diff --git a/alliance/src/nero/configure.in b/alliance/src/nero/configure.in
index 82c64d3a..7097f848 100644
--- a/alliance/src/nero/configure.in
+++ b/alliance/src/nero/configure.in
@@ -2,7 +2,7 @@ dnl Process this file with autoconf to produce a configure script.
 AC_INIT(src/nero.cpp)
 
 NERO_MAJOR_VERSION=1
-NERO_MINOR_VERSION=0
+NERO_MINOR_VERSION=1
 NERO_VERSION=$NERO_MAJOR_VERSION.$NERO_MINOR_VERSION
 
 AC_SUBST(NERO_MAJOR_VERSION)
@@ -21,6 +21,7 @@ AC_PROG_CXX
 AC_PROG_CC
 AM_PROG_LIBTOOL
 AC_PROG_MAKE_SET
+AM_WITH_REGEX
 ALC_CXX_PROBLEMATIC_OLD_VERSION
 
 AC_CHECK_LIB(m, pow)
diff --git a/alliance/src/nero/src/ASimple.cpp b/alliance/src/nero/src/ASimple.cpp
index b470d3f2..70a84019 100644
--- a/alliance/src/nero/src/ASimple.cpp
+++ b/alliance/src/nero/src/ASimple.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: ASimple.cpp,v 1.3 2004/12/14 19:02:07 jpc Exp $
+// $Id: ASimple.cpp,v 1.4 2005/10/10 15:34:05 jpc Exp $
 //
 //  /----------------------------------------------------------------\ 
 //  |                                                                |
@@ -38,8 +38,11 @@ void CASimple::CQueue::load (MNet *nets, bool rglobal, bool global)
   MNet::iterator  itNet, endNet;
 
 
-  endNet = nets->end();
+  endNet     = nets->end();
   for (itNet = nets->begin(); itNet != endNet; itNet++) {
+    // Already routed signal.
+    if ( itNet->second->fixed ) continue;
+
     // Global routing stage.
     if ( global && (itNet->second->global(rglobal)) )
       push (itNet->second);
@@ -56,11 +59,12 @@ void CASimple::CQueue::load (MNet *nets, bool rglobal, bool global)
 // -------------------------------------------------------------------
 // Constructor  :  "CASimple::CASimple()".
 
-CASimple::CASimple (MNet *mNets, CDRGrid *drgrid) : _astar(drgrid, this)
+CASimple::CASimple (MNet *mNets, CDRGrid *drgrid)
+  : _astar(drgrid, this)
+  , nets(mNets)
+  , iterations_route(0)
+  , iterations_reroute(0)
 {
-  nets               = mNets;
-  iterations_route   = 0;
-  iterations_reroute = 0;
 }
 
 
diff --git a/alliance/src/nero/src/MDRGrid.cpp b/alliance/src/nero/src/MDRGrid.cpp
index 5abaa7bb..5622cd63 100644
--- a/alliance/src/nero/src/MDRGrid.cpp
+++ b/alliance/src/nero/src/MDRGrid.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: MDRGrid.cpp,v 1.5 2005/02/17 15:34:44 jpc Exp $
+// $Id: MDRGrid.cpp,v 1.6 2005/10/10 15:34:05 jpc Exp $
 //
 //  /----------------------------------------------------------------\ 
 //  |                                                                |
@@ -324,22 +324,20 @@ int  CDRGrid::iterator::manhattan (iterator &other)
 // -------------------------------------------------------------------
 // Constructor  :  "CDRGrid::CDRGrid()".
 
-  CDRGrid::CDRGrid (int x, int y, int z, int zup) throw (e_zupper)
+CDRGrid::CDRGrid (int xoff, int yoff, int x, int y, int z, int zup)
+  throw (e_zupper)
+  : xoffset(xoff)
+  , yoffset(yoff)
+  , X(x)
+  , Y(y)
+  , Z(z)
+  , XY(X*Y)
+  , XYZ(XY*Z)
+  , size(XY*(Z-1))
+  , zupper(zup)
 {
-  int    index;
-
-
-  X      = x;
-  Y      = y;
-  Z      = z;
-  XY     = X  * Y;
-  XYZ    = XY * Z;
-  size   = XY * (Z - 1);
-  zupper = zup;
-
   if (zupper < 4) throw e_zupper (zupper);
 
-
   nodes = new CMatrixNodes (this);
   pri   = new CMatrixPri   (this);
 
diff --git a/alliance/src/nero/src/MDefs.h b/alliance/src/nero/src/MDefs.h
index 13189da0..2b12d715 100644
--- a/alliance/src/nero/src/MDefs.h
+++ b/alliance/src/nero/src/MDefs.h
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: MDefs.h,v 1.7 2004/12/14 19:02:07 jpc Exp $
+// $Id: MDefs.h,v 1.8 2005/10/10 15:34:05 jpc Exp $
 //
 // /-----------------------------------------------------------------\ 
 // |                                                                 |
@@ -298,6 +298,8 @@
     // Matrix class ----------------------------------------------
 
     // Attributes.
+    public: int xoffset;
+    public: int yoffset;
     public: int X;
     public: int Y;
     public: int Z;
@@ -316,13 +318,13 @@
     public: CMatrixNodes *nodes;
 
     // Constructor.
-    public: CDRGrid  (int x, int y, int z, int zup) throw (e_zupper);
+    public: CDRGrid  (int xoff, int yoff, int x, int y, int z, int zup) throw (e_zupper);
 
     // Destructor.
     public: ~CDRGrid (void);
 
     // Modifiers.
-    public: void  costs (int x_hor, int x_ver, int y_hor, int y_ver, int z);
+    public: void  costs  (int x_hor, int x_ver, int y_hor, int y_ver, int z);
 
     // Utilities.
     public: int x  (int index) { return ( index       % X); }
@@ -673,6 +675,7 @@
     public: CBB            bb;
     public: int            size;
     public: bool           external;
+    public: bool           fixed;
     public: CDRGrid       *_drgrid;
 
     // Constructor.
diff --git a/alliance/src/nero/src/MMBK.cpp b/alliance/src/nero/src/MMBK.cpp
index 4dbad707..07e41a2e 100644
--- a/alliance/src/nero/src/MMBK.cpp
+++ b/alliance/src/nero/src/MMBK.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: MMBK.cpp,v 1.5 2005/04/07 14:56:18 jpc Exp $
+// $Id: MMBK.cpp,v 1.6 2005/10/10 15:34:05 jpc Exp $
 //
 // /-----------------------------------------------------------------\ 
 // |                                                                 |
@@ -48,11 +48,8 @@ namespace MBK {
 // -------------------------------------------------------------------
 // Constructor  :  "CXRect::CXRect()".
 
