nummload.c

ngspice又一个电子CAD仿真软件代码.功能更全

/**********
Copyright 1991 Regents of the University of California.  All rights reserved.
Author:	1987 Kartikeya Mayaram, U. C. Berkeley CAD Group
**********/

/*
 * This is the function called each iteration to evaluate the 2d numerical
 * MOSFETs in the circuit and load them into the matrix as appropriate
 */

#include "ngspice.h"
#include "devdefs.h"
#include "cktdefs.h"
#include "numosdef.h"
#include "trandefs.h"
#include "sperror.h"
#include "../../../ciderlib/twod/twoddefs.h"
#include "../../../ciderlib/twod/twodext.h"
#include "cidersupt.h"
#include "suffix.h"



/* External Declarations */
extern int TWOdcDebug;
extern int TWOtranDebug;
extern int TWOacDebug;

/* Forward Declarations */

int NUMOSinitSmSig(NUMOSinstance *inst);

int
NUMOSload(inModel, ckt)
  GENmodel *inModel;
  CKTcircuit *ckt;
{
  register NUMOSmodel *model = (NUMOSmodel *) inModel;
  register NUMOSinstance *inst;
  register TWOdevice *pDevice;
  double startTime, startTime2, totalTime, totalTime2;
  double tol;
  double xfact;
  double id, is, ig;
  double ideq, iseq, igeq;
  double idhat = 0.0, ishat = 0.0, ighat = 0.0;
  double delVdb, delVsb, delVgb;
  double vdb, vsb, vgb;
  struct mosConductances g;
  int icheck;
  int icheck1;
  int i;
  double deltaNorm[7];
  int devConverged = 0;
  int numDevNonCon;
  int deviceType;
  int doInitSolve;
  int doVoltPred;
  char *initStateName;

  /* loop through all the models */
  for (; model != NULL; model = model->NUMOSnextModel) {
    FieldDepMobility = model->NUMOSmodels->MODLfieldDepMobility;
    TransDepMobility = model->NUMOSmodels->MODLtransDepMobility;
    SurfaceMobility = model->NUMOSmodels->MODLsurfaceMobility;
    Srh = model->NUMOSmodels->MODLsrh;
    Auger = model->NUMOSmodels->MODLauger;
    AvalancheGen = model->NUMOSmodels->MODLavalancheGen;
    OneCarrier = model->NUMOSmethods->METHoneCarrier;
    MobDeriv = model->NUMOSmethods->METHmobDeriv;
    MaxIterations = model->NUMOSmethods->METHitLim;
    TWOdcDebug = model->NUMOSoutputs->OUTPdcDebug;
    TWOtranDebug = model->NUMOSoutputs->OUTPtranDebug;
    TWOacDebug = model->NUMOSoutputs->OUTPacDebug;
    deviceType = model->NUMOSoptions->OPTNdeviceType;
    doVoltPred = model->NUMOSmethods->METHvoltPred;

    if (ckt->CKTmode & MODEINITPRED) {
      /* compute normalized deltas and predictor coeff */
      if (!(ckt->CKTmode & MODEDCTRANCURVE)) {
	model->NUMOSpInfo->order = ckt->CKTorder;
	model->NUMOSpInfo->method = ckt->CKTintegrateMethod;
	for (i = 0; i <= ckt->CKTmaxOrder; i++) {
	  deltaNorm[i] = ckt->CKTdeltaOld[i] / TNorm;
	}
	computeIntegCoeff(ckt->CKTintegrateMethod, ckt->CKTorder,
	    model->NUMOSpInfo->intCoeff, deltaNorm);
	computePredCoeff(ckt->CKTintegrateMethod, ckt->CKTorder,
	    model->NUMOSpInfo->predCoeff, deltaNorm);
      }
    } else if (ckt->CKTmode & MODEINITTRAN) {
      model->NUMOSpInfo->order = ckt->CKTorder;
      model->NUMOSpInfo->method = ckt->CKTintegrateMethod;
      for (i = 0; i <= ckt->CKTmaxOrder; i++) {
	deltaNorm[i] = ckt->CKTdeltaOld[i] / TNorm;
      }
      computeIntegCoeff(ckt->CKTintegrateMethod, ckt->CKTorder,
	  model->NUMOSpInfo->intCoeff, deltaNorm);
    }
    /* loop through all the instances of the model */
    for (inst = model->NUMOSinstances; inst != NULL;
	inst = inst->NUMOSnextInstance) {
      if (inst->NUMOSowner != ARCHme) continue;

      pDevice = inst->NUMOSpDevice;

      totalTime = 0.0;
      startTime = SPfrontEnd->IFseconds();

