diff --git a/Source/Project64-core/N64System/MemoryHandler/CartridgeDomain2Address1Handler.cpp b/Source/Project64-core/N64System/MemoryHandler/CartridgeDomain2Address1Handler.cpp
new file mode 100644
index 000000000..d4cc71042
--- /dev/null
+++ b/Source/Project64-core/N64System/MemoryHandler/CartridgeDomain2Address1Handler.cpp
@@ -0,0 +1,112 @@
+#include "stdafx.h"
+#include "CartridgeDomain2Address1Handler.h"
+#include <Project64-core\N64System\Mips\Register.h>
+#include <Project64-core\N64System\Mips\Disk.h>
+
+DiskInterfaceReg::DiskInterfaceReg(uint32_t * DiskInterface) :
+    ASIC_DATA(DiskInterface[0]),
+    ASIC_MISC_REG(DiskInterface[1]),
+    ASIC_STATUS(DiskInterface[2]),
+    ASIC_CUR_TK(DiskInterface[3]),
+    ASIC_BM_STATUS(DiskInterface[4]),
+    ASIC_ERR_SECTOR(DiskInterface[5]),
+    ASIC_SEQ_STATUS(DiskInterface[6]),
+    ASIC_CUR_SECTOR(DiskInterface[7]),
+    ASIC_HARD_RESET(DiskInterface[8]),
+    ASIC_C1_S0(DiskInterface[9]),
+    ASIC_HOST_SECBYTE(DiskInterface[10]),
+    ASIC_C1_S2(DiskInterface[11]),
+    ASIC_SEC_BYTE(DiskInterface[12]),
+    ASIC_C1_S4(DiskInterface[13]),
+    ASIC_C1_S6(DiskInterface[14]),
+    ASIC_CUR_ADDR(DiskInterface[15]),
+    ASIC_ID_REG(DiskInterface[16]),
+    ASIC_TEST_REG(DiskInterface[17]),
+    ASIC_TEST_PIN_SEL(DiskInterface[18]),
+    ASIC_CMD(DiskInterface[19]),
+    ASIC_BM_CTL(DiskInterface[20]),
+    ASIC_SEQ_CTL(DiskInterface[21])
+{
+}
+
+CartridgeDomain2Address1Handler::CartridgeDomain2Address1Handler(CRegisters & Reg) :
+    DiskInterfaceReg(Reg.m_DiskInterface)
+{
+}
+
+bool CartridgeDomain2Address1Handler::Read32(uint32_t Address, uint32_t & Value)
+{
+    // 64DD registers
+    if (EnableDisk())
+    {
+        switch (Address & 0x1FFFFFFF)
+        {
+        case 0x05000500: Value = ASIC_DATA; break;
+        case 0x05000504: Value = ASIC_MISC_REG; break;
+        case 0x05000508:
+            Value = ASIC_STATUS;
+            DiskGapSectorCheck();
+            break;
+        case 0x0500050C: Value = ASIC_CUR_TK; break;
+        case 0x05000510: Value = ASIC_BM_STATUS; break;
+        case 0x05000514: Value = ASIC_ERR_SECTOR; break;
+        case 0x05000518: Value = ASIC_SEQ_STATUS; break;
+        case 0x0500051C: Value = ASIC_CUR_SECTOR; break;
+        case 0x05000520: Value = ASIC_HARD_RESET; break;
+        case 0x05000524: Value = ASIC_C1_S0; break;
+        case 0x05000528: Value = ASIC_HOST_SECBYTE; break;
+        case 0x0500052C: Value = ASIC_C1_S2; break;
+        case 0x05000530: Value = ASIC_SEC_BYTE; break;
+        case 0x05000534: Value = ASIC_C1_S4; break;
+        case 0x05000538: Value = ASIC_C1_S6; break;
+        case 0x0500053C: Value = ASIC_CUR_ADDR; break;
+        case 0x05000540: Value = ASIC_ID_REG; break;
