[Cyan]<DATools6.1>Spinifex23>SXCMosBImpl.mesa!5

SXCMosBImpl.mesa

Written by gbb, November 25, 1985 6:36:23 pm PST

Last edited by: gbb June 10, 1986 6:54:54 pm PDT

DIRECTORY

CD USING [InstanceList, InterestRect, Layer, Number, Position, Rect],

CDAtomicObjects USING [AtomicObsPtr, DrawList],

CDBasics USING [empty, Extend, highposition, minposition, NonEmpty, RectAt, ToRect],

CDOrient USING [MapPoint],

CDProperties USING [GetInstanceProp],

CDSimpleRules USING [MinDist, MinWidth],

CMosB USING [bur, cmosB, cut, cut2, lambda, met, met2, ndif, nwell, nwellCont, pdif, pol, pwell, pwellCont, wellSurround, wndif, wpdif],

IO USING [atom, char, int, Put, PutF, PutFR, PutRope, rope],

PropertyLists USING [GetProp, PutProp],

Rope USING [Cat, ROPE],

SX USING [AddBox, AddRect, AdjustNode, AttachedNode, BoxMapProc, CellPostProcessProc, Circuit, CircuitNode, CombineNodePropertyProc, Constraint, ConstraintArray, ConstraintIndex, ConstraintResolution, ConversionProc, CreateLinkage, FindRootNode, GeometricRule, IllegalConstruct, LinkageAttach, LookupNode, nodeIndex, NodeLinkage, spaceIndex, SpinifexLayerIndex, techCIndexBase, TechHandle, violateIndex],

SXAccess USING [invocation, sxTech],

SXAccessInternal USING [PutError],

SXAtoms USING [crystalAttr],

SXOutput USING [LinkageHousekeeper, LinkagePrintProc],

SXOutputPrivate USING [GetANaming, NameTransType, Naming, PrintNaming, PrintRoseInstantiationTransformation, UnNameTransType],

SXTechnology USING [ESWGrow, GetCircuitFromCDObject, NESGrow, PerDrawRectProc, RegisterSpinifexObjectProcs, RegisterTechnologyHandle, ResolutionTable, SetUpResolution, WNEGrow, WNGrow],

TerminalIO USING [WriteRope];

SXCMosBImpl: CEDAR PROGRAM

IMPORTS CD, CDBasics, CDOrient, CDProperties, CDSimpleRules, CMosB, IO, PropertyLists, Rope, SX, SXAccess, SXAccessInternal, SXAtoms, SXOutputPrivate, SXTechnology, TerminalIO

~ BEGIN

Basic definitions and rules

l: CD.Number ~ CMosB.lambda;

Nodes: TYPE = LIST OF REF SX.CircuitNode;

ConstraintArray: TYPE ~ SX.ConstraintArray;

CIndex: TYPE ~ SX.ConstraintIndex;

Constraint: TYPE ~ SX.Constraint;

ndif summary

N é P: MinDist [ndif, pdif] / l => 10

N é N: MinDist [ndif, ndif] / l => 3ý

P é P: MinDist [pdif, pdif] / l => 3ý

N é N-well: MinDist [ndif, nwell] / l => 5

P é P-well: MinDist [pdif, pwell] / l => 5

N é P-well-contact: MinDist [ndif, pwellCont] / l => 3ý [rules 6.3.6 + 6.3.7]

P é N-well-contact: MinDist [pdif, nwellCont] / l => 3ý [rules 6.3.6 + 6.3.7]

N é N-well-contact: MinDist [ndif, nwellCont] / l => 9

P é P-well-contact: MinDist [pdif, pwellCont] / l => 9

N-well é P-well-contact: MinDist [nwell, pwellCont] / l => 4 [rule 6.3.9]

P-well é N-well-contact: MinDist [pwell, nwellCont] / l => 4 [rule 6.3.9]

N-well-contact é P-well-contact: MinDist [nwellCont, pwellCont] / l => 8 [rule 6.3.6]

ndif layer

ndifSpacing: CD.Number = CDSimpleRules.MinDist [CMosB.ndif, CMosB.ndif]; -- (3ý l)

ndifWidth: CD.Number = CDSimpleRules.MinWidth [CMosB.ndif];

ndifUncSubtrContSpacing: CD.Number = CDSimpleRules.MinDist [CMosB.ndif, CMosB.pwellCont];

n-Diffusion/unconnected p-substrate-contact spacing (3ý l)

ndifInnWell: CD.Number = 0 * l;

n-Diffusion in n-Well (0 l)

ndifpSubstrCont: CD.Number = CDSimpleRules.MinDist [CMosB.ndif, CMosB.pwellCont];

n-Diffusion and p-substrate-contact (3ý l)

pdif layer

pdifSpacing: CD.Number = CDSimpleRules.MinDist [CMosB.pdif, CMosB.pdif]; -- (3ý l)

pdifWidth: CD.Number = CDSimpleRules.MinWidth [CMosB.pdif];

pdifUncnWellSpacing: CD.Number = CDSimpleRules.MinDist [CMosB.pdif, CMosB.nwellCont];

p-Diffusion/unconnected n-Well-contact spacing (3ý l)

pdifnWellCont: CD.Number = 0 * l;

p-Diffusion and n-Well-contact

pol layer

polSpacing: CD.Number = CDSimpleRules.MinDist [CMosB.pol, CMosB.pol];

polWidth: CD.Number = CDSimpleRules.MinWidth [CMosB.pol];

polUncDifSpacing: CD.Number = CDSimpleRules.MinDist [CMosB.pol, CMosB.ndif];

Poly/unconnected Diffusion spacing (1 l)

polDiffUncPolySpacing: CD.Number = CDSimpleRules.MinDist [CMosB.ndif, CMosB.pol];

Diffusion/unconnected Poly spacing (1 l)

polOverDiff: CD.Number = 0 * l;

Poly over Diffusion

met layer

metSeparation: CD.Number = CDSimpleRules.MinDist [CMosB.met, CMosB.met];

metWidth: CD.Number = CDSimpleRules.MinWidth [CMosB.met];

metCutCutSpacing: CD.Number = CDSimpleRules.MinDist [CMosB.cut, CMosB.cut];

Cut to Cut spacing (3 l)

metViaViaSpacing: CD.Number = CDSimpleRules.MinDist [CMosB.cut2, CMosB.cut2];

Via to Via spacing (4 l)

metCutViaSpacing: CD.Number = CDSimpleRules.MinDist [CMosB.cut, CMosB.cut2];

Cut to Via spacing (2 l)

met2 layer

met2Separation: CD.Number = CDSimpleRules.MinDist [CMosB.met2, CMosB.met2];

met2Width: CD.Number = CDSimpleRules.MinWidth [CMosB.met2];

Some of these numbers are half of the actual minimum distances we are checking for:

difSep: CD.Number = ndifSpacing / 2; -- (3ý l / 2)

wellSep: CD.Number = CDSimpleRules.MinDist [CMosB.nwell, CMosB.nwell]; -- (10 l)

wellWidth: CD.Number = CDSimpleRules.MinWidth [CMosB.nwell]; -- (12 l)

nDifToWell: CD.Number = CDSimpleRules.MinDist [CMosB.ndif, CMosB.nwell]; -- (5 l)

pDifToWell: CD.Number = CDSimpleRules.MinDist [CMosB.pdif, CMosB.pwell]; -- (5 l)

nDifTopDif: CD.Number = CDSimpleRules.MinDist [CMosB.ndif, CMosB.pdif]; -- (10 l)

pdifUncSubtrContSpacing: CD.Number = CDSimpleRules.MinDist [CMosB.pdif, CMosB.nwellCont]; -- (3ý l)

nDifToSubtrCont: CD.Number = CDSimpleRules.MinDist [CMosB.ndif, CMosB.nwellCont]; -- (9 l)

pDifToSubtrCont: CD.Number = CDSimpleRules.MinDist [CMosB.pdif, CMosB.pwellCont]; -- (9 l)

nDifLayerSep: CD.Number = MAX [difSep, nDifToWell - difSep];

difToPolExtSep: CD.Number = 0;

Layer indices

ndifSpinifex: SX.SpinifexLayerIndex ~ SX.SpinifexLayerIndex.FIRST;

pdifSpinifex: SX.SpinifexLayerIndex ~ ndifSpinifex.SUCC;

polSpinifex: SX.SpinifexLayerIndex ~ pdifSpinifex.SUCC;

metSpinifex: SX.SpinifexLayerIndex ~ polSpinifex.SUCC;

m2Spinifex: SX.SpinifexLayerIndex ~ metSpinifex.SUCC;

wellSpinifex: SX.SpinifexLayerIndex ~ m2Spinifex.SUCC;

Constraints

n-Diffusion constraints.

ndCnstr: REF ConstraintArray ← NEW [ConstraintArray];

ndCh: CIndex ~ SX.techCIndexBase; -- n-Diffusion channel

ndBur: CIndex ~ ndCh.SUCC; -- Buried window here.

ndInWel: CIndex ~ ndBur.SUCC; -- n-Diffusion in n-Well

ndWel: CIndex ~ ndInWel.SUCC; -- Exclude n-Diffusion by n-Well

ndCnt: CIndex ~ ndWel.SUCC; -- n-Diffusion contact here.

ndPWct: CIndex ~ ndCnt.SUCC; -- p-Diffusion contact here.

ndPdErr: CIndex ~ ndPWct.SUCC; -- n-Diffusion & p-Diffusion together => Error.

p-Diffusion constraints

pdCnstr: REF ConstraintArray ← NEW [ConstraintArray];

pdCh: CIndex ~ SX.techCIndexBase; -- p-Diffusion channel

pdNdErr: CIndex ~ pdCh.SUCC; -- p-Diffusion & n-Diffusion together => Error.

pdCnt: CIndex ~ pdNdErr.SUCC; -- p-Diffusion contact here.

pdNWct: CIndex ~ pdCnt.SUCC; -- n-Diffusion contact here.

