如何自动添加dummy

mm8880992 · 发表于 2014-1-15 19:44:48

求助：现在想在layout中自动添加dummy metal，有哪些办法？请大虾现身指教

jurcy · 发表于 2014-1-15 19:44:49

不管是用那一种软件, 大致上的做法是:
1. 用 dummy metal shape填满整个 design
2. Sizing up Metal shapes by space rule
3. 把dummy metal shape有碰到第一步的结果的删除掉

Here  is the example for a flatten design
============================================
cvid=geGetEditCellView();
DummySpace=8.0; dummy to dummy space rule
Shape2Dummy=10.0; Shapes to dummy space rule
metal1_shapes=setof(x,cvid~>shapes,x~>lpp==list("M1" "drawing"));
dummyWidth=15.0; Dummy shape width
dummyHeight=15.0; Dummy shape height
dummypitchX=dummyWidth+DummySpace;
dummypitchY=dummyHeight+DummySpace;
ColNumber=int((rightEdge(cvid~>bBox)-leftEdge(cvid~>bBox)+DummySpace)/dummypitchX);
RowNumber=int((topEdge(cvid~>bBox)-bottomEdge(cvid~>bBox)+DummySpace)/dummypitchY);
dummuList=nil;
x0=leftEdge(cvid~>bBox);
y0=bottomEdge(cvid~>bBox)
for(i 0 RowNumber
   for(j 0 ColNumber
         dummyId=dbCreateRect(cvid list("M1" "dummy") list(x0+j*dummypitchX:y0+i*dummypitchY x0+j*dummypitchX+dummyWidth:y0+i*dummypitchY+dummyHeight));
         dummuList=append1(dummuList,dummyId);
   )
)
SizedResult=dbLayerSize(cvid,list("M1" "drawing"),metal1_shapes,Shape2Dummy)
foreach(obj SizedResult
   OverlapDummy=dbGetTrueOverlaps(cvid,obj~>bBox,list("M1" "dummy"))
   foreach(dmy OverlapDummy
      dbDeleteObject(dmy)
   )
   dbDeleteObject(obj)
)
[img][/img]