instruction encoding and decoding working

src/emu.h

@@ -3,8 +3,13 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
+#include <stdbool.h>
 #include "memory.h"
 
+#define FLAG_ZERO (1 << 0)
+#define FLAG_NEGATIVE (1 << 1)
+#define FLAG_OVERFLOW (1 << 2)
+
 // -- TYPES -- //
 typedef struct {
     uint16_t regs[REG_MAX];
@@ -13,8 +18,11 @@ typedef struct {
     uint32_t pc;
     uint32_t ihp;
     uint32_t sp;
+
+    bool halted;
 } Emulator;
 
 // -- FUNCTIONS -- //
 Emulator* initEmulator(uint32_t memorySize);
-void freeEmulator(Emulator* emu);
+void freeEmulator(Emulator* emu);
+void startEmulator(Emulator* emu);