From 9846b3a0504bafd4b4da47653b1d7eb07d7178a4 Mon Sep 17 00:00:00 2001
From: adelikat <adelikat@tasvideos.org>
Date: Sun, 23 Aug 2015 17:05:00 -0400
Subject: [PATCH] NESHawk - implement board UNIF_BMC-D1038

---
 .../BizHawk.Emulation.Cores.csproj            |  1 +
 .../NES/Boards/UNIF/UNIF_BMC-D1038.cs         | 85 +++++++++++++++++++
 2 files changed, 86 insertions(+)
 create mode 100644 BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-D1038.cs

diff --git a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
index e0f1537eca..e127421c3d 100644
--- a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
+++ b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
@@ -643,6 +643,7 @@
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-8157.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-A65AS.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-BS-5.cs" />
+    <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-D1038.cs" />
     <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" />
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-D1038.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-D1038.cs
new file mode 100644
index 0000000000..b3543e83a9
--- /dev/null
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-D1038.cs
@@ -0,0 +1,85 @@
+using BizHawk.Common;
+using BizHawk.Common.NumberExtensions;
+
+namespace BizHawk.Emulation.Cores.Nintendo.NES
+{
+	// 46-in-1 (D1038) [p1][U][!]
+	// 65-in-1 (NT766) [p1][U][!]
+	// 74-in-1 (NT886) [p1][U][!]
+	// 77-in-1 (NT141) [p1][U][!]
+	public sealed class UNIF_BMC_D1038 : NES.NESBoardBase
+	{
+		[MapperProp]
+		public int D1038_Dipswitch;
+
+		private int _reg;
+
+		private int DipswitchMask = 3;
+
+		private bool Prg16kMode {  get { return _reg.Bit(7);  } }
+
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "UNIF_BMC-D1038":
+					break;
+				default:
+					return false;
+			}
+
+			AutoMapperProps.Apply(this);
+
+			return true;
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			base.SyncState(ser);
+			ser.Sync("reg", ref _reg);
+			ser.Sync("D1038_Dipswitch", ref D1038_Dipswitch);
+		}
+
+		public override void WritePRG(int addr, byte value)
+		{
+			_reg = addr;
+
+			SetMirrorType(_reg.Bit(3) ? EMirrorType.Horizontal : EMirrorType.Vertical);
+		}
+
+		public override byte ReadPRG(int addr)
+		{
+			if ((_reg & 0x100) > 0)
+			{
+				return (byte)(D1038_Dipswitch & DipswitchMask);
+			}
+
+			if (Prg16kMode)
+			{
+				int bank = (_reg >> 4) & 7;
+				return ROM[(bank * 0x4000) + (addr & 0x3FFF)];
+			}
+			else
+			{
+				int bank = (_reg >> 5) & 3;
+				return ROM[(bank * 0x8000) + (addr & 0x7FFF)];
+			}
+		}
+
+		public override byte ReadPPU(int addr)
+		{
+			if ((_reg & 0x100) > 0)
+			{
+				return (byte)D1038_Dipswitch;
+			}
+
+			if (addr < 0x2000)
+			{
+				int bank = _reg & 7;
+				return VROM[(bank * 0x2000) + (addr & 0x1FFF)];
+			}
+
+			return base.ReadPPU(addr);
+		}
+	}
+}