decode method
Implementation
void decode(int? data) {
if (data != null) {
if (data < 0 || data >= 256) {
throw RangeError.range(data, 0, 255);
}
MB = ((data >> 7) & 1) == 1;
ME = ((data >> 6) & 1) == 1;
CF = ((data >> 5) & 1) == 1;
SR = ((data >> 4) & 1) == 1;
IL = ((data >> 3) & 1) == 1;
TNF = data & 7;
}
}