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diff --git a/src/systemc/dt/bit/sc_bit.cc b/src/systemc/dt/bit/sc_bit.cc
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+++ b/src/systemc/dt/bit/sc_bit.cc
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+/*****************************************************************************
+
+  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
+  more contributor license agreements.  See the NOTICE file distributed
+  with this work for additional information regarding copyright ownership.
+  Accellera licenses this file to you under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with the
+  License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+  implied.  See the License for the specific language governing
+  permissions and limitations under the License.
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+  sc_bit.cpp -- Bit class.
+
+  Original Author: Gene Bushuyev, Synopsys, Inc.
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
+  changes you are making here.
+
+      Name, Affiliation, Date:
+  Description of Modification:
+
+ *****************************************************************************/
+
+
+// $Log: sc_bit.cpp,v $
+// Revision 1.1.1.1  2006/12/15 20:20:04  acg
+// SystemC 2.3
+//
+// Revision 1.6  2006/04/12 20:17:52  acg
+//  Andy Goodrich: enabled deprecation message for sc_bit.
+//
+// Revision 1.5  2006/01/25 00:31:15  acg
+//  Andy Goodrich: Changed over to use a standard message id of
+//  SC_ID_IEEE_1666_DEPRECATION for all deprecation messages.
+//
+// Revision 1.4  2006/01/24 20:50:55  acg
+// Andy Goodrich: added warnings indicating that sc_bit is deprecated and that
+// the C bool data type should be used in its place.
+//
+// Revision 1.3  2006/01/13 18:53:53  acg
+// Andy Goodrich: added $Log command so that CVS comments are reproduced in
+// the source.
+//
+
+#include <sstream>
+
+#include "systemc/ext/dt/bit/sc_bit.hh"
+#include "systemc/ext/dt/bit/sc_logic.hh"
+#include "systemc/ext/utils/sc_report_handler.hh"
+
+namespace sc_dt
+{
+
+// ----------------------------------------------------------------------------
+//  CLASS : sc_bit
+//
+//  Bit class.
+//  Note: VSIA compatibility indicated.
+// ----------------------------------------------------------------------------
+
+// support methods
+void
+sc_bit::invalid_value(char c)
+{
+    std::stringstream msg;
+    msg << "sc_bit('" << c << "')";
+    SC_REPORT_ERROR("value is not valid", msg.str().c_str());
+    sc_core::sc_abort(); // can't recover from here
+}
+
+void
+sc_bit::invalid_value(int i)
+{
+    std::stringstream msg;
+    msg << "sc_bit(" << i << ")";
+    SC_REPORT_ERROR("value is not valid", msg.str().c_str());
+    sc_core::sc_abort(); // can't recover from here
+}
+
+// constructors
+sc_bit::sc_bit(const sc_logic &a) : m_val(a.to_bool()) // non-VSIA
+{
+   sc_deprecated_sc_bit();
+}
+
+// assignment operators
+sc_bit &
+sc_bit::operator = (const sc_logic &b) // non-VSIA
+{
+    return (*this = sc_bit(b));
+}
+
+// other methods
+void
+sc_bit::scan(::std::istream &is)
+{
+    bool b;
+    is >> b;
+    *this = b;
+}
+
+void
+sc_deprecated_sc_bit()
+{
+    static bool warn_sc_bit_deprecated = true;
+    if (warn_sc_bit_deprecated) {
+        warn_sc_bit_deprecated = false;
+        SC_REPORT_INFO("/IEEE_Std_1666/deprecated",
+            "sc_bit is deprecated, use bool instead");
+    }
+}
+
+} // namespace sc_dt