-CXRect::CXRect (long xab1, long yab1)
-{
-  XAB1 = xab1;
-  YAB1 = yab1;
-}
+CXRect::CXRect ( CDRGrid* agrid ) : drgrid(agrid)
+{ }
 
 
 
@@ -125,14 +122,37 @@ void  CXRect::seg2rect (void)
 
 void  CXRect::rect2grid (void)
 {
-  grid.x1 = (rect.x1 - XAB1) / env.grid_dx;
-  grid.y1 = (rect.y1 - YAB1) / env.grid_dy;
+  grid.x1 = (rect.x1 - drgrid->xoffset) / env.grid_dx;
+  grid.y1 = (rect.y1 - drgrid->yoffset) / env.grid_dy;
 
-  grid.x2 = (rect.x2 - XAB1) / env.grid_dx;
-  grid.y2 = (rect.y2 - YAB1) / env.grid_dy;
+  grid.x2 = (rect.x2 - drgrid->xoffset) / env.grid_dx;
+  grid.y2 = (rect.y2 - drgrid->yoffset) / env.grid_dy;
 
-  if (((rect.x2 - XAB1) % env.grid_dx) != 0) grid.x2 += 1;
-  if (((rect.y2 - XAB1) % env.grid_dy) != 0) grid.y2 += 1;
+  if (((rect.x2 - drgrid->xoffset) % env.grid_dx) != 0) grid.x2 += 1;
+  if (((rect.y2 - drgrid->yoffset) % env.grid_dy) != 0) grid.y2 += 1;
+
+  if (    (grid.x2 < 0) || (grid.x1 >= drgrid->X)
+       || (grid.y2 < 0) || (grid.y1 >= drgrid->Y) ) {
+    grid.x1 = -1;
+  } else {
+    if (grid.x1 < 0          ) grid.x1 = 0;
+    if (grid.y1 < 0          ) grid.y1 = 0;
+    if (grid.x2 > drgrid->X-1) grid.x2 = drgrid->X - 1;
+    if (grid.y2 > drgrid->Y-1) grid.y2 = drgrid->Y - 1;
+  }
+}
+
+
+
+
+// -------------------------------------------------------------------
+// Method  :  "CXRect::isInGrid()".
+
+bool  CXRect::isInGrid ()
+{
+  if (grid.x1 < 0) return false;
+
+  return true;
 }
 
 
@@ -230,6 +250,8 @@ CEnv::CEnv (void)
   ALU2Z[TALU5] = 4;
   ALU2Z[TALU6] = 5;
   ALU2Z[TALU7] = 6;
+
+  regcomp(&pxLibRegex,"p.*px",REG_EXTENDED|REG_NOSUB);
 }
 
 
@@ -538,15 +560,15 @@ void CPhfig::rflatten (char concat, char catal)
 // -------------------------------------------------------------------
 // Method :  "CPhfig::onslice()".
 
-bool CPhfig::onslice (long Y)
+bool CPhfig::onslice (long Y, long yoff)
 {
   if (Y < fig->YAB1) return (false);
   if (Y > fig->YAB2) return (false);
 
-  if (!(((Y - D::WIDTH_VDD / 2) - fig->YAB1) % D::Y_SLICE)) return (true);
-  if (!(((Y + D::WIDTH_VDD / 2) - fig->YAB1) % D::Y_SLICE)) return (true);
-  if (!(((Y - D::WIDTH_VSS / 2) - fig->YAB1) % D::Y_SLICE)) return (true);
-  if (!(((Y + D::WIDTH_VSS / 2) - fig->YAB1) % D::Y_SLICE)) return (true);
+  if (!(((Y - D::WIDTH_VDD / 2) - yoff ) % D::Y_SLICE)) return (true);
+  if (!(((Y + D::WIDTH_VDD / 2) - yoff ) % D::Y_SLICE)) return (true);
+  if (!(((Y - D::WIDTH_VSS / 2) - yoff ) % D::Y_SLICE)) return (true);
+  if (!(((Y + D::WIDTH_VSS / 2) - yoff ) % D::Y_SLICE)) return (true);
 
   return (false);
 }
@@ -770,19 +792,21 @@ CFig::~CFig (void)
 // -------------------------------------------------------------------
 // Method :  "CFig::addphseg()".
 
-void  CFig::addphseg (phseg_list &seg, bool isTerm )
+void  CFig::addphseg (phseg_list &seg, bool isTerm, bool isChip )
 {
-  MBK::addphseg ( phfig.fig
-                , seg.LAYER
-                , seg.WIDTH
-                , seg.X1
-                , seg.Y1
-                , seg.X2
-                , seg.Y2
-                , seg.NAME
-                );
+  if ( !isChip || !isobs(seg.LAYER) ) {
+    MBK::addphseg ( phfig.fig
+                  , seg.LAYER
+                  , seg.WIDTH
+                  , seg.X1
+                  , seg.Y1
+                  , seg.X2
+                  , seg.Y2
+                  , seg.NAME
+                  );
+  }
 
-  if ( !isTerm ) {
+  if ( !isTerm && !isChip ) {
     MBK::addphseg ( phfig.fig
                   , layer2TALU(seg.LAYER)
                   , seg.WIDTH
@@ -1166,13 +1190,20 @@ long  cmpALU (char layer1, char layer2)
 char  topVIALayer (char type)
 {
   switch (type) {
-    case CONT_VIA:  return (ALU1); break;
-    case CONT_VIA2: return (ALU2); break;
-    case CONT_VIA3: return (ALU3); break;
-    case CONT_VIA4: return (ALU4); break;
-    case CONT_VIA5: return (ALU5); break;
-    case CONT_VIA6: return (ALU6); break;
-    case CONT_VIA7: return (ALU7); break;
+    case CONT_VIA:   return (ALU1); break;
+    case CONT_VIA2:  return (ALU2); break;
+    case CONT_VIA3:  return (ALU3); break;
+    case CONT_VIA4:  return (ALU4); break;
+    case CONT_VIA5:  return (ALU5); break;
+    case CONT_VIA6:  return (ALU6); break;
+    case CONT_VIA7:  return (ALU7); break;
+    case CONT_TURN1: return (ALU1); break;
+    case CONT_TURN2: return (ALU2); break;
+    case CONT_TURN3: return (ALU3); break;
+    case CONT_TURN4: return (ALU4); break;
+    case CONT_TURN5: return (ALU5); break;
+    case CONT_TURN6: return (ALU6); break;
+    case CONT_TURN7: return (ALU7); break;
   }
 
