found.

Dear cadence team,

i am using cadence virtuoso  version: IC6.1.7. When i am trying to open the layout of any in built cell, i got the warning " The display packet information 'M6_drawing' for 'display' was not found." There are more than 70 warning  for all the layers of layout. Can you please  help me with this??

This means that it hasn't found a display.drf file with the definition of that packet. The technology library you are using is defining a layer-purpose pair (presumably M6 drawing) that specifies a particular packet name. The display.drf for a PDK would often be loaded at startup or first access, but maybe not in this case. It may just be looking for it in one of the standard places (typically working directory, home directory and a few others - as defined by the setup.loc file).

Andrew

Which foundry pdk are you using?

Display packet information is defined in the display.drf file supplied with the pdk. Typically this is loaded in the libInit.il file in the process techlib directory. If a copy exists int he workarea this will be used.

 RobMan , Thank you for the response ..  i am using tsmc65 and recently installed it. i don't know where the problem occurs

Dear RobMan , yes i have  dispay.drf file in techfile folder. but where i have to copy it. can you please tell me ??

Thank you  Andrew Beckett , display. drf file is already there in the pdk installation path but don't know why this warning occur and what to  do the next!!

A quick fix would be to copy it to your working directory.

TSMC typically use libInit.il to load. Look in <PDKpath>/tsmcN65/libInit.il. Search for display.drf and check it's loaded.

RobMan , when i checked liblnit.il , this content is writtten in the file .

    ;Load display file ----------------------------------------------------------------------
    filePath = sprintf(nil "%s/display.drf" getWorkingDir())
    if( isFile( filePath) then
       printf("Loading Working place Display File '%s'\n" filePath)
    else
       filePath = sprintf(nil "%s/../display.drf" libPath)
       when( isFile(filePath)
           when( isCallable( 'drLoadDrf)
               printf("Loading PDK Display File '%s'\n" filePath)
               drLoadDrf(filePath)
      );when(drLoadDrf)
    );when(isFile)
    );if(isFile)

Yes, so this loads the display.drf from the working directory or the directory above the library path.

If the display.drf is loaded and you still get errors then the techlib and display information are potentially out of sync. i.e. Layers have been added to the techlib but no corresponding update to the display information. Any undefined layers will appear yellow on the canvas.

RobMan  , Yes the above error is removed after copying the display.drf file in my working directory . However when i try to do "generate from source" i got the error "pcell evaluation failed". Please suggest how to rectify this problem.

thank  you