      /* Get Temp.-Dep. Global Parameters */
      GLOBgetGlobals(&(inst->NUMOSglobals));

      /*
       * initialization
       */
      pDevice->devStates = ckt->CKTstates;
      icheck = 1;
      doInitSolve = FALSE;
      initStateName = NULL;
      if (ckt->CKTmode & MODEINITSMSIG) {
	vdb = *(ckt->CKTstate0 + inst->NUMOSvdb);
	vsb = *(ckt->CKTstate0 + inst->NUMOSvsb);
	vgb = *(ckt->CKTstate0 + inst->NUMOSvgb);
	delVdb = 0.0;
	delVsb = 0.0;
	delVgb = 0.0;
	NUMOSsetBCs(pDevice, vdb, vsb, vgb);
      } else if (ckt->CKTmode & MODEINITTRAN) {
	*(ckt->CKTstate0 + inst->NUMOSvdb) =
	    *(ckt->CKTstate1 + inst->NUMOSvdb);
	*(ckt->CKTstate0 + inst->NUMOSvsb) =
	    *(ckt->CKTstate1 + inst->NUMOSvsb);
	*(ckt->CKTstate0 + inst->NUMOSvgb) =
	    *(ckt->CKTstate1 + inst->NUMOSvgb);
	vdb = *(ckt->CKTstate1 + inst->NUMOSvdb);
	vsb = *(ckt->CKTstate1 + inst->NUMOSvsb);
	vgb = *(ckt->CKTstate1 + inst->NUMOSvgb);
	TWOsaveState(pDevice);
	delVdb = 0.0;
	delVsb = 0.0;
	delVgb = 0.0;
      } else if ((ckt->CKTmode & MODEINITJCT) &&
	  (ckt->CKTmode & MODETRANOP) && (ckt->CKTmode & MODEUIC)) {
	doInitSolve = TRUE;
	initStateName = inst->NUMOSicFile;
	vdb = 0.0;
	vsb = 0.0;
	vgb = 0.0;
	delVdb = vdb;
	delVsb = vsb;
	delVgb = vgb;
      } else if ((ckt->CKTmode & MODEINITJCT) && (inst->NUMOSoff == 0)) {
	doInitSolve = TRUE;
	initStateName = inst->NUMOSicFile;
	if (deviceType == OPTN_BIPOLAR) {
	  /* d,g,s,b => c,b,e,s */
	  vdb = 0.0;
	  vsb = -inst->NUMOStype * 1.0;
	  vgb = -inst->NUMOStype * (1.0 - 0.6);
	} else if (deviceType == OPTN_JFET) {
	  vdb = inst->NUMOStype * 0.5;
	  vsb = 0.0;
	  vgb = 0.0;
	} else {
	  vdb = inst->NUMOStype * 0.5;
	  vsb = 0.0;
	  vgb = inst->NUMOStype * 1.0;
	}
	delVdb = vdb;
	delVsb = vsb;
	delVgb = vgb;
      } else if (ckt->CKTmode & MODEINITJCT) {
	doInitSolve = TRUE;
	vdb = 0.0;
	vsb = 0.0;
	vgb = 0.0;
	delVdb = vdb;
	delVsb = vsb;
	delVgb = vgb;
      } else if ((ckt->CKTmode & MODEINITFIX) && inst->NUMOSoff) {
	vdb = 0.0;
	vsb = 0.0;
	vgb = 0.0;
	delVdb = vdb;
	delVsb = vsb;
	delVgb = vgb;
      } else {
	if (ckt->CKTmode & MODEINITPRED) {
	  *(ckt->CKTstate0 + inst->NUMOSvdb) =
	      *(ckt->CKTstate1 + inst->NUMOSvdb);
	  *(ckt->CKTstate0 + inst->NUMOSvsb) =
	      *(ckt->CKTstate1 + inst->NUMOSvsb);
	  *(ckt->CKTstate0 + inst->NUMOSvgb) =
	      *(ckt->CKTstate1 + inst->NUMOSvgb);
	  *(ckt->CKTstate0 + inst->NUMOSid) =
	      *(ckt->CKTstate1 + inst->NUMOSid);
	  *(ckt->CKTstate0 + inst->NUMOSis) =
	      *(ckt->CKTstate1 + inst->NUMOSis);
	  *(ckt->CKTstate0 + inst->NUMOSig) =
	      *(ckt->CKTstate1 + inst->NUMOSig);
	  *(ckt->CKTstate0 + inst->NUMOSdIdDVdb) =
	      *(ckt->CKTstate1 + inst->NUMOSdIdDVdb);
	  *(ckt->CKTstate0 + inst->NUMOSdIdDVsb) =
