diff --git a/alliance/src/nero/src/MMBK.cpp b/alliance/src/nero/src/MMBK.cpp
index e7369d3e..defb6f8c 100644
--- a/alliance/src/nero/src/MMBK.cpp
+++ b/alliance/src/nero/src/MMBK.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: MMBK.cpp,v 1.9 2008/06/11 09:20:34 jpc Exp $
+// $Id: MMBK.cpp,v 1.10 2012/05/02 14:49:23 jpc Exp $
 //
 // /-----------------------------------------------------------------\ 
 // |                                                                 |
@@ -197,25 +197,27 @@ CEnv::CEnv (void)
 
   // Copy constants values from constants namespace ("D::").
   // Routing constants, loaded now that we have SCALE_X.
-  D::X_GRID             = ::MBK::SCALE (D::_X_GRID);
-  D::Y_GRID             = ::MBK::SCALE (D::_Y_GRID);
-  D::WIDTH_VSS          = ::MBK::SCALE (D::_WIDTH_VSS);
-  D::WIDTH_VDD          = ::MBK::SCALE (D::_WIDTH_VDD);
-  D::Y_SLICE            = ::MBK::SCALE (D::_Y_SLICE);
-  D::TRACK_WIDTH_ALU1   = ::MBK::SCALE (D::_TRACK_WIDTH_ALU1);
-  D::TRACK_WIDTH_ALU2   = ::MBK::SCALE (D::_TRACK_WIDTH_ALU2);
-  D::TRACK_WIDTH_ALU3   = ::MBK::SCALE (D::_TRACK_WIDTH_ALU3);
-  D::TRACK_WIDTH_ALU4   = ::MBK::SCALE (D::_TRACK_WIDTH_ALU4);
-  D::TRACK_WIDTH_ALU5   = ::MBK::SCALE (D::_TRACK_WIDTH_ALU5);
-  D::TRACK_WIDTH_ALU6   = ::MBK::SCALE (D::_TRACK_WIDTH_ALU6);
-  D::TRACK_WIDTH_ALU7   = ::MBK::SCALE (D::_TRACK_WIDTH_ALU7);
-  D::TRACK_SPACING_ALU1 = ::MBK::SCALE (D::_TRACK_SPACING_ALU1);
-  D::TRACK_SPACING_ALU2 = ::MBK::SCALE (D::_TRACK_SPACING_ALU2);
-  D::TRACK_SPACING_ALU3 = ::MBK::SCALE (D::_TRACK_SPACING_ALU3);
-  D::TRACK_SPACING_ALU4 = ::MBK::SCALE (D::_TRACK_SPACING_ALU4);
-  D::TRACK_SPACING_ALU5 = ::MBK::SCALE (D::_TRACK_SPACING_ALU5);
-  D::TRACK_SPACING_ALU6 = ::MBK::SCALE (D::_TRACK_SPACING_ALU6);
-  D::TRACK_SPACING_ALU7 = ::MBK::SCALE (D::_TRACK_SPACING_ALU7);
+  D::X_GRID             = ::MBK::SCALE (MBK_X_GRID);
+  D::Y_GRID             = ::MBK::SCALE (MBK_Y_GRID);
+  D::WIDTH_VSS          = ::MBK::SCALE (MBK_WIDTH_VSS);
+  D::WIDTH_VDD          = ::MBK::SCALE (MBK_WIDTH_VDD);
+  D::Y_SLICE            = ::MBK::SCALE (MBK_Y_SLICE);
+  D::TRACK_WIDTH_ALU1   = ::MBK::SCALE (MBK_TRACK_WIDTH_ALU1);
+  D::TRACK_WIDTH_ALU2   = ::MBK::SCALE (MBK_TRACK_WIDTH_ALU2);
+  D::TRACK_WIDTH_ALU3   = ::MBK::SCALE (MBK_TRACK_WIDTH_ALU3);
+  D::TRACK_WIDTH_ALU4   = ::MBK::SCALE (MBK_TRACK_WIDTH_ALU4);
+  D::TRACK_WIDTH_ALU5   = ::MBK::SCALE (MBK_TRACK_WIDTH_ALU5);
+  D::TRACK_WIDTH_ALU6   = ::MBK::SCALE (MBK_TRACK_WIDTH_ALU6);
+  D::TRACK_WIDTH_ALU7   = ::MBK::SCALE (MBK_TRACK_WIDTH_ALU7);
+  D::TRACK_WIDTH_ALU8   = ::MBK::SCALE (MBK_TRACK_WIDTH_ALU8);
+  D::TRACK_SPACING_ALU1 = ::MBK::SCALE (MBK_TRACK_SPACING_ALU1);
+  D::TRACK_SPACING_ALU2 = ::MBK::SCALE (MBK_TRACK_SPACING_ALU2);
+  D::TRACK_SPACING_ALU3 = ::MBK::SCALE (MBK_TRACK_SPACING_ALU3);
+  D::TRACK_SPACING_ALU4 = ::MBK::SCALE (MBK_TRACK_SPACING_ALU4);
+  D::TRACK_SPACING_ALU5 = ::MBK::SCALE (MBK_TRACK_SPACING_ALU5);
+  D::TRACK_SPACING_ALU6 = ::MBK::SCALE (MBK_TRACK_SPACING_ALU6);
+  D::TRACK_SPACING_ALU7 = ::MBK::SCALE (MBK_TRACK_SPACING_ALU7);
+  D::TRACK_SPACING_ALU8 = ::MBK::SCALE (MBK_TRACK_SPACING_ALU8);
 
