UNIF: Added support for Sachen 9602B board

Core/Core.vcxproj

@@ -534,6 +534,7 @@
     <ClInclude Include="MovieRecorder.h" />
     <ClInclude Include="AsciiTurboFile.h" />
     <ClInclude Include="RawVideoFilter.h" />
+    <ClInclude Include="Sachen9602.h" />
     <ClInclude Include="ServerInformationMessage.h" />
     <ClInclude Include="SystemActionManager.h" />
     <ClInclude Include="DatachBarcodeReader.h" />

Core/Core.vcxproj.filters

@@ -1384,6 +1384,9 @@
     <ClInclude Include="Bmc8157.h">
       <Filter>Nes\Mappers\Unif</Filter>
     </ClInclude>
+    <ClInclude Include="Sachen9602.h">
+      <Filter>Nes\Mappers\Sachen</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="stdafx.cpp">

Core/MapperFactory.cpp

@@ -204,6 +204,7 @@
 #include "Sachen74LS374N.h"
 #include "Sachen74LS374NB.h"
 #include "Sachen8259.h"
+#include "Sachen9602.h"
 #include "SealieComputing.h"
 #include "Smb2j.h"
 #include "StudyBox.h"
@@ -553,6 +554,7 @@ BaseMapper* MapperFactory::GetMapperFromID(RomData &romData)
 		case UnifBoards::MaliSB: return new MMC3_MaliSB();
 		case UnifBoards::NovelDiamond: return new NovelDiamond();
 		case UnifBoards::Rt01: return new Rt01();
+		case UnifBoards::Sachen9602: return new Sachen9602();
 		case UnifBoards::Smb2j: return new Smb2j();
 		case UnifBoards::StreetHeroes: return new MMC3_StreetHeroes();
 		case UnifBoards::Super24in1Sc03: return new MMC3_Super24in1Sc03();

Core/Sachen9602.h

@@ -0,0 +1,50 @@
+#pragma once
+#include "stdafx.h"
+#include "MMC3.h"
+
+class Sachen9602 : public MMC3
+{
+private:
+	uint8_t _regs[2];
+
+protected:
+	bool ForceChrBattery() override { return true; }
+	uint32_t GetChrRamSize() override { return 0x8000; }
+
+	void InitMapper() override
+	{
+		_regs[0] = _regs[1] = 0;
+		MMC3::InitMapper();
+	}
+
+	void StreamState(bool saving) override
+	{
+		MMC3::StreamState(saving);
+		Stream(_regs[0], _regs[1]);
+	}
+
+	void SelectPRGPage(uint16_t slot, uint16_t page, PrgMemoryType memoryType = PrgMemoryType::PrgRom) override
+	{
+		MMC3::SelectPRGPage(slot, (page & 0x3F) | (_regs[1] << 6));
+		MMC3::SelectPRGPage(_prgMode ? 0 : 2, 0x3E);
+		MMC3::SelectPRGPage(3, 0x3F);
+	}
+
+	void WriteRegister(uint16_t addr, uint8_t value) override
+	{
+		switch(addr & 0xE001) {
+			case 0x8000:
+				_regs[0] = value;
+				break;
+
+			case 0x8001:
+				if((_regs[0] & 0x07) < 6) {
+					_regs[1] = value >> 6;
+					value &= 0x1F;
+					UpdatePrgMapping();
+				}
+				break;
+		}
+		MMC3::WriteRegister(addr, value);
+	}
+};

Core/UnifBoards.h

@@ -56,5 +56,6 @@ namespace UnifBoards {
 		Fk23Ca,
 		Unl255in1,
 		UnlD1038,
+		Sachen9602,
 	};
 }

Core/UnifLoader.cpp

@@ -91,7 +91,7 @@ std::unordered_map<string, int> UnifLoader::_boardMappings = std::unordered_map<
 	{ "SA-016-1M", 146 },
 	{ "SA-72007", 145 },
 	{ "SA-72008", 133 },
-	{ "SA-9602B", UnifBoards::UnknownBoard },
+	{ "SA-9602B", UnifBoards::Sachen9602 },
 	{ "SA-NROM", 143 },
 	{ "SAROM", 1 },
 	{ "SBROM", 1 },