void DrawBGMode7Background16New (uint8 *Screen);
void DrawBGMode7Background16 (uint8 *Screen, int bg, int depth);
void DrawBGMode7Background16Add (uint8 *Screen, int bg, int depth);
void DrawBGMode7Background16Add1_2 (uint8 *Screen, int bg, int depth);
void DrawBGMode7Background16Sub (uint8 *Screen, int bg, int depth);
void DrawBGMode7Background16Sub1_2 (uint8 *Screen, int bg, int depth);

void DrawBGMode7Background16Prio (uint8 *Screen, int bg);
void DrawBGMode7Background16PrioAdd (uint8 *Screen, int bg);
void DrawBGMode7Background16PrioAdd1_2 (uint8 *Screen, int bg);
void DrawBGMode7Background16PrioSub (uint8 *Screen, int bg);
void DrawBGMode7Background16PrioSub1_2 (uint8 *Screen, int bg);