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How to set Referenced Cset of a NetClass by skill (allegro16.3)

stillfish

I follow the document's description of axlNetClassCreate() function :

blah blah.........Netclasses can be constrainted by assigning csets
via the PHYSICAL_CONSTRAINT_SET, SPACING_CONSTRAINT_SET or
ELECTRICAL_CONSTRAINT_SET. Same Net constraints shares the same domain with the
SPACING_CONSTRAINT_SET.

And I use axlDBAddProp with SPACING_CONSTRAINT_SET to add property of a NetClass.
But when i open constraint manager , the NetClass does not change its referenced spacing C set.

Is there any method to set the reference Cset by skill?

  • Hi

    To my knowledge this can only be accomplished using scripts. I've done this with success using the following procedure and procedure call. Procedure creates Netclass in domains and assigns csets.

    ns_map_cset2netclass(spacingCset recordid physicalCset)

     ; --------  arg1 = spacing Cset name, arg2 = Netclassname, arg3 = Physical Cset name
    procedure( ns_map_cset2netclass( arg1 arg2 arg3)
    let((nc_domains)
      nc_domains = '(spacing physical)
      axlNetClassCreate(arg2 nc_domains)

      fprintf(tmp_file "cm startTransaction ( Design \"%s\" ) ( \"Net Class\" \"%s\" ) TS_DEFER\n" axlCurrentDesign() arg2)
      fprintf(tmp_file "cm add ( \"Net Class\" \"%s\" ) to ( \"Spacing CSet\" \"%s\" )\n" arg2 arg1)
      fprintf(tmp_file "cm commitTransaction ( Design \"%s\" ) ( \"Net Class\" \"%s\" ) TS_DEFER\n" axlCurrentDesign() arg2)

      fprintf(tmp_file "cm startTransaction ( Design \"%s\" ) ( \"Net Class\" \"%s\" ) TS_DEFER\n" axlCurrentDesign() arg2)
      fprintf(tmp_file "cm add ( \"Net Class\" \"%s\" ) to ( \"Physical CSet\" \"%s\" )\n" arg2 arg3)
      fprintf(tmp_file "cm commitTransaction ( Design \"%s\" ) ( \"Net Class\" \"%s\" ) TS_DEFER\n" axlCurrentDesign() arg2)

     )
    ); end procedure

     

    Best regards

    Ole

  • Thanks for your reply,  it is helpful for me to finish my tasks.

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