	      *(ckt->CKTstate1 + inst->NUMOSdIdDVsb);
	  *(ckt->CKTstate0 + inst->NUMOSdIdDVgb) =
	      *(ckt->CKTstate1 + inst->NUMOSdIdDVgb);
	  *(ckt->CKTstate0 + inst->NUMOSdIsDVdb) =
	      *(ckt->CKTstate1 + inst->NUMOSdIsDVdb);
	  *(ckt->CKTstate0 + inst->NUMOSdIsDVsb) =
	      *(ckt->CKTstate1 + inst->NUMOSdIsDVsb);
	  *(ckt->CKTstate0 + inst->NUMOSdIsDVgb) =
	      *(ckt->CKTstate1 + inst->NUMOSdIsDVgb);
	  *(ckt->CKTstate0 + inst->NUMOSdIgDVdb) =
	      *(ckt->CKTstate1 + inst->NUMOSdIgDVdb);
	  *(ckt->CKTstate0 + inst->NUMOSdIgDVsb) =
	      *(ckt->CKTstate1 + inst->NUMOSdIgDVsb);
	  *(ckt->CKTstate0 + inst->NUMOSdIgDVgb) =
	      *(ckt->CKTstate1 + inst->NUMOSdIgDVgb);
	  if (!(ckt->CKTmode & MODEDCTRANCURVE)) {
	    /* no linear prediction on device voltages */
	    vdb = *(ckt->CKTstate1 + inst->NUMOSvdb);
	    vsb = *(ckt->CKTstate1 + inst->NUMOSvsb);
	    vgb = *(ckt->CKTstate1 + inst->NUMOSvgb);
	    TWOpredict(pDevice, model->NUMOSpInfo);
	  } else {
            if (doVoltPred) {
	      /* linear prediction */
	      xfact=ckt->CKTdelta/ckt->CKTdeltaOld[1];
	      vdb = (1+xfact) * (*(ckt->CKTstate1 + inst->NUMOSvdb))
		  -   (xfact) * (*(ckt->CKTstate2 + inst->NUMOSvdb));
	      vsb = (1+xfact) * (*(ckt->CKTstate1 + inst->NUMOSvsb))
		  -   (xfact) * (*(ckt->CKTstate2 + inst->NUMOSvsb));
	      vgb = (1+xfact) * (*(ckt->CKTstate1 + inst->NUMOSvgb))
		  -   (xfact) * (*(ckt->CKTstate2 + inst->NUMOSvgb));
	    } else {
	      vdb = *(ckt->CKTstate1 + inst->NUMOSvdb);
	      vsb = *(ckt->CKTstate1 + inst->NUMOSvsb);
	      vgb = *(ckt->CKTstate1 + inst->NUMOSvgb);
	    }
	  }
	} else {
	  /*
	   * compute new nonlinear branch voltages
	   */
	  vdb = *(ckt->CKTrhsOld + inst->NUMOSdrainNode)
	      - *(ckt->CKTrhsOld + inst->NUMOSbulkNode);
	  vsb = *(ckt->CKTrhsOld + inst->NUMOSsourceNode)
	      - *(ckt->CKTrhsOld + inst->NUMOSbulkNode);
	  vgb = *(ckt->CKTrhsOld + inst->NUMOSgateNode)
	      - *(ckt->CKTrhsOld + inst->NUMOSbulkNode);
	}
	delVdb = vdb - *(ckt->CKTstate0 + inst->NUMOSvdb);
	delVsb = vsb - *(ckt->CKTstate0 + inst->NUMOSvsb);
	delVgb = vgb - *(ckt->CKTstate0 + inst->NUMOSvgb);
	idhat = *(ckt->CKTstate0 + inst->NUMOSid)
	    + *(ckt->CKTstate0 + inst->NUMOSdIdDVdb) * delVdb
	    + *(ckt->CKTstate0 + inst->NUMOSdIdDVsb) * delVsb
	    + *(ckt->CKTstate0 + inst->NUMOSdIdDVgb) * delVgb;
	ishat = *(ckt->CKTstate0 + inst->NUMOSis)
	    + *(ckt->CKTstate0 + inst->NUMOSdIsDVdb) * delVdb
	    + *(ckt->CKTstate0 + inst->NUMOSdIsDVsb) * delVsb
	    + *(ckt->CKTstate0 + inst->NUMOSdIsDVgb) * delVgb;
	ighat = *(ckt->CKTstate0 + inst->NUMOSig)
	    + *(ckt->CKTstate0 + inst->NUMOSdIgDVdb) * delVdb
	    + *(ckt->CKTstate0 + inst->NUMOSdIgDVsb) * delVsb
	    + *(ckt->CKTstate0 + inst->NUMOSdIgDVgb) * delVgb;