Poly constraints

polCnstr: REF ConstraintArray ← NEW [ConstraintArray];

pExnD: CIndex ~ SX.techCIndexBase; -- Poly not allowed here because of n-Diffusion.

pExpD: CIndex ~ pExnD.SUCC; -- Poly not allowed here because of p-Diffusion.

pExNdCon: CIndex ~ pExpD.SUCC; -- Poly not allowed here because of n-Diffusion Contact.

pExPdCon: CIndex ~ pExNdCon.SUCC; -- Poly not allowed here because of p-Diffusion Contact.

pChE: CIndex ~ pExPdCon.SUCC; -- Close to Xstr Gate, (Channel Edge).

pDExcl: CIndex ~ pChE.SUCC; -- No n-Diffusion permitted here due to buried contact.

pBur: CIndex ~ pDExcl.SUCC; -- Buried window here.

pBurErr: CIndex ~ pBur.SUCC; -- Buried Error, diffusion emerges from wrong side.

pDxorP: CIndex ~ pBurErr.SUCC; -- Diffusion XOR Poly allowed here.

pDandP: CIndex ~ pDxorP.SUCC; -- Diffusion AND Poly may appear together here.

pDErr: CIndex ~ pDandP.SUCC; -- Poly and Diffusion found together => Error.

Metal constraints

metCnstr: REF ConstraintArray ← NEW [ConstraintArray];

mCut: CIndex ~ SX.techCIndexBase; -- Cut from Metal to dif or pol (bloated).

mVia: CIndex ~ mCut.SUCC; -- Via from Metal to Metal2 (bloated).

mVC: CIndex ~ mVia.SUCC; -- Via and Cut seperated by less than 2 lambda.

Rule Initialisation

InitRules: PROCEDURE [cMosHandle: REF SX.TechHandle] ~ {

Rule: TYPE ~ SX.GeometricRule;

TrigMap: TYPE ~ PACKED ARRAY CIndex OF BOOLEAN ← ALL [FALSE];

spaceRuleTrig, widthRuleTrig, nDifWidRuleTrig, polOverDifTrig1, polDifSepTrig1, polDifSepTrig2, nDifSpaceTrig1A, nDifSpaceTrig1B, nDifSpaceTrig2, pDifSpaceTrig1A, pDifSpaceTrig1B, pDifSpaceTrig2A, pDifSpaceTrig2B, pDifWidTrig, polSpaceTrig, polWidTrig, nDifSepNWellTrig1, nDifSepNWellTrig2, nDifInWellDifTrig1, nDifAndPDifTrig1, pDifAndNDifTrig1, alwaysErrorTrig2, nDifChannelTrig, metViaViaTrig, metCutViaTrig, metCutCutTrig, metSpTrig, metWTrig: TrigMap; -- ALL[FALSE]

detectOpaqueViolation: REF Rule;

Geometric rule triggers.

spaceRuleTrig[SX.nodeIndex] ← TRUE;

widthRuleTrig ← ALL[TRUE];

widthRuleTrig[SX.nodeIndex] ← FALSE;

Corners are defined by union of dif and gate

nDifSpaceTrig1A[SX.nodeIndex] ← TRUE;

nDifSpaceTrig1A[ndCh] ← TRUE;

nDifSpaceTrig1A[ndCnt] ← TRUE;

nDifSpaceTrig1B[ndPWct] ← TRUE;

nDifSpaceTrig2[SX.nodeIndex] ← TRUE;

nDifSpaceTrig2[ndCh] ← FALSE; -- there is no diff at channels

nDifSpaceTrig2[ndCnt] ← TRUE;

nDifSpaceTrig2[ndPWct] ← TRUE;

nDifChannelTrig[ndCh] ← TRUE;

nDifWidRuleTrig ← ALL[TRUE];

nDifWidRuleTrig[SX.nodeIndex] ← FALSE;

nDifWidRuleTrig[ndCnt] ← FALSE;

nDifWidRuleTrig[ndCh] ← FALSE;

Corners are defined by union of dif and gate

pDifSpaceTrig1A[SX.nodeIndex] ← TRUE;

pDifSpaceTrig1A[pdCh] ← TRUE;

pDifSpaceTrig1A[pdCnt] ← TRUE;

pDifSpaceTrig2A[SX.nodeIndex] ← TRUE;

pDifSpaceTrig2A[pdCh] ← FALSE; -- there is no diff at channels

pDifSpaceTrig2A[pdCnt] ← TRUE;

pDifSpaceTrig2A[pdNWct] ← TRUE;

pDifSpaceTrig1B[pdNWct] ← TRUE;

pDifSpaceTrig2B[SX.nodeIndex] ← TRUE;

pDifSpaceTrig2B[pdCnt] ← TRUE;

pDifWidTrig ← ALL[TRUE];

pDifWidTrig[SX.nodeIndex] ← FALSE;

pDifWidTrig[pdCnt] ← FALSE;

nDifSepNWellTrig1[SX.nodeIndex] ← TRUE;

nDifSepNWellTrig2[ndWel] ← TRUE;

polSpaceTrig[SX.nodeIndex] ← TRUE;

polSpaceTrig[pDandP] ← TRUE;

polWidTrig ← ALL[TRUE];

polWidTrig[SX.nodeIndex] ← FALSE;

polWidTrig[pDandP] ← FALSE;

polWidTrig[pDErr] ← FALSE;

polDifSepTrig1 [SX.nodeIndex] ← TRUE;

polDifSepTrig1 [pDandP] ← TRUE;

polDifSepTrig2 [pExnD] ← TRUE;

polDifSepTrig2 [pExpD] ← TRUE;

polDifSepTrig2 [pExNdCon] ← TRUE;

polDifSepTrig2 [pExPdCon] ← TRUE;

Metal

metSpTrig [SX.nodeIndex] ← TRUE;

metSpTrig [mCut] ← TRUE;

metSpTrig [mVia] ← TRUE;

metSpTrig [mVC] ← TRUE;

metWTrig ← ALL [TRUE];

metWTrig [SX.nodeIndex] ← FALSE;

metWTrig [mCut] ← FALSE;

metWTrig [mVia] ← FALSE;

metWTrig [mVC] ← FALSE;

Purely local errors are not handled in a natural manner by my scheme, so for every corner we find in polCnstr[pDErr] we generate an error if there is anything on any layer nearby, of course there is always something so we get our error.

polOverDifTrig1 [pDErr] ← TRUE;

nDifInWellDifTrig1 [ndInWel] ← TRUE;

nDifAndPDifTrig1 [ndPdErr] ← TRUE;

pDifAndNDifTrig1 [pdNdErr] ← TRUE;

metCutCutTrig [mCut] ← TRUE;

metCutViaTrig [mVC] ← TRUE;

metCutViaTrig [mVia] ← TRUE;

metViaViaTrig [mVia] ← TRUE;

alwaysErrorTrig2 ← ALL[TRUE];

The geometric rules.

detectOpaqueViolation ← NEW[ Rule ← [ extent~ l, message~ "Opaque cell boundary violated", trigger1~ ALL[TRUE], trigger2~ ALL[TRUE]]];

We set violateIndex = FALSE, ALL else TRUE so that corner checks face inward, which should result in more logically pleasing error reports.

detectOpaqueViolation.trigger1[SX.violateIndex] ← FALSE;

cMosHandle.rules [ndifSpinifex] ← LIST[

NEW [Rule ← [message~ "n-Diffusion spacing", extent~ ndifSpacing, okIfConnected~ TRUE, trigger1~ nDifSpaceTrig1A, trigger2~ nDifSpaceTrig2]],

NEW [Rule ← [message~ "n-Diffusion/unconnected p-substrate-contact spacing", extent~ ndifUncSubtrContSpacing, okIfConnected~ TRUE, trigger1~ nDifSpaceTrig1B, trigger2~ nDifSpaceTrig2]],

The above two rules are no longer applied to channels.

