PCF8563_R_YEAR
®, 1, &bcd[reg], PCF8563_R_YEAR - reg + 1,
(bcdtobin(bcd[PCF8563_R_YEAR] & PCF8563_M_YEAR) % 100);
bcd[PCF8563_R_YEAR] = bintobcd(dt->dt_year % 100);
if ((error = iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP, sc->sc_addr, ®, 1, &bcd[reg], PCF8563_R_YEAR - reg + 1, 0)) != 0) {