diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/CamericaGoldenFive.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/CamericaGoldenFive.cs
index 9d7693473e..4404117e2c 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/CamericaGoldenFive.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/CamericaGoldenFive.cs
@@ -26,6 +26,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			regs.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Cony.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Cony.cs
index 621068c2ff..b1ac0da1c2 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Cony.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Cony.cs
@@ -40,6 +40,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 		}
 
+		public override void Dispose()
+		{
+			prg_regs.Dispose();
+			low.Dispose();
+			chr_regs.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_17.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_17.cs
index 725980d3d1..e3ccbe97ca 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_17.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_17.cs
@@ -59,6 +59,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		public override void Dispose()
 		{
 			prg_banks_16k.Dispose();
+			chr_banks_8k.Dispose();
 			base.Dispose();
 		}
 
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_19.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_19.cs
index ac75860c43..143525ba20 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_19.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/JALECO_JF_19.cs
@@ -56,6 +56,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 		public override void Dispose()
 		{
 			prg_banks_16k.Dispose();
+			chr_banks_8k.Dispose();
 			base.Dispose();
 		}
 
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper121.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper121.cs
index c0b23fd82d..eabd01323f 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper121.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper121.cs
@@ -23,6 +23,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			exRegs.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper123.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper123.cs
index 21a255b551..4b6b35f13d 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper123.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper123.cs
@@ -24,6 +24,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			EXPREGS.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper187.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper187.cs
index cb2da9c60e..f150e98789 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper187.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper187.cs
@@ -23,6 +23,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			exRegs.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper199.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper199.cs
index e347098559..ab619862db 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper199.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper199.cs
@@ -1,37 +1,43 @@
-using BizHawk.Common;
-
-namespace BizHawk.Emulation.Cores.Nintendo.NES
-{
-	public sealed class Mapper199 : MMC3Board_Base
-	{
-		private ByteBuffer exRegs = new ByteBuffer(4);
-
-		public override bool Configure(NES.EDetectionOrigin origin)
-		{
-			switch (Cart.board_type)
-			{
-				case "MAPPER199":
-					break;
-				default:
-					return false;
-			}
-
-			exRegs[0] = (byte)(Cart.prg_size / 8 - 2);
-			exRegs[1] = (byte)(Cart.prg_size / 8 - 1);
-			exRegs[2] = 1;
-			exRegs[3] = 3;
-
-			BaseSetup();
-			mmc3.MirrorMask = 3;
-			return true;
-		}
-
-		public override void SyncState(Serializer ser)
-		{
-			base.SyncState(ser);
-			ser.Sync("exRegs", ref exRegs);
+using BizHawk.Common;
+
+namespace BizHawk.Emulation.Cores.Nintendo.NES
+{
+	public sealed class Mapper199 : MMC3Board_Base
+	{
+		private ByteBuffer exRegs = new ByteBuffer(4);
+
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "MAPPER199":
+					break;
+				default:
+					return false;
+			}
+
+			exRegs[0] = (byte)(Cart.prg_size / 8 - 2);
+			exRegs[1] = (byte)(Cart.prg_size / 8 - 1);
+			exRegs[2] = 1;
+			exRegs[3] = 3;
+
+			BaseSetup();
+			mmc3.MirrorMask = 3;
+			return true;
 		}
-
+
+		public override void Dispose()
+		{
+			exRegs.Dispose();
+			base.Dispose();
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("exRegs", ref exRegs);
+		}
+
 		public override byte ReadPPU(int addr)
 		{
 			if (addr < 0x2000)
@@ -167,28 +173,28 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				base.WritePPU(addr, value);
 		}
 
