modify schematic net expressions with skill

Discussion in 'Cadence' started by danmc, Aug 23, 2006.

  1. danmc

    danmc Guest

    Hello,

    I have a bunch of schematics that all have a couple of labels on wires
    which are net expressions. I want to change what the default net is
    (VDD! -> vdd!). I can't seem to figure out how to do this with skill.
    I tried

    cv = dbOpenCellViewByType( "myLib" "myCell" "schematic" "" "a")
    foreach( sig dbGetCellViewInheritedSig(cv)
    ne = dbGetSigNetExpr( sig )
    dat = dbParseSigNetExpr( ne )
    scope = nth(0, dat)
    prop = nth(1, dat)
    str = nth(2, dat)
    defnet = nth(3, dat)

    cond(
    ( (prop == "VSS") defnet = "vss!")
    ( (prop == "VDD") defnet = "vdd!")
    )

    new = sprintf(nil, "[%s%s:%s:%s]", scope, prop, str, defnet)


    dbReplaceSigNetExpr( sig new) )
    )

    schCheck( cv )
    dbSave( cv )

    but that isn't quite right. The dbReplaceSigNetExpr() call returns
    "t", but I don't see any change to my schematic.

    Thanks
    -Dan
     
    danmc, Aug 23, 2006
    #1
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