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Backward Compatible Skill Scripts

TjaartOpperman
I'm writing some Skill scripts that need to be backward compatible with older versions of cadence, mostly for some designs that aren't yet ported from IC5. I've been looking at the getVersion() and getVersion(t) commands, but it seems like it would require some complicated string manipulation functions. I'm cautious of these since they not always work reliably if not properly tested. Is there perhaps an easier way of getting the Cadence version number into variables?

  • Hi TjaartOpperman

    Actually it is not too complicate to determine the version of Virtuoso based on the output of getVersion() cmd. You can use something similar to:

    if( rexMatchp("6.1" getVersion()) then
       icVersion="61"
    else
       icVersion="51"
    ) ;if

    You can also make use of the database format. E.g.

    case( dbGetDatabaseType()
       ("CDBA" icVersion="51")
       ("OpenAccess" icVersion="61")
    ) ;case

    Hope that I am understanding your question correctly. Perhaps you can elaborate more on the problems which you have encountered.


    Best regards
    Quek

  •  I've been using this function for 17 years now (slight change in 1996 to support a subtle change then): 

    /***************************************************************
    *                                                              *
    *                     (abGetVersionNumber)                     *
    *                                                              *
    *                Get the Cadence version number                *
    *                                                              *
    ***************************************************************/

    (procedure (abGetVersionNumber)
      (let ((parsed (parseString (getVersion))))
           /* in 4.4 onwards, version string is slightly different */
           (if (equal (caddr parsed) "version")
    	   (cadddr parsed)
    	   (caddr parsed)
    	   )))

     Regards,

    Andrew.

  • Thanks Andrew, I'll be using the following to do comparison: sscanf(buildString(parseString(abGetVersionNumber() ".") " ") "%d%d%d" ver sub subsub)

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