-		protected override int Get_PRGBank_8K(int addr)
-		{
-			if (addr >= 0x4000 && addr < 0x6000)
-			{
-				return exRegs[0];
-			}
-			else if (addr >= 0x6000)
-			{
-				return exRegs[1];
-			}
-
-			return base.Get_PRGBank_8K(addr);
-		}
-
-		public override void WritePRG(int addr, byte value)
-		{
-			if ((addr == 1) && ((mmc3.cmd & 0x8) > 0))
-			{
-				exRegs[mmc3.cmd & 3] = value;
-			}
-			else 
-				base.WritePRG(addr, value);
-		}
-	}
-}
+		protected override int Get_PRGBank_8K(int addr)
+		{
+			if (addr >= 0x4000 && addr < 0x6000)
+			{
+				return exRegs[0];
+			}
+			else if (addr >= 0x6000)
+			{
+				return exRegs[1];
+			}
+
+			return base.Get_PRGBank_8K(addr);
+		}
+
+		public override void WritePRG(int addr, byte value)
+		{
+			if ((addr == 1) && ((mmc3.cmd & 0x8) > 0))
+			{
+				exRegs[mmc3.cmd & 3] = value;
+			}
+			else 
+				base.WritePRG(addr, value);
+		}
+	}
+}
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper208.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper208.cs
index 11a3fdbbd4..ff8961091e 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper208.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper208.cs
@@ -39,6 +39,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			exRegs.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper215.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper215.cs
index 83bdafa7fd..3496146d08 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper215.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper215.cs
@@ -74,6 +74,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			exRegs.Dispose();
+			prg_regs_8k.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper217.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper217.cs
index e142867282..ed2a41300f 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper217.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper217.cs
@@ -1,34 +1,34 @@
-using BizHawk.Common;
-using BizHawk.Common.NumberExtensions;
-
-namespace BizHawk.Emulation.Cores.Nintendo.NES
-{
-	public sealed class Mapper217 : MMC3Board_Base
-	{
-		private ByteBuffer exRegs = new ByteBuffer(4);
-
+using BizHawk.Common;
+using BizHawk.Common.NumberExtensions;
+
+namespace BizHawk.Emulation.Cores.Nintendo.NES
+{
+	public sealed class Mapper217 : MMC3Board_Base
+	{
+		private ByteBuffer exRegs = new ByteBuffer(4);
+
 		public ByteBuffer prg_regs_8k = new ByteBuffer(4);
 		private int prg_mask_8k, chr_mask_1k;
 		private byte[] regs_sec = { 0, 6, 3, 7, 5, 2, 4, 1 };
 
 
-		public override bool Configure(NES.EDetectionOrigin origin)
-		{
-			switch (Cart.board_type)
-			{
-				case "MAPPER217":
-					break;
-				default:
-					return false;
-			}
-
-			BaseSetup();
-
-			exRegs[0] = 0x00;
-			exRegs[1] = 0xFF;
-			exRegs[2] = 0x03;
-			exRegs[3] = 0x00;
-
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "MAPPER217":
+					break;
+				default:
+					return false;
+			}
+
+			BaseSetup();
+
+			exRegs[0] = 0x00;
+			exRegs[1] = 0xFF;
+			exRegs[2] = 0x03;
+			exRegs[3] = 0x00;
+
 			prg_mask_8k = Cart.prg_size / 8 - 1;
 			chr_mask_1k = Cart.chr_size - 1;
 
