diff --git a/Src/Graphics/New3D/PolyHeader.h b/Src/Graphics/New3D/PolyHeader.h
index c10f339..683e461 100644
--- a/Src/Graphics/New3D/PolyHeader.h
+++ b/Src/Graphics/New3D/PolyHeader.h
@@ -31,7 +31,7 @@ xxxxxxxx xxxxxxxx xxxxxxxx--------		Polygon normal X coordinate(2.22 fixed point
 -------- -------- -------- ----x---		1 = smooth shading, 0 = flat shading
 -------- -------- -------- -----x--		If set, this is the last polygon
 -------- -------- -------- ------x-		Poly color, 1 = RGB, 0 = color table
--------- -------- -------- -------x		No los return ?
+-------- -------- -------- -------x		No los return (line of sight)
 
 0x02: 
 xxxxxxxx xxxxxxxx xxxxxxxx --------		Polygon normal Y coordinate(2.22 fixed point)
@@ -50,7 +50,7 @@ xxxxxxxx xxxxxxxx xxxxxxxx --------		Polygon normal Z coordinate(2.22 fixed poin
 
 0x04: 
 xxxxxxxx xxxxxxxx xxxxxxxx --------		Color (RGB888 or two 12-bit indexes, sensor color and color)
--------- -------- -------- x-------		Translator map enable ? (Seems to be some 4/5bit colour format. Max observed value=16)
+-------- -------- -------- x-------		Translator map enable (multiplies colour values by 16)
 -------- -------- -------- -x------		Texture page
 -------- -------- -------- ---xxxxx		Upper 5 bits of texture U coordinate
 
diff --git a/Src/Model3/IRQ.cpp b/Src/Model3/IRQ.cpp
index 4022128..870671a 100644
--- a/Src/Model3/IRQ.cpp
+++ b/Src/Model3/IRQ.cpp
@@ -112,7 +112,9 @@ void CIRQ::Init(void)
 	// this function really only exists for consistency with other device classes
 }
 
-CIRQ::CIRQ(void)
+CIRQ::CIRQ(void) :
+	irqEnable(0),
+	irqState(0)
 {	
 	DebugLog("Built IRQ controller\n");
 }
diff --git a/Src/Model3/MPC10x.cpp b/Src/Model3/MPC10x.cpp
index 4313b51..27707a6 100644
--- a/Src/Model3/MPC10x.cpp
+++ b/Src/Model3/MPC10x.cpp
@@ -346,14 +346,15 @@ void CMPC10x::Init(void)
  *
  * Constructor.
  */
-CMPC10x::CMPC10x(void)
+CMPC10x::CMPC10x(void) :
+	regs{},
+	PCIBus(nullptr),
+	model(0x105),		// default to MPC105
+	pciBus(0),
+	pciDevice(0),
+	pciFunction(0),
+	pciReg(0)
 {	
-	PCIBus = NULL;
-	model = 0x105;	// default to MPC105
-	pciBus = 0;
-	pciDevice = 0;
-	pciFunction = 0;
-	pciReg = 0;
 	DebugLog("Built MPC10x\n");
 }
 
@@ -364,6 +365,6 @@ CMPC10x::CMPC10x(void)
  */
 CMPC10x::~CMPC10x(void)
 {
-	PCIBus = NULL;
+	PCIBus = nullptr;
 	DebugLog("Destroyed MPC10x\n");
 }
diff --git a/Src/Model3/Real3D.cpp b/Src/Model3/Real3D.cpp
index 1121114..d7d34dd 100644
--- a/Src/Model3/Real3D.cpp
+++ b/Src/Model3/Real3D.cpp
@@ -969,7 +969,30 @@ Result CReal3D::Init(const uint8_t *vromPtr, IBus *BusObjectPtr, CIRQ *IRQObject
 
 CReal3D::CReal3D(const Util::Config::Node &config)
   : m_config(config),
-    m_gpuMultiThreaded(config["GPUMultiThreaded"].ValueAs<bool>())
+    m_gpuMultiThreaded(config["GPUMultiThreaded"].ValueAs<bool>()),
+    Bus(nullptr),
+    IRQ(nullptr),
+    commandPortWritten(false),
+    commandPortWrittenRO(false),
+    cullingRAMHi(nullptr),
+    cullingRAMHiDirty(nullptr),
+    cullingRAMHiRO(nullptr),
+    dmaConfig(0),
+    dmaData(0),
+    dmaDest(0),
+    dmaIRQ(0),
+    dmaLength(0),
+    dmaSrc(0),
+    dmaStatus(0),
+    dmaUnknownReg(0),
+    m_modeword{},
+    m_pingPong(0),
+    pciID(0),
+    polyRAMDirty(nullptr),
+    polyRAMRO(nullptr),
+    step(0),
+    textureRAMDirty(nullptr),
+    textureRAMRO(nullptr)
 {
   Render3D = NULL;
   memoryPool = NULL;
diff --git a/Src/Version.h b/Src/Version.h
index a6e3138..6f7ba6e 100644
--- a/Src/Version.h
+++ b/Src/Version.h
@@ -29,7 +29,7 @@
 #define INCLUDED_VERSION_H
 
 #ifndef SUPERMODEL_VERSION
-#define SUPERMODEL_VERSION	"0.3a-905bfa2-mm DirtBagXon (Sinden)"
+#define SUPERMODEL_VERSION	"0.3a-8fd480f-mm DirtBagXon (Sinden)"
 #endif
 
 #endif	// INCLUDED_VERSION_H