extern unsigned int _binary_DSC09311_256_data_pal_start;
extern unsigned int _binary_DSC09311_256_data_pal_end;
extern unsigned int _binary_DSC09311_256_data_pal_size;

extern unsigned int _binary_DSC09311_256_data_start;
extern unsigned int _binary_DSC09311_256_data_end;
extern unsigned int _binary_DSC09311_256_data_size;

#include "io_reg.h"
#include "vram.h"
#include "register_values.h"
#include "copy.h"
#include "nib.h"
#include "type.h"
#include "oam.h"

void _start(void)
{
  int height = 240;
  int width = 160;

  u8 * pal = (u8*)&_binary_DSC09311_256_data_pal_start;
  u16 * _pram = (u16 *)&pram.bg[0][0];
  for (int color = 0; color < 256; color++) {
    int r = pal[color * 3 + 0] >> 3;
    int g = pal[color * 3 + 1] >> 3;
    int b = pal[color * 3 + 2] >> 3;
    _pram[color] = PRAM_RGB15(r, g, b);
  }

  u32 _vram;

  for (int y = 0; y < height; y++) {
    for (int x = 0; x < width; x++) {
      u8 index = ((u8 *)(&_binary_DSC09311_256_data_start))[y * width + x];

      switch (x & 0x3) {
      case 0: _vram = index; break;
      case 1: _vram |= index << 8; break;
      case 2: _vram |= index << 16; break;
      case 3: _vram |= index << 24;
        *((u32 *)(0x6000000 + (y * width + x))) = _vram;
        break;
      }
    }
  }

  while ((io_reg.VCOUNT & 0xff) < 161);

  io_reg.DISPCNT =
    ( DISPCNT__BG2
    | DISPCNT__BG_MODE_4
    | DISPCNT__FRAMEBUFFER(0)
    );

  while (1) {
    io_reg.HALTCNT = 0;
  };
}