@@ -36,19 +36,26 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			prg_regs_8k[1] = 1;
 			prg_regs_8k[2] = (byte)(0xFE & prg_mask_8k);
 			prg_regs_8k[3] = (byte)(0xFF & prg_mask_8k);
-
-			return true;
-		}
-
-		public override void SyncState(Serializer ser)
-		{
-			base.SyncState(ser);
-			ser.Sync("exRegs", ref exRegs);
-			ser.Sync("ptg_regs_8k", ref prg_regs_8k);
+
+			return true;
+		}
+
+		public override void Dispose()
+		{
+			exRegs.Dispose();
+			prg_regs_8k.Dispose();
+			base.Dispose();
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("exRegs", ref exRegs);
+			ser.Sync("ptg_regs_8k", ref prg_regs_8k);
 			ser.Sync("prg_mask", ref prg_mask_8k);
-			ser.Sync("chr_mask", ref chr_mask_1k);
-		}
-
+			ser.Sync("chr_mask", ref chr_mask_1k);
+		}
+
 		public void sync_prg()
 		{
 			int temp = 0;
@@ -64,13 +71,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				temp |= (exRegs[1] << 5 & 0x60);
 			prg_regs_8k[i] = (byte)(temp & prg_mask_8k);
 			}
-		}
-
-		public override void WriteEXP(int addr, byte value)
-		{
-			if (addr == 0x1000)
-			{
-				exRegs[0] = value;
+		}
+
+		public override void WriteEXP(int addr, byte value)
+		{
+			if (addr == 0x1000)
+			{
+				exRegs[0] = value;
 				if ((value & 0x80)>0)
 				{
 					int bank = (byte)((value & 0x0F) | (exRegs[1] << 4 & 0x30));
@@ -86,23 +93,23 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				else
 				{
 					sync_prg();
-				}
-			}
-
-			else if (addr == 0x1001)
-			{
-				exRegs[1] = value;
-				sync_prg();
-			}
-
-			else if (addr == 0x1007)
-			{
-				exRegs[2] = value;
-			}
-
-			base.WriteEXP(addr, value);
-		}
-
+				}
+			}
+
+			else if (addr == 0x1001)
+			{
+				exRegs[1] = value;
+				sync_prg();
+			}
+
+			else if (addr == 0x1007)
+			{
+				exRegs[2] = value;
+			}
+
+			base.WriteEXP(addr, value);
+		}
+
 		public override void WritePRG(int addr, byte value)
 		{
 			switch ((addr + 0x8000) & 0xE001)
@@ -175,8 +182,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 			if (addr>=0x4000) 
 				base.WritePRG(addr, value);
-		}
-
+		}
+
 		public override byte ReadPPU(int addr)
 		{
 			if (addr < 0x2000)
@@ -192,14 +199,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				return VROM[addr];
 			}
 			else return base.ReadPPU(addr);
-		}
-
-
+		}
+
+
 		public override byte ReadPRG(int addr)
 		{
 			int bank = addr >> 13;
 			bank = prg_regs_8k[bank];
 			return ROM[(bank << 13) + (addr & 0x1FFF)];
-		}
-	}
-}
+		}
+	}
+}
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper254.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper254.cs
index bcd6112fd4..d2baf71db5 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper254.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper254.cs
@@ -21,6 +21,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			regs.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Pocahontas.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Pocahontas.cs
index 22c028b0d4..e8642c2aec 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Pocahontas.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Pocahontas.cs
@@ -40,6 +40,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			exRegs.Dispose();
+			prg_regs_8k.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper015.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper015.cs
index 389a6d243e..71704b5f9c 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper015.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper015.cs
@@ -32,6 +32,11 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			prg_banks_8k.Dispose();
+			base.Dispose();
+		}
 
 		public override byte ReadPRG(int addr)
 		{
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper132.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper132.cs
index 6c0444a40f..05e81b9d21 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper132.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper132.cs
@@ -39,6 +39,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			reg.Dispose();
+			base.Dispose();
+		}
+
 		public void sync(byte value)
 		{
 			prg=reg[2]>>2;
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper142.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper142.cs
index 794d4366b6..c976c8ab30 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper142.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper142.cs
@@ -28,6 +28,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			reg.Dispose();
+			base.Dispose();
+		}
+
 		public override byte ReadWRAM(int addr)
 		{
 			return ROM[(reg[4] << 13) + (addr & 0x1FFF)];		
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper150.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper150.cs
index 31b6d8f4e3..99b153d352 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper150.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper150.cs
@@ -27,6 +27,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			latch.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper176.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper176.cs
index dc8789dba3..7427ae7c47 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper176.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper176.cs
@@ -46,6 +46,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			prg_banks_8k.Dispose();
+			chr_banks_8k.Dispose();
+			base.Dispose();
+		}
+
 		static readonly EMirrorType[] kMirrorTypes = {EMirrorType.Vertical,EMirrorType.Horizontal,EMirrorType.OneScreenA,EMirrorType.OneScreenB};
 		void SyncMirror()
 		{
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper178.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper178.cs
index 59226d1422..c3f1610282 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper178.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper178.cs
@@ -31,6 +31,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			prg_banks_32k.Dispose();
+			base.Dispose();
+		}
+
 		public override void WriteEXP(int addr, byte value)
 		{
 			switch (addr)
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper183.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper183.cs
index 8820a28f1e..acdbb7b7df 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper183.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper183.cs
@@ -1,57 +1,64 @@
-using BizHawk.Common;
+using BizHawk.Common;
 using BizHawk.Common.NumberExtensions;
 using System;
 