   // Grid spacing.
   grid_dx = D::X_GRID;
@@ -229,6 +231,7 @@ CEnv::CEnv (void)
   ALU2W[ALU5]  = D::TRACK_WIDTH_ALU5;
   ALU2W[ALU6]  = D::TRACK_WIDTH_ALU6;
   ALU2W[ALU7]  = D::TRACK_WIDTH_ALU7;
+  ALU2W[ALU8]  = D::TRACK_WIDTH_ALU8;
   ALU2W[CALU1] = D::TRACK_WIDTH_ALU1;
   ALU2W[CALU2] = D::TRACK_WIDTH_ALU2;
   ALU2W[CALU3] = D::TRACK_WIDTH_ALU3;
@@ -236,6 +239,7 @@ CEnv::CEnv (void)
   ALU2W[CALU5] = D::TRACK_WIDTH_ALU5;
   ALU2W[CALU6] = D::TRACK_WIDTH_ALU6;
   ALU2W[CALU7] = D::TRACK_WIDTH_ALU7;
+  ALU2W[CALU8] = D::TRACK_WIDTH_ALU8;
   ALU2W[TALU1] = D::TRACK_WIDTH_ALU1;
   ALU2W[TALU2] = D::TRACK_WIDTH_ALU2;
   ALU2W[TALU3] = D::TRACK_WIDTH_ALU3;
@@ -243,6 +247,7 @@ CEnv::CEnv (void)
   ALU2W[TALU5] = D::TRACK_WIDTH_ALU5;
   ALU2W[TALU6] = D::TRACK_WIDTH_ALU6;
   ALU2W[TALU7] = D::TRACK_WIDTH_ALU7;
+  ALU2W[TALU8] = D::TRACK_WIDTH_ALU8;
 
   // Layers minimal width.
   ALU2S[ALU1]  = D::TRACK_SPACING_ALU1;
@@ -252,6 +257,7 @@ CEnv::CEnv (void)
   ALU2S[ALU5]  = D::TRACK_SPACING_ALU5;
   ALU2S[ALU6]  = D::TRACK_SPACING_ALU6;
   ALU2S[ALU7]  = D::TRACK_SPACING_ALU7;
+  ALU2S[ALU8]  = D::TRACK_SPACING_ALU8;
   ALU2S[CALU1] = D::TRACK_SPACING_ALU1;
   ALU2S[CALU2] = D::TRACK_SPACING_ALU2;
   ALU2S[CALU3] = D::TRACK_SPACING_ALU3;
@@ -259,6 +265,7 @@ CEnv::CEnv (void)
   ALU2S[CALU5] = D::TRACK_SPACING_ALU5;
   ALU2S[CALU6] = D::TRACK_SPACING_ALU6;
   ALU2S[CALU7] = D::TRACK_SPACING_ALU7;
+  ALU2S[CALU8] = D::TRACK_SPACING_ALU8;
   ALU2S[TALU1] = D::TRACK_SPACING_ALU1;
   ALU2S[TALU2] = D::TRACK_SPACING_ALU2;
   ALU2S[TALU3] = D::TRACK_SPACING_ALU3;
@@ -266,6 +273,7 @@ CEnv::CEnv (void)
   ALU2S[TALU5] = D::TRACK_SPACING_ALU5;
   ALU2S[TALU6] = D::TRACK_SPACING_ALU6;
   ALU2S[TALU7] = D::TRACK_SPACING_ALU7;
+  ALU2S[TALU8] = D::TRACK_SPACING_ALU8;
 
