initial upload

src/gameboy.cpp

@@ -0,0 +1,94 @@
+#include <iostream>
+#include "gameboy.hpp"
+
+bool AddressSpace::getBootromState()
+{
+	return bootromLoaded;
+}
+
+void AddressSpace::unmapBootrom()
+{
+	bootromLoaded = false;
+}
+
+void AddressSpace::mapBootrom()
+{
+	bootromLoaded = true;
+}
+
+void AddressSpace::loadBootrom(std::string filename)
+{
+	std::ifstream file;
+	int size = std::filesystem::file_size(filename);
+	if(size != 256)
+	{
+		std::cerr << "Bootrom was an unexpected size!\nQuitting!\n" << std::endl;
+		exit(1);
+	}
+	file.open(filename, std::ios::binary);
+	file.read(reinterpret_cast<char *>(bootrom), BOOTROM_SIZE);
+}
+
+void AddressSpace::loadGame(std::string filename)
+{
+	game.open(filename, std::ios::binary);
+
+	if(!game.is_open())
+	{
+		std::cerr << "Game was not found!\nQuitting!\n" << std::endl;
+		exit(1);
+	}
+	game.read(reinterpret_cast<char *>(memoryLayout.romBank1), ROM_BANK_SIZE*2);
+}
+
+void GameBoy::addCycles(uint8_t ticks)
+{
+	cycles = (cycles+ticks) % T_CLOCK_FREQ;
+	lastOpTicks = ticks;
+}
+
+void test()
+{
+	printf("");
+}
+
+void GameBoy::start(std::string bootrom, std::string game)
+{
+	addressSpace.loadBootrom(bootrom);
+	addressSpace.loadGame(game);
+
+	bool quit = false;
+	while(!quit)
+	{
+		// Event loop: Check and handle SDL events
+//		if(SDL_PollEvent(&event))
+//		{
+//			if(event.type == SDL_QUIT)
+//			{
+//				quit = true; // Set the quit flag when the close button is hit
+//			}
+//		}
+
+		opcodeHandler();
+		interruptHandler();
+		//timing();
+		ppuUpdate();
+		if(PC == 0x8c && DE.hi == 0)
+			test();
+		if(PC > 0xFF && addressSpace.getBootromState())
+		{
+			addressSpace.unmapBootrom();
+		}
+		if(PC > 0x2FF)
+		{
+			test();
+		}
+		int cyclesSince = cyclesSinceLastRefresh();
+		if(cyclesSince > FRAME_DURATION)
+		{
+			lastRefresh = cycles;
+			SDL2present();
+		}
+	}
+}
+