-namespace BizHawk.Emulation.Cores.Nintendo.NES
-{
-	// Adpated from FCEUX src
-	public sealed class Mapper183 : NES.NESBoardBase
-	{
-		private ByteBuffer prg = new ByteBuffer(4);
-		private ByteBuffer chr = new ByteBuffer(8);
-
+namespace BizHawk.Emulation.Cores.Nintendo.NES
+{
+	// Adpated from FCEUX src
+	public sealed class Mapper183 : NES.NESBoardBase
+	{
+		private ByteBuffer prg = new ByteBuffer(4);
+		private ByteBuffer chr = new ByteBuffer(8);
+
 		private int IRQLatch = 0;
 		private int IRQCount = 0;
 		private bool IRQMode;
-		private bool IRQa = false;
-		private bool IRQr = false;
-
-		private int prg_bank_mask_8k, chr_bank_mask_1k, IRQPre=341;
-
-		public override bool Configure(NES.EDetectionOrigin origin)
-		{
-			switch (Cart.board_type)
-			{
-				case "MAPPER183":
-					break;
-				default:
-					return false;
-			}
-
-			prg_bank_mask_8k = Cart.prg_size / 8 - 1;
-			chr_bank_mask_1k = Cart.chr_size - 1;
-
-			return true;
-		}
-
-		public override void SyncState(Serializer ser)
-		{
-			base.SyncState(ser);
-			ser.Sync("prg", ref prg);
-			ser.Sync("chr", ref chr);
-		}
-
-		private void SetMirroring(int mirr)
-		{
-			switch (mirr & 3)
-			{
-				case 0: SetMirrorType(EMirrorType.Vertical); break;
-				case 1: SetMirrorType(EMirrorType.Horizontal); break;
-				case 2: SetMirrorType(EMirrorType.OneScreenA); break;
-				case 3: SetMirrorType(EMirrorType.OneScreenB); break;
-			}
-		}
-
+		private bool IRQa = false;
+		private bool IRQr = false;
+
+		private int prg_bank_mask_8k, chr_bank_mask_1k, IRQPre=341;
+
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "MAPPER183":
+					break;
+				default:
+					return false;
+			}
+
+			prg_bank_mask_8k = Cart.prg_size / 8 - 1;
+			chr_bank_mask_1k = Cart.chr_size - 1;
+
+			return true;
+		}
+
+		public override void Dispose()
+		{
+			prg.Dispose();
+			chr.Dispose();
+			base.Dispose();
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("prg", ref prg);
+			ser.Sync("chr", ref chr);
+		}
+
+		private void SetMirroring(int mirr)
+		{
+			switch (mirr & 3)
+			{
+				case 0: SetMirrorType(EMirrorType.Vertical); break;
+				case 1: SetMirrorType(EMirrorType.Horizontal); break;
+				case 2: SetMirrorType(EMirrorType.OneScreenA); break;
+				case 3: SetMirrorType(EMirrorType.OneScreenB); break;
+			}
+		}
+
 		public override void ClockCPU()
 		{
 			if (IRQa)
@@ -81,41 +88,41 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				}
 
 			}
-		}
-
-
-
-		public override void WriteWRAM(int addr, byte value)
-		{
-			WriteReg(addr + 0x6000, value);
-		}
-
-		public override void WritePRG(int addr, byte value)
-		{
-			WriteReg(addr + 0x8000, value);
-		}
-
-		private void WriteReg(int addr, byte value)
-		{
-			if ((addr & 0xF800) == 0x6800)
-			{
-				prg[3] = (byte)(addr & 0x3F);
-			}
-			else if (((addr & 0xF80C) >= 0xB000) && ((addr & 0xF80C) <= 0xE00C))
-			{
-				int index = (((addr >> 11) - 6) | (addr >> 3)) & 7;
-				chr[index] = (byte)((chr[index] & (0xF0 >> (addr & 4))) | ((value & 0x0F) << (addr & 4)));
-			}
-			else switch (addr & 0xF80C)
-				{
-					case 0x8800: prg[0] = value; break;
-					case 0xA800: prg[1] = value; break;
-					case 0xA000: prg[2] = value; break;
+		}
+
+
+
+		public override void WriteWRAM(int addr, byte value)
+		{
+			WriteReg(addr + 0x6000, value);
+		}
+
+		public override void WritePRG(int addr, byte value)
+		{
+			WriteReg(addr + 0x8000, value);
+		}
+
+		private void WriteReg(int addr, byte value)
+		{
+			if ((addr & 0xF800) == 0x6800)
+			{
+				prg[3] = (byte)(addr & 0x3F);
+			}
+			else if (((addr & 0xF80C) >= 0xB000) && ((addr & 0xF80C) <= 0xE00C))
+			{
+				int index = (((addr >> 11) - 6) | (addr >> 3)) & 7;
+				chr[index] = (byte)((chr[index] & (0xF0 >> (addr & 4))) | ((value & 0x0F) << (addr & 4)));
+			}
+			else switch (addr & 0xF80C)
+				{
+					case 0x8800: prg[0] = value; break;
+					case 0xA800: prg[1] = value; break;
+					case 0xA000: prg[2] = value; break;
 					case 0x9800: SetMirroring(value & 3); break;
 