#ifndef NOBYPASS
	/*
	 * bypass if solution has not changed
	 */
	/*
	 * the following collections of if's would be just one if the average
	 * compiler could handle it, but many find the expression too
	 * complicated, thus the split.
	 */
	if ((ckt->CKTbypass) && pDevice->converged &&
	    (!(ckt->CKTmode & MODEINITPRED)) &&
	    (fabs(delVdb) < (ckt->CKTreltol * MAX(fabs(vdb),
			fabs(*(ckt->CKTstate0 + inst->NUMOSvdb))) +
		    ckt->CKTvoltTol)))
	  if ((fabs(delVsb) < ckt->CKTreltol * MAX(fabs(vsb),
		      fabs(*(ckt->CKTstate0 + inst->NUMOSvsb))) +
		  ckt->CKTvoltTol))
	    if ((fabs(delVgb) < ckt->CKTreltol * MAX(fabs(vgb),
			fabs(*(ckt->CKTstate0 + inst->NUMOSvgb))) +
		    ckt->CKTvoltTol))
	      if ((fabs(idhat - *(ckt->CKTstate0 + inst->NUMOSid)) <
		      ckt->CKTreltol * MAX(fabs(idhat),
			  fabs(*(ckt->CKTstate0 + inst->NUMOSid))) +
		      ckt->CKTabstol))
		if ((fabs(ishat - *(ckt->CKTstate0 + inst->NUMOSis)) <
			ckt->CKTreltol * MAX(fabs(ishat),
			    fabs(*(ckt->CKTstate0 + inst->NUMOSis))) +
			ckt->CKTabstol))
		  if ((fabs(ighat - *(ckt->CKTstate0 + inst->NUMOSig)) <
			  ckt->CKTreltol * MAX(fabs(ighat),
			      fabs(*(ckt->CKTstate0 + inst->NUMOSig))) +
			  ckt->CKTabstol)) {
		    /*
		     * bypassing....
		     */
		    vdb = *(ckt->CKTstate0 + inst->NUMOSvdb);
		    vsb = *(ckt->CKTstate0 + inst->NUMOSvsb);
		    vgb = *(ckt->CKTstate0 + inst->NUMOSvgb);
		    id = *(ckt->CKTstate0 + inst->NUMOSid);
		    is = *(ckt->CKTstate0 + inst->NUMOSis);
		    ig = *(ckt->CKTstate0 + inst->NUMOSig);
		    g.dIdDVdb = *(ckt->CKTstate0 + inst->NUMOSdIdDVdb);
		    g.dIdDVsb = *(ckt->CKTstate0 + inst->NUMOSdIdDVsb);
		    g.dIdDVgb = *(ckt->CKTstate0 + inst->NUMOSdIdDVgb);
		    g.dIsDVdb = *(ckt->CKTstate0 + inst->NUMOSdIsDVdb);
		    g.dIsDVsb = *(ckt->CKTstate0 + inst->NUMOSdIsDVsb);
		    g.dIsDVgb = *(ckt->CKTstate0 + inst->NUMOSdIsDVgb);
		    g.dIgDVdb = *(ckt->CKTstate0 + inst->NUMOSdIgDVdb);
		    g.dIgDVsb = *(ckt->CKTstate0 + inst->NUMOSdIgDVsb);
		    g.dIgDVgb = *(ckt->CKTstate0 + inst->NUMOSdIgDVgb);
		    goto load;
		  }