/*
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 *(at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef CHIP8_H
#define CHIP8_H

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <time.h>

#define WIDTH 64
#define HEIGHT 32
#define KEY_SIZE 15
#define MEMORY_SIZE 4096
#define REGISTER_COUNT 16
#define STACK_SIZE 16
#define MAX_ROM_SIZE 0x1000 - 0x200 // memory size - reserved memory
#define PROGRAM_START 0x200
#define FONT_WIDTH 5
#define FONT_BYTE_SIZE 80
#define BYTE_MASK 0x80
#define PIXEL_COLOR 0xFFFFFF
#define TIMER_FREQUENCY 60

int load_rom();
void chip8_init();
void chip8_draw_sprite(int startx, int starty, uint16_t mem, uint8_t size);
void chip8_cycle();
void chip8_beep();
void unknown_opcode(uint16_t bad_opcode);
void chip8_timer_cycle();

#endif