 					// TODO: IRQ
 					case 0xF000: IRQLatch = ((IRQLatch & 0xF0) | (value & 0xF)); break;
-					case 0xF004: IRQLatch = ((IRQLatch & 0x0F) | ((value & 0xF) << 4)); break;
+					case 0xF004: IRQLatch = ((IRQLatch & 0x0F) | ((value & 0xF) << 4)); break;
 					case 0xF008:
 						IRQMode = value.Bit(2);
 						IRQa = value.Bit(1);//value>0 ? true:false;
@@ -126,54 +133,54 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 							IRQCount = IRQLatch;
 						}
 						IRQSignal = false;
-						break;
+						break;
 					case 0xF00C:
 						IRQSignal = false;
 						IRQa = IRQr;
 						break;
 
-				}
-		}
-
-		public override byte ReadPPU(int addr)
-		{
-			if (addr < 0x2000)
-			{
-				int x = (addr >> 10) & 7;
-				int bank = (chr[x] & chr_bank_mask_1k) << 10;
-				return VROM[bank + (addr & 0x3FF)]; // TODO
-			}
-
-			return base.ReadPPU(addr);
-		}
-
-		public override byte ReadWRAM(int addr)
+				}
+		}
+
+		public override byte ReadPPU(int addr)
 		{
-			return ROM[(((prg[3] & prg_bank_mask_8k)) << 13) + (addr & 0x1FFF)];
-		}
-
-		public override byte ReadPRG(int addr)
-		{
-			int bank_8k;
-			if (addr < 0x2000) // 0x8000
-			{
-				bank_8k = prg[0] & prg_bank_mask_8k;
-				
-			}
-			else if (addr < 0x4000) // 0xA000
-			{
-				bank_8k = prg[1] & prg_bank_mask_8k;
-			}
-			else if (addr < 0x6000) // 0xC000
-			{
-				bank_8k = prg[2] & prg_bank_mask_8k;
-			}
-			else
-			{
-				bank_8k = prg_bank_mask_8k;
-			}
-
-			return ROM[(bank_8k << 13) + (addr & 0x1FFF)];
-		}
-	}
-}
+			if (addr < 0x2000)
+			{
+				int x = (addr >> 10) & 7;
+				int bank = (chr[x] & chr_bank_mask_1k) << 10;
+				return VROM[bank + (addr & 0x3FF)]; // TODO
+			}
+
+			return base.ReadPPU(addr);
+		}
+
+		public override byte ReadWRAM(int addr)
+		{
+			return ROM[(((prg[3] & prg_bank_mask_8k)) << 13) + (addr & 0x1FFF)];
+		}
+
+		public override byte ReadPRG(int addr)
+		{
+			int bank_8k;
+			if (addr < 0x2000) // 0x8000
+			{
+				bank_8k = prg[0] & prg_bank_mask_8k;
+				
+			}
+			else if (addr < 0x4000) // 0xA000
+			{
+				bank_8k = prg[1] & prg_bank_mask_8k;
+			}
+			else if (addr < 0x6000) // 0xC000
+			{
+				bank_8k = prg[2] & prg_bank_mask_8k;
+			}
+			else
+			{
+				bank_8k = prg_bank_mask_8k;
+			}
+
+			return ROM[(bank_8k << 13) + (addr & 0x1FFF)];
+		}
+	}
+}
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper186.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper186.cs
index 77ae9596bc..51aa6e1286 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper186.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper186.cs
@@ -20,6 +20,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			_SRAM.Dispose();
+			regs.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			ser.Sync("SRAM", ref _SRAM);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper227.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper227.cs
index c2435da69d..464944047e 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper227.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper227.cs
@@ -36,6 +36,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			prg_banks_16k.Dispose();
+			base.Dispose();
+		}
+
 		public override byte ReadPRG(int addr)
 		{
 			int bank_16k = addr >> 14;
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper241.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper241.cs
index 4823b5245c..7499234655 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper241.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper241.cs
@@ -31,6 +31,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			prg_banks_32k.Dispose();
+			base.Dispose();
+		}
+
 		public override byte ReadEXP(int addr)
 		{
 			//some kind of magic number..
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper243.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper243.cs
index f9398c5298..3c92f064c0 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper243.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper243.cs
@@ -28,6 +28,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			regs.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			ser.Sync("reg_addr", ref reg_addr);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper246.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper246.cs
index 11f73e3025..365c7f9ee6 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper246.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper246.cs
@@ -82,7 +82,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
-		void SyncMap()
+		private void SyncMap()
 		{
 			ApplyMemoryMapMask(prg_bank_mask_8k, prg_banks_8k);
 			ApplyMemoryMapMask(chr_bank_mask_2k, chr_banks_2k);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper252.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper252.cs
index 55b533f218..52af4d130e 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper252.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper252.cs
@@ -34,6 +34,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			preg.Dispose();
+			creg.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper253.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper253.cs
index 5e3c9fc3b0..89bb8d6dc0 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper253.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper253.cs
@@ -31,6 +31,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			prg.Dispose();
+			chrlo.Dispose();
+			chrhi.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
@@ -148,9 +156,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 			}
 