   return (ALU8);
@@ -1188,13 +1219,20 @@ char  topVIALayer (char type)
 char  bottomVIALayer (char type)
 {
   switch (type) {
-    case CONT_VIA:  return (ALU2); break;
-    case CONT_VIA2: return (ALU3); break;
-    case CONT_VIA3: return (ALU4); break;
-    case CONT_VIA4: return (ALU5); break;
-    case CONT_VIA5: return (ALU6); break;
-    case CONT_VIA6: return (ALU7); break;
-    case CONT_VIA7: return (ALU8); break;
+    case CONT_VIA:   return (ALU2); break;
+    case CONT_VIA2:  return (ALU3); break;
+    case CONT_VIA3:  return (ALU4); break;
+    case CONT_VIA4:  return (ALU5); break;
+    case CONT_VIA5:  return (ALU6); break;
+    case CONT_VIA6:  return (ALU7); break;
+    case CONT_VIA7:  return (ALU8); break;
+    case CONT_TURN1: return (ALU1); break;
+    case CONT_TURN2: return (ALU2); break;
+    case CONT_TURN3: return (ALU3); break;
+    case CONT_TURN4: return (ALU4); break;
+    case CONT_TURN5: return (ALU5); break;
+    case CONT_TURN6: return (ALU6); break;
+    case CONT_TURN7: return (ALU7); break;
   }
 
   return (ALU9);
@@ -1203,6 +1241,17 @@ char  bottomVIALayer (char type)
 
 
 
+// -------------------------------------------------------------------
+// Function  :  "isPxLib()".
+
+bool  IsPxLib ( phfig_list* model )
+{
+  return regexec(&env.pxLibRegex,model->NAME,0,NULL,0) == 0;
+}
+
+
+
+
 // -------------------------------------------------------------------
 // End of MBK namespace.
 
diff --git a/alliance/src/nero/src/MMBK.h b/alliance/src/nero/src/MMBK.h
index 275aef0f..aebdbffa 100644
--- a/alliance/src/nero/src/MMBK.h
+++ b/alliance/src/nero/src/MMBK.h
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: MMBK.h,v 1.3 2005/04/07 14:56:18 jpc Exp $
+// $Id: MMBK.h,v 1.4 2005/10/10 15:34:05 jpc Exp $
 //
 // /-----------------------------------------------------------------\ 
 // |                                                                 |
@@ -24,6 +24,8 @@
 #define  __UMBK__  1
 
 
+# include  <regex.h>
+
 
 // -------------------------------------------------------------------
 // MBK namespace.
@@ -106,14 +108,16 @@ namespace MBK {
   class CXRect {
 
     // Attributes.
-    public: long        XAB1;  // MBK coordinates origin;
-    public: long        YAB1;
-    public: phseg_list  seg;   // MBK segment.
-    public: CRect       rect;  // Rectangle (MBK coordinates).
-    public: CRect       grid;  // Rectangle (routing grid units).
+    public: CDRGrid*    drgrid; // Associated grid, to check limits.
+    public: phseg_list  seg;    // MBK segment.
+    public: CRect       rect;   // Rectangle (MBK coordinates).
+    public: CRect       grid;   // Rectangle (routing grid units).
 
       // Contructor.
-    public: CXRect (long xab1, long yab1);
+    public: CXRect (CDRGrid* agrid);
+
+    // Predicate.
+    public: bool isInGrid ();
 
     // Modifiers.
     public:  void  setSeg    (phseg_list &rSeg);
@@ -134,10 +138,11 @@ namespace MBK {
   struct CEnv {
 
     // Attributes.
-    long    grid_dx;
-    long    grid_dy;
-    MLayer  ALU2W;
-    MLayer  ALU2Z;
+    long     grid_dx;
+    long     grid_dy;
+    MLayer   ALU2W;
+    MLayer   ALU2Z;
+    regex_t  pxLibRegex;
 
     // Constructor.
     CEnv (void);
@@ -202,7 +207,7 @@ namespace MBK {
 
     // Modifiers.
     void rflatten (char concat=YES, char catal=YES);
-    bool onslice  (long Y);
+    bool onslice  (long Y, long xoff);
     void save     (void);
     void saveas   (string &name);
 
@@ -268,7 +273,7 @@ namespace MBK {
     losig_list *LOSIG (void) { return (lofig.fig->LOSIG); }
 
     // Modifiers.
-    void  addphseg (phseg_list &seg, bool isTerm=false );
+    void  addphseg (phseg_list &seg, bool isTerm=false, bool isChip=false );
     void  addphvia (phvia_list &VIA);
     void  addphcon (phcon_list &con);
 
@@ -276,6 +281,14 @@ namespace MBK {
 
 
 
+
+  // ---------------------------------------------------------------
+  // MBK level Utilities functions.
+
+  bool  IsPxLib ( phfig_list* model );
+
+
+
   // ---------------------------------------------------------------
   // Pre-defined objects.
 
@@ -329,6 +342,8 @@ namespace MBK {
   struct CPowers {
 
     // Attributes.
+    long    xoffset;
+    long    yoffset;
     char    type;
     char    layer;
     long    width;
@@ -337,7 +352,7 @@ namespace MBK {
     LPower  powerLines;
 
     // Constructor.
-    CPowers (CFig*, char, int, long) throw (except_done);
+    CPowers (CFig*, long xoff, long yoff, char, int, long) throw (except_done);
 
     // Methods.
     void  dump (CFig *fig);
diff --git a/alliance/src/nero/src/MNet.cpp b/alliance/src/nero/src/MNet.cpp
index 26dab765..ee05bdd8 100644
--- a/alliance/src/nero/src/MNet.cpp
+++ b/alliance/src/nero/src/MNet.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: MNet.cpp,v 1.8 2005/02/17 14:47:27 jpc Exp $
+// $Id: MNet.cpp,v 1.9 2005/10/10 15:34:05 jpc Exp $
 //
 //  /----------------------------------------------------------------\ 
 //  |                                                                |
@@ -391,13 +391,16 @@ ostream  &operator<< (ostream &o, CTerm &self)
 // Constructor  :  "CNet::CNet()".
 
