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diff --git a/ext/mcpat/cacti/wire.h b/ext/mcpat/cacti/wire.h
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+/*****************************************************************************
+ *                                McPAT/CACTI
+ *                      SOFTWARE LICENSE AGREEMENT
+ *            Copyright 2012 Hewlett-Packard Development Company, L.P.
+ *                          All Rights Reserved
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.”
+ *
+ ***************************************************************************/
+
+
+
+#ifndef __WIRE_H__
+#define __WIRE_H__
+
+#include <iostream>
+#include <list>
+
+#include "assert.h"
+#include "basic_circuit.h"
+#include "cacti_interface.h"
+#include "component.h"
+#include "parameter.h"
+
+class Wire : public Component
+{
+  public:
+    Wire(enum Wire_type wire_model, double len /* in u*/,
+         int nsense = 1/* no. of sense amps connected to the low-swing wire */,
+         double width_scaling = 1,
+         double spacing_scaling = 1,
+         enum Wire_placement wire_placement = outside_mat,
+         double resistivity = CU_RESISTIVITY,
+         TechnologyParameter::DeviceType *dt = &(g_tp.peri_global));
+    ~Wire();
+
+    Wire( double width_scaling = 1,
+         double spacing_scaling = 1,
+         enum Wire_placement wire_placement = outside_mat,
+         double resistivity = CU_RESISTIVITY,
+         TechnologyParameter::DeviceType *dt = &(g_tp.peri_global)
+    ); // should be used only once for initializing static members
+    void init_wire();
+
+    void calculate_wire_stats();
+    void delay_optimal_wire();
+    double wire_cap(double len, bool call_from_outside=false);
+    double wire_res(double len);
+    void low_swing_model();
+    double signal_fall_time();
+    double signal_rise_time();
+    double sense_amp_input_cap();
+
+    enum Wire_type wt;
+    double wire_spacing;
+    double wire_width;
+    enum Wire_placement wire_placement;
+    double repeater_size;
+    double repeater_spacing;
+    double wire_length;
+    double in_rise_time, out_rise_time;
+
+    void set_in_rise_time(double rt)
+    {
+      in_rise_time = rt;
+    }
+    static Component global;
+    static Component global_5;
+    static Component global_10;
+    static Component global_20;
+    static Component global_30;
+    static Component low_swing;
+    static double wire_width_init;
+    static double wire_spacing_init;
+    void print_wire();
+
+  private:
+
+    int nsense; // no. of sense amps connected to a low-swing wire if it
+                // is broadcasting data to multiple destinations
+    // width and spacing scaling factor can be used
+    // to model low level wires or special
+    // fat wires
+    double w_scale, s_scale;
+    double resistivity;
+    powerDef wire_model (double space, double size, double *delay);
+    list <Component> repeated_wire;
+    void update_fullswing();
+    static int initialized;
+
+
+    //low-swing
+    Component transmitter;
+    Component l_wire;
+    Component sense_amp;
+
+    double min_w_pmos;
+
+    TechnologyParameter::DeviceType *deviceType;
+
+};
+
+#endif