-
 			return base.ReadPPU(addr);
 		}
+
 		public override void WritePPU(int addr, byte value)
 		{
 			if (addr < 0x2000)
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Subor.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Subor.cs
index 02e711333b..361a5b3d31 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Subor.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Subor.cs
@@ -23,6 +23,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			regs.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Sunsoft3.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Sunsoft3.cs
index 887562f752..87c94d79cb 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Sunsoft3.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Sunsoft3.cs
@@ -32,6 +32,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			SyncIRQ();
 		}
 
+		public override void Dispose()
+		{
+			prg_banks_16k.Dispose();
+			chr_banks_2k.Dispose();
+			base.Dispose();
+		}
+
 		public override bool Configure(NES.EDetectionOrigin origin)
 		{
 			switch (Cart.board_type)
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-64in1-NR.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-64in1-NR.cs
index 75a165f3e4..9386a87c91 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-64in1-NR.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-64in1-NR.cs
@@ -25,6 +25,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			regs.Dispose();
+			base.Dispose();
+		}
+
 		public override void WriteEXP(int addr, byte value)
 		{
 			if (addr >= 0x1000 && addr <= 0x1003)
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-Ghostbusters63in1.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-Ghostbusters63in1.cs
index 5651c23ca7..afef3e003d 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-Ghostbusters63in1.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-Ghostbusters63in1.cs
@@ -1,75 +1,81 @@
-using BizHawk.Common;
-using BizHawk.Common.NumberExtensions;
+using BizHawk.Common;
+using BizHawk.Common.NumberExtensions;
 using System;
 
