diff options
Diffstat (limited to 'hw/mc146818rtc.c')
| -rw-r--r-- | hw/mc146818rtc.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c index 9cbd052..65ed779 100644 --- a/hw/mc146818rtc.c +++ b/hw/mc146818rtc.c @@ -296,9 +296,11 @@ static void rtc_set_time(RTCState *s) tm->tm_sec = rtc_from_bcd(s, s->cmos_data[RTC_SECONDS]); tm->tm_min = rtc_from_bcd(s, s->cmos_data[RTC_MINUTES]); tm->tm_hour = rtc_from_bcd(s, s->cmos_data[RTC_HOURS] & 0x7f); - if (!(s->cmos_data[RTC_REG_B] & REG_B_24H) && - (s->cmos_data[RTC_HOURS] & 0x80)) { - tm->tm_hour += 12; + if (!(s->cmos_data[RTC_REG_B] & REG_B_24H)) { + tm->tm_hour %= 12; + if (s->cmos_data[RTC_HOURS] & 0x80) { + tm->tm_hour += 12; + } } tm->tm_wday = rtc_from_bcd(s, s->cmos_data[RTC_DAY_OF_WEEK]) - 1; tm->tm_mday = rtc_from_bcd(s, s->cmos_data[RTC_DAY_OF_MONTH]); @@ -320,7 +322,8 @@ static void rtc_copy_date(RTCState *s) s->cmos_data[RTC_HOURS] = rtc_to_bcd(s, tm->tm_hour); } else { /* 12 hour format */ - s->cmos_data[RTC_HOURS] = rtc_to_bcd(s, tm->tm_hour % 12); + int h = (tm->tm_hour % 12) ? tm->tm_hour % 12 : 12; + s->cmos_data[RTC_HOURS] = rtc_to_bcd(s, h); if (tm->tm_hour >= 12) s->cmos_data[RTC_HOURS] |= 0x80; } |