diff --git a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
index 2661109f08..bab896a280 100644
--- a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
+++ b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
@@ -623,6 +623,7 @@
+
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper162.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper162.cs
new file mode 100644
index 0000000000..e1ac55fc65
--- /dev/null
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper162.cs
@@ -0,0 +1,79 @@
+using BizHawk.Common;
+
+namespace BizHawk.Emulation.Cores.Nintendo.NES
+{
+ public sealed class Mapper162 : NES.NESBoardBase
+ {
+ private ByteBuffer reg = new ByteBuffer(8);
+ private int prg_bank_mask_32k;
+
+ public override bool Configure(NES.EDetectionOrigin origin)
+ {
+ switch (Cart.board_type)
+ {
+ case "MAPPER162":
+ case "UNIF_UNL-FS304":
+ break;
+ default:
+ return false;
+ }
+
+ prg_bank_mask_32k = Cart.prg_size / 32 - 1;
+
+ reg[0] = 3;
+ reg[3] = 7;
+
+ return true;
+ }
+
+ public override void Dispose()
+ {
+ reg.Dispose();
+ base.Dispose();
+ }
+
+ public override void SyncState(Serializer ser)
+ {
+ ser.Sync("regs", ref reg);
+ base.SyncState(ser);
+ }
+
+ public override void WriteEXP(int addr, byte value)
+ {
+ if (addr >= 0x1000)
+ {
+ reg[(addr >> 8) & 3] = value;
+ }
+ else
+ {
+ base.WriteEXP(addr, value);
+ }
+ }
+
+ public override byte ReadPRG(int addr)
+ {
+ int bank = 0;
+ switch (reg[3] & 7)
+ {
+ case 0:
+ case 2:
+ bank = (reg[0] & 0xc) | (reg[1] & 2) | ((reg[2] & 0xf) << 4);
+ break;
+ case 1:
+ case 3:
+ bank = (reg[0] & 0xc) | (reg[2] & 0xf) << 4;
+ break;
+ case 4:
+ case 6:
+ bank = (reg[0] & 0xe) | ((reg[1] >> 1) & 1) | ((reg[2] & 0xf) << 4);
+ break;
+ case 5:
+ case 7:
+ bank = (reg[0] & 0xf) | ((reg[2] & 0xf) << 4);
+ break;
+ }
+
+ return ROM[((bank & prg_bank_mask_32k) << 15) + addr];
+ }
+ }
+}