NEW [Rule ← [message~ "n-Diffusion width", extent~ ndifWidth, trigger1~ nDifWidRuleTrig, trigger2~ nDifWidRuleTrig]],

NEW [Rule ← [message~ "n-Diffusion/n-Well spacing", extent~ nDifToWell, trigger1~ nDifSepNWellTrig1, trigger2~ nDifSepNWellTrig2]],

NEW [Rule ← [message~ "n-Well/n-Diffusion spacing", extent~ nDifToWell, trigger1~ nDifSepNWellTrig2, trigger2~ nDifSepNWellTrig1]],

NEW [Rule ← [message~ "n-Diffusion in n-Well", extent~ ndifInnWell, trigger1~ nDifInWellDifTrig1, trigger2~ alwaysErrorTrig2]],

NEW [Rule ← [message~ "n-Diffusion and p-substrate-contact", extent~ ndifpSubstrCont, trigger1~ nDifAndPDifTrig1, trigger2~ alwaysErrorTrig2]],

detectOpaqueViolation

];

cMosHandle.rules [pdifSpinifex] ← LIST [

NEW [Rule ← [message~ "p-Diffusion spacing", extent~ pdifSpacing, okIfConnected~ TRUE, trigger1~ pDifSpaceTrig1A, trigger2~ pDifSpaceTrig2A]],

NEW [Rule ← [message~ "p-Diffusion/unconnected n-Well-contact spacing", extent~ pdifUncnWellSpacing, okIfConnected~ TRUE, trigger1~ pDifSpaceTrig1B, trigger2~ pDifSpaceTrig2B]],

NEW [Rule ← [message~ "p-Diffusion width", extent~ pdifWidth, trigger1~ pDifWidTrig, trigger2~ pDifWidTrig]],

NEW [Rule ← [message~ "p-Diffusion and n-Well-contact", extent~ pdifnWellCont, trigger1~ pDifAndNDifTrig1, trigger2~ alwaysErrorTrig2]],

detectOpaqueViolation

];

cMosHandle.rules [polSpinifex] ← LIST [

NEW [Rule ← [message~ "Poly spacing", extent~ polSpacing, okIfConnected~ TRUE, trigger1~ polSpaceTrig, trigger2~ polSpaceTrig]],

NEW [Rule ← [message~ "Poly width", extent~ polWidth, trigger1~ polWidTrig, trigger2~ polWidTrig]],

NEW [Rule ← [message~ "Poly/unconnected Diffusion spacing", extent~ polUncDifSpacing, okIfConnected~ TRUE, trigger1~ polDifSepTrig1, trigger2~ polDifSepTrig2]],

NEW [Rule ← [message~ "Diffusion/unconnected Poly spacing", extent~ polDiffUncPolySpacing, okIfConnected~ TRUE, trigger1~ polDifSepTrig2, trigger2~ polDifSepTrig1]],

NEW [Rule ← [message~ "Poly over Diffusion", extent~ polOverDiff, trigger1~ polOverDifTrig1, trigger2~ alwaysErrorTrig2]],

detectOpaqueViolation

];

cMosHandle.rules [metSpinifex] ← LIST [

NEW [Rule ← [message~ "Metal spacing", extent~ metSeparation, okIfConnected~ TRUE, trigger1~ metSpTrig, trigger2~ metSpTrig]],

NEW [Rule ← [message~ "Metal width", extent~ metWidth, trigger1~ metWTrig, trigger2~ metWTrig]],

NEW [Rule ← [message~ "Cut to Cut spacing", extent~ metCutCutSpacing, trigger1~ metCutCutTrig, trigger2~ metCutCutTrig]],

NEW [Rule ← [message~ "Via to Via spacing", extent~ metViaViaSpacing, trigger1~ metViaViaTrig, trigger2~ metViaViaTrig]],

NEW [Rule ← [message~ "Cut to Via spacing", extent~ metCutViaSpacing, trigger1~ metCutCutTrig, trigger2~ metCutViaTrig]],

detectOpaqueViolation

];

cMosHandle.rules [m2Spinifex] ← LIST[

NEW [Rule ← [message~ "Metal 2 spacing", extent~ met2Separation, okIfConnected~ TRUE, trigger1~ spaceRuleTrig, trigger2~ spaceRuleTrig]],

NEW [Rule ← [message~ "Metal 2 width", extent~ met2Width, trigger1~ widthRuleTrig, trigger2~ widthRuleTrig]],

detectOpaqueViolation

];

cMosHandle.rules [wellSpinifex] ← LIST[

NEW [Rule ← [message~ "Well spacing", extent~ wellSep, okIfConnected~ TRUE, trigger1~ spaceRuleTrig, trigger2~ spaceRuleTrig]],

NEW [Rule ← [message~ "Well width", extent~ wellWidth, trigger1~ widthRuleTrig, trigger2~ widthRuleTrig]],

detectOpaqueViolation

];

};

Transistors

MapMaterial: SXTechnology.PerDrawRectProc ~ {

[r: CD.Rect, l: CD.Layer, data: REF ANY] RETURNS [TransistorMaterial]

cir: REF SX.Circuit ~ NARROW [data, REF SX.Circuit];

SELECT l FROM

CMosB.ndif, CMosB.pdif => RETURN [diffusion];

CMosB.pol => RETURN [polysilicon];

CMosB.nwell => {

wellNode: REF SX.CircuitNode ← cir.AddRect [lev~ CMosB.nwell, dim~ r];

wellNode.properties ← PropertyLists.PutProp [wellNode.properties, wellNode, wellNode];

RETURN [nothing];

};

ENDCASE => RETURN [nothing];

}; -- MapMaterial

ConvTransistor: PUBLIC SX.ConversionProc =

New transistor conversion procedure for ChipNDale 2.1

PROCEDURE [inst: CD.Instance, pos: CD.Position, orient: CD.Orientation, cir: REF Circuit]

BEGIN

transistor: REF SX.NodeLinkage;

gateNode, sourceNode, drainNode, wellNode: REF SX.CircuitNode;

tClass: ATOM = inst.ob.class.objectType;

isNType: BOOL = (inst.ob.layer = CMosB.ndif);

isNWell: BOOL;

difSXLayer: SX.SpinifexLayerIndex;

difChannel, exclPol: REF SX.Constraint;

sep: CD.Number = CDSimpleRules.MinDist[CMosB.ndif, CMosB.pol];

extSep: CD.Number = difToPolExtSep;

rect, wellRect: CD.Rect;

polList, difList, chList, difListSouth: LIST OF CD.Rect ← NIL;

length, width, extL, extW: CD.Number;

gateA, gateP, sourceA, sourceP, drainA, drainP: INT; -- ignore perimeter leading into channel

errorRect: CD.Rect = CD.InterestRect [inst.ob];

Determine diffusion layer and channel constraint

IF isNType THEN

{difSXLayer ← ndifSpinifex; difChannel ← ndCnstr[ndCh]; exclPol ← polCnstr[pExnD]}

ELSE

{difSXLayer ← pdifSpinifex; difChannel ← pdCnstr[pdCh]; exclPol ← polCnstr[pExpD]};

Get the geometry. Streching information has already been procesed by ChipNDale.

wellRect ← CDBasics.empty;

IF ISTYPE [inst.ob.specificRef, CDAtomicObjects.AtomicObsPtr] THEN

FOR geom: CDAtomicObjects.DrawList ← NARROW [inst.ob.specificRef, CDAtomicObjects.AtomicObsPtr].rList, geom.rest WHILE geom # NIL DO

SELECT geom.first.lev FROM

CMosB.pol => polList ← CONS [geom.first.r, polList];

CMosB.ndif, CMosB.pdif => difList ← CONS [geom.first.r, difList];

CMosB.nwell, CMosB.pwell => {wellRect ← geom.first.r; isNWell ← (geom.first.lev = CMosB.nwell)};

ENDCASE => ERROR SX.IllegalConstruct [geom.first.r, "Unknown transistor geometry"];

ENDLOOP

ELSE ERROR SX.IllegalConstruct [errorRect, "Replace this old Chipmonk transistor"];

Process the geometry according to the transistor class. The ChipNDale transistors are fully supported for p substrate.

SELECT tClass FROM

$C2Trans, $C2WellTrans => -- straight transistors

BEGIN

difRect, polRect, chRect, difExtRectNorth, difExtRectSouth: CD.Rect;

difRect ← difList.first; polRect ← polList.first;

chRect ← [difRect.x1, polRect.y1, difRect.x2, polRect.y2];

difExtRectNorth ← difExtRectSouth ← difRect;

difExtRectNorth.y1 ← polRect.y2; difExtRectSouth. y2 ← polRect.y1;

length ← polRect.y2 - polRect.y1; width ← difRect.x2 - difRect.x1;

extL ← polRect.y1 - difRect.y1; extW ← difRect.x1 - polRect.x1;

gateA ← (width + 2*extW) * length; gateP ← (width + 2*extW + length) * 2;

sourceA ← drainA ← extL * width; sourceP ← drainP ← 2 * extL + width;

Process poly layer

gateNode ← SX.AddRect [cir: cir, lev: CMosB.pol, dim: polRect, inst: inst, pos: pos, orient: orient];

IF extL > sep THEN -- Add rectangles for poly exclusion

BEGIN

rect ← difExtRectNorth; rect.y1 ← rect.y1 + sep;

[] ← SX.AddBox [cir, polSpinifex, rect, inst, pos, orient, SXTechnology.WNEGrow [extSep], exclPol];

rect ← difExtRectSouth; rect.y2 ← rect.y2 - sep;

[] ← SX.AddBox [cir, polSpinifex, rect, inst, pos, orient, SXTechnology.ESWGrow [extSep], exclPol];

END;

Process channel lead-in

rect ← difExtRectNorth; rect.y2 ← rect.y1+sep;

[] ← SX.AddBox [cir: cir, spinifexLayer: polSpinifex, dim: rect, inst: inst, pos: pos, orient: orient, value: polCnstr[pChE]];

rect ← difExtRectSouth; rect.y1 ← rect.y2-sep;

[] ← SX.AddBox [cir: cir, spinifexLayer: polSpinifex, dim: rect, inst: inst, pos: pos, orient: orient, value: polCnstr[pChE]];

Fill channel gap. NOTE: The DRC of channels is affected by the change made to CMosSpinifexInitImpl on April 2, 1985.