 CNet::CNet (CDRGrid *drgrid, string netName)
+  : pri(0)
+  , name(netName)
+  , terms()
+  , rtree(NULL)
+  , bb()
+  , size(0)
+  , external(false)
+  , fixed(false)
+  , _drgrid(drgrid)
 {
-  name     = netName;
-  external = false;
-  pri      = 0;
-  size     = 0;
-  rtree    = NULL;
-  _drgrid  = drgrid;
 }
 
 
diff --git a/alliance/src/nero/src/MPower.cpp b/alliance/src/nero/src/MPower.cpp
index ed9d965e..370a24e8 100644
--- a/alliance/src/nero/src/MPower.cpp
+++ b/alliance/src/nero/src/MPower.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: MPower.cpp,v 1.3 2005/04/07 14:56:18 jpc Exp $
+// $Id: MPower.cpp,v 1.4 2005/10/10 15:34:05 jpc Exp $
 //
 // /-----------------------------------------------------------------\ 
 // |                                                                 |
@@ -70,10 +70,14 @@ ostream &operator<< (ostream &o, CPower &self)
 // Constructor  :  "CPowers::CPowers ()".
 
 CPowers::CPowers ( CFig *fig
+                 , long  xoff
+                 , long  yoff
                  , char  atype
                  , int   alayer
                  , long  awidth
                  ) throw (except_done)
+  : xoffset(xoff)
+  , yoffset(yoff)
 {
   LPower::iterator  itLine, beginLine, endLine;
   phins_list       *ins;
@@ -178,7 +182,7 @@ CPowers::CPowers ( CFig *fig
           }
 
           if (   (cmpALU (alayer, CALU1) & F_CALU)
-              && !fig->phfig.onslice (flatSeg.Y1)) {
+              && !fig->phfig.onslice (flatSeg.Y1,yoffset)) {
             cerr << hwarn ("");
             cerr << "  " << layer2a (layer) << " \"" << seg->NAME
                  <<"\" segment at ("
diff --git a/alliance/src/nero/src/RBox.cpp b/alliance/src/nero/src/RBox.cpp
index f0a40904..36cfede2 100644
--- a/alliance/src/nero/src/RBox.cpp
+++ b/alliance/src/nero/src/RBox.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: RBox.cpp,v 1.3 2002/11/04 14:43:08 jpc Exp $
+// $Id: RBox.cpp,v 1.4 2005/10/10 15:34:06 jpc Exp $
 //
 //  /----------------------------------------------------------------\ 
 //  |                                                                |
@@ -83,7 +83,7 @@ CRBox::CRBox (int rtype, bool debug)
   // Creating routing matrix.
   cdebug << "  Routing matrix size := (10, 15, 5)\n";
 
-  drgrid = new CDRGrid (X, Y, Z, 4);
+  drgrid = new CDRGrid (0, 0, X, Y, Z, 4);
 
 
   // Adding signal "sig_one".
diff --git a/alliance/src/nero/src/RDefs.h b/alliance/src/nero/src/RDefs.h
index 4d8fc333..e0a79cf1 100644
--- a/alliance/src/nero/src/RDefs.h
+++ b/alliance/src/nero/src/RDefs.h
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: RDefs.h,v 1.3 2002/11/04 14:43:08 jpc Exp $
+// $Id: RDefs.h,v 1.4 2005/10/10 15:34:06 jpc Exp $
 //
 // /-----------------------------------------------------------------\ 
 // |                                                                 |
@@ -41,10 +41,13 @@
     // Attributes.
     public: CASimple   *netsched;
     public: CDRGrid    *drgrid;
+    public: long        xoffsetgrid;
+    public: long        yoffsetgrid;
     public: MNet        nets;
     public: bool        loaded;
     public: bool        insave;
     public: bool        rglobal;
+    public: bool        ischip;
 
     // MBK dedicated Attributes.
     public: MBK::CFig    *fig;
@@ -62,7 +65,12 @@
     public: CNet *findnet (char *signame);
     public: CNet *getnet  (string &signame);
     public: CNet *getnet  (char *signame);
-    public: void  mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype);
+    public: void  mbkload (MBK::CFig *mbkfig
+                          , int z
+                          , int zup
+                          , int rtype
+                          , bool halfpitch
+                          , bool rotate );
     public: void  mbksave (string &name) throw (except_done);
     public: void  route   (void);
 
diff --git a/alliance/src/nero/src/RMBK.cpp b/alliance/src/nero/src/RMBK.cpp
index eb61ed63..839f3d04 100644
--- a/alliance/src/nero/src/RMBK.cpp
+++ b/alliance/src/nero/src/RMBK.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: RMBK.cpp,v 1.9 2005/04/08 10:15:45 jpc Exp $
+// $Id: RMBK.cpp,v 1.10 2005/10/10 15:34:06 jpc Exp $
 //
 //  /----------------------------------------------------------------\ 
 //  |                                                                |
@@ -33,12 +33,20 @@
 // -------------------------------------------------------------------
 // Modifier  :  "CRBox::mbkload()".
 
-void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
+void  CRBox::mbkload (MBK::CFig *mbkfig
+                     , int z
+                     , int zup
+                     , int rtype
+                     , bool halfpitch
+                     , bool rotate )
 {
     MBK::MIns::iterator   itIns, endInstances, endOrphans;
   MBK::MLosig::iterator   endSig;
-                   long   mX, mY, mZ, x, y, zz;
+                   long   mX, mY, mZ, x, y, zz, xadjust, yadjust, yoffsetslice;
+                   long   XRW1, YRW1, XRW2, YRW2;
                    bool   use_global;
+                   long   northPad, southPad, eastPad, westPad;
+                   long   xoffsettrack, yoffsettrack;
         MBK::chain_list  *pChain;
         MBK::locon_list  *pLocon;
         MBK::phcon_list  *pPhcon;
@@ -48,6 +56,7 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
         MBK::phfig_list  *pModel;
             MBK::CXRect  *rect;
               MBK::CIns  *pIns;
+                   MNet   routeds;
                    CNet  *pNet;
                  string   sig_name, term_name, ins_name;
       CDRGrid::iterator   coord;
@@ -57,15 +66,126 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
   cmess1 << "\n";
   cmess1 << "  o  Loading design into grid...\n";
 
-  fig = mbkfig;
+  ischip       = false;
+  fig          = mbkfig;
+  endInstances = fig->instances.end ();
+  endOrphans   = fig->orphans.end   ();
+  endSig       = fig->lofig.signals.end ();
 