   // Layer to Z translation table.
   ALU2Z[ALU1]  = 0;
@@ -275,6 +283,7 @@ CEnv::CEnv (void)
   ALU2Z[ALU5]  = 4;
   ALU2Z[ALU6]  = 5;
   ALU2Z[ALU7]  = 6;
+  ALU2Z[ALU8]  = 7;
   ALU2Z[CALU1] = 0;
   ALU2Z[CALU2] = 1;
   ALU2Z[CALU3] = 2;
@@ -282,6 +291,7 @@ CEnv::CEnv (void)
   ALU2Z[CALU5] = 4;
   ALU2Z[CALU6] = 5;
   ALU2Z[CALU7] = 6;
+  ALU2Z[CALU8] = 7;
   ALU2Z[TALU1] = 0;
   ALU2Z[TALU2] = 1;
   ALU2Z[TALU3] = 2;
@@ -289,6 +299,7 @@ CEnv::CEnv (void)
   ALU2Z[TALU5] = 4;
   ALU2Z[TALU6] = 5;
   ALU2Z[TALU7] = 6;
+  ALU2Z[TALU8] = 7;
 
   regcomp(&pxLibRegex,"p.*px",REG_EXTENDED|REG_NOSUB);
 }
diff --git a/alliance/src/nero/src/RDefs.h b/alliance/src/nero/src/RDefs.h
index 31aac80c..4e0f9ead 100644
--- a/alliance/src/nero/src/RDefs.h
+++ b/alliance/src/nero/src/RDefs.h
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: RDefs.h,v 1.5 2008/06/11 09:20:34 jpc Exp $
+// $Id: RDefs.h,v 1.6 2012/05/02 14:49:23 jpc Exp $
 //
 // /-----------------------------------------------------------------\ 
 // |                                                                 |
@@ -70,6 +70,8 @@
                           , int zup
                           , int rtype
                           , bool halfpitch
+                          , bool xhalfpitch
+                          , bool yalfpitch
                           , bool rotate
                           , set<string>* subNetList=NULL );
     public: void  mbksave (string &name) throw (except_done);
diff --git a/alliance/src/nero/src/RMBK.cpp b/alliance/src/nero/src/RMBK.cpp
index d83666ca..55936b4a 100644
--- a/alliance/src/nero/src/RMBK.cpp
+++ b/alliance/src/nero/src/RMBK.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: RMBK.cpp,v 1.17 2008/06/11 09:20:34 jpc Exp $
+// $Id: RMBK.cpp,v 1.18 2012/05/02 14:49:23 jpc Exp $
 //
 //  /----------------------------------------------------------------\ 
 //  |                                                                |
@@ -38,6 +38,8 @@ void  CRBox::mbkload (MBK::CFig *mbkfig
                      , int zup
                      , int rtype
                      , bool halfpitch
+                     , bool xhalfpitch
+                     , bool yhalfpitch
                      , bool rotate
                      , set<string>* subNetList )
 {
@@ -45,6 +47,7 @@ void  CRBox::mbkload (MBK::CFig *mbkfig
   MBK::MLosig::iterator   endSig;
   MBK::MLosig::iterator   sig;
                    long   mX, mY, mZ, x, y, zz, xadjust, yadjust, yoffsetslice;
+                   long   xpitch, ypitch;
                    long   XRW1, YRW1, XRW2, YRW2;
                    bool   use_global;
                    long   northPad, southPad, eastPad, westPad;
@@ -86,6 +89,12 @@ void  CRBox::mbkload (MBK::CFig *mbkfig
     xoffsettrack = D::X_GRID / 2;
     yoffsettrack = D::Y_GRID / 2;
   }
+  else if ( xhalfpitch ) {
+    xoffsettrack = D::X_GRID / 2;
+  }
+  else if ( yhalfpitch ) {
+    yoffsettrack = D::Y_GRID / 2;
+  }
 
   // Search for pads.
   for (itIns = fig->instances.begin(); itIns != endInstances; itIns++) {
diff --git a/alliance/src/nero/src/UConst.cpp b/alliance/src/nero/src/UConst.cpp
index 914c65b6..e727f89b 100644
--- a/alliance/src/nero/src/UConst.cpp
+++ b/alliance/src/nero/src/UConst.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: UConst.cpp,v 1.3 2005/10/13 12:44:40 jpc Exp $
+// $Id: UConst.cpp,v 1.4 2012/05/02 14:49:23 jpc Exp $
 //
 // /-----------------------------------------------------------------\ 
 // |                                                                 |
@@ -52,6 +52,7 @@ namespace D {
 