[] ← SX.AddBox [cir: cir, spinifexLayer: difSXLayer,
dim: chRect, inst: inst, pos: pos, orient: orient,
interestBloat: [dx1: (CDSimpleRules.MinDist[CMosB.ndif, CMosB.ndif]/2), dy1: 0, dx2: (CDSimpleRules.MinDist[CMosB.ndif, CMosB.ndif]/2), dy2: 0],
value: difChannel];

Add rectangles for diff width spacing and connection

sourceNode ← SX.AddBox[cir: cir, spinifexLayer: difSXLayer,
dim: difExtRectNorth, inst: inst, pos: pos, orient: orient,
interestBloat: SXTechnology.WNEGrow[(CDSimpleRules.MinDist[CMosB.ndif, CMosB.ndif]/2)]];

drainNode ← SX.AddBox[cir: cir, spinifexLayer: difSXLayer,
dim: difExtRectSouth, inst: inst, pos: pos, orient: orient,
interestBloat: SXTechnology.ESWGrow[(CDSimpleRules.MinDist[CMosB.ndif, CMosB.ndif]/2)]];

Process well.

IF tClass = $C2WellTrans THEN

BEGIN

l: CD.Layer = IF isNWell THEN CMosB.nwell ELSE CMosB.pwell;

IF NOT CDBasics.NonEmpty[wellRect] THEN ERROR SX.IllegalConstruct [errorRect, "Well transistor must have a well"];

wellNode ← SX.AddRect [cir: cir, lev: l, dim: wellRect, inst: inst, pos: pos, orient: orient];

wellNode.properties ← PropertyLists.PutProp [propList: wellNode.properties, prop: wellNode, val: wellNode];

END;

END; -- case $CTrans

$C2LTrans, $C2LWellTrans => -- angle transistors

BEGIN

diffNE: CD.Position ← CDBasics.minposition;

diffSW, polSW: CD.Position ← CDBasics.highposition;

polHor, polVert: CD.Rect;

IF ((polList.first.y2-polList.first.y1) < (polList.rest.first.y2-polList.rest.first.y1)) THEN
{polHor ← polList.first; polVert ← polList.rest.first}

ELSE {polHor ← polList.rest.first; polVert ← polList.first};

FOR diff: LIST OF CD.Rect ← difList, diff.rest WHILE diff # NIL DO

IF (diff.first.x1 <= diffSW.x) AND (diff.first.y1 <= diffSW.y) THEN

diffSW ← [diff.first.x1, diff.first.y1];

IF (diff.first.x2 >= diffNE.x) AND (diff.first.y2 >= diffNE.y) THEN

diffNE ← [diff.first.x2, diff.first.y2];

ENDLOOP;

polSW ← [polHor.x1, polHor.y1];

extW ← diffSW.x - polSW.x;

extL ← polSW.y - diffSW.y;

length ← polHor.y2 - polHor.y1;

width ← ((polHor.x2 - polHor.x1) - extW) + ((polVert.y2 - polVert.y1) - extW) - (length*3/2);

gateA ← ((width+length/2) + 2*extW) * length;

gateP ← ((polHor.x2 - polHor.x1) + (polVert.y2 - polVert.y1)) * 2;

sourceA ← ((diffNE.x - diffSW.x) + (diffNE.y - diffSW.y - extL)) * extL;

sourceP ← 2 * extL + (diffNE.x - diffSW.x) + (diffNE.y - diffSW.y);

drainP ← diffNE.x + diffNE.y - diffSW.x - diffSW.y - 2 * (extL + length);

drainA ← drainP * extL;

Process poly layer

gateNode ← SX.AddRect [cir: cir, lev: CMosB.pol, dim: polHor, inst: inst, pos: pos, orient: orient];

[] ← SX.AddRect [cir: cir, lev: CMosB.pol, dim: polVert, inst: inst, pos: pos, orient: orient, value: gateNode];

IF extL > sep THEN -- Add rectangles for poly exclusion

BEGIN

d: CD.Number ← extL + length + sep;

rect ← [x1: diffSW.x, y1: diffSW.y+d, x2: diffNE.x-d, y2: diffSW.y+length+2*extL];

[] ← SX.AddBox [cir, polSpinifex, rect, inst, pos, orient, SXTechnology.WNGrow [extSep], exclPol]; -- North

rect ← [x1: diffNE.x-length-2*extL, y1: diffSW.y+d, x2: diffNE.x-d, y2: diffNE.y];

[] ← SX.AddBox [cir, polSpinifex, rect, inst, pos, orient, SXTechnology.WNGrow [extSep], exclPol]; -- West

d ← extL - sep;

rect ← [x1: diffSW.x, y1: diffSW.y, x2: diffNE.x, y2: diffSW.y+d];

[] ← SX.AddBox [cir, polSpinifex, rect, inst, pos, orient, SXTechnology.ESWGrow [extSep], exclPol]; -- South

rect ← [x1: diffNE.x-d, y1: diffSW.y, x2: diffNE.x, y2: diffNE.y];

[] ← SX.AddBox [cir, polSpinifex, rect, inst, pos, orient, SXTechnology.NESGrow [extSep], exclPol] -- East

END; -- poly excl

Process channel lead-in

BEGIN

d: CD.Number ← extL + length + sep;

rect ← [x1: diffSW.x, y1: diffSW.y+extL+length, x2: diffNE.x-extL-length, y2: diffSW.y+d];

[] ← SX.AddBox [cir: cir, spinifexLayer: polSpinifex, dim: rect, inst: inst, pos: pos, orient: orient, value: polCnstr[pChE]]; -- North

rect ← [x1: diffNE.x-d, y1: diffSW.y+extL+length, x2: diffNE.x-extL-length, y2: diffNE.y];

[] ← SX.AddBox [cir: cir, spinifexLayer: polSpinifex, dim: rect, inst: inst, pos: pos, orient: orient, value: polCnstr[pChE]]; -- West

d ← extL - sep;

rect ← [x1: diffSW.x, y1: diffSW.y+d, x2: diffNE.x-d, y2: diffSW.y+extL];

[] ← SX.AddBox [cir: cir, spinifexLayer: polSpinifex, dim: rect, inst: inst, pos: pos, orient: orient, value: polCnstr[pChE]]; -- South

rect ← [x1: diffNE.x-extL, y1: diffSW.y+d, x2: diffNE.x-d, y2: diffNE.y];

[] ← SX.AddBox [cir: cir, spinifexLayer: polSpinifex, dim: rect, inst: inst, pos: pos, orient: orient, value: polCnstr[pChE]] -- East

END; -- ch lead-in

Fill channel gap. NOTE: The DRC of channels is affected by the change made to CMosSpinifexInitImpl on April 2, 1985.

rect ← polHor; rect.x1 ← rect.x1 + extW;

[] ← SX.AddBox [cir: cir, spinifexLayer: difSXLayer,
dim: rect, inst: inst, pos: pos, orient: orient,
interestBloat: [dx1: (CDSimpleRules.MinDist[CMosB.ndif, CMosB.ndif]/2), dy1: 0, dx2: 0, dy2: 0],
value: difChannel];

rect ← polVert; rect.y2 ← rect.y2 - extW;

[] ← SX.AddBox [cir: cir, spinifexLayer: difSXLayer,
dim: rect, inst: inst, pos: pos, orient: orient,
interestBloat: [dx1: 0, dy1: 0, dx2: 0, dy2: (CDSimpleRules.MinDist[CMosB.ndif, CMosB.ndif]/2)],
value: difChannel];

Add rectangles for diff width spacing and connection

rect ← [x1: diffSW.x, y1: diffSW.y+extL+length, x2: diffNE.x-extL-length, y2: diffSW.y+2*extL+length];

sourceNode ← SX.AddBox [cir: cir, spinifexLayer: difSXLayer,
dim: rect, inst: inst, pos: pos, orient: orient,
interestBloat: SXTechnology.WNGrow[(CDSimpleRules.MinDist[CMosB.ndif, CMosB.ndif]/2)]];

IF difList.rest # NIL THEN -- supposed source is concave

BEGIN

rect ← [x1: diffNE.x-length-2*extL, y1: rect.y1, x2: rect.x2, y2: diffNE.y];

[] ← SX.AddBox [cir: cir, spinifexLayer: difSXLayer,
dim: rect, inst: inst, pos: pos, orient: orient,
interestBloat: SXTechnology.WNGrow[(CDSimpleRules.MinDist[CMosB.ndif, CMosB.ndif]/2)],
value: sourceNode]

END;

rect ← [x1: diffSW.x, y1: diffSW.y, x2: diffNE.x, y2: diffSW.x+extL];

drainNode ← SX.AddBox[cir: cir, spinifexLayer: difSXLayer,
dim: rect, inst: inst, pos: pos, orient: orient,
interestBloat: SXTechnology.ESWGrow[(CDSimpleRules.MinDist[CMosB.ndif, CMosB.ndif]/2)]];

rect ← [x1: diffNE.x-extL, y1: rect.y2, x2: diffNE.x, y2: diffNE.y];

[] ← SX.AddBox[cir: cir, spinifexLayer: difSXLayer,
dim: rect, inst: inst, pos: pos, orient: orient,
interestBloat: SXTechnology.NESGrow[(CDSimpleRules.MinDist[CMosB.ndif, CMosB.ndif]/2)],
value: drainNode];

Process well.

