diff --git a/BizHawk.Emulation/BizHawk.Emulation.csproj b/BizHawk.Emulation/BizHawk.Emulation.csproj
index 8c4a218d52..b5760efad5 100644
--- a/BizHawk.Emulation/BizHawk.Emulation.csproj
+++ b/BizHawk.Emulation/BizHawk.Emulation.csproj
@@ -158,6 +158,7 @@
     <Compile Include="Consoles\Nintendo\NES\Boards\Mapper069.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\Mapper090.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\Mapper091.cs" />
+    <Compile Include="Consoles\Nintendo\NES\Boards\Mapper101.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\Mapper107.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\Mapper116.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\Mapper120.cs" />
diff --git a/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper101.cs b/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper101.cs
new file mode 100644
index 0000000000..cb3a15d654
--- /dev/null
+++ b/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper101.cs
@@ -0,0 +1,57 @@
+using System;
+using System.IO;
+using System.Diagnostics;
+
+namespace BizHawk.Emulation.Consoles.Nintendo
+{
+	//Urusei Yatsura - Lum no Wedding Bell (J)
+	class Mapper101 : NES.NESBoardBase
+	{
+		//configuration
+		int chr_bank_mask_8k;
+
+		//state
+		int chr_bank_8k;
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("chr_bank_8k", ref chr_bank_8k);
+		}
+
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			//configure
+			switch (Cart.board_type)
+			{
+				case "MAPPER101":
+					AssertPrg(32); AssertWram(0); AssertVram(0); AssertBattery(false);
+					break;
+				default:
+					return false;
+			}
+
+			chr_bank_mask_8k = (Cart.chr_size / 8) - 1;
+
+			SetMirrorType(Cart.pad_h, Cart.pad_v);
+
+			return true;
+		}
+
+		public override byte ReadPPU(int addr)
+		{
+			if (addr < 0x2000)
+			{
+				int ofs = addr & ((1 << 13) - 1);
+				addr = (chr_bank_8k << 13) | ofs;
+				return VROM[addr];
+			}
+			else return base.ReadPPU(addr);
+		}
+
+		public override void WriteWRAM(int addr, byte value)
+		{
+			chr_bank_8k = value & chr_bank_mask_8k;
+		}
+	}
+}