+        case 0x05000544: Value = ASIC_TEST_REG; break;
+        case 0x05000548: Value = ASIC_TEST_PIN_SEL; break;
+        default:
+            Value = (Address << 16) | (Address & 0xFFFF);
+            if (HaveDebugger())
+            {
+                g_Notify->BreakPoint(__FILE__, __LINE__);
+            }
+        }
+    }
+    else
+    {
+        Value = (Address << 16) | (Address & 0xFFFF);
+    }
+    return true;
+}
+
+bool CartridgeDomain2Address1Handler::Write32(uint32_t Address, uint32_t Value, uint32_t Mask)
+{
+    if (EnableDisk())
+    {
+        switch (Address & 0xFFFFFFF)
+        {
+        case 0x05000500: ASIC_DATA = (ASIC_DATA & ~Mask) | (Value & Mask); break;
+        case 0x05000508:
+            ASIC_CMD = (ASIC_CMD & ~Mask) | (Value & Mask);
+            DiskCommand();
+            break;
+        case 0x05000510:
+            //ASIC_BM_STATUS_CTL
+            ASIC_BM_CTL = (ASIC_BM_CTL & ~Mask) | (Value & Mask);
+            DiskBMControl();
+            break;
+        case 0x05000518:
+            //ASIC_SEQ_STATUS_CTL
+            break;
+        case 0x05000520: DiskReset(); break;
+        case 0x05000528: ASIC_HOST_SECBYTE = (ASIC_HOST_SECBYTE & ~Mask) | (Value & Mask); break;
+        case 0x05000530: ASIC_SEC_BYTE = (ASIC_SEC_BYTE & ~Mask) | (Value & Mask); break;
+        case 0x05000548: ASIC_TEST_PIN_SEL = (ASIC_TEST_PIN_SEL & ~Mask) | (Value & Mask); break;
+        default:
+            if (HaveDebugger())
+            {
+                g_Notify->BreakPoint(__FILE__, __LINE__);
+            }
+        }
+    }
+    return true;
+}
diff --git a/Source/Project64-core/N64System/MemoryHandler/CartridgeDomain2Address1Handler.h b/Source/Project64-core/N64System/MemoryHandler/CartridgeDomain2Address1Handler.h
new file mode 100644
index 000000000..6d2fa1a80
--- /dev/null
+++ b/Source/Project64-core/N64System/MemoryHandler/CartridgeDomain2Address1Handler.h
@@ -0,0 +1,87 @@
+#pragma once
+#include "MemoryHandler.h"
+#include <Project64-core\Settings\DebugSettings.h>
+#include <Project64-core\Settings\GameSettings.h>
+
+enum
+{
+    DD_STATUS_DATA_RQ = 0x40000000,
+    DD_STATUS_C2_XFER = 0x10000000,
+    DD_STATUS_BM_ERR = 0x08000000,
+    DD_STATUS_BM_INT = 0x04000000,
+    DD_STATUS_MECHA_INT = 0x02000000,
+    DD_STATUS_DISK_PRES = 0x01000000,
+    DD_STATUS_BUSY_STATE = 0x00800000,
+    DD_STATUS_RST_STATE = 0x00400000,
+    DD_STATUS_MTR_N_SPIN = 0x00100000,
+    DD_STATUS_HEAD_RTRCT = 0x00080000,
+    DD_STATUS_WR_PR_ERR = 0x00040000,
+    DD_STATUS_MECHA_ERR = 0x00020000,
+    DD_STATUS_DISK_CHNG = 0x00010000,
+
+    DD_BM_STATUS_RUNNING = 0x80000000,
+    DD_BM_STATUS_ERROR = 0x04000000,
+    DD_BM_STATUS_MICRO = 0x02000000,
+    DD_BM_STATUS_BLOCK = 0x01000000,
+
+    DD_BM_CTL_START = 0x80000000,