IF tClass = $C2LWellTrans THEN

BEGIN

l: CD.Layer = IF isNWell THEN CMosB.nwell ELSE CMosB.pwell;

IF NOT CDBasics.NonEmpty[wellRect] THEN ERROR SX.IllegalConstruct [errorRect, "Well transistor must have a well"];

wellNode ← SX.AddRect [cir: cir, lev: l, dim: wellRect, inst: inst, pos: pos, orient: orient];

wellNode.properties ← PropertyLists.PutProp [propList: wellNode.properties, prop: wellNode, val: wellNode];

END;

END; -- case $C2LTrans, $C2LWellTrans

$CLWellTrans => ERROR SX.IllegalConstruct [errorRect, "Antique transistor class $CLWellTrans is illegal"];

ENDCASE => ERROR SX.IllegalConstruct [errorRect, "Unknown or antique transistor class"];

transistor ← SX.CreateLinkage [cir, inst, length, width];

Adjust area and perimeter values

SX.AdjustNode [node: gateNode, layer: polSpinifex, area: gateA, perim: gateP, mode: absolute];

SX.AdjustNode [sourceNode, difSXLayer, sourceA, sourceP, absolute];

SX.AdjustNode [drainNode, difSXLayer, drainA, drainP, absolute];

SX.LinkageAttach [link: transistor, attachType: $Gate, node: gateNode];

SX.LinkageAttach [link: transistor, attachType: $Source, node: sourceNode];

SX.LinkageAttach [link: transistor, attachType: $Drain, node: drainNode]

END; -- ConvTransistor

RoseTransistor: PUBLIC SXOutput.LinkagePrintProc ~ {

[desWDir: ROPE, dfStream, cellStream: IO.STREAM, linkage: REF NodeLinkage, name: Rope.ROPE, PrintNode: NodePrintProc]

PrintAttachment: PROCEDURE [key: ATOM, portName: Rope.ROPE] ~ {

cellStream.Put [IO.rope[" (\""], IO.rope[portName], IO.rope["\" "]];

FOR attachments: LIST OF REF SX.AttachedNode ← linkage.nodes, attachments.rest WHILE attachments # NIL DO

IF attachments.first.attachmentType = key THEN {

PrintNode[cellStream, attachments.first.node];

cellStream.PutRope[")"];

RETURN

}

ENDLOOP;

cellStream.PutRope ["\"?\")"];

}; -- PrintAttachment

naming: SXOutputPrivate.Naming ← SXOutputPrivate.GetANaming [linkage.source];

cellStream.PutRope["(CI "];

SXOutputPrivate.PrintNaming[

cellStream,

naming,

Rope.Cat[" \"", SXOutputPrivate.NameTransType[

desWDir: desWDir,

obj: linkage.source.ob,

dfStream: dfStream,

type: SELECT linkage.source.ob.layer FROM

CMosB.ndif, CMosB.wndif => $n,

CMosB.pdif, CMosB.wpdif => $p,

ENDCASE => $funny,

mode: $E,

length: linkage.l,

width: linkage.w], "\""]

];

SXOutputPrivate.PrintRoseInstantiationTransformation[cellStream, linkage.source];

cellStream.PutRope [" (CIC"];

PrintAttachment [$Gate, "gate"];

PrintAttachment [$Source, "ch1"];

PrintAttachment [$Drain, "ch2"];

cellStream.PutRope ["))"]

}; -- RoseTransistor

ThymeTransistor: PUBLIC SXOutput.LinkagePrintProc ~ {

[desWDir: ROPE, dfStream, cellStream: IO.STREAM, linkage: REF NodeLinkage, name: Rope.ROPE, PrintNode: NodePrintProc]

PrintAttachment: PROCEDURE [key: ATOM] ~ {

FOR attachments: LIST OF REF SX.AttachedNode ← linkage.nodes, attachments.rest WHILE attachments # NIL DO

IF attachments.first.attachmentType = key THEN {

PrintNode[cellStream, attachments.first.node];

RETURN

}

ENDLOOP;

cellStream.Put [IO.char['?]];

}; -- PrintAttachment

defaultW: INTEGER = 4*lambda;

defaultL: INTEGER = 2*l;

propertyValue: REF;

cellStream.Put [IO.rope[name], IO.rope[": "]];

cellStream.PutRope [SELECT linkage.source.ob.layer FROM

CMosB.ndif, CMosB.wndif => "ETran[",

CMosB.pdif, CMosB.wpdif => "CTran[",

ENDCASE => "FunnyTran["

];

PrintAttachment [$Gate];

cellStream.Put [IO.char[',]];

PrintAttachment [$Source];

cellStream.Put [IO.char[',]];

PrintAttachment [$Drain];

cellStream.Put [IO.char['|]];

cellStream.PutF[" W←N*%g", IO.int[linkage.w/l]];

IF linkage.l # defaultL THEN cellStream.PutF[", L←%g", IO.int[linkage.l/l]];

The following is a quick hack to allow John Ousterhout to test Crystal. In a later stage, SX.AttachedNode shall receive an additional field for this info. At the moment it is not clear yet, how the user interface should be like.

propertyValue ← CDProperties.GetInstanceProp [from: linkage.source, prop: SXAtoms.crystalAttr];

WITH propertyValue SELECT FROM

crystalHack: Rope.ROPE => IO.Put [stream: cellStream, v1: IO.rope["; "], v2: IO.rope[crystalHack]];

ENDCASE => IF propertyValue # NIL THEN TerminalIO.WriteRope [" $Crystal property must be a rope./n"];

cellStream.PutRope ["];"]

}; -- ThymeTransistor

Contacts

wellConnection: ATOM ~ $SXCMosBWellConnection;

wellNode: ATOM ~ $SXCMosBNWellNode;

maxContSize: CD.Number ~ 5 * l;

splitContWidth: CD.Number ~ 2 * l;

splitContHeight: CD.Number ~ 6 * l;

ConvertPDifRect: PUBLIC SX.ConversionProc = BEGIN

[appl: CD.Instance, pos: CD.Position, orient: CD.Orientation, cir: REF SX.Circuit]

wellNode: REF SX.CircuitNode;

nWellBox: CD.Rect ← CDBasics.RectAt[pos~[0,0], size~inst.ob.size];

pDifBox: CD.Rect ← CDBasics.Extend[nWellBox, -CMosB.wellSurround];

IF ~CDBasics.NonEmpty[pDifBox] THEN

BEGIN

TerminalIO.WriteRope [" this cell contains a w-pDif object whose pDif rectangle is empty\n"];

ERROR

END;

[] ← cir.AddRect [lev~CMosB.pdif, dim~pDifBox, inst~inst, pos~ pos, orient~ orient];

wellNode ← cir.AddRect [lev~CMosB.nwell, dim~nWellBox, inst~inst, pos~ pos, orient~ orient];

wellNode.properties ← PropertyLists.PutProp [wellNode.properties, wellNode, wellNode];

END; -- ConvertPDifRect

ConvertContact: PUBLIC SX.ConversionProc = BEGIN

[appl: CD.Instance, pos: CD.Position, orient: CD.Orientation, cir: REF SX.Circuit]

Size: PROC [r: CD.Rect] RETURNS [s: CD.Position] ~ INLINE BEGIN

s.x ← (r.x2 - r.x1); s.y ← (r.y2 - r.y1)

END; -- Size

classKey: ATOM = inst.ob.class.objectType;

r: CD.Rect = CD.InterestRect [inst.ob];

node: REF SX.CircuitNode ← NIL;

size: CD.Position;

sizeExceeded: BOOL ← FALSE;

SELECT classKey FROM

$C2SimpleCon, $C2WellSimpleCon, $C2LargeSimpleCon, $C2LargeWellSimpleCon, $C2DifShortCon, $C2WellDifShortCon, $C2Via, $C2LargeVia =>

FOR geom: CDAtomicObjects.DrawList ← NARROW [inst.ob.specificRef, CDAtomicObjects.AtomicObsPtr].rList, geom.rest WHILE geom # NIL DO

SELECT geom.first.lev FROM

CMosB.ndif, CMosB.pdif => {

node ← SX.AddRect[cir: cir, lev: geom.first.lev, dim: geom.first.r, inst: inst, pos: pos, orient: orient, value: node];

[] ← SX.AddBox[cir: cir, spinifexLayer: polSpinifex, dim: geom.first.r, inst: inst, pos: pos, orient: orient, value: polCnstr[(IF geom.first.lev = CMosB.ndif THEN pExNdCon ELSE pExPdCon)]];

};

CMosB.nwell, CMosB.pwell => {

bridge: REF SX.CircuitNode ← IF (classKey=$C2WellDifShortCon) THEN node ELSE NIL;

wellNode: REF SX.CircuitNode ← SX.AddRect [cir: cir, lev: geom.first.lev, dim: geom.first.r, inst: inst, pos: pos, orient: orient, value: bridge];

wellNode.properties ← PropertyLists.PutProp [wellNode.properties, wellNode, wellNode];

};

CMosB.nwellCont, CMosB.pwellCont => {

node ← SX.AddRect[cir: cir, lev: geom.first.lev, dim: geom.first.r, inst: inst, pos: pos, orient: orient, value: node];

