initial commit

src/Cartridge.cpp

@@ -0,0 +1,59 @@
+#include "Cartridge.hpp"
+#include "Bus.hpp"
+#include "Log.hpp"
+
+#include <fstream>
+
+#include "Mapper.hpp"
+#include "mappers/Mapper000.hpp"
+
+Cartridge::Cartridge(Bus* bus) :
+	bus(bus)
+{
+}
+
+Cartridge::~Cartridge()
+{
+	delete mapper;
+}
+
+Byte Cartridge::ReadCPU(Word addr)
+{
+	return mapper->ReadCPU(addr);
+}
+
+Byte Cartridge::ReadPPU(Word addr)
+{
+	return mapper->ReadPPU(addr);
+}
+
+void Cartridge::WriteCPU(Word addr, Byte val)
+{
+	mapper->WriteCPU(addr, val);
+}
+
+void Cartridge::WritePPU(Word addr, Byte val)
+{
+	mapper->WritePPU(addr, val);
+}
+
+void Cartridge::Load(std::string path)
+{
+	std::ifstream file(path, std::ios::binary);
+	if (!file)
+		throw std::runtime_error("Failed to open file " + path);
+
+	LOG_CORE_INFO("Extracting header");
+	Header header;
+	file.read((char*)&header, sizeof(Header));
+
+	uint8_t mapperNumber = (header.MapperHi & 0xF0) | (header.MapperLo >> 4);
+	LOG_CORE_INFO("Cartridge requires Mapper {0:d}", mapperNumber);
+	switch (mapperNumber)
+	{
+	case 0:	mapper = new Mapper000(header, file);	break;
+
+	default:
+		throw std::runtime_error("Unsupported mapper ID " + std::to_string(mapperNumber));
+	}
+}