Add project files.

include/bus.hpp

@@ -0,0 +1,81 @@
+#pragma once
+
+#include <array>
+
+#include "util.hpp"
+#include "cpu.hpp"
+#include "lcd.hpp"
+#include "rom.hpp"
+
+typedef union
+{
+	BYTE b;
+	struct
+	{
+		BYTE select : 2;
+		BYTE enable : 1;
+		BYTE padding : 5;
+	} w;
+} TimerControl;
+
+typedef union
+{
+	BYTE b;
+	struct
+	{
+		BYTE rightA : 1;
+		BYTE leftB : 1;
+		BYTE upSelect : 1;
+		BYTE downStart : 1;
+		BYTE selectDirKeys : 1;
+		BYTE selectButtonKeys : 1;
+		BYTE unused : 2;
+	} w;
+} JoypadReg;
+
+struct Joypad
+{
+	bool a, b, up, down, left, right, start, select;
+};
+
+class Bus
+{
+public:
+	Bus();
+	~Bus();
+
+	void AttachCPU(CPU& cpu);
+	void AttachLCD(LCD& lcd);
+	void InsertROM(ROM& rom);
+
+	bool Tick();
+	bool Execute();
+	bool Frame();
+
+	BYTE Read(WORD addr);
+	void Write(WORD addr, BYTE val);
+	BYTE Fetch(WORD addr);
+
+private:
+	BYTE& GetReference(WORD addr);
+
+public:
+	ROM* rom;
+	CPU* cpu;
+	LCD* lcd;
+
+	BYTE invalid;
+	BYTE div;
+	BYTE tima;
+	BYTE tma;
+	BYTE dmg_rom;
+	JoypadReg joypadReg;
+	TimerControl tac;
+	size_t internalCounter = 0;
+
+	Joypad joypad;
+
+	// std::array<BYTE, 0x2000> vram;
+	std::array<BYTE, 0x2000> wram;
+	std::array<BYTE, 0x80> hram;
+};