[] ← SX.AddBox[cir: cir, spinifexLayer: polSpinifex, dim: geom.first.r, inst: inst, pos: pos, orient: orient, value: polCnstr[(IF geom.first.lev = CMosB.nwellCont THEN pExNdCon ELSE pExPdCon)]];

};

CMosB.met, CMosB.met2, CMosB.pol =>

node ← SX.AddRect[cir: cir, lev: geom.first.lev, dim: geom.first.r, inst: inst, pos: pos, orient: orient, value: node];

CMosB.cut => { -- all but vias

[] ← SX.AddBox[cir: cir, spinifexLayer: metSpinifex, dim: geom.first.r, inst: inst, pos: pos, orient: orient, value: metCnstr[mCut]];

size ← Size [geom.first.r];

SELECT classKey FROM

$C2DifShortCon, $C2WellDifShortCon =>

sizeExceeded ← sizeExceeded OR ((MIN[size.x, size.y]#splitContWidth) OR (MAX[size.x, size.y]#splitContHeight));

ENDCASE => sizeExceeded ← sizeExceeded OR (size.x>maxContSize OR size.y>maxContSize)};

CMosB.cut2 => { -- vias

[] ← SX.AddBox[cir: cir, spinifexLayer: metSpinifex, dim: geom.first.r, inst: inst, pos: pos, orient: orient, value: metCnstr[mVia]];

size ← Size [geom.first.r];

sizeExceeded ← sizeExceeded OR (size.x>maxContSize OR size.y>maxContSize)};

ENDCASE => ERROR SX.IllegalConstruct [geom.first.r, "Unknown simple contact geometry"];

ENDLOOP

ENDCASE => SX.IllegalConstruct [r, "Unknown CMos-B contact type"];

IF sizeExceeded THEN SX.IllegalConstruct [r, "Maximum contact size exceeded"]

END; -- ConvertContact

PointRect: PROC [p: CD.Position] RETURNS [r: CD.Rect] = BEGIN

r ← CDBasics.Extend [CDBasics.ToRect[p, p], l]

END; -- PointRect

CopyWellConnections: PUBLIC SX.CombineNodePropertyProc ~ BEGIN

[circuit: REF Circuit, to, from: PropertyLists.PropList, fromNesting: LIST OF CD.Instance] RETURNS [PropertyLists.PropList]

fromConnections: Nodes
← NARROW [PropertyLists.GetProp [propList: from, prop: wellConnection]];

toConnections: Nodes
← NARROW [PropertyLists.GetProp [propList: to, prop: wellConnection]];

FOR fl: Nodes ← fromConnections, fl.rest WHILE fl # NIL DO

fromNode: REF SX.CircuitNode;

IF fromNesting = NIL THEN fromNode ← fl.first

ELSE -- Side effect !!! May add fl.first to subcircuits ports.

fromNode ← SX.FindRootNode [circuit: circuit,
subcircuitNode: fl.first,
qualifier: fromNesting,
insertIfNotInCircuit: TRUE].node;

FOR tl: Nodes ← toConnections, tl.rest WHILE tl # NIL DO

IF SX.LookupNode [l: fromNode] = SX.LookupNode [l: tl.first] THEN EXIT;

REPEAT FINISHED =>

toConnections ← CONS [fromNode, toConnections]

ENDLOOP

ENDLOOP;

IF toConnections # NIL THEN

to ← PropertyLists.PutProp [propList: to, prop: wellConnection, val: toConnections];

IF (PropertyLists.GetProp [propList: from, prop: wellNode] # NIL)
AND (PropertyLists.GetProp [propList: to, prop: wellNode] = NIL) THEN

to ← PropertyLists.PutProp [propList: to, prop: wellNode, val: wellNode];

RETURN [to]

END; -- CopyWellConnections

CheckWellConnections: PUBLIC SX.CellPostProcessProc = BEGIN

PROC [cell: REF SX.LogicalCell]

isRoot: BOOL ← (cell.rootOnInvocation = SXAccess.invocation);

hasNode, hasConnection, hasRoot: BOOL;

wellConnects: Nodes;

Process Subcells.

FOR scl: CD.InstanceList ← cell.circuit.subcircuits, scl.rest WHILE scl # NIL DO

subcir: REF SX.Circuit ~ SXTechnology.GetCircuitFromCDObject [cdOb: scl.first.ob];

FOR nl: Nodes ← subcir.nodes, nl.rest WHILE nl # NIL DO

hasNode ← (PropertyLists.GetProp
[propList: nl.first.properties, prop: wellNode] # NIL);

hasConnection ← (PropertyLists.GetProp
[propList: nl.first.properties, prop: wellConnection] # NIL);

IF hasNode AND ~ hasConnection THEN {

Potential floating well in subcircuit, is it merged to some node in this cell?

hasRoot ← (SX.FindRootNode [circuit: cell.circuit, subcircuitNode: nl.first, qualifier: LIST[scl.first]].rootQualifier # NIL);

IF hasRoot THEN {

The well node of the subcircuit is not merged into this circuit, so it may be floating => VIOLATION

eLoc: CD.Position = CDOrient.MapPoint [pointInCell: nl.first.loc.xy,
cellSize: scl.first.ob.size,
cellInstOrient: scl.first.orientation,
cellInstPos: scl.first.location];

SXAccessInternal.PutError [ob: cell.cellObj,
r: PointRect[eLoc],
message: "floating n-well in subcell"];

}

} -- if has unconnected node

ENDLOOP -- for all nodes

ENDLOOP; -- for all cells

Process the cell. In context of this cell floating n-well is only an error if this is a root cell for this particular invocation of Spinifex.

FOR nl: Nodes ← cell.circuit.nodes, nl.rest WHILE nl # NIL DO

hasNode ← (PropertyLists.GetProp[propList: nl.first.properties, prop: wellNode] # NIL);

IF hasNode THEN {

wellConnects ← NARROW [PropertyLists.GetProp [propList: nl.first.properties, prop: wellConnection]];

Clean up list of well connections to eliminate REFs to superceded nodes.

FOR wl: Nodes ← wellConnects, wl.rest WHILE wl # NIL DO

wl.first ← SX.LookupNode [l: wl.first];

FOR restOfWl: Nodes ← wl, restOfWl.rest WHILE restOfWl.rest # NIL DO

IF wl.first = SX.LookupNode [l: restOfWl.rest.first] THEN

restOfWl.rest ← restOfWl.rest.rest -- Drop this list element.

ENDLOOP

ENDLOOP; -- clean up

IF (wellConnects = NIL AND isRoot) THEN {

n-well unconnect in root cell => VIOLATION

eLoc: CD.Position = nl.first.loc.xy;

SXAccessInternal.PutError [ob: cell.cellObj,
r: PointRect[eLoc],
message: "floating n-well in root cell of analysis"];

}

ELSE IF wellConnects # NIL AND wellConnects.rest # NIL THEN {

n-well connect multiple times => VIOLATION

eLoc: CD.Position = nl.first.loc.xy;

SXAccessInternal.PutError [ob: cell.cellObj,
r: PointRect[eLoc],
message: "n-well connected to multiple nodes"];

FOR wc: Nodes ← wellConnects, wc.rest WHILE wc # NIL DO

eLoc: CD.Position = wc.first.loc.xy;

SXAccessInternal.PutError [ob: cell.cellObj,
r: PointRect[eLoc],
message: IO.PutFR ["node on %g connects to multiply connected n-Well",
IO.atom[SXAccess.sxTech.spinifexLayerNames[wc.first.loc.layer].layerId]]];

ENDLOOP;

}

} -- has nWell node

ENDLOOP -- for all nodes

END; -- CheckWellConnections

AttachNWellContact: PUBLIC SX.BoxMapProc = BEGIN

PROC [cir: REF Circuit, dim: CD.Rect, appl: CD.Instance, pos: CD.Position, orient: CD.Orientation, node: REF CircuitNode] RETURNS [cirNode: REF CircuitNode ← NIL]

wellCon: REF SX.CircuitNode ← SX.AddBox [cir: cir,
spinifexLayer: wellSpinifex,
dim: dim, inst: inst, pos: pos, orient: orient,
interestBloat: [l, l, l, l]];

IF node = NIL THEN ERROR;

wellCon.properties ← PropertyLists.PutProp [propList: wellCon.properties,
prop: wellConnection,
val: NARROW[LIST[node], Nodes]]

END; -- AttachNWellContact

Initialisation

Init: PROCEDURE ~ {

cMosHandle: REF SX.TechHandle;

ndifResolution: REF SX.ConstraintResolution;

pdifResolution: REF SX.ConstraintResolution;

polyResolution: REF SX.ConstraintResolution;

metalResolution: REF SX.ConstraintResolution;

Construction of the Layer Constraints.

Constraint: PUBLIC TYPE ~ RECORD [

name: ATOM,

index: ConstraintIndex, -- index into the constraint array

hasCorrespondingNode: BOOLEAN ← FALSE, -- used where connectivity affects the rule and there is a corresponding layer which has the node associated with this region.

correspondingNodeLayer: SpinifexLayerIndex ← SpinifexLayerIndex.FIRST -- way to attach node values to constraints by looking at other layers.

