//********************************************************************** 

void	main()
{
	unsigned	char	tbl[] = {
		0b11100000 | 7,
		0b11100000 | 9,
		0b11100000 | 11,
		0b11100000 | 13,
		0b11100000 | 14,
		0b11100000 | 14,
		0b11100000 | 13,
		0b11100000 | 11,
		0b11100000 | 9,
		0b11100000 | 7,
		0b11100000 | 5,
		0b11100000 | 3,
		0b11100000 | 1,
		0b11100000 | 0,
		0b11100000 | 0,
		0b11100000 | 1,
		0b11100000 | 3,
		0b11100000 | 5,
		0b11100000,
		0b11100001,
		0b11100010,
		0b11100011,
		0b11100100,
		0b11100101,
		0b11100110,
		0b11100111,
		0b11101000,
		0b11101001,
		0b11101010,
		0b11101011,
		0b11101100,
		0b11101101,
		0b11101110,
		0b11101111,
	};
	unsigned	char	i;
	CMCON = 0b00000111;
	TRISA = 0b11111111;
	while (1) {
		if (PORTA.F0 == 1) {
			for (i = 0; i < 18; i++)	// サイン波 
				VRCON = tbl[i];
		} else {
			for (i = 18; i < 34; i++)	// のこぎり波 
				VRCON = tbl[i];
		}
	}
}

//**********************************************************************