UNIF BMC-NTD-03 board support

Core/BmcNtd03.h

@@ -0,0 +1,35 @@
+#pragma once
+#include "stdafx.h"
+#include "BaseMapper.h"
+
+class BmcNtd03 : public BaseMapper
+{
+protected:
+	uint16_t GetPRGPageSize() override { return 0x4000; }
+	uint16_t GetCHRPageSize() override { return 0x2000; }
+
+	void InitMapper() override
+	{
+	}
+
+	void Reset(bool softReset)
+	{
+		BaseMapper::Reset(softReset);
+		WriteRegister(0x8000, 0);
+	}
+
+	void WriteRegister(uint16_t addr, uint8_t value) override
+	{
+		uint8_t prg = ((addr >> 10) & 0x1E);
+		uint8_t chr= ((addr & 0x0300) >> 5) | (addr & 0x07);
+		if(addr & 0x80) {
+			SelectPRGPage(0, prg | ((addr >> 6) & 1));
+			SelectPRGPage(1, prg | ((addr >> 6) & 1));
+		} else {
+			SelectPrgPage2x(0, prg & 0xFE);
+		}
+
+		SelectCHRPage(0, chr);
+		SetMirroringType(addr & 0x400 ? MirroringType::Horizontal : MirroringType::Vertical);
+	}
+};

Core/Core.vcxproj

@@ -424,6 +424,7 @@
     <ClInclude Include="A65AS.h" />
     <ClInclude Include="Bmc70in1.h" />
     <ClInclude Include="BmcG146.h" />
+    <ClInclude Include="BmcNtd03.h" />
     <ClInclude Include="BnRom.h" />
     <ClInclude Include="Bs5.h" />
     <ClInclude Include="Caltron41.h" />

Core/Core.vcxproj.filters

@@ -1042,6 +1042,9 @@
     <ClInclude Include="BmcG146.h">
       <Filter>Nes\Mappers\Unif</Filter>
     </ClInclude>
+    <ClInclude Include="BmcNtd03.h">
+      <Filter>Nes\Mappers\Unif</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="stdafx.cpp">

Core/MapperFactory.cpp

@@ -23,6 +23,7 @@
 #include "Bmc235.h"
 #include "Bmc255.h"
 #include "BmcG146.h"
+#include "BmcNtd03.h"
 #include "BnRom.h"
 #include "Bs5.h"
 #include "Caltron41.h"
@@ -477,6 +478,7 @@ BaseMapper* MapperFactory::GetMapperFromID(RomData &romData)
 		case UnifBoards::Bmc70in1B: return new Bmc70in1();
 		case UnifBoards::Bmc190in1: return new Bmc190in1();
 		case UnifBoards::BmcG146: return new BmcG146();
+		case UnifBoards::BmdNtd03: return new BmcNtd03();
 		case UnifBoards::Bs5: return new Bs5();
 		case UnifBoards::Cc21: return new Cc21();
 		case UnifBoards::Coolboy: return new MMC3_Coolboy();

Core/UnifBoards.h

@@ -32,6 +32,7 @@ namespace UnifBoards {
 		Hp898f,
 		Bb,
 		Ac08,
-		BmcG146
+		BmcG146,
+		BmdNtd03
 	};
 }

Core/UnifLoader.h

@@ -82,7 +82,7 @@ private:
 		{ "NROM-128", 0 },
 		{ "NROM-256", 0 },
 		{ "NTBROM", 68 },
-		{ "NTD-03", UnifBoards::UnknownBoard },
+		{ "NTD-03", UnifBoards::BmdNtd03 },
 		{ "NovelDiamond9999999in1", UnifBoards::NovelDiamond },
 		{ "OneBus", UnifBoards::UnknownBoard },
 		{ "PEC-586", UnifBoards::UnknownBoard },