];

ndCnstr[ndCh] ← NEW [Constraint ← [$NDifChannel, ndCh, TRUE, polSpinifex]];

ndCnstr[ndBur] ← NEW [Constraint ← [$BuriedNDifPol, ndBur]];

ndCnstr[ndInWel] ← NEW [Constraint ← [$NDifInWellError, ndInWel]];

ndCnstr[ndWel] ← NEW [Constraint ← [$ExcludeNDifByWell, ndWel]];

ndCnstr[ndCnt] ← NEW [Constraint ← [$ContactNDif, ndCnt, TRUE, ndifSpinifex]];

ndCnstr[ndPWct] ← NEW [Constraint ← [$ExcludeNDifByPWellCont, ndPWct, TRUE, pdifSpinifex]];

ndCnstr[ndPdErr] ← NEW [Constraint ← [$NDifAndPDifError, ndPdErr]];

pdCnstr[pdCh] ← NEW [Constraint ← [$PDifChannel, pdCh, TRUE, pdifSpinifex]];

pdCnstr[pdNdErr] ← NEW [Constraint ← [$PDifAndNDifError, pdNdErr]];

pdCnstr[pdCnt] ← NEW [Constraint ← [$ContactPDif, pdCnt, TRUE, pdifSpinifex]];

pdCnstr[pdNWct] ← NEW [Constraint ← [$ExcludePDifByNWellCont, pdNWct, TRUE, ndifSpinifex]];

polCnstr[pExnD] ← NEW [Constraint ← [$PolExcludeByNDif, pExnD, TRUE, ndifSpinifex]];

polCnstr[pExpD] ← NEW [Constraint ← [$PolExcludeByPDif, pExpD, TRUE, pdifSpinifex]];

polCnstr[pExNdCon] ← NEW [Constraint ← [$PolExcludeByNDifContact, pExNdCon, TRUE, ndifSpinifex]];

polCnstr[pExPdCon] ← NEW [Constraint ← [$PolExcludeByPDifContact, pExPdCon, TRUE, pdifSpinifex]];

polCnstr[pChE] ← NEW [Constraint ← [$PolChannelEdge, pChE]];

polCnstr[pDxorP] ← NEW [Constraint ← [$PolXorDif, pDxorP]];

polCnstr[pDandP] ← NEW [Constraint ← [$polAndDif, pDandP, TRUE, polSpinifex]];

polCnstr[pDErr] ← NEW [Constraint ← [$PolDifError, pDErr]];

polCnstr[pBur] ← NEW [Constraint ← [$PolBuried, pBur]];

polCnstr[pDExcl] ← NEW [Constraint ← [$PolExcludeNDif, pDExcl]];

polCnstr[pBurErr] ← NEW [Constraint ← [$PolBuriedNDifError, pBurErr]];

metCnstr[mCut] ← NEW [Constraint ← [$MetCut, mCut, TRUE, metSpinifex]];

metCnstr[mVia] ← NEW [Constraint ← [$MetVia, mVia, TRUE, metSpinifex]];

metCnstr[mVC] ← NEW [Constraint ← [$MetViaAndCutError, mVC]];

metCnstr[mVC] ← NEW [Constraint ← [$MetViaAndCutError, mVC, TRUE, metSpinifex]];

{

nd: SX.ConstraintIndex ~ SX.nodeIndex;

sp: SX.ConstraintIndex ~ SX.spaceIndex;

ndifResTab: SXTechnology.ResolutionTable ~ [

Constraint priority: sp < ndBur < nd < ndCnt < ndCh < ndWel < ndInWel < ndPWct < ndPdErr.

[ sp, nd, ndCh, ndBur, ndInWel, ndWel, ndCnt, ndPWct, ndPdErr, ,,,,,,],

[ nd, nd, ndCh, nd, ndInWel, ndInWel, ndCnt, ndPdErr, ndPdErr, ,,,,,,],

[ ndCh, ndCh, ndCh, ndCh, ndInWel, ndInWel, ndCh, ndPdErr, ndPdErr, ,,,,,,],

[ ndBur, nd, ndCh, ndBur, ndInWel, ndWel, ndCnt, ndPWct, ndPdErr, ,,,,,,],

[ ndInWel, ndInWel, ndInWel, ndInWel, ndInWel, ndInWel, ndCnt, ndPdErr, ndPdErr, ,,,,,,],

[ ndWel, ndInWel, ndInWel, ndWel, ndInWel, ndWel, ndCnt, ndPWct, ndPdErr, ,,,,,,],

[ ndCnt, ndCnt, ndCh, ndCnt, ndCnt, ndCnt, ndCnt, ndPdErr, ndPdErr, ,,,,,,],

[ ndPWct, ndPdErr, ndPdErr, ndPWct, ndPdErr, ndPWct, ndPdErr, ndPWct, ndPdErr, ,,,,,,],

[ ndPdErr, ndPdErr, ndPdErr, ndPdErr, ndPdErr, ndPdErr, ndPdErr, ndPdErr, ndPdErr, ,,,,,,],

,,,,,,

];

pdifResTab: SXTechnology.ResolutionTable ~ [

Constraint priority: sp < nd < pdCnt < pdCh < pdNWct < pdNdErr

[ sp, nd, pdCh, pdNdErr, pdCnt, pdNWct, ,,,,,,,,,],

[ nd, nd, pdCh, pdNdErr, pdCnt, pdNdErr, ,,,,,,,,,],

[ pdCh, pdCh, pdCh, pdNdErr, pdCh, pdNdErr, ,,,,,,,,,],

[ pdNdErr, pdNdErr, pdNdErr, pdNdErr, pdNdErr, pdNdErr, ,,,,,,,,,],

[ pdCnt, pdCnt, pdCh, pdNdErr, pdCnt, pdNdErr, ,,,,,,,,,],

[ pdNWct, pdNdErr, pdNdErr, pdNdErr, pdNdErr, pdNWct, ,,,,,,,,,],

,,,,,,,,,

];

polyResTab: SXTechnology.ResolutionTable ~ [

Constraint priority: sp < pDxorP < pExnD < pExpD < pChE < pExNdCon < pExPdCon < pDExcl < pBur < nd < pBurErr < pDErr < pDandP

[ sp, nd, pExnD, pExpD, pExNdCon, pExPdCon, pChE, pDExcl, pBur, pBurErr, pDxorP, pDandP, pDErr, ,,],

[ nd, nd, pDErr, pDErr, pDErr, pDErr, pDErr, nd, nd, pDErr, nd, pDandP, pDErr, ,,],

[ pExnD, pDErr, pExnD, pExpD, pExNdCon, pExPdCon, pChE, pBurErr, pBur, pBurErr, pChE, pDandP, pDErr, ,,],

[ pExpD, pDErr, pExpD, pExpD, pExPdCon, pExPdCon, pChE, pBurErr, pBur, pBurErr, pChE, pDandP, pDErr, ,,],

[ pExNdCon, pDErr, pExNdCon, pExPdCon, pExNdCon, pExPdCon, pExNdCon, pBurErr, pBur, pBurErr, pChE, pDandP, pDErr, ,,],

[ pExPdCon, pDErr, pExPdCon, pExPdCon, pExPdCon, pExPdCon, pExPdCon, pBurErr, pBur, pBurErr, pChE, pDandP, pDErr, ,,],

[ pChE, pDErr, pChE, pChE, pExNdCon, pExPdCon, pChE, pBurErr, pBur, pBurErr, pChE, pDandP, pDErr, ,,],

[ pDExcl, nd, pBurErr, pBurErr, pBurErr, pBurErr, pBurErr, pDExcl, pBur, pBurErr, pDExcl, pDandP, pDErr, ,,],

[ pBur, nd, pBur, pBur, pBur, pBur, pBur, pBur, pBur, pBur, pBur, pDandP, pDErr, ,,],

[ pBurErr, pDErr, pBurErr, pBurErr, pBurErr, pBurErr, pBurErr, pBurErr, pBur, pBurErr, pBurErr, pDandP, pDErr, ,,],

[ pDxorP, nd, pChE, pChE, pChE, pChE, pChE, pDExcl, pBur, pBurErr, pDxorP, pDandP, pDErr, ,,],

[ pDandP, pDandP, pDandP, pDandP, pDandP, pDandP, pDandP, pDandP, pDandP, pDandP, pDandP, pDandP, pDandP, ,,],

[ pDErr, pDErr, pDErr, pDErr, pDErr, pDErr, pDErr, pDErr, pDErr, pDErr, pDErr, pDandP, pDErr, ,,],

];

metalResTab: SXTechnology.ResolutionTable ~ [

Constraint priority: sp < nd < mCut < mVia < mVC

[ sp, nd, mCut, mVia, mVC, ,,,,,,,,,,],

[ nd, nd, mCut, mVia, mVC, ,,,,,,,,,,],

[ mCut, mCut, mCut, mVC, mVC, ,,,,,,,,,,],

[ mVia, mVia, mVC, mVia, mVC, ,,,,,,,,,,],

[ mVC, mVC, mVC, mVC, mVC, ,,,,,,,,,,],

,,,,,,,,,,

];

ndifResolution ← SXTechnology.SetUpResolution [ndCnstr, ndifResTab];

pdifResolution ← SXTechnology.SetUpResolution [pdCnstr, pdifResTab];

polyResolution ← SXTechnology.SetUpResolution [polCnstr, polyResTab];

metalResolution ← SXTechnology.SetUpResolution [metCnstr, metalResTab];

};

Basic cMosHandle & cdLayerMappings.

cMosHandle ← NEW [SX.TechHandle ← [
numSpinifexLayers~ 6,
layerInterestBloat~ [nDifLayerSep, (ndifSpacing/2), (polSpacing/2), (metSeparation/2), (met2Separation/2), (wellSep/2),,],
combineNodeProperties~ CopyWellConnections,
cellPostProcess~ CheckWellConnections]
];

cMosHandle ← NEW[SX.TechHandle ← [
numSpinifexLayers~ 6,
layerInterestBloat~ [nDifLayerSep, (ndifSpacing/2), (polSpacing/2), (metSeparation/2), (met2Separation/2), l,,],
combineNodeProperties~ CopyWellConnections,
cellPostProcess~ CheckWellConnections]
];

cMosHandle.illegalLayer[CMosB.nwellCont] ← FALSE;

cMosHandle.illegalLayer[CMosB.pwellCont] ← FALSE;

cMosHandle.illegalLayer[CMosB.ndif] ← FALSE;

cMosHandle.illegalLayer[CMosB.pdif] ← FALSE;

cMosHandle.illegalLayer[CMosB.nwell] ← FALSE;

cMosHandle.illegalLayer[CMosB.pol] ← FALSE;

cMosHandle.illegalLayer[CMosB.met] ← FALSE;

cMosHandle.illegalLayer[CMosB.met2] ← FALSE;

cMosHandle.cdLayerMapping[CMosB.nwellCont] ← LIST [[ndifSpinifex, (ndifSpacing/2)], [wellSpinifex, l, NEW [SX.BoxMapProc ← AttachNWellContact]], [pdifSpinifex, (pdifSpacing/2), pdCnstr[pdNWct]], [ndifSpinifex, (ndifSpacing/2), ndCnstr[ndCnt]], [polSpinifex, difToPolExtSep, polCnstr[pExnD]]];

Order Important for well plugging, node is created in first mapping, and used in second.

cMosHandle.cdLayerMapping[CMosB.pwellCont] ← LIST [[pdifSpinifex, (pdifSpacing/2)], [ndifSpinifex, (ndifSpacing/2), ndCnstr[ndPWct]], [pdifSpinifex, (pdifSpinifex/2), pdCnstr[pdCnt]], [polSpinifex, difToPolExtSep, polCnstr[pExpD]]];

cMosHandle.cdLayerMapping[CMosB.ndif] ← LIST [[ndifSpinifex, (ndifSpacing/2)], [polSpinifex, difToPolExtSep, polCnstr[pExnD]]];

cMosHandle.cdLayerMapping[CMosB.pdif] ← LIST [[pdifSpinifex, (pdifSpacing/2)], [polSpinifex, difToPolExtSep, polCnstr[pExpD]]];

cMosHandle.cdLayerMapping[CMosB.nwell] ← LIST [[ndifSpinifex, nDifToWell-(ndifSpacing/2), ndCnstr[ndWel]], [wellSpinifex, (wellSep/2)]];

cMosHandle.cdLayerMapping[CMosB.nwell] ← LIST [[ndifSpinifex, nDifToWell-(ndifSpacing/2), ndCnstr[ndWel]], [wellSpinifex, l]]; -- INTERIM

cMosHandle.cdLayerMapping[CMosB.pol] ← LIST [[polSpinifex, (polSpacing/2)]];

cMosHandle.cdLayerMapping[CMosB.met] ← LIST [[metSpinifex, (metSeparation/2)]];

cMosHandle.cdLayerMapping[CMosB.met2] ← LIST [[m2Spinifex, (met2Separation/2)]];

Translations for Opaque Cells.

BEGIN

conInfl: CD.Number ~ l; -- Influence distance of contacts.

Using value $Opaque ensures we get an error if these are ever used as normal cdLayerMappings.

cMosHandle.cdLayerMapping[CMosB.cut] ← LIST [[ndifSpinifex, conInfl, $Opaque], [pdifSpinifex, conInfl, $Opaque], [polSpinifex, conInfl, $Opaque], [metSpinifex, conInfl, $Opaque]];

cMosHandle.cdLayerMapping[CMosB.cut2] ← LIST [[metSpinifex, conInfl, $Opaque], [m2Spinifex, conInfl, $Opaque]];

cMosHandle.cdLayerMapping[CMosB.bur] ← LIST [[ndifSpinifex, (met2Separation/2), $Opaque], [polSpinifex, conInfl, $Opaque]];

END;

Spinifex Layer Identification.

cMosHandle.spinifexLayerNames[ndifSpinifex].layerId ← $nDiffusion;

cMosHandle.spinifexLayerNames[pdifSpinifex].layerId ← $pDiffusion;

cMosHandle.spinifexLayerNames[polSpinifex].layerId ← $Poly;

cMosHandle.spinifexLayerNames[metSpinifex].layerId ← $Metal;

cMosHandle.spinifexLayerNames[m2Spinifex].layerId ← $Metal2;

cMosHandle.spinifexLayerNames[wellSpinifex].layerId ← $NWell;

Thyme stray capacitance layer names.

cMosHandle.spinifexLayerNames[ndifSpinifex].thymeName ← "nD";

cMosHandle.spinifexLayerNames[pdifSpinifex].thymeName ← "pD";

cMosHandle.spinifexLayerNames[polSpinifex].thymeName ← "P";

cMosHandle.spinifexLayerNames[metSpinifex].thymeName ← "M";

cMosHandle.spinifexLayerNames[m2Spinifex].thymeName ← "M2";

Set Constraint Resolutions for each layer into the TechHandle.

cMosHandle.constraintResolutions[ndifSpinifex] ← ndifResolution;

cMosHandle.constraintResolutions[pdifSpinifex] ← pdifResolution;

cMosHandle.constraintResolutions[polSpinifex] ← polyResolution;

cMosHandle.constraintResolutions[metSpinifex] ← metalResolution;

The geometric rules.

InitRules [cMosHandle];

Technology handle is attached to the ChipNDale technology.

SXTechnology.RegisterTechnologyHandle[cdTech~ CMosB.cmosB, technologyHandle~ cMosHandle];

Technology specific objects.

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2Trans, conv~ ConvTransistor, thyme~ ThymeTransistor, rose~ RoseTransistor, fini~ SXOutputPrivate.UnNameTransType];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2WellTrans, conv~ ConvTransistor, thyme~ ThymeTransistor, rose~ RoseTransistor, fini~ SXOutputPrivate.UnNameTransType];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2LTrans, conv~ ConvTransistor, thyme~ ThymeTransistor, rose~ RoseTransistor, fini~ SXOutputPrivate.UnNameTransType];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2LWellTrans, conv~ ConvTransistor, thyme~ ThymeTransistor, rose~ RoseTransistor, fini~ SXOutputPrivate.UnNameTransType];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $CLWellTrans, conv~ ConvTransistor, thyme~ ThymeTransistor, rose~ RoseTransistor, fini~ SXOutputPrivate.UnNameTransType];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2PDifRect, conv~ ConvertPDifRect];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2NDifRect, conv~ ConvertPDifRect];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2SimpleCon, conv~ ConvertContact];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2WellSimpleCon, conv~ ConvertContact];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2LargeSimpleCon, conv~ ConvertContact];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2LargeWellSimpleCon, conv~ ConvertContact];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2DifShortCon, conv~ ConvertContact];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2WellDifShortCon, conv~ ConvertContact];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2Via, conv~ ConvertContact];

SXTechnology.RegisterSpinifexObjectProcs [cdTech~ CMosB.cmosB, objectType~ $C2LargeVia, conv~ ConvertContact];

};

Main

Init [];

TerminalIO.WriteRope ["cMos technology parameters Loaded\n"];

END.

gbb January 14, 1986 2:56:00 pm PST

Fixed some rules.

gbb February 10, 1986 1:17:39 pm PST

Fixed bug in the verification of cuts.

gbb March 11, 1986 1:33:49 pm PST

The contact class C2WellDifShortCon was only partially implemented

changes to: ConvertContact: added as a valid contact, Init: added registration

gbb March 15, 1986 1:03:26 pm PST

Tracked change in design rules

changes to: metCutViaSpacing: changed from 3l to 2l.

gbb March 17, 1986 6:50:46 pm PST

Made better use of CDSimpleRules.

changes to: ndifSpacing, ndifUncSubtrContSpacing, ndifInnWell, ndifpSubstrCont, pdifUncnWellSpacing, pdifnWellCont, polUncDifSpacing, polDiffUncPolySpacing, polOverDiff, metCutCutSpacing, metViaViaSpacing, metCutViaSpacing, difSep, nDifToWell.

gbb March 19, 1986 11:29:42 am PST

Improved rules for diffusion

changes to: ndifSpacing, ndifUncSubtrContSpacing, ndifpSubstrCont, pdifSpacing, pdifUncnWellSpacing, difSep, nDifToWell, pDifToWell, nDifTopDif, pdifUncSubtrContSpacing, nDifToSubtrCont, pDifToSubtrCont, ndifSpinifex, InitRules

gbb June 2, 1986 2:24:48 pm PDT

Bug fix in split contacts.

changes to: ConvertContact: the well of split contacts no longer is a separate node.

gbb June 10, 1986 6:41:58 pm PDT

Tracked change of atom for p angle transistors and added a case for old classes

changes to: ConvTransistor: fixed atoms and made new case for old classes, Init: registers with ChipNDale both the new and some old classes in oreder to provide clearer error messages.