+    DD_BM_CTL_MNGRMODE = 0x40000000,
+    DD_BM_CTL_INTMASK = 0x20000000,
+    DD_BM_CTL_RESET = 0x10000000,
+    DD_BM_CTL_BLK_TRANS = 0x02000000,
+    DD_BM_CTL_MECHA_RST = 0x01000000
+};
+
+class DiskInterfaceReg
+{
+protected:
+    DiskInterfaceReg(uint32_t * DiskInterface);
+
+public:
+    uint32_t & ASIC_DATA;
+    uint32_t & ASIC_MISC_REG;
+    uint32_t & ASIC_STATUS;
+    uint32_t & ASIC_CMD;
+    uint32_t & ASIC_CUR_TK;
+    uint32_t & ASIC_BM_STATUS;
+    uint32_t & ASIC_BM_CTL;
+    uint32_t & ASIC_ERR_SECTOR;
+    uint32_t & ASIC_SEQ_STATUS;
+    uint32_t & ASIC_SEQ_CTL;
+    uint32_t & ASIC_CUR_SECTOR;
+    uint32_t & ASIC_HARD_RESET;
+    uint32_t & ASIC_C1_S0;
+    uint32_t & ASIC_HOST_SECBYTE;
+    uint32_t & ASIC_C1_S2;
+    uint32_t & ASIC_SEC_BYTE;
+    uint32_t & ASIC_C1_S4;
+    uint32_t & ASIC_C1_S6;
+    uint32_t & ASIC_CUR_ADDR;
+    uint32_t & ASIC_ID_REG;
+    uint32_t & ASIC_TEST_REG;
+    uint32_t & ASIC_TEST_PIN_SEL;
+
+private:
+    DiskInterfaceReg();
+    DiskInterfaceReg(const DiskInterfaceReg&);
+    DiskInterfaceReg& operator=(const DiskInterfaceReg&);
+};
+
+class CRegisters;
+
+class CartridgeDomain2Address1Handler :
+    public MemoryHandler,
+    private DiskInterfaceReg,
+    private CDebugSettings,
+    private CGameSettings
+{
+public:
+    CartridgeDomain2Address1Handler(CRegisters & Reg);
+    bool Read32(uint32_t Address, uint32_t & Value);
+    bool Write32(uint32_t Address, uint32_t Value, uint32_t Mask);
+
+private:
+    CartridgeDomain2Address1Handler();
+    CartridgeDomain2Address1Handler(const CartridgeDomain2Address1Handler &);
+    CartridgeDomain2Address1Handler & operator=(const CartridgeDomain2Address1Handler &);
+};
diff --git a/Source/Project64-core/N64System/Mips/MemoryVirtualMem.cpp b/Source/Project64-core/N64System/Mips/MemoryVirtualMem.cpp
index 988a3ba54..75a764395 100755
--- a/Source/Project64-core/N64System/Mips/MemoryVirtualMem.cpp
+++ b/Source/Project64-core/N64System/Mips/MemoryVirtualMem.cpp
@@ -28,6 +28,7 @@ CMipsMemoryVM::CMipsMemoryVM(CN64System & System, bool SavesReadOnly) :
     CDMA(*this, *this),
     m_Reg(System.m_Reg),
     m_AudioInterfaceHandler(System, System.m_Reg),
+    m_CartridgeDomain2Address1Handler(System.m_Reg),
     m_RDRAMRegistersHandler(System.m_Reg),
     m_RomMapped(false),
     m_DPCommandRegistersHandler(System, System.GetPlugins(), System.m_Reg),
@@ -651,7 +652,7 @@ bool CMipsMemoryVM::LW_NonMemory(uint32_t PAddr, uint32_t* Value)
         case 0x04600000: m_PeripheralInterfaceHandler.Read32(PAddr, m_MemLookupValue.UW[0]); break;
         case 0x04700000: m_RDRAMInterfaceHandler.Read32(PAddr, m_MemLookupValue.UW[0]); break;
         case 0x04800000: m_SerialInterfaceHandler.Read32(PAddr, m_MemLookupValue.UW[0]); break;
-        case 0x05000000: Load32CartridgeDomain2Address1(); break;
+        case 0x05000000: m_CartridgeDomain2Address1Handler.Read32(PAddr, m_MemLookupValue.UW[0]); break;
         case 0x06000000: Load32CartridgeDomain1Address1(); break;
         case 0x08000000: Load32CartridgeDomain2Address2(); break;
         case 0x1FC00000: Load32PifRam(); break;
@@ -771,7 +772,7 @@ bool CMipsMemoryVM::SW_NonMemory(uint32_t PAddr, uint32_t Value)
     case 0x04600000: m_PeripheralInterfaceHandler.Write32(PAddr, Value, 0xFFFFFFFF); break;
     case 0x04700000: m_RDRAMInterfaceHandler.Write32(PAddr, Value, 0xFFFFFFFF); break;
     case 0x04800000: m_SerialInterfaceHandler.Write32(PAddr, Value, 0xFFFFFFFF); break;
-    case 0x05000000: Write32CartridgeDomain2Address1(); break;
+    case 0x05000000: m_CartridgeDomain2Address1Handler.Write32(PAddr, Value, 0xFFFFFFFF); break;
     case 0x08000000: Write32CartridgeDomain2Address2(); break;
     case 0x1FC00000: Write32PifRam(); break;
     default:
@@ -1107,51 +1108,6 @@ void CMipsMemoryVM::Load32CartridgeDomain1Address3(void)
     m_MemLookupValue.UW[0] = (m_MemLookupValue.UW[0] << 16) | m_MemLookupValue.UW[0];
 }
 
-void CMipsMemoryVM::Load32CartridgeDomain2Address1(void)
-{
-    // 64DD registers
-    if (EnableDisk())
-    {
-        switch (m_MemLookupAddress & 0x1FFFFFFF)
-        {
-        case 0x05000500: m_MemLookupValue.UW[0] = g_Reg->ASIC_DATA; break;
-        case 0x05000504: m_MemLookupValue.UW[0] = g_Reg->ASIC_MISC_REG; break;
-        case 0x05000508:
-            m_MemLookupValue.UW[0] = g_Reg->ASIC_STATUS;
-            DiskGapSectorCheck();
-            break;
-        case 0x0500050C: m_MemLookupValue.UW[0] = g_Reg->ASIC_CUR_TK; break;
-        case 0x05000510: m_MemLookupValue.UW[0] = g_Reg->ASIC_BM_STATUS; break;
-        case 0x05000514: m_MemLookupValue.UW[0] = g_Reg->ASIC_ERR_SECTOR; break;
-        case 0x05000518: m_MemLookupValue.UW[0] = g_Reg->ASIC_SEQ_STATUS; break;
-        case 0x0500051C: m_MemLookupValue.UW[0] = g_Reg->ASIC_CUR_SECTOR; break;
-        case 0x05000520: m_MemLookupValue.UW[0] = g_Reg->ASIC_HARD_RESET; break;
-        case 0x05000524: m_MemLookupValue.UW[0] = g_Reg->ASIC_C1_S0; break;
-        case 0x05000528: m_MemLookupValue.UW[0] = g_Reg->ASIC_HOST_SECBYTE; break;
-        case 0x0500052C: m_MemLookupValue.UW[0] = g_Reg->ASIC_C1_S2; break;
-        case 0x05000530: m_MemLookupValue.UW[0] = g_Reg->ASIC_SEC_BYTE; break;
-        case 0x05000534: m_MemLookupValue.UW[0] = g_Reg->ASIC_C1_S4; break;
-        case 0x05000538: m_MemLookupValue.UW[0] = g_Reg->ASIC_C1_S6; break;
-        case 0x0500053C: m_MemLookupValue.UW[0] = g_Reg->ASIC_CUR_ADDR; break;
-        case 0x05000540: m_MemLookupValue.UW[0] = g_Reg->ASIC_ID_REG; break;
-        case 0x05000544: m_MemLookupValue.UW[0] = g_Reg->ASIC_TEST_REG; break;
