RTC_SET
RTC_WRITE( RTC_CONTROL, ctrl | RTC_SET );
RTC_WRITE( RTC_CONTROL, ctrl & ~RTC_SET );
CMOS_WRITE((save_control | RTC_SET), RTC_CONTROL);
if (ctrl & RTC_SET)
CMOS_WRITE(ctrl & ~RTC_SET, RTC_CONTROL);
chrp_cmos_clock_write((save_control|RTC_SET), RTC_CONTROL);
CMOS_WRITE(RTC_SET, RTC_CONTROL);
CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL);