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I just started cadence couple of days back for designing my patterns, I wanted to subtract two layers and already wrote a code but not sure its a right one or not. Could anyone help me please and let me know is this a right on or not,
load("/usr/cdscad/libw/utils/rectw.il")procedure( subtraction( @optional origin ww tlength outlayer)(prog (xx yy np xo yo lw) subl1 = nil subl2 = nil xo = xCoord(origin) yo = yCoord(origin) ;; Draw First rect Layer xx = xo yy = yo-ww/2.0 r = rectw(xx yy tlength ww "metal1") subl1 = append(subl1, list(r));; Draw Second rect Layer xx = xo yy = yo-ww/2.0 r = rectw(xx yy tlength ww "metal2") subl2 = append(subl2, list(r))dbLayerAndNot((getEditRep) outlayer subl1 subl2))
You may want to submit this question to the Custom IC Skill Forum, if you are using a Cadence IC tool.
If you are programming to the SPB Allegro board tool then you will want to look at the axlPolyOperation API since your example code is written using the Cadence IC set of APIs which are not suport by the Allegro tool.
In reply to fxffxf:
Thanks a lot Fxffxf