-        case 0x05000548: m_MemLookupValue.UW[0] = g_Reg->ASIC_TEST_PIN_SEL; break;
-        default:
-            m_MemLookupValue.UW[0] = m_MemLookupAddress & 0xFFFF;
-            m_MemLookupValue.UW[0] = (m_MemLookupValue.UW[0] << 16) | m_MemLookupValue.UW[0];
-            if (HaveDebugger())
-            {
-                g_Notify->BreakPoint(__FILE__, __LINE__);
-            }
-        }
-    }
-    else
-    {
-        m_MemLookupValue.UW[0] = m_MemLookupAddress & 0xFFFF;
-        m_MemLookupValue.UW[0] = (m_MemLookupValue.UW[0] << 16) | m_MemLookupValue.UW[0];
-    }
-}
-
 void CMipsMemoryVM::Load32CartridgeDomain2Address2(void)
 {
     uint32_t offset = (m_MemLookupAddress & 0x1FFFFFFF) - 0x08000000;
@@ -1232,39 +1188,6 @@ void CMipsMemoryVM::Load32Rom(void)
     }
 }
 
-void CMipsMemoryVM::Write32CartridgeDomain2Address1(void)
-{
-    // 64DD registers
-    if (EnableDisk())
-    {
-        switch (m_MemLookupAddress & 0xFFFFFFF)
-        {
-        case 0x05000500: g_Reg->ASIC_DATA = m_MemLookupValue.UW[0]; break;
-        case 0x05000508:
-            g_Reg->ASIC_CMD = m_MemLookupValue.UW[0];
-            DiskCommand();
-            break;
-        case 0x05000510:
-            //ASIC_BM_STATUS_CTL
-            g_Reg->ASIC_BM_CTL = m_MemLookupValue.UW[0];
-            DiskBMControl();
-            break;
-        case 0x05000518:
-            //ASIC_SEQ_STATUS_CTL
-            break;
-        case 0x05000520: DiskReset(); break;
-        case 0x05000528: g_Reg->ASIC_HOST_SECBYTE = m_MemLookupValue.UW[0]; break;
-        case 0x05000530: g_Reg->ASIC_SEC_BYTE = m_MemLookupValue.UW[0]; break;
-        case 0x05000548: g_Reg->ASIC_TEST_PIN_SEL = m_MemLookupValue.UW[0]; break;
-        default:
-            if (HaveDebugger())
-            {
-                g_Notify->BreakPoint(__FILE__, __LINE__);
-            }
-        }
-    }
-}
-
 void CMipsMemoryVM::Write32CartridgeDomain2Address2(void)
 {
     uint32_t offset = (m_MemLookupAddress & 0x1FFFFFFF) - 0x08000000;
diff --git a/Source/Project64-core/N64System/Mips/MemoryVirtualMem.h b/Source/Project64-core/N64System/Mips/MemoryVirtualMem.h
index 1bd2c2872..a9646c92d 100644
--- a/Source/Project64-core/N64System/Mips/MemoryVirtualMem.h
+++ b/Source/Project64-core/N64System/Mips/MemoryVirtualMem.h
@@ -7,6 +7,7 @@
 #include <Project64-core\N64System\Mips\FlashRam.h>
 #include <Project64-core\N64System\Mips\Sram.h>
 #include <Project64-core\N64System\Mips\Dma.h>
+#include <Project64-core\N64System\MemoryHandler\CartridgeDomain2Address1Handler.h>
 #include <Project64-core\N64System\MemoryHandler\DisplayControlRegHandler.h>
 #include <Project64-core\N64System\MemoryHandler\MIPSInterfaceHandler.h>
 #include <Project64-core\N64System\MemoryHandler\PeripheralInterfaceHandler.h>
