1 files changed, 69 insertions, 0 deletions
diff --git a/src/chip8.hpp b/src/chip8.hpp
new file mode 100644
index 0000000..f144341
--- /dev/null
+++ b/src/chip8.hpp
@@ -0,0 +1,69 @@
+#ifndef CHIP8_H_
+#define CHIP8_H_
+
+#include <cstdint>
+#include <random>
+
+const uint32_t VIDEO_HEIGHT = 32;
+const uint32_t VIDEO_WIDTH = 64;
+
+class Chip8 {
+  public:
+    Chip8();
+
+  public:
+    uint8_t registers[16] {};
+    uint8_t memory[4096] {};
+    
+    uint16_t index {};
+    uint16_t pc {};
+    uint16_t stack[16] {};
+    uint8_t sp {};
+
+    uint8_t delayTimer {};
+    uint8_t soundTimer {};
+
+    uint8_t keypad[16] {};
+    uint32_t video[VIDEO_WIDTH * VIDEO_HEIGHT] {};
+
+    uint16_t opcode;
+
+  private:
+    std::default_random_engine randGen;
+    std::uniform_int_distribution<uint8_t> randByte;
+
+  public:
+    void LoadROM(const char* filename);
+    void SetupTable();
+
+  public:
+    void Cycle();
+
+  public:
+    typedef void (Chip8::*OpcodeFunction)();
+    OpcodeFunction table[0x10u];
+    OpcodeFunction table0[0xFu];
+    OpcodeFunction table8[0xFu];
+    OpcodeFunction tableE[0xFu];
+    OpcodeFunction tableF[0x65u];
+    
+    void Table0();
+    void Table8();
+    void TableE();
+    void TableF();
+
+    void OP_NULL(); void OP_00E0(); void OP_00EE();
+    void OP_1nnn(); void OP_2nnn(); void OP_3xkk();
+    void OP_4xkk(); void OP_5xy0(); void OP_6xkk();
+    void OP_7xkk(); void OP_8xy0(); void OP_8xy1();
+    void OP_8xy2(); void OP_8xy3(); void OP_8xy4();
+    void OP_8xy5(); void OP_8xy6(); void OP_8xy7();
+    void OP_8xyE(); void OP_9xy0(); void OP_Annn();
+    void OP_Bnnn(); void OP_Cxkk(); void OP_Dxyn();
+    void OP_Ex9E(); void OP_ExA1(); void OP_Fx07();
+    void OP_Fx0A(); void OP_Fx15(); void OP_Fx18();
+    void OP_Fx1E(); void OP_Fx29(); void OP_Fx33();
+    void OP_Fx55(); void OP_Fx65();
+};
+
+#endif