+  northPad     = 0;
+  southPad     = 0;
+  westPad      = 0;
+  eastPad      = 0;
+  xoffsettrack = 0;
+  yoffsettrack = 0;
+
+  // Half pitch offset.
+  if ( halfpitch ) {
+    xoffsettrack = D::X_GRID / 2;
+    yoffsettrack = D::Y_GRID / 2;
+  }
+
+  // Search for pads.
+  for (itIns = fig->instances.begin(); itIns != endInstances; itIns++) {
+    pModel = itIns->second->getmodel ();
+
+    if ( MBK::IsPxLib(pModel) ) {
+      switch ( itIns->second->phins->TRANSF ) {
+        case NOSYM:
+          ischip = true;
+          if ( northPad == 0 ) {
+            cmess2 << "     o  North pad found.\n";
+            northPad = pModel->YAB2 - pModel->YAB1 - MBK::SCALE(15);
+          }
+          break;
+        case SYM_Y:
+          ischip = true;
+          if ( southPad == 0 ) {
+            cmess2 << "     o  South pad found.\n";
+            southPad = pModel->YAB2 - pModel->YAB1 - MBK::SCALE(15);
+          }
+          break;
+        case ROT_P:
+          ischip = true;
+          if ( eastPad == 0 ) {
+            cmess2 << "     o  East pad found.\n";
+            eastPad = pModel->XAB2 - pModel->XAB1 - MBK::SCALE(15);
+          }
+          break;
+        case SY_RP:
+          ischip = true;
+          if ( westPad == 0 ) {
+            cmess2 << "     o  West pad found.\n";
+            westPad = pModel->XAB2 - pModel->XAB1 - MBK::SCALE(15);
+          }
+          break;
+        default:
+          cerr << hwarn ("")
+               << "  Pad " << itIns->second->phins->INSNAME
+               << " have an invalid orientation.\n";
+          break;
+      }
+    }
+  }
+
+
+  //southPad = northPad = westPad = eastPad = MBK::SCALE(50);
+  //westPad = MBK::SCALE(100);
+
+
+  // Default Routing Widow size : the AB.
+  XRW1 = fig->XAB1 () + westPad;
+  YRW1 = fig->YAB1 () + southPad;
+  XRW2 = fig->XAB2 () - eastPad;
+  YRW2 = fig->YAB2 () - northPad;
+
+  // Find the a seed cell (one either from sxlib or dp_sxlib to
+  // track adjust the grid).
+  for (itIns = fig->instances.begin(); ; itIns++) {
+    if (itIns == endInstances) {
+      xadjust      = xoffsettrack;
+      yadjust      = yoffsettrack;
+      yoffsetslice = 0;
+      cout << hwarn ("")
+           << "  Unable to found a seed cell (i.e. belonging to either\n"
+           << "  sxlib or dp_sxlib) grid could be misplaced.\n";
+      break;
+    }
+
+    pModel = itIns->second->getmodel ();
+
+    if ( !MBK::IsPxLib(pModel) ) {
+      cmess2 << "     o  Using seed cell \"" << itIns->first
+             << "\" (model \"" << pModel->NAME << "\").\n";
+      xadjust      = abs((itIns->second->phins->XINS - XRW1) % D::X_GRID ) + xoffsettrack;
+      yadjust      = abs((itIns->second->phins->YINS - YRW1) % D::Y_GRID ) + yoffsettrack;
+      yoffsetslice = abs((itIns->second->phins->YINS - YRW1) % D::Y_SLICE) + YRW1;
+
+      break;
+    }
+  }
+  
+  xoffsetgrid = XRW1 + xadjust;
+  yoffsetgrid = YRW1 + yadjust;
+
+  cmess2 << "     o  Grid offset : ("
+         << MBK::UNSCALE(xoffsetgrid) << ","
+         << MBK::UNSCALE(yoffsetgrid) << ")"
+         << " [adjust ("
+         << MBK::UNSCALE(xadjust) << ","
+         << MBK::UNSCALE(yadjust) << ")]\n";
 
   // Compute the routing grid size.
-  mX = (fig->XAB2 () - fig->XAB1 ()) / D::X_GRID + 1;
-  mY = (fig->YAB2 () - fig->YAB1 ()) / D::Y_GRID + 1;
+  mX = (XRW2 - XRW1) / D::X_GRID + ((xadjust==0)?1:0);
+  mY = (YRW2 - YRW1) / D::Y_GRID + ((yadjust==0)?1:0);
   mZ = z;
 
 
+  // Is the design a complete chip.
+  if (ischip)
+    cmess2 << "     o  Design have pads, treated as a complete chip.\n";
+
+
   // Selecting the whether to use global routing.
   use_global = (mX + mY) > (2 * D::GLOBAL_HP);
   if (rtype == D::ROUTING_CHOOSE) {
@@ -105,10 +225,10 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
          << mX << "," << mY << "," << mZ << "].\n";
 
   // Allocating the routing grid.
-  drgrid = new CDRGrid (mX, mY, mZ, zup);
+  drgrid = new CDRGrid (xoffsetgrid, yoffsetgrid, mX, mY, mZ, zup);
 
 
-  rect = new MBK::CXRect (fig->XAB1(), fig->YAB1());
+  rect = new MBK::CXRect (drgrid);
 
 
   cmess2 << "     o  Loading external terminals.\n";
@@ -141,10 +261,19 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
 
     rect->setSeg  (flatSeg);
 
-    pNet->newaccess ( term_name
-                    , rect->grid
-                    , MBK::env.layer2z (pPhcon->LAYER)
-                    );
+    if ( rect->isInGrid() ) {
+      pNet->newaccess ( term_name
+                      , rect->grid
+                      , MBK::env.layer2z (pPhcon->LAYER)
+                      );
+    } else {
+      cerr << hwarn ("")
+           << "  The terminal \"" << pPhcon->NAME << "\" at ("
+           << MBK::UNSCALE (pPhcon->XCON) << ","
+           << MBK::UNSCALE (pPhcon->YCON) << ") layer "
+           << MBK::layer2a (pPhcon->LAYER) << "\n"
+           << "  is outside the routing grid : ignored.\n";
+    }
 
   }
 
@@ -152,11 +281,6 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
   cmess2 << "     o  Finding obstacles.\n";
 