@@ -142,12 +143,10 @@ private:
 
     static void Load32CartridgeDomain1Address1(void);
     static void Load32CartridgeDomain1Address3(void);
-    static void Load32CartridgeDomain2Address1(void);
     static void Load32CartridgeDomain2Address2(void);
     static void Load32PifRam(void);
     static void Load32Rom(void);
 
-    static void Write32CartridgeDomain2Address1(void);
     static void Write32CartridgeDomain2Address2(void);
     static void Write32PifRam(void);
 
@@ -177,6 +176,7 @@ private:
     static uint8_t   * m_Reserve1, *m_Reserve2;
     CRegisters & m_Reg;
     AudioInterfaceHandler m_AudioInterfaceHandler;
+    CartridgeDomain2Address1Handler m_CartridgeDomain2Address1Handler;
     DisplayControlRegHandler m_DPCommandRegistersHandler;
     MIPSInterfaceHandler m_MIPSInterfaceHandler;
     PeripheralInterfaceHandler m_PeripheralInterfaceHandler;
diff --git a/Source/Project64-core/N64System/Mips/Register.cpp b/Source/Project64-core/N64System/Mips/Register.cpp
index dd01a50f4..ac1cc4a2d 100644
--- a/Source/Project64-core/N64System/Mips/Register.cpp
+++ b/Source/Project64-core/N64System/Mips/Register.cpp
@@ -87,32 +87,6 @@ DisplayControlReg::DisplayControlReg(uint32_t * _DisplayProcessor) :
 {
 }
 
-Disk_InterfaceReg::Disk_InterfaceReg(uint32_t * DiskInterface) :
-    ASIC_DATA(DiskInterface[0]),
-    ASIC_MISC_REG(DiskInterface[1]),
-    ASIC_STATUS(DiskInterface[2]),
-    ASIC_CUR_TK(DiskInterface[3]),
-    ASIC_BM_STATUS(DiskInterface[4]),
-    ASIC_ERR_SECTOR(DiskInterface[5]),
-    ASIC_SEQ_STATUS(DiskInterface[6]),
-    ASIC_CUR_SECTOR(DiskInterface[7]),
-    ASIC_HARD_RESET(DiskInterface[8]),
-    ASIC_C1_S0(DiskInterface[9]),
-    ASIC_HOST_SECBYTE(DiskInterface[10]),
-    ASIC_C1_S2(DiskInterface[11]),
-    ASIC_SEC_BYTE(DiskInterface[12]),
-    ASIC_C1_S4(DiskInterface[13]),
-    ASIC_C1_S6(DiskInterface[14]),
-    ASIC_CUR_ADDR(DiskInterface[15]),
-    ASIC_ID_REG(DiskInterface[16]),
-    ASIC_TEST_REG(DiskInterface[17]),
-    ASIC_TEST_PIN_SEL(DiskInterface[18]),
-    ASIC_CMD(DiskInterface[19]),
-    ASIC_BM_CTL(DiskInterface[20]),
-    ASIC_SEQ_CTL(DiskInterface[21])
-{
-}
-
 CRegisters::CRegisters(CN64System * System, CSystemEvents * SystemEvents) :
     CP0registers(m_CP0),
     RDRAMRegistersReg(m_RDRAM_Registers),
@@ -124,7 +98,7 @@ CRegisters::CRegisters(CN64System * System, CSystemEvents * SystemEvents) :
     SPRegistersReg(m_SigProcessor_Interface),
     DisplayControlReg(m_Display_ControlReg),
     SerialInterfaceReg(m_SerialInterface),
-    Disk_InterfaceReg(m_DiskInterface),
+    DiskInterfaceReg(m_DiskInterface),
     m_System(System),
     m_SystemEvents(SystemEvents)
 {
diff --git a/Source/Project64-core/N64System/Mips/Register.h b/Source/Project64-core/N64System/Mips/Register.h
