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Regarding selection of metal layers

Ravi Shanker

 Hi All,

I am working on a code to generate vias automatically and am stuck at a point.

can somebody please help me with a command which will give me the coordinates of the overlapping corners of bothe the metal layers. a skill code will also help. the virtuoso version used is 6.1.4

I know that there is a option for the same in this version but still want to generate a code universally applicable to all versions of virtuoso.

  • hi ravi, With what i have understood from your post , I suppose the following part of the code should help your purpose, I think you can use dbLayerAnd function to find the overlap area by passing the list co-ordinates of the rectangles you have selected using the bind keys. My solution would be using a bind key to select a metal to get its coordinates .....and an another bind key to get the coordinates of the other metal and the same can be used to put the via.. procedure(layerfirst(VO) ------------> bindkey 1 list1=geGetSelSet() ;;list of metal1 enclosure metal1=car(geGetSelSet()~> layerName) ) procedure(layersec(VI) ------------------> bindkey 2 list2=geGetSelSet() ;;list of metal2 enclosure metal2=car(geGetSelSet()~>layerName) cvID=geGetWindowCellView() carea=dbLayerAnd(cvID "ref" list1 list2) hope this should help u in getting an idea and there are other functions like dbGetOverlaps and dbGetTrueOverlaps regards, MANJ

  • Hi,

    Thanks a lot for you help.Amazing with your help we could sizably reduce the code.

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