while (1)
	{
		if (button == 0)
		{
			flag = !flag;
			TR0 = !TR0;
			do{
				} while(button == 0);
		}

		if (flag == 1)
		{
			if (i == 20)
			{
				wave = !wave;
				pos++;

				if (pos > 9)
					pos = 0;

				P2 = no_code[pos];
				i = 0;
			}
		}
	}