 = (
					parseInt("100000000", 2)
					- xxx
				);

				var _chk = checksum.toString(2);
				if (_chk.length > 8) {
					_chk = _chk.substring(0, 8);
				}

				toValue("sbyte0", parseInt(_chk, 2));

				var comb = parseInt("" + _b6 + _b5 + _b4 + _b3 + _b2 + _b1 + document.getElementById("sbyte0").value, 2);

				console.log("PRE:  " + "" + _b6 + _b5 + _b4 + _b3 + _b2 + _b1 + document.getElementById("sbyte0").value);
				console.log("POST: " + comb.toString(2));


				_calculate(comb, 56, "sbyte7");
				v