RTC_STATUSA
while (rtcin(RTC_STATUSA) & RTCSA_TUP) {
writertc(RTC_STATUSA, rtc_statusa);
writertc(RTC_STATUSA, rtc_statusa);
rtcin(RTC_STATUSA), rtcin(RTC_STATUSB), rtcin(RTC_INTR));
if (!(rtcin(RTC_STATUSA) & RTCSA_TUP)) {
if (!(rtcin(RTC_STATUSA) & RTCSA_TUP)) {
if (!(rtcin(RTC_STATUSA) & RTCSA_TUP))
writertc(RTC_STATUSA, rtc_statusa);
writertc(RTC_STATUSA, rtc_statusa);