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#ifndef _EMULATOR_H_
#define _EMULATOR_H_
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <pthread.h>
#include <sys/stat.h>
typedef struct
{
// general purpose registers
union
{
uint8_t V[16]; //VF is the flag register
struct
{
uint8_t V0;
uint8_t V1;
uint8_t V2;
uint8_t V3;
uint8_t V4;
uint8_t V5;
uint8_t V6;
uint8_t V7;
uint8_t V8;
uint8_t V9;
uint8_t VA;
uint8_t VB;
uint8_t VC;
uint8_t VD;
uint8_t VE;
uint8_t VF; //flag register
};
};
// index register
uint16_t I;
} Registers;
typedef struct
{
uint8_t activated;
uint8_t value;
} Key;
typedef struct
{
volatile uint8_t is_on;
volatile uint8_t draw_flag;
volatile uint8_t delay_timer;
volatile uint8_t sound_timer;
pthread_t timers_thread;
uint8_t display[64][32];
Key keys[16];
Registers regs;
uint8_t sp; //stack pointer
uint16_t stack[16];
uint16_t pc; //program counter
uint8_t memory[4096];
} Emulator;
int emulator_initialise(Emulator* emulator);
int emulator_deinitialise(Emulator* emulator);
int emulator_load_rom(Emulator* emulator, char* rom_name);
int emulator_tick(Emulator* emulator);
void emulator_step(Emulator* emulator);
void emulator_dump_registers(Emulator* emulator);
int emulator_handle_key_press(Emulator* emulator, uint8_t key);
int emulator_handle_key_release(Emulator* emulator, uint8_t key);
void* emulator_timers_thread();
#endif
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