-namespace BizHawk.Emulation.Cores.Nintendo.NES
-{
-	// Adapted from FCEUX src
-	public sealed class UNIF_BMC_Ghostbusters63in1 : NES.NESBoardBase
-	{
-		private ByteBuffer reg = new ByteBuffer(2);
-		private readonly int[] banks = new [] { 0, 0, 524288, 1048576};
-		private int bank;
-
-		[MapperProp]
-		public bool Ghostbusters63in1_63set=true;
-		[MapperProp]
-		public int Ghostbusters63in1_chip_22_select;
-
-		public override bool Configure(NES.EDetectionOrigin origin)
-		{
-			switch (Cart.board_type)
-			{
-				case "UNIF_BMC-Ghostbusters63in1":
-					break;
-				default:
-					return false;
-			}
-
-			AutoMapperProps.Apply(this);
-
-			return true;
-		}
-
-		public override void SyncState(Serializer ser)
-		{
-			ser.Sync("reg", ref reg);
-			ser.Sync("bank", ref bank);
-			ser.Sync("bank", ref Ghostbusters63in1_63set);
-			ser.Sync("bank", ref Ghostbusters63in1_chip_22_select);
-			base.SyncState(ser);
-		}
-
-		public override void WritePRG(int addr, byte value)
-		{
-			reg[addr & 1] = value;
-
-			bank = ((reg[0] & 0x80) >> 7) | ((reg[1] & 1) << 1);
-
-			SetMirrorType(reg[0].Bit(6) ? EMirrorType.Vertical : EMirrorType.Horizontal);
-			Console.WriteLine(reg[0]);
-			Console.WriteLine(reg[1]);
-		}
-
-		public override byte ReadPRG(int addr)
-		{
-			//if (bank == 1)
-			//{
-			//	return NES.DB;
-			//}
-
-			if (reg[0].Bit(5))
+namespace BizHawk.Emulation.Cores.Nintendo.NES
+{
+	// Adapted from FCEUX src
+	public sealed class UNIF_BMC_Ghostbusters63in1 : NES.NESBoardBase
+	{
+		private ByteBuffer reg = new ByteBuffer(2);
+		private readonly int[] banks = new [] { 0, 0, 524288, 1048576};
+		private int bank;
+
+		[MapperProp]
+		public bool Ghostbusters63in1_63set=true;
+		[MapperProp]
+		public int Ghostbusters63in1_chip_22_select;
+
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "UNIF_BMC-Ghostbusters63in1":
+					break;
+				default:
+					return false;
+			}
+
+			AutoMapperProps.Apply(this);
+
+			return true;
+		}
+
+		public override void Dispose()
+		{
+			reg.Dispose();
+			base.Dispose();
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			ser.Sync("reg", ref reg);
+			ser.Sync("bank", ref bank);
+			ser.Sync("bank", ref Ghostbusters63in1_63set);
+			ser.Sync("bank", ref Ghostbusters63in1_chip_22_select);
+			base.SyncState(ser);
+		}
+
+		public override void WritePRG(int addr, byte value)
+		{
+			reg[addr & 1] = value;
+
+			bank = ((reg[0] & 0x80) >> 7) | ((reg[1] & 1) << 1);
+
+			SetMirrorType(reg[0].Bit(6) ? EMirrorType.Vertical : EMirrorType.Horizontal);
+			Console.WriteLine(reg[0]);
+			Console.WriteLine(reg[1]);
+		}
+
+		public override byte ReadPRG(int addr)
+		{
+			//if (bank == 1)
+			//{
+			//	return NES.DB;
+			//}
+
+			if (reg[0].Bit(5))
 			{
 				var offset=0;
 				if (Ghostbusters63in1_63set)
 					offset = banks[bank];
 				else
 					offset = banks[Ghostbusters63in1_chip_22_select];
-
-				int b = (reg[0] & 0x1F);
-				return ROM[offset + (b << 14) + (addr & 0x3FFF)];
-			}
-			else
+
+				int b = (reg[0] & 0x1F);
+				return ROM[offset + (b << 14) + (addr & 0x3FFF)];
+			}
+			else
 			{
 				var offset = 0;
 				if (Ghostbusters63in1_63set)
@@ -77,9 +83,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 				else
 					offset = banks[Ghostbusters63in1_chip_22_select];
 
-				int b = ((reg[0] >> 1) & 0x0F);
-				return ROM[offset + (b << 15) + addr];
-			} 
-		}
-	}
-}
+				int b = ((reg[0] >> 1) & 0x0F);
+				return ROM[offset + (b << 15) + addr];
+			} 
+		}
+	}
+}
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMCFK23C.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMCFK23C.cs
index 1d3bcbd36c..3f70692c66 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMCFK23C.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMCFK23C.cs
@@ -15,7 +15,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 
 		private int prg_mask_8k, chr_mask_1k;
 
