NesHawk - support board UNIF_BMC-NTD-03

BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj

@@ -762,6 +762,7 @@
     <Compile Include="Consoles\Nintendo\NES\Boards\UNIF\UNIF_BMC-Ghostbusters63in1.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-NTD-03.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_BMCFK23C.cs" />

BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF/UNIF_BMC-NTD-03.cs

@@ -0,0 +1,63 @@
+using BizHawk.Common;
+using BizHawk.Common.NumberExtensions;
+
+namespace BizHawk.Emulation.Cores.Nintendo.NES
+{
+	public sealed class UNIF_BMC_NTD_03 : NES.NESBoardBase
+	{
+		private int latche;
+
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "UNIF_BMC-NTD-03":
+					break;
+				default:
+					return false;
+			}
+
+
+			return true;
+		}
+
+		public override void SyncState(Serializer ser)
+		{
+			ser.Sync("latche", ref latche);
+			base.SyncState(ser);
+		}
+
+		public override void WritePRG(int addr, byte value)
+		{
+			latche = addr & 65535;
+			SetMirrorType(addr.Bit(10) ? EMirrorType.Horizontal : EMirrorType.Vertical);
+		}
+
+		public override byte ReadPPU(int addr)
+		{
+			if (addr < 0x2000)
+			{
+				int bank = ((latche & 0x0300) >> 5) | (latche & 7);
+				return VROM[(bank << 13) + addr];
+			}
+
+			return base.ReadPPU(addr);
+		}
+
+		public override byte ReadPRG(int addr)
+		{
+			int prg = ((latche >> 10) & 0x1E);
+
+			if (latche.Bit(7))
+			{
+				int bank = prg | ((latche >> 6) & 1);
+				return ROM[(bank << 14) + (addr & 0x3FFF)];
+			}
+			else
+			{
+				int bank = prg >> 1;
+				return ROM[( bank << 15) + addr];
+			}
+		}
+	}
+}