index 17c34dfed..12bc6111f 100644
--- a/Source/Project64-core/N64System/Mips/Register.h
+++ b/Source/Project64-core/N64System/Mips/Register.h
@@ -3,6 +3,7 @@
 #include <Common/Platform.h>
 #include <Project64-core\N64System\N64Types.h>
 #include <Project64-core\N64System\MemoryHandler\AudioInterfaceHandler.h>
+#include <Project64-core\N64System\MemoryHandler\CartridgeDomain2Address1Handler.h>
 #include <Project64-core\N64System\MemoryHandler\DisplayControlRegHandler.h>
 #include <Project64-core\N64System\MemoryHandler\MIPSInterfaceHandler.h>
 #include <Project64-core\N64System\MemoryHandler\PeripheralInterfaceHandler.h>
@@ -222,72 +223,6 @@ enum
     PI_CLR_INTR = 0x02,
 };
 
-// Disk interface
-class Disk_InterfaceReg
-{
-protected:
-    Disk_InterfaceReg (uint32_t * Disk_Interface);
-
-public:
-    uint32_t & ASIC_DATA;
-    uint32_t & ASIC_MISC_REG;
-    uint32_t & ASIC_STATUS;
-    uint32_t & ASIC_CMD;
-    uint32_t & ASIC_CUR_TK;
-    uint32_t & ASIC_BM_STATUS;
-    uint32_t & ASIC_BM_CTL;
-    uint32_t & ASIC_ERR_SECTOR;
-    uint32_t & ASIC_SEQ_STATUS;
-    uint32_t & ASIC_SEQ_CTL;
-    uint32_t & ASIC_CUR_SECTOR;
-    uint32_t & ASIC_HARD_RESET;
-    uint32_t & ASIC_C1_S0;
-    uint32_t & ASIC_HOST_SECBYTE;
-    uint32_t & ASIC_C1_S2;
-    uint32_t & ASIC_SEC_BYTE;
-    uint32_t & ASIC_C1_S4;
-    uint32_t & ASIC_C1_S6;
-    uint32_t & ASIC_CUR_ADDR;
-    uint32_t & ASIC_ID_REG;
-    uint32_t & ASIC_TEST_REG;
-    uint32_t & ASIC_TEST_PIN_SEL;
-
-private:
-    Disk_InterfaceReg();
-    Disk_InterfaceReg(const Disk_InterfaceReg&);
-    Disk_InterfaceReg& operator=(const Disk_InterfaceReg&);
-};
-
-// Disk interface flags
-enum
-{
-    DD_STATUS_DATA_RQ = 0x40000000,
-    DD_STATUS_C2_XFER = 0x10000000,
-    DD_STATUS_BM_ERR = 0x08000000,
-    DD_STATUS_BM_INT = 0x04000000,
-    DD_STATUS_MECHA_INT = 0x02000000,
-    DD_STATUS_DISK_PRES = 0x01000000,
-    DD_STATUS_BUSY_STATE = 0x00800000,
-    DD_STATUS_RST_STATE = 0x00400000,
-    DD_STATUS_MTR_N_SPIN = 0x00100000,
-    DD_STATUS_HEAD_RTRCT = 0x00080000,
-    DD_STATUS_WR_PR_ERR = 0x00040000,
-    DD_STATUS_MECHA_ERR = 0x00020000,
-    DD_STATUS_DISK_CHNG = 0x00010000,
-
-    DD_BM_STATUS_RUNNING = 0x80000000,
-    DD_BM_STATUS_ERROR = 0x04000000,
-    DD_BM_STATUS_MICRO = 0x02000000,
-    DD_BM_STATUS_BLOCK = 0x01000000,
-
-    DD_BM_CTL_START = 0x80000000,
-    DD_BM_CTL_MNGRMODE = 0x40000000,
-    DD_BM_CTL_INTMASK = 0x20000000,
-    DD_BM_CTL_RESET = 0x10000000,
-    DD_BM_CTL_BLK_TRANS = 0x02000000,
-    DD_BM_CTL_MECHA_RST = 0x01000000
-};
-
 class CRegName
 {
 public:
@@ -333,7 +268,7 @@ class CRegisters :
     public SPRegistersReg,
     public DisplayControlReg,
     public SerialInterfaceReg,
-    public Disk_InterfaceReg
