diff --git a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
index dc1fba5083..71b27acb6c 100644
--- a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
+++ b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
@@ -733,6 +733,7 @@
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-A65AS.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-BS-5.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-D1038.cs" />
+    <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-Ghostbusters63in1.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-GS-2004.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-GS-2013.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-T-262.cs" />
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
new file mode 100644
index 0000000000..631d6e08fd
--- /dev/null
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-Ghostbusters63in1.cs
@@ -0,0 +1,69 @@
+using BizHawk.Common;
+using BizHawk.Common.NumberExtensions;
+
+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 int Ghostbusters63in1_chip;
+
+		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_chip);
+			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);
+		}
+
+		public override byte ReadPRG(int addr)
+		{
+			//if (bank == 1)
+			//{
+			//	return NES.DB;
+			//}
+
+			if (reg[0].Bit(5))
+			{
+				var offset = (Ghostbusters63in1_chip % 3) * (1024 * 512);
+				int b = (reg[0] & 0x1F);
+				return ROM[offset + (b << 14) + (addr & 0x3FFF)];
+			}
+			else
+			{
+				var offset = (Ghostbusters63in1_chip % 3) * (1024 * 512);
+				int b = ((reg[0] >> 1) & 0x0F);
+				return ROM[offset + (b << 15) + addr];
+			} 
+		}
+	}
+}