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diff --git a/source/mupen64plus-video-arachnoid/src/ucodes/UCode4.cpp b/source/mupen64plus-video-arachnoid/src/ucodes/UCode4.cpp
new file mode 100755
index 0000000..fe81a9f
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+++ b/source/mupen64plus-video-arachnoid/src/ucodes/UCode4.cpp
@@ -0,0 +1,126 @@
+/******************************************************************************
+ * Arachnoid Graphics Plugin for Mupen64Plus
+ * http://bitbucket.org/wahrhaft/mupen64plus-video-arachnoid/
+ *
+ * Copyright (C) 2007 Kristofer Karlsson, Rickard Niklasson
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *****************************************************************************/
+
+#include "UCode4.h"
+#include "UCode0.h"
+#include "GBI.h"
+#include "RSP.h"
+#include "UCodeDefs.h"
+#include "GBIDefs.h"
+#include "Logger.h"
+
+#define F3DWRUS_TRI2        0xB1
+
+//-----------------------------------------------------------------------------
+// Static Variables
+//-----------------------------------------------------------------------------
+GBI* UCode4::m_gbi = 0;
+RSP* UCode4::m_rsp = 0;   //!< Pointer to Reality Signal Processor 
+
+//-----------------------------------------------------------------------------
+//! Constructor
+//-----------------------------------------------------------------------------
+UCode4::UCode4()
+{
+}
+
+//-----------------------------------------------------------------------------
+//! Destructor
+//-----------------------------------------------------------------------------
+UCode4::~UCode4()
+{
+}
+
+//-----------------------------------------------------------------------------
+//! Initialize
+//-----------------------------------------------------------------------------
+void UCode4::initialize(GBI* gbi, RSP* rsp)
+{
+    m_gbi = gbi;
+    m_rsp = rsp;
+}
+
+//-----------------------------------------------------------------------------
+//! Initialize GBI
+//-----------------------------------------------------------------------------
+void UCode4::initializeGBI()
+{
+    UCode0::initializeGBI(m_gbi);
+
+    //Init special Wave Race functions
+    GBI_SetGBI( GBI::G_VTX,                 F3D_VTX,                 m_gbi->m_cmds,    WaveRace64_Vertex );
+    GBI_SetGBI( GBI::G_TRI1,                F3D_TRI1,                m_gbi->m_cmds,    WaveRace64_Tri1 );
+    GBI_SetGBI( GBI::G_QUAD,                F3D_QUAD,                m_gbi->m_cmds,    WaveRace64_Quad );
+    GBI_SetGBI( GBI::G_TRI2,                F3DWRUS_TRI2,            m_gbi->m_cmds,    WaveRace64_Tri2 );
+}
+
+//-----------------------------------------------------------------------------
+//! Add Vertices
+//! @param ucode instruction from displaylist with input data
+//-----------------------------------------------------------------------------
+void UCode4::WaveRace64_Vertex(MicrocodeArgument* ucode)
+{
+    Logger::getSingleton().printMsg("WaveRace64_Vertex", M64MSG_VERBOSE);
+    RSPUCodeAddVerticesWaveRace64* temp = (RSPUCodeAddVerticesWaveRace64*)ucode;
+
+    //Add Vertices
+    m_rsp->RSP_Vertex(temp->segmentAddress, temp->numVertices, temp->firstVertexIndex/5);
+}
+
+//-----------------------------------------------------------------------------
+//! Add one Triangle
+//! @param ucode instruction from displaylist with input data
+//-----------------------------------------------------------------------------
+void UCode4::WaveRace64_Tri1(MicrocodeArgument* ucode)
+{
+    Logger::getSingleton().printMsg("WaveRace64_Tri1", M64MSG_VERBOSE);
+    RSPUCodeAddOneTriangleF3D* temp = (RSPUCodeAddOneTriangleF3D*)ucode;
+
+    //Add triangle
+    m_rsp->RSP_1Triangle(temp->index0 / 5, temp->index1 / 5, temp->index2 / 5 /*,temp->flag,*/ );
+}
+
+//-----------------------------------------------------------------------------
+//! Add 2 Triangles
+//! @param ucode instruction from displaylist with input data
+//-----------------------------------------------------------------------------
+void UCode4::WaveRace64_Tri2(MicrocodeArgument* ucode)
+{
+    Logger::getSingleton().printMsg("WaveRace64_Tri2", M64MSG_VERBOSE);
+    RSPUCodeAddTwoTrianglesWaveRace64* temp = (RSPUCodeAddTwoTrianglesWaveRace64*)ucode;
+
+    //Add Two triangles
+    m_rsp->RSP_2Triangles( temp->v0 / 5, temp->v1 / 5, temp->v2 / 5, 0,
+                           temp->v3 / 5, temp->v4 / 5, temp->v5 / 5, 0);
+}
+
+//-----------------------------------------------------------------------------
+//! Add Quad
+//! @param ucode instruction from displaylist with input data
+//-----------------------------------------------------------------------------
+void UCode4::WaveRace64_Quad(MicrocodeArgument* ucode)
+{
+    Logger::getSingleton().printMsg("WaveRace64_Quad", M64MSG_VERBOSE);
+    RSPUCodeAddOneQuadF3D* temp = (RSPUCodeAddOneQuadF3D*)ucode;
+
+    //Add Quad
+    m_rsp->RSP_1Quadrangle(temp->index0/5, temp->index1/5, temp->index2/5, temp->index3/5);
+}