 
-  endInstances = fig->instances.end ();
-  endOrphans   = fig->orphans.end   ();
-  endSig       = fig->lofig.signals.end ();
-
-
   // Browse father for obstacles (powers are obstacles) and already
   // routed or partially routed signals.
   for (pSeg = fig->phfig.fig->PHSEG; pSeg != NULL; pSeg = pSeg->NEXT) {
@@ -203,16 +327,33 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
     }
 
     pNet = getnet (pSeg->NAME);
+    if ( !pNet->fixed ) {
+      cmess2 << "     o  Signal " << pNet->name << " is assumed to be routed.\n";
+      pNet->fixed = true;
+    }
 
     rect->setSeg  (*pSeg);
 
-    pNet->newaccess ( pSeg->NAME
-                    , rect->grid
-                    , MBK::env.layer2z (pSeg->LAYER)
-                    );
+    if ( rect->isInGrid() ) {
+      //pNet->newaccess ( pSeg->NAME
+      //                , rect->grid
+      //                , MBK::env.layer2z (pSeg->LAYER)
+      //                );
+      drgrid->nodes->obstacle (rect->grid, MBK::env.layer2z (pSeg->LAYER));
+    } else {
+      cerr << hwarn ("")
+           << "  The segment \"" << pSeg->NAME << "\" at ("
+           << MBK::UNSCALE (pSeg->X1) << ","
+           << MBK::UNSCALE (pSeg->Y1) << ") ("
+           << MBK::UNSCALE (pSeg->X2) << ","
+           << MBK::UNSCALE (pSeg->Y2) << ") layer "
+           << MBK::layer2a (pSeg->LAYER) << "\n"
+           << "  is outside the routing grid : ignored.";
+    }
   }
 
 
+  cerr << "VIAs" << endl;
   // Browse for obstacle VIAs.
   for (pVIA = fig->phfig.fig->PHVIA; pVIA != NULL; pVIA = pVIA->NEXT) {
     // Only power VIAs must be obstacles.
@@ -236,6 +377,8 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
     flatSeg.Y2    = pVIA->YVIA;
     flatSeg.WIDTH = pVIA->DY;
 
+    cerr << pVIA->XVIA << " " << pVIA->YVIA << " " << (int)flatSeg.LAYER << endl;
+
     rect->setSeg (flatSeg);
 
     //cerr << "+ Top VIA obstacle (" << pVIA->XVIA << "," << pVIA->YVIA << ")" << endl;
@@ -243,6 +386,7 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
   }
 
 
+  cerr << "Instances" << endl;
   // Browse instances & orphans for obstacles.
   for (itIns = fig->instances.begin(); ; itIns++) {
     if (itIns == endInstances) itIns = fig->orphans.begin ();
@@ -269,7 +413,7 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
         drgrid->nodes->obstacle (rect->grid, MBK::env.layer2z (pSeg->LAYER));
 
         if ( !MBK::ISVDD (pSeg->NAME) && !MBK::ISVSS (pSeg->NAME) )
-          fig->addphseg ( flatSeg, true );
+          fig->addphseg ( flatSeg, true, ischip );
       }
     }
   }
@@ -326,10 +470,25 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
         pIns->flatseg (flatSeg, *pSeg);
         rect->setSeg  (flatSeg);
 
-        pNet->newaccess ( term_name
-                        , rect->grid
-                        , MBK::env.layer2z (pSeg->LAYER)
-                        );
+        if (rect->isInGrid()) {
+          if ( pNet->fixed ) {
+            drgrid->nodes->obstacle (rect->grid, MBK::env.layer2z (pSeg->LAYER));
+          } else {
+            pNet->newaccess ( term_name
+                            , rect->grid
+                            , MBK::env.layer2z (pSeg->LAYER)
+                            );
+          }
+        } else {
+          cerr << hwarn ("")
+               << "  The connector segment \"" << pSeg->NAME << "\" at ("
+               << MBK::UNSCALE (pSeg->X1) << ","
+               << MBK::UNSCALE (pSeg->Y1) << ") ("
+               << MBK::UNSCALE (pSeg->X2) << ","
+               << MBK::UNSCALE (pSeg->Y2) << ") layer "
+               << MBK::layer2a (pSeg->LAYER) << "\n"
+               << "  is outside of the grid : ignored.";
+        }
       }
     } // End of "pChain" (terminal) loop.
 
@@ -347,12 +506,16 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
 
 
   // Rebuild the power grid from the instances.
-  cmess2 << "     o  Reading power grid.\n";
-  powers[MBK::CALU1] = new MBK::CPowers ( fig
-                                        , C_HORIZONTAL
-                                        , MBK::ALU1
-                                        , D::WIDTH_VDD
-                                        );
+  if ( !ischip ) {
+    cmess2 << "     o  Reading power grid.\n";
+    powers[MBK::CALU1] = new MBK::CPowers ( fig
+                                          , xadjust - xoffsettrack
+                                          , yoffsetslice
+                                          , C_HORIZONTAL
+                                          , MBK::ALU1
+                                          , D::WIDTH_VDD
+                                          );
+  }
 
 
   // Forbid the use of the edges of the routing box (only allow
@@ -360,30 +523,34 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
   coord = drgrid->origin;
 
   // Left & Right vertical edges.
-  for (x = 0; x < mX; x += mX - 1) {
-    for (y = 0; y < mY; y++) {
-      for (zz = 1; zz < mZ; zz++) {
-        node = &( coord.set(x,y,zz).node() );
-
-        if ( !node->terminal() ) node->data.obstacle = true;
+  if ( xadjust == 0 ) {
+    for (x = 0; x < mX; x += mX - 1) {
+      for (y = 0; y < mY; y++) {
+        for (zz = 1; zz < mZ; zz++) {
+          node = &( coord.set(x,y,zz).node() );
+          
+          if ( !node->terminal() ) node->data.obstacle = true;
+        }
       }
     }
   }
 
   // Bottom & top horizontal edges.
-  for (y = 0; y < mY; y += mY - 1) {
-    for (x = 0; x < mX; x++) {
-      for (zz = 1; zz < mZ; zz++) {
-        node = &( coord.set(x,y,zz).node() );
-
-        if ( !node->terminal() ) node->data.obstacle = true;
+  if ( xadjust == 0 ) {
+    for (y = 0; y < mY; y += mY - 1) {
+      for (x = 0; x < mX; x++) {
+        for (zz = 1; zz < mZ; zz++) {
+          node = &( coord.set(x,y,zz).node() );
+          
+          if ( !node->terminal() ) node->data.obstacle = true;
+        }
       }
     }
   }
 