+    public DiskInterfaceReg
 {
 public:
     CRegisters(CN64System * System, CSystemEvents * SystemEvents);
@@ -386,7 +321,7 @@ private:
     CRegisters(const CRegisters&);
     CRegisters& operator=(const CRegisters&);
 
-    bool            m_FirstInterupt;
-    CN64System    * m_System;
+    bool m_FirstInterupt;
+    CN64System * m_System;
     CSystemEvents * m_SystemEvents;
 };
diff --git a/Source/Project64-core/Project64-core.vcxproj b/Source/Project64-core/Project64-core.vcxproj
index 1908be0ab..d92508eaa 100644
--- a/Source/Project64-core/Project64-core.vcxproj
+++ b/Source/Project64-core/Project64-core.vcxproj
@@ -54,6 +54,7 @@
     <ClCompile Include="N64System\Interpreter\InterpreterOps.cpp" />
     <ClCompile Include="N64System\Interpreter\InterpreterOps32.cpp" />
     <ClCompile Include="N64System\MemoryHandler\AudioInterfaceHandler.cpp" />
+    <ClCompile Include="N64System\MemoryHandler\CartridgeDomain2Address1Handler.cpp" />
     <ClCompile Include="N64System\MemoryHandler\DisplayControlRegHandler.cpp" />
     <ClCompile Include="N64System\MemoryHandler\MIPSInterfaceHandler.cpp" />
     <ClCompile Include="N64System\MemoryHandler\PeripheralInterfaceHandler.cpp" />
@@ -157,6 +158,7 @@
     <ClInclude Include="N64System\Interpreter\InterpreterOps32.h" />
     <ClInclude Include="N64System\Interpreter\InterpreterOps.h" />
     <ClInclude Include="N64System\MemoryHandler\AudioInterfaceHandler.h" />
+    <ClInclude Include="N64System\MemoryHandler\CartridgeDomain2Address1Handler.h" />
     <ClInclude Include="N64System\MemoryHandler\DisplayControlRegHandler.h" />
     <ClInclude Include="N64System\MemoryHandler\MemoryHandler.h" />
     <ClInclude Include="N64System\MemoryHandler\MIPSInterfaceHandler.h" />
diff --git a/Source/Project64-core/Project64-core.vcxproj.filters b/Source/Project64-core/Project64-core.vcxproj.filters
index b944060ac..ee3919ee1 100644
--- a/Source/Project64-core/Project64-core.vcxproj.filters
+++ b/Source/Project64-core/Project64-core.vcxproj.filters
@@ -381,6 +381,9 @@
     <ClCompile Include="N64System\MemoryHandler\SerialInterfaceHandler.cpp">
       <Filter>Source Files\N64 System\MemoryHandler</Filter>
     </ClCompile>
+    <ClCompile Include="N64System\MemoryHandler\CartridgeDomain2Address1Handler.cpp">
+      <Filter>Source Files\N64 System\MemoryHandler</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="stdafx.h">
@@ -728,6 +731,9 @@
     <ClInclude Include="N64System\MemoryHandler\SerialInterfaceHandler.h">
       <Filter>Header Files\N64 System\MemoryHandler</Filter>
     </ClInclude>
+    <ClInclude Include="N64System\MemoryHandler\CartridgeDomain2Address1Handler.h">
+      <Filter>Header Files\N64 System\MemoryHandler</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="Version.h.in">