diff --git a/BizHawk.Emulation/BizHawk.Emulation.csproj b/BizHawk.Emulation/BizHawk.Emulation.csproj
index 5bee73d4c6..22a9b00004 100644
--- a/BizHawk.Emulation/BizHawk.Emulation.csproj
+++ b/BizHawk.Emulation/BizHawk.Emulation.csproj
@@ -201,6 +201,7 @@
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper052.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper074.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper115.cs" />
+    <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper165.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper182.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper189.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper191.cs" />
diff --git a/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper165.cs b/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper165.cs
new file mode 100644
index 0000000000..751be3cea6
--- /dev/null
+++ b/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper165.cs
@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace BizHawk.Emulation.Consoles.Nintendo
+{
+	// Fire Emblem (Ch)
+	// mmc3 with mmc2-style chr swapping
+	// seem to be some graphical glitches...
+	public class Mapper165 : MMC3Board_Base
+	{
+		bool latch0 = false;
+		bool latch1 = false;
+		int real_chr_mask;
+
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "MAPPER165":
+					break;
+				default:
+					return false;
+			}
+			Cart.vram_size = 4;
+
+			real_chr_mask = Cart.chr_size / 4 - 1;
+
+			BaseSetup();
+
+			return true;
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("latch0", ref latch0);
+			ser.Sync("latch1", ref latch1);
+		}
+
+		public override byte ReadPPU(int addr)
+		{
+			byte ret;
+			if (addr < 0x2000)
+			{
+
+				int bank = mmc3.regs[addr < 0x1000 ? latch0 ? 1 : 0 : latch1 ? 4 : 2];
+				if (bank == 0)
+					ret = VRAM[addr & 0xfff];
+				else
+					ret = VROM[(addr & 0xfff) + (((bank >> 2) & real_chr_mask) << 12)];
+			}
+			else
+				ret = base.ReadPPU(addr);
+
+			// latch processes for the next read
+			switch (addr & 0x3ff0)
+			{
+				case 0x0fd0: latch0 = false; break;
+				case 0x0fe0: latch0 = true; break;
+				case 0x1fd0: latch1 = false; break;
+				case 0x1fe0: latch1 = true; break;
+			}
+			return ret;
+		}
+
+		public override void WritePPU(int addr, byte value)
+		{
+			if (addr < 0x2000)
+			{
+				int bank = mmc3.regs[addr < 0x1000 ? latch0 ? 1 : 0 : latch1 ? 4 : 2];
+				if (bank == 0)
+					VRAM[addr & 0xfff] = value;
+			}
+			else
+				base.WritePPU(addr, value);
+		}
+	}
+}