   // On routing level above zupper (ALU4), use only half of the tracks.
   for (zz = zup; zz < mZ; zz++) {
-    switch (zz % 2) {
+    switch ((zz+rotate) % 2) {
       case 0:
         // Vertical tracks.
         for (x = 2; x < mX; x += 2) {
@@ -471,11 +638,11 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
           // Dump the current one.
           if (seg.X1 < seg.X2) {
             // This is not a "dot" segment (i.e a VIA).
-            fig->addphseg (seg,pNet->external);
+            fig->addphseg (seg,pNet->external,ischip);
           } else if (z % 2) {
             char layer = seg.LAYER;
             seg.LAYER = MBK::layer2TALU (seg.LAYER);
-            fig->addphseg (seg,false);
+            fig->addphseg (seg,false,ischip);
             seg.LAYER = layer;
           }
 
@@ -490,28 +657,28 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
             // We encounter the left edge of a segment.
             inseg = true;
 
-            seg.X1    = fig->XAB1() + x * D::X_GRID;
-            seg.Y1    = fig->YAB1() + y * D::Y_GRID;
-            seg.Y2    = fig->YAB1() + y * D::Y_GRID;
+            seg.X1    = xoffsetgrid + x * D::X_GRID;
+            seg.Y1    = yoffsetgrid + y * D::Y_GRID;
+            seg.Y2    = yoffsetgrid + y * D::Y_GRID;
             seg.NAME  = MBK::namealloc(pNet->name.c_str ());
             seg.WIDTH = MBK::env.z2width (z);
 
-            if (pNet->external) seg.LAYER = MBK::env.z2calu (z);
-            else                seg.LAYER = MBK::env.z2alu (z);
+            if (pNet->external && !ischip) seg.LAYER = MBK::env.z2calu (z);
+            else                           seg.LAYER = MBK::env.z2alu (z);
           }
 
           // Update the right edge.
-          seg.X2 = fig->XAB1() + x * D::X_GRID;
+          seg.X2 = xoffsetgrid + x * D::X_GRID;
         } else {
           if (inseg) {
             // Dump the current one.
             if (seg.X1 < seg.X2) {
               // This is not a "dot" segment (i.e a VIA).
-              fig->addphseg (seg,pNet->external);
+              fig->addphseg (seg,pNet->external,ischip);
             } else if (z % 2) {
               char layer = seg.LAYER;
               seg.LAYER = MBK::layer2TALU (seg.LAYER);
-              fig->addphseg (seg,false);
+              fig->addphseg (seg,false,ischip);
               seg.LAYER = layer;
             }
           }
@@ -525,11 +692,11 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
         // This segment touch the AB.
         if (seg.X1 < seg.X2) {
           // This is not a "dot" segment (i.e a VIA).
-          fig->addphseg (seg,pNet->external);
+          fig->addphseg (seg,pNet->external,ischip);
         } else if (z % 2 ) {
           char layer = seg.LAYER;
           seg.LAYER = MBK::layer2TALU (seg.LAYER);
-          fig->addphseg (seg,false);
+          fig->addphseg (seg,false,ischip);
           seg.LAYER = layer;
         }
       }
@@ -551,11 +718,11 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
           // Dump the current one.
           if (seg.Y1 < seg.Y2) {
             // This is not a "dot" segment (i.e a VIA).
-            fig->addphseg (seg,pNet->external);
+            fig->addphseg (seg,pNet->external,ischip);
           } else if (! (z % 2)) {
             char layer = seg.LAYER;
             seg.LAYER = MBK::layer2TALU (seg.LAYER);
-            fig->addphseg (seg,false);
+            fig->addphseg (seg,false,ischip);
             seg.LAYER = layer;
           }
 
@@ -570,29 +737,29 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
             // We encounter the left edge of a segment.
             inseg = true;
 
-            seg.X1    = fig->XAB1() + x * D::X_GRID;
-            seg.X2    = fig->XAB1() + x * D::X_GRID;
-            seg.Y1    = fig->YAB1() + y * D::Y_GRID;
+            seg.X1    = xoffsetgrid + x * D::X_GRID;
+            seg.X2    = xoffsetgrid + x * D::X_GRID;
+            seg.Y1    = yoffsetgrid + y * D::Y_GRID;
             seg.NAME  = MBK::namealloc(pNet->name.c_str ());
             seg.WIDTH = MBK::env.z2width (z);
 
-            if (pNet->external) seg.LAYER = MBK::env.z2calu (z);
-            else                seg.LAYER = MBK::env.z2alu (z);
+            if (pNet->external && !ischip) seg.LAYER = MBK::env.z2calu (z);
+            else                           seg.LAYER = MBK::env.z2alu (z);
 
           }
 
           // Update the right edge.
-          seg.Y2 = fig->YAB1() + y * D::Y_GRID;
+          seg.Y2 = yoffsetgrid + y * D::Y_GRID;
         } else {
           if (inseg) {
             // Dump the current one.
             if (seg.Y1 < seg.Y2) {
               // This is not a "dot" segment (i.e a VIA).
-              fig->addphseg (seg,pNet->external);
+              fig->addphseg (seg,pNet->external,ischip);
             } else if (! (z % 2)) {
               char layer = seg.LAYER;
               seg.LAYER = MBK::layer2TALU (seg.LAYER);
-              fig->addphseg (seg,false);
+              fig->addphseg (seg,false,ischip);
               seg.LAYER = layer;
             }
           }
@@ -606,11 +773,11 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
         // This segment touch the AB.
         if (seg.Y1 < seg.Y2) {
           // This is not a "dot" segment (i.e a VIA).
-          fig->addphseg (seg,pNet->external);
+          fig->addphseg (seg,pNet->external,ischip);
         } else if (! (z % 2)) {
           char layer = seg.LAYER;
           seg.LAYER = MBK::layer2TALU (seg.LAYER);
-          fig->addphseg (seg,false);
+          fig->addphseg (seg,false,ischip);
           seg.LAYER = layer;
         }
       }
@@ -650,8 +817,8 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
             if (spaceVIA < pitch) continue;
 
             via.TYPE = MBK::env.z2via (z);
-            via.XVIA = fig->XAB1() + x * D::X_GRID;
-            via.YVIA = fig->YAB1() + y * D::Y_GRID;
+            via.XVIA = xoffsetgrid + x * D::X_GRID;
+            via.YVIA = yoffsetgrid + y * D::Y_GRID;
             via.NAME = MBK::namealloc(pNetTop->name.c_str ());
 
             fig->addphvia (via);
@@ -681,8 +848,8 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
             if (spaceVIA < pitch) continue;
 
             via.TYPE = MBK::env.z2via (z);
-            via.XVIA = fig->XAB1() + x * D::X_GRID;
-            via.YVIA = fig->YAB1() + y * D::Y_GRID;
+            via.XVIA = xoffsetgrid + x * D::X_GRID;
+            via.YVIA = yoffsetgrid + y * D::Y_GRID;
             via.NAME = MBK::namealloc(pNetTop->name.c_str ());
 
             fig->addphvia (via);
@@ -733,20 +900,20 @@ void  CRBox::mbkload (MBK::CFig *mbkfig, int z, int zup, int rtype)
 
     rect = itNet->second->terms[0]->rects.front ();
 
