diff options
| -rw-r--r-- | hw/mc146818rtc.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c index d5746835a1..69addba0cb 100644 --- a/hw/mc146818rtc.c +++ b/hw/mc146818rtc.c @@ -206,6 +206,7 @@ static void rtc_set_time(RTCState *s) static void rtc_update_second(void *opaque) { RTCState *s = opaque; + int64_t delay; /* if the oscillator is not in normal operation, we do not update */ if ((s->cmos_data[RTC_REG_A] & 0x70) != 0x20) { @@ -218,8 +219,13 @@ static void rtc_update_second(void *opaque) /* update in progress bit */ s->cmos_data[RTC_REG_A] |= REG_A_UIP; } + /* should be 244 us = 8 / 32768 seconds, but currently the + timers do not have the necessary resolution. */ + delay = (ticks_per_sec * 1) / 100; + if (delay < 1) + delay = 1; qemu_mod_timer(s->second_timer2, - s->next_second_time + (ticks_per_sec * 99) / 100); + s->next_second_time + delay); } } |