M41ST84_REG_MIN
dt->dt_min = bcdtobin(bcd[M41ST84_REG_MIN] & M41ST84_MIN_MASK);
bcd[M41ST84_REG_MIN] = bintobcd(dt->dt_min);
bcd[M41ST84_REG_MIN] = bintobcd(dt->dt_min) |
(cur[M41ST84_REG_MIN] & M41ST84_MIN_OFIE);