-    seg.X1    = fig->XAB1() + rect.x1 * D::X_GRID;
-    seg.X2    = fig->XAB1() + rect.x2 * D::X_GRID;
-    seg.Y1    = fig->YAB1() + rect.y1 * D::Y_GRID;
-    seg.Y2    = fig->YAB1() + rect.y2 * D::Y_GRID;
+    seg.X1    = xoffsetgrid + rect.x1 * D::X_GRID;
+    seg.X2    = xoffsetgrid + rect.x2 * D::X_GRID;
+    seg.Y1    = yoffsetgrid + rect.y1 * D::Y_GRID;
+    seg.Y2    = yoffsetgrid + rect.y2 * D::Y_GRID;
     seg.NAME  = MBK::namealloc(itNet->second->name.c_str ());
     seg.WIDTH = MBK::env.z2width (0);
     seg.LAYER = MBK::env.z2calu (0);
 
-    fig->addphseg (seg,itNet->second->external);
+    fig->addphseg (seg,itNet->second->external,ischip);
   }
 
 
   // Add powers lines.
-  powers[MBK::CALU1]->dump (fig);
+  if ( !ischip ) powers[MBK::CALU1]->dump (fig);
   
 
   cmess1 << "  o  Saving MBK figure \"" << name << "\".\n";
diff --git a/alliance/src/nero/src/UGrid.cpp b/alliance/src/nero/src/UGrid.cpp
index 8d3d2a65..3f1c6880 100644
--- a/alliance/src/nero/src/UGrid.cpp
+++ b/alliance/src/nero/src/UGrid.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: UGrid.cpp,v 1.1 2002/10/02 21:23:48 jpc Exp $
+// $Id: UGrid.cpp,v 1.2 2005/10/10 15:34:06 jpc Exp $
 //
 //  /----------------------------------------------------------------\ 
 //  |                                                                |
@@ -356,14 +356,12 @@ int  CDRGrid::iterator::manhattan (iterator &other)
 // -------------------------------------------------------------------
 // Constructor  :  "CDRGrid::CDRGrid()".
 
-CDRGrid::CDRGrid (int x, int y, int z)
+CDRGrid::CDRGrid (int xoff, int yoff, int x, int y, int z)
+  : xoffset(xoff), yoffset(yoff), X(x), Y(y), Z(z)
 {
   int    index;
 
 
-  X    = x;
-  Y    = y;
-  Z    = z;
   XY   = X  * Y;
   XYZ  = XY * Z;
   size = XY * (Z - 1);
diff --git a/alliance/src/nero/src/nero.cpp b/alliance/src/nero/src/nero.cpp
index 4ad449c8..294a2641 100644
--- a/alliance/src/nero/src/nero.cpp
+++ b/alliance/src/nero/src/nero.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: nero.cpp,v 1.8 2005/04/07 14:56:18 jpc Exp $
+// $Id: nero.cpp,v 1.9 2005/10/10 15:34:06 jpc Exp $
 //
 //  /----------------------------------------------------------------\ 
 //  |                                                                |
@@ -58,11 +58,11 @@ static void help (void)
 {
   cout << "\n"
        << "  o  Usage : \"nero [-h] [-v] [-V] [-c] [-2] [-3] [-4] [-5] [-6]\n"
-       << "                   [-L] [-G] [-p <placement>] <netlist> <layout>"
+       << "                   [-H] [-L] [-G] [-p <placement>] <netlist> <layout>"
        <<                    "\"\n\n"
        << "             \"nero [--help] [--verbose] [--very-verbose]\n"
-       << "                   [--core-dump] [--global] [--local]\n"
-       << "                   [--place <placement>] <netlist> <layout>\n"
+       << "                   [--core-dump] [--half-pitch] [--rotate] [--global]"
+       << "                   [--local] [--place <placement>] <netlist> <layout>\n"
        << "                  \"\n\n"
        << "  o  Options :\n"
        << "     [-h|--help]         := Print this message.\n"
@@ -70,6 +70,8 @@ static void help (void)
        << "     [-V|--very-verbose] := Be much more verbose...\n"
        << "     [-c|--core-dump]    := Generate core dump if an internal "
        <<         "error occurs.\n"
+       << "     [-H|--half-pitch]   := First track is at half pitch (both X & Y).\n"
+       << "     [-R|--rotate]       := Exchange preferred routing directions.\n"
        << "     [-2|--layers-2]     := Use only 2 routing layers.\n"
        << "     [-3|--layers-3]     := Use only 3 routing layers.\n"
        << "     [-4|--layers-4]     := Use only 4 routing layers.\n"
@@ -94,7 +96,7 @@ static void help (void)
 
 static void serial (void)
 {
-  cout << "                                S/N 20050406.1\n";
+  cout << "                                S/N 20051006.1\n";
 }
 
 
@@ -145,6 +147,8 @@ int  main (int argc, char *argv[])
     options.add ("V", "very-verbose");
     options.add ("h", "help");
     options.add ("c", "coredump");
+    options.add ("H", "half-pitch");
+    options.add ("R", "rotate");
     options.add ("2", "layers-2");
     options.add ("3", "layers-3");
     options.add ("4", "layers-4");
@@ -217,7 +221,12 @@ int  main (int argc, char *argv[])
     crbox = new CRBox ();
     //crbox = new CRBox (global, true);
     //cdebug.on ();
-    crbox->mbkload (fig, layers, 4, global);
+    crbox->mbkload ( fig
+                   , layers
+                   , 4
+                   , global
+                   , options["H"]->parsed
+                   , options["R"]->parsed );
     crbox->route ();
     //cdebug.off ();
     crbox->mbksave (name_routed);