diff --git a/BizHawk.Emulation/BizHawk.Emulation.csproj b/BizHawk.Emulation/BizHawk.Emulation.csproj
index 0b4824b351..dc109fe58e 100644
--- a/BizHawk.Emulation/BizHawk.Emulation.csproj
+++ b/BizHawk.Emulation/BizHawk.Emulation.csproj
@@ -104,6 +104,7 @@
     <Compile Include="Consoles\Nintendo\NES\Boards\IREM_TAM_S1.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\Jaleco-JF_11_14.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\JALECO_JF_05_06_07.cs" />
+    <Compile Include="Consoles\Nintendo\NES\Boards\JALECO_JF_13.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\JALECO_JF_17.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\Mapper069.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\Mapper089.cs" />
diff --git a/BizHawk.Emulation/Consoles/Nintendo/Docs/compatibility.txt b/BizHawk.Emulation/Consoles/Nintendo/Docs/compatibility.txt
index 31568ad493..49131017c1 100644
--- a/BizHawk.Emulation/Consoles/Nintendo/Docs/compatibility.txt
+++ b/BizHawk.Emulation/Consoles/Nintendo/Docs/compatibility.txt
@@ -70,7 +70,7 @@ Open bus and bus conflict emulation is not considered complete or thorough in an
 080	Misc (J)	Nothing
 082	Misc (J)	Nothing
 085	VRC7		Needed (lagrange point)
-086	Misc (J)	Nothing
+086	Misc (J)	Started (One game I tried didn't work but also didn't match the sha1 (but worked in FCEUX)
 087	Misc (J)	Complete
 088	Misc (J)	Nothing
 089	Sunsoft (J)	Complete
diff --git a/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/JALECO_JF_13.cs b/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/JALECO_JF_13.cs
new file mode 100644
index 0000000000..1be28a6496
--- /dev/null
+++ b/BizHawk.Emulation/Consoles/Nintendo/NES/Boards/JALECO_JF_13.cs
@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace BizHawk.Emulation.Consoles.Nintendo
+{
+	//Mapper 86
+	
+	//Example Games:
+	//--------------------------
+	//Moero!! Pro Yakyuu (Black)
+	//Moero!! Pro Yakyuu (Red)
+
+	class JALECO_JF_13 : NES.NESBoardBase
+	{
+		int chr;
+		int prg;
+		int soundon;
+		int soundid;
+
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "JALECO-JF-13":
+					break;
+				default:
+					return false;
+			}
+			SetMirrorType(Cart.pad_h, Cart.pad_v);
+			return true;
+		}
+
+		public override byte ReadPRG(int addr)
+		{
+			if (addr < 0x8000)
+				return ROM[addr + (prg * 0x8000)];
+			else
+				return base.ReadPRG(addr);
+		}
+
+		public override byte ReadPPU(int addr)
+		{
+			if (addr < 0x2000)
+				return VROM[(addr & 0x1FFF) + (chr * 0x2000)];
+			else
+				return base.ReadPPU(addr);
+		}
+
+		public override void WriteWRAM(int addr, byte value)
+		{
+			prg = (value >> 4) & 3;
+			chr = (value & 3) + ((value >> 6) & 1);
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("chr", ref chr);
+			ser.Sync("prg", ref prg);
+			ser.Sync("soundon", ref soundon);
+			ser.Sync("soundid", ref soundid);
+		}
+	}
+}
diff --git a/BizHawk.MultiClient/output/gamedb.txt b/BizHawk.MultiClient/output/gamedb.txt
index 4228f410ad..3c65dfbdb2 100644
--- a/BizHawk.MultiClient/output/gamedb.txt
+++ b/BizHawk.MultiClient/output/gamedb.txt
@@ -76,6 +76,7 @@ sha1:8C7D33753649A2BAF2EAAF8D5FFC2AE8E9316A13		Akira (J)	NES		board=TAITO-TC0190
 sha1:0AE47BD83202A5A2235B0BC16278F56D66038AB5		Deathbots (U)	NES		board=AVE-NINA-06;PRG=64;CHR=64;PAD_H=1;PAD_V=0
 
 ;these roms are in goodNES but theyre junk
+sha1:89C455E1793A1603BB977AD7215AB308B3586958	V	Moero!! Pro Yakyuu (Red)	NES		board=JALECO-JF-13;PRG=128;CHR=64;WRAM=8
 sha1:A906B9E67F0FFCFABB36C9B7140BC2CBA9E1F5A3		Space Shadow (J)	NES		board=BANDAI-74*161/161/32;PRG=64;CHR=128;WRAM=8
 sha1:A1D674D1C7C633A317CFD516EFB9A0350CD0E45E	H	Arkanoid II (J)	NES		board=TAITO-74*161/161/32;PRG=128;CHR=128;WRAM=8
 sha1:4D6117577CE301BB987C5C32FEEF7B132A21B046	H	Afro Man (Mega Man 3 Hack) (UNL)	NES		board=TXROM-HOMEBREW;PRG=256;CHR=128;WRAM=8