M41T8X_HR
dt.dt_hour = FROMBCD(data[M41T8X_HR] & ~(M41T8X_CEB | M41T8X_CB));
if (data[M41T8X_HR] & M41T8X_CB)
data[M41T8X_HR] &= M41T8X_CEB;
data[M41T8X_HR] |= M41T8X_CB;
data[M41T8X_HR] |= TOBCD(dt.dt_hour);