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Use abe function to do layer XOR for two instances

Martinsh

There are two instances inst1 and inst2 in current cellview (cv). I'd like to do XOR for layer M1 in inst1 and inst2. After that, highlight the XOR result on inst1.

How to realize this with the abe functions?

Thanks.

Martin 

  • Martin,

    This should do what you want:

    /*************************************************************************
*                                                                        *
* CCFxorLayerInTwoInsts(i1 i2 layerName [?hilightLPP '("y0" "drawing")]) *
*                                                                        *
*   Given two instance ids, XOR the two (uses a scratch cellView) and    *
*     create a hilight set with the differences at the i1 location.      *
*                        Returns the hilight set.                        *
*                                                                        *
*************************************************************************/

procedure(CCFxorLayerInTwoInsts(i1 i2 layerName @key 
      (hilightLPP '("y0" "drawing")))
  letseq((
      (cv i1~>cellView)
      (scr dbOpenScratchDesign(cv~>libName "maskLayout"))
      i1temp l1 l2 xor hs
      )
    ; copy first instance and get abeLayer
    i1temp=dbCopyFig(i1 scr)
    abeInit(scr)
    ; just in case something goes wrong, ensure
    ; that abeDone is always called
    unwindProtect(
      {
        l1=abeLayerFromCellView(layerName)
        ; delete first instance and create second instance at
        ; same origin/orientation, and get abeLayer
        dbDeleteObject(i1temp)
        dbCreateInst(scr i2~>master "" i1~>xy i1~>orient)
        l2=abeLayerFromCellView(layerName)
        ; xor and output hilightSet in original cellView
        xor=abeNewLayer()
        abeLayerXor(l1 l2 xor)
        hs=geCreateHilightSet(cv hilightLPP)
        hs~>enable=t
        abeLayerToHilightSet(xor hs)
      }
      abeDone()
    )
    hs
  )
)

    Andrew

  • in reply to Andrew Beckett

    Andrew,

    Good idea. Thanks!

    Martin

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