 
   // MBK Routing related constants.
+#if 0
   const long _X_GRID             = 5;
   const long _Y_GRID             = 5;
   const long _Y_SLICE            = 50;
@@ -71,6 +72,7 @@ namespace D {
   const long _TRACK_SPACING_ALU5 = 8;
   const long _TRACK_SPACING_ALU6 = 8;
   const long _TRACK_SPACING_ALU7 = 8;
+#endif
 
   long  X_GRID;
   long  Y_GRID;
@@ -84,6 +86,7 @@ namespace D {
   long  TRACK_WIDTH_ALU5;
   long  TRACK_WIDTH_ALU6;
   long  TRACK_WIDTH_ALU7;
+  long  TRACK_WIDTH_ALU8;
   long  TRACK_SPACING_ALU1;
   long  TRACK_SPACING_ALU2;
   long  TRACK_SPACING_ALU3;
@@ -91,6 +94,7 @@ namespace D {
   long  TRACK_SPACING_ALU5;
   long  TRACK_SPACING_ALU6;
   long  TRACK_SPACING_ALU7;
+  long  TRACK_SPACING_ALU8;
 
 
 
diff --git a/alliance/src/nero/src/UDefs.h b/alliance/src/nero/src/UDefs.h
index 5b9cba51..547ecfac 100644
--- a/alliance/src/nero/src/UDefs.h
+++ b/alliance/src/nero/src/UDefs.h
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: UDefs.h,v 1.3 2005/10/13 12:44:40 jpc Exp $
+// $Id: UDefs.h,v 1.4 2012/05/02 14:49:23 jpc Exp $
 //
 // /-----------------------------------------------------------------\ 
 // |                                                                 |
@@ -89,6 +89,7 @@ namespace D {
   extern const long _TRACK_WIDTH_ALU5;
   extern const long _TRACK_WIDTH_ALU6;
   extern const long _TRACK_WIDTH_ALU7;
+  extern const long _TRACK_WIDTH_ALU8;
   extern const long _TRACK_SPACING_ALU1;
   extern const long _TRACK_SPACING_ALU2;
   extern const long _TRACK_SPACING_ALU3;
@@ -96,6 +97,7 @@ namespace D {
   extern const long _TRACK_SPACING_ALU5;
   extern const long _TRACK_SPACING_ALU6;
   extern const long _TRACK_SPACING_ALU7;
+  extern const long _TRACK_SPACING_ALU8;
 
   extern long  X_GRID;
   extern long  Y_GRID;
@@ -109,6 +111,7 @@ namespace D {
   extern long  TRACK_WIDTH_ALU5;
   extern long  TRACK_WIDTH_ALU6;
   extern long  TRACK_WIDTH_ALU7;
+  extern long  TRACK_WIDTH_ALU8;
   extern long  TRACK_SPACING_ALU1;
   extern long  TRACK_SPACING_ALU2;
   extern long  TRACK_SPACING_ALU3;
@@ -116,6 +119,7 @@ namespace D {
   extern long  TRACK_SPACING_ALU5;
   extern long  TRACK_SPACING_ALU6;
   extern long  TRACK_SPACING_ALU7;
+  extern long  TRACK_SPACING_ALU8;
 
 }
 
diff --git a/alliance/src/nero/src/nero.cpp b/alliance/src/nero/src/nero.cpp
index d26ecf41..2008b649 100644
--- a/alliance/src/nero/src/nero.cpp
+++ b/alliance/src/nero/src/nero.cpp
@@ -1,7 +1,7 @@
 
 // -*- C++ -*-
 //
-// $Id: nero.cpp,v 1.12 2008/06/11 09:20:35 jpc Exp $
+// $Id: nero.cpp,v 1.13 2012/05/02 14:49:23 jpc Exp $
 //
 //  /----------------------------------------------------------------\ 
 //  |                                                                |
@@ -71,6 +71,8 @@ static void help (void)
        << "     [-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"
+       << "     [-x|--half-pitch-x] := First track is at half pitch (X).\n"
+       << "     [-y|--half-pitch-y] := First track is at half pitch (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"
@@ -151,6 +153,8 @@ int  main (int argc, char *argv[])
     options.add ("h", "help");
     options.add ("c", "coredump");
     options.add ("H", "half-pitch");
+    options.add ("x", "half-pitch-x");
+    options.add ("y", "half-pitch-y");
     options.add ("R", "rotate");
     options.add ("2", "layers-2");
     options.add ("3", "layers-3");
@@ -249,6 +253,8 @@ int  main (int argc, char *argv[])
                    , 4
                    , global
                    , options["H"]->parsed
+                   , options["x"]->parsed
+                   , options["y"]->parsed
                    , options["R"]->parsed
                    , netSet );
     //cdebug.off ();