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diff --git a/src/mem/ruby/network/garnet-fixed-pipeline/OutputUnit_d.cc b/src/mem/ruby/network/garnet-fixed-pipeline/OutputUnit_d.cc
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+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * 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.
+ */
+
+/*
+ * OutputUnit_d.C
+ *
+ * Niket Agarwal, Princeton University
+ *
+ * */
+
+#include "mem/ruby/network/garnet-fixed-pipeline/OutputUnit_d.hh"
+#include "mem/ruby/network/garnet-fixed-pipeline/Router_d.hh"
+#include "mem/ruby/network/garnet-flexible-pipeline/NetworkConfig.hh"
+
+OutputUnit_d::OutputUnit_d(int id, Router_d *router)
+{
+        m_id = id;
+        m_router = router;
+        m_num_vcs = m_router->get_num_vcs();
+        m_out_buffer = new flitBuffer_d();
+
+        for(int i = 0; i < m_num_vcs; i++)
+        {
+                m_outvc_state.insertAtBottom(new OutVcState_d(i));
+        }
+}
+
+OutputUnit_d::~OutputUnit_d()
+{
+        delete m_out_buffer;
+        m_outvc_state.deletePointers();
+}
+
+void OutputUnit_d::decrement_credit(int out_vc)
+{
+        m_outvc_state[out_vc]->decrement_credit();
+        m_router->update_incredit(m_outvc_state[out_vc]->get_inport(), m_outvc_state[out_vc]->get_invc(), m_outvc_state[out_vc]->get_credit_count());
+}
+
+void OutputUnit_d::wakeup()
+{
+        if(m_credit_link->isReady())
+        {
+                flit_d *t_flit = m_credit_link->consumeLink();
+                int out_vc = t_flit->get_vc();
+                m_outvc_state[out_vc]->increment_credit();
+                m_router->update_incredit(m_outvc_state[out_vc]->get_inport(), m_outvc_state[out_vc]->get_invc(), m_outvc_state[out_vc]->get_credit_count());
+
+                if(t_flit->is_free_signal())
+                        set_vc_state(IDLE_, out_vc);
+
+                delete t_flit;
+        }
+}
+
+flitBuffer_d* OutputUnit_d::getOutQueue()
+{
+        return m_out_buffer;
+}
+
+void OutputUnit_d::set_out_link(NetworkLink_d *link)
+{
+        m_out_link = link;
+}
+
+void OutputUnit_d::set_credit_link(CreditLink_d *credit_link)
+{
+        m_credit_link = credit_link;
+}
+
+void OutputUnit_d::update_vc(int vc, int in_port, int in_vc)
+{
+        m_outvc_state[vc]->setState(ACTIVE_, g_eventQueue_ptr->getTime() + 1);
+        m_outvc_state[vc]->set_inport(in_port);
+        m_outvc_state[vc]->set_invc(in_vc);
+        m_router->update_incredit(in_port, in_vc, m_outvc_state[vc]->get_credit_count());
+}
+
+void OutputUnit_d::printConfig(ostream& out)
+{
+        out << endl;
+        out << "OutputUnit Configuration" << endl;
+        out << "---------------------" << endl;
+        out << "id = " << m_id << endl;
+        out << "Out link is " << m_out_link->get_id() << endl;
+}