diff --git a/BizHawk.Emulation/Consoles/Nintendo/Docs/compatibility.txt b/BizHawk.Emulation/Consoles/Nintendo/Docs/compatibility.txt
index f4472eddb8..4a45e84091 100644
--- a/BizHawk.Emulation/Consoles/Nintendo/Docs/compatibility.txt
+++ b/BizHawk.Emulation/Consoles/Nintendo/Docs/compatibility.txt
@@ -93,7 +93,7 @@ Open bus and bus conflict emulation is not considered complete or thorough in an
 152	Misc (J)	Complete
 154	Misc (J)	Nothing
 159	Bandai		{{See 016}}
-164	Pirate		Started
+164	Pirate		Junk - Started
 165	Pirate		Junk
 180	Misc (J)	Complete (but we don't implement the crazy climber controller) 
 182	MMC3Variant	Nothing
@@ -102,7 +102,7 @@ Open bus and bus conflict emulation is not considered complete or thorough in an
 189	MMC3Variant	Nothing
 191	Pirate		Junk
 192	Pirate		Junk
-193	Unlicensed	Junk
+193	Unlicensed	Junk - Started
 194	Pirate		Junk
 200	Multicart	Junk
 201	Multicart	Junk
diff --git a/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper193.cs b/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper193.cs
new file mode 100644
index 0000000000..dbce68e4a9
--- /dev/null
+++ b/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper193.cs
@@ -0,0 +1,76 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace BizHawk.Emulation.Consoles.Nintendo
+{
+	class Mapper193 : NES.NESBoardBase 
+	{
+		int prg, chr0, chr1, chr2;
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "Mapper193":
+					break;
+				default:
+					return false;
+			}
+			SetMirrorType(EMirrorType.Vertical);
+			return true;
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("prg", ref prg);
+			ser.Sync("chr0", ref chr0);
+			ser.Sync("chr1", ref chr1);
+			ser.Sync("chr2", ref chr2);
+		}
+
+		public override void WritePPU(int addr, byte value)
+		{
+			switch (addr)
+			{
+				case 0x6000:
+					chr0 = value;
+					break;
+				case 0x6001:
+					chr1 = value;
+					break;
+				case 0x6002:
+					chr2 = value;
+					break;
+				case 0x6003:
+					prg = value;
+					break;
+			}
+		}
+
+		public override byte ReadPPU(int addr)
+		{
+			if (addr < 0x1000)
+				return VRAM[addr + (chr0 * 0x1000)];
+			else if (addr < 0x1800)
+				return VRAM[addr + (chr1 * 0x0800)];
+			else if (addr < 0x2000)
+				return VRAM[addr + (chr2 * 0x0800)];
+			else
+				return base.ReadPPU(addr);
+		}
+
+		public override byte ReadPRG(int addr)
+		{
+			if (addr < 0xA000)
+				return ROM[addr + (prg * 0x2000)];
+			else if (addr < 0xC000)
+				return 0xFD;
+			else if (addr < 0xE000)
+				return 0xFE;
+			else
+				return 0xFF;
+		}
+	}
+}