From 6a22d1cd5cf43e017f16e545168f4560726affbe Mon Sep 17 00:00:00 2001
From: adelikat <adelikat@tasvideos.org>
Date: Sat, 3 Sep 2016 16:24:29 -0400
Subject: [PATCH] Implement unif_BMC-ws board

---
 .../BizHawk.Emulation.Cores.csproj            |  1 +
 .../NES/Boards/UNIF/UNIF_BMC-190in1.cs        |  2 +-
 .../Nintendo/NES/Boards/UNIF/UNIF_BMC-WS.cs   | 81 +++++++++++++++++++
 3 files changed, 83 insertions(+), 1 deletion(-)
 create mode 100644 BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-WS.cs

diff --git a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
index e10b38108f..a684268e3f 100644
--- a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
+++ b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
@@ -731,6 +731,7 @@
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-GS-2004.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-GS-2013.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-T-262.cs" />
+    <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-WS.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_UNL-AX5705.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_UNL-CC-21.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_UNL-EDU2000.cs" />
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-190in1.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-190in1.cs
index 81f22b44bb..c5091bfc3f 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-190in1.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-190in1.cs
@@ -3,7 +3,7 @@ using BizHawk.Common.NumberExtensions;
 
 namespace BizHawk.Emulation.Cores.Nintendo.NES
 {
-	public class UNIF_BMC_190in1 : NES.NESBoardBase
+	public sealed class UNIF_BMC_190in1 : NES.NESBoardBase
 	{
 		private int _reg;
 
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-WS.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-WS.cs
new file mode 100644
index 0000000000..2a78d8ce9e
--- /dev/null
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-WS.cs
@@ -0,0 +1,81 @@
+using BizHawk.Common;
+
+namespace BizHawk.Emulation.Cores.Nintendo.NES
+{
+	// Based on Nitnendulator src
+	public sealed class UNIF_BMC_WS : NES.NESBoardBase
+	{
+		private byte _reg0;
+		private byte _reg1;
+
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "UNIF_BMC-WS":
+					break;
+				default:
+					return false;
+			}
+
+			return true;
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("reg0", ref _reg0);
+			ser.Sync("reg1", ref _reg1);
+		}
+
+		public override void WriteWRAM(int addr, byte value)
+		{
+			if ((_reg0 & 0x20) > 0)
+			{
+				return;
+			}
+
+			switch (addr & 1)
+			{
+				case 0:
+					_reg0 = value;
+					break;
+				case 1:
+					_reg1 = value;
+					break;
+			}
+
+			if ((_reg0 & 0x10) > 0)
+			{
+				SetMirrorType(EMirrorType.Horizontal);
+			}
+			else
+			{
+				SetMirrorType(EMirrorType.Vertical);
+			}
+		}
+
+		public override byte ReadPRG(int addr)
+		{
+			if ((_reg0 & 0x08) > 0)
+			{
+				return ROM[((_reg0 & 0x07) * 0x4000) + (addr & 0x3FFF)];
+			}
+			else
+			{
+				return ROM[(((_reg0 & 0x6) >> 1) * 0x8000) + (addr & 0x7FFF)];
+			}
+
+		}
+
+		public override byte ReadPPU(int addr)
+		{
+			if (addr < 0x2000)
+			{
+				return VROM[((_reg1 & 0x07) * 0x2000) + (addr & 0x1FFF)];
+			}
+
+			return base.ReadPPU(addr);
+		}
+	}
+}