Add project files.

include/cpu.hpp

@@ -0,0 +1,110 @@
+#pragma once
+
+#include <array>
+#include <string>
+#include "util.hpp"
+
+class Bus;
+
+struct Register
+{
+	union
+	{
+		WORD w;
+		struct
+		{
+			BYTE lo, hi;
+		} b;
+	};
+
+	char name[3];
+};
+
+typedef union {
+	BYTE b;
+	struct
+	{
+		BYTE vblank : 1;
+		BYTE lcd_stat : 1;
+		BYTE timer : 1;
+		BYTE serial : 1;
+		BYTE joypad : 1;
+		BYTE padding : 3;
+	} flags;
+} Interrupt;
+
+typedef union
+{
+	BYTE b;
+	struct
+	{
+		BYTE unused : 4;
+		BYTE carry : 1;
+		BYTE halfCarry : 1;
+		BYTE negative : 1;
+		BYTE zero : 1;
+	} f;
+} StatusFlag;
+
+typedef union
+{
+	BYTE b;
+
+	struct
+	{
+		BYTE z : 3;
+		BYTE y : 3;
+		BYTE x : 2;
+	} xyz;
+
+	struct
+	{
+		BYTE padding1 : 3;
+		BYTE q : 1;
+		BYTE p : 2;
+		BYTE padding2 : 2;
+	} pq;
+} Opcode;
+
+class CPU
+{
+public:
+	void Powerup();
+	void Tick();
+
+	friend class Bus;
+
+public:
+	Interrupt interruptEnable;
+	Interrupt interruptFlag;
+
+	size_t totalCycles;
+	BYTE cycles;
+
+	Register AF;	// Acc & Flags
+	Register BC;
+	Register DE;
+	Register HL;
+	Register SP;		// Stack pointer
+	Register PC;		// Program counter
+	StatusFlag* flag;
+
+	Opcode opcode;
+
+	std::array<Register*, 4> rp;
+	std::array<Register*, 4> rp2;
+
+	BYTE ime;
+
+	Bus* bus;
+
+	bool stopped;
+	bool halted;
+	bool justHaltedWithDI;
+
+private:
+	void WriteToRegister(BYTE reg, BYTE val);
+	BYTE ReadFromRegister(BYTE reg);
+	void ALU(BYTE operation, BYTE operand);
+	void CBPrefixed();
+};