lceAddSimpleStopLayers

lceAddSimpleStopLayers(
libName
l_LayerNamePairs
)
=> x_derivedLayers / nil

Description

Adds simple derived layers to the validLayers section of the technology file that has the virtuosoDefaultExtractorSetup constraint group defined. This SKILL function can be useful for adding simple stop layers in memory when the technology file cannot be edited on disk. If a stop layer is added and the second layer has an unknown material, the material is automatically changed to recognition. If you add an invalid stop layer, you must close the design or launch a new Virtuoso session to refresh the memory.

Arguments

libName	Name of the library for which simple derived layers need to be added to the technology file.
l_LayerNamePairs	List of layer-name pairs that need to be added to the validLayers section of the technology file for the specified library.

Value Returned

x_derivedLayers	The number of derived stop layers added to the technology file.
nil	The command failed.

Example

lceAddSimpleStopLayers
("gpdk090" list(list("Oxide" "Poly") list("Metal1" "M1Resdum")))

Adds simple derived layers to the validLayers section of the gpdk090 library.

procedure(lceAddSimpleStopLayers(libName layerNamePairs)

(let (result(0) lib tech cg constraints validLayers num max layer1 layer2 derived stop)

;; Use SKILL lceAddSimpleStopLayers

;;     to libName tech adds in memory derived stop layers for each layerNamePair

;;     and adds the derived stop layers to the virtuosoDefaultExtractorSetup

;;     If a stop layer is added and the second layer has material unknown, it is

;;     changed to material recognition

;;     returns the number of derived stop layers added

lib = ddGetObj(libName)

when( lib

tech = techGetTechFile(lib)

when( tech 

cg = cstFindConstraintGroupIn(tech "virtuosoDefaultExtractorSetup")

tech        = cg~>tech 

constraints = cg~>objects

when( tech && constraints

validLayers = car(setof(constraint constraints if(constraint~>defName == "validLayers" t)))

when( validLayers

num = 1000

max = num * 2

foreach( pair layerNamePairs

layer1 = nth(0 pair)

layer2 = nth(1 pair)

when( stringp(layer1) && 

stringp(layer2) &&

layer1 != layer2 &&

techFindLayer(tech layer1) &&

techFindLayer(tech layer2)

sprintf(derived "lceAddSimpleStopLayers_%s_%s" layer1 layer2)

while( techGetLayerName(tech num) && num < max   

num = num + 1

)

when( num < max && 

techCreateDerivedLayer(tech num derived layer1 "not" layer2)

validLayers~>value = cons(derived validLayers~>value)

stop = techFindLayer(tech layer2)

when( stop~>material == "unknown"

stop~>material = "recognition"

)

result = result + 1

)

)

)

) 

)

)

)

result

)

)

The procedure below illustrates how the lceAddSimpleStopLayers SKILL function can be used to add simple stop layers.

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