-
 		public override bool Configure(NES.EDetectionOrigin origin)
 		{
 			switch (Cart.board_type)
@@ -69,6 +68,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			exRegs.Dispose();
+			chr_regs_1k.Dispose();
+			prg_regs_8k.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC_Super24in1SC03.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC_Super24in1SC03.cs
index d576df6be2..8bd3ad0fdd 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC_Super24in1SC03.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC_Super24in1SC03.cs
@@ -1,52 +1,58 @@
-using BizHawk.Common;
-using BizHawk.Common.NumberExtensions;
-
-namespace BizHawk.Emulation.Cores.Nintendo.NES
-{
-	public sealed class UNIF_BMC_Super24in1SC03 : MMC3Board_Base
-	{
-		private ByteBuffer exRegs = new ByteBuffer(3);
-		private readonly int[] masko8 = { 63, 31, 15, 1, 3, 0, 0, 0 };
-		public override bool Configure(NES.EDetectionOrigin origin)
-		{
-			switch (Cart.board_type)
-			{
-				case "UNIF_BMC-Super24in1SC03":
-					break;
-				default:
-					return false;
-			}
-
-			BaseSetup();
-
-			exRegs[0] = 0x24;
-			exRegs[1] = 159;
-			exRegs[2] = 0;
-
-			return true;
-		}
-
-		public override void SyncState(Serializer ser)
-		{
-			base.SyncState(ser);
-			ser.Sync("exRegs", ref exRegs);
-		}
-
-		public override void WriteEXP(int addr, byte value)
-		{
-			switch (addr)
-			{
-				case 0x1FF0:
-					exRegs[0] = value; break;
-				case 0x1FF1:
-					exRegs[1] = value; break;
-				case 0x1FF2:
-					exRegs[2] = value; break;
-			}
-
-			base.WriteEXP(addr, value);
-		}
-
+using BizHawk.Common;
+using BizHawk.Common.NumberExtensions;
+
+namespace BizHawk.Emulation.Cores.Nintendo.NES
+{
+	public sealed class UNIF_BMC_Super24in1SC03 : MMC3Board_Base
+	{
+		private ByteBuffer exRegs = new ByteBuffer(3);
+		private readonly int[] masko8 = { 63, 31, 15, 1, 3, 0, 0, 0 };
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "UNIF_BMC-Super24in1SC03":
+					break;
+				default:
+					return false;
+			}
+
+			BaseSetup();
+
+			exRegs[0] = 0x24;
+			exRegs[1] = 159;
+			exRegs[2] = 0;
+
+			return true;
+		}
+
+		public override void Dispose()
+		{
+			exRegs.Dispose();
+			base.Dispose();
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("exRegs", ref exRegs);
+		}
+
+		public override void WriteEXP(int addr, byte value)
+		{
+			switch (addr)
+			{
+				case 0x1FF0:
+					exRegs[0] = value; break;
+				case 0x1FF1:
+					exRegs[1] = value; break;
+				case 0x1FF2:
+					exRegs[2] = value; break;
+			}
+
+			base.WriteEXP(addr, value);
+		}
+
 		public override byte ReadPRG(int addr)
 		{
 			int bank_8k = addr >> 13;
@@ -56,8 +62,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			NV |= (exRegs[1] << 1);
 
 			return ROM[(NV << 13) + (addr & 0x1FFF)];
-		}
-
+		}
+
 		public override byte ReadPPU(int addr)
 		{
 			if (addr < 0x2000)
@@ -76,8 +82,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 			else
 				return base.ReadPPU(addr);
-		}
-
+		}
+
 		public override void WritePPU(int addr, byte value)
 		{
 			if (addr < 0x2000)
@@ -95,6 +101,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			}
 			else
 				base.WritePPU(addr, value);
-		}
-	}
-}
+		}
+	}
+}
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_UNL-LH10.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_UNL-LH10.cs
index 5f9d5447c5..ff6e12e7d4 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_UNL-LH10.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_UNL-LH10.cs
@@ -94,4 +94,4 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return base.ReadPPU(addr);
 		}
 	}
-}
+}
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_UNL-TF1201.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_UNL-TF1201.cs
index 56a2b73bcf..04df29aadc 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_UNL-TF1201.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_UNL-TF1201.cs
@@ -31,6 +31,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			return true;
 		}
 
+		public override void Dispose()
+		{
+			chr.Dispose();
+			base.Dispose();
+		}
+
 		public override void SyncState(Serializer ser)
 		{
 			base.SyncState(ser);