void mc146818_device::set_base_datetime()
{
system_time systime;
system_time::full_time current_time;
machine().base_datetime(systime);
current_time = (m_use_utc) ? systime.utc_time: systime.local_time;
// logerror("mc146818_set_base_datetime %02d/%02d/%02d %02d:%02d:%02d\n",
// current_time.year % 100, current_time.month + 1, current_time.mday,
// current_time.hour,current_time.minute, current_time.second);
set_seconds(current_time.second);
set_minutes(current_time.minute);
set_hours(current_time.hour);
set_dayofweek(current_time.weekday + 1);
set_dayofmonth(current_time.mday);
set_month(current_time.month + 1);
if(m_binyear)
set_year((current_time.year - m_epoch) % (m_data[REG_B] & REG_B_DM ? 0x100 : 100)); // pcd actually depends on this
else
set_year((current_time.year - m_epoch) % 100);
if (m_century_index >= 0)
m_data[m_century_index] = to_ram(current_time.year / 100);
}
void mc146818_device::set_base_datetime()
{
system_time systime;
system_time::full_time current_time;
machine().base_datetime(systime);
current_time = (m_use_utc) ? systime.utc_time: systime.local_time;
// logerror("mc146818_set_base_datetime %02d/%02d/%02d %02d:%02d:%02d\n",
// current_time.year % 100, current_time.month + 1, current_time.mday,
// current_time.hour,current_time.minute, current_time.second);
set_seconds(current_time.second);
set_minutes(current_time.minute);
set_hours(current_time.hour);
set_dayofweek(current_time.weekday + 1);
set_dayofmonth(current_time.mday);
set_month(current_time.month + 1);
set_year(current_time.year % 100);
if (m_century_index >= 0)
m_data[m_century_index] = to_ram(current_time.year / 100);
}
void mc146818_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch (id)
{
case TIMER_PERIODIC:
m_data[REG_C] |= REG_C_PF;
update_irq();
break;
case TIMER_CLOCK:
if (!(m_data[REG_B] & REG_B_SET))
{
/// TODO: find out how the real chip deals with updates when binary/bcd values are already outside the normal range
int seconds = get_seconds() + 1;
if (seconds < 60)
{
set_seconds(seconds);
}
else
{
set_seconds(0);
int minutes = get_minutes() + 1;
if (minutes < 60)
{
set_minutes(minutes);
}
else
{
set_minutes(0);
int hours = get_hours() + 1;
if (hours < 24)
{
set_hours(hours);
}
else
{
set_hours(0);
int dayofweek = get_dayofweek() + 1;
if (dayofweek <= 7)
{
set_dayofweek(dayofweek);
}
else
{
set_dayofweek(1);
}
int dayofmonth = get_dayofmonth() + 1;
if (dayofmonth <= gregorian_days_in_month(get_month(), get_year() + 2000))
{
set_dayofmonth(dayofmonth);
}
else
{
set_dayofmonth(1);
int month = get_month() + 1;
if (month <= 12)
{
set_month(month);
}
else
{
set_month(1);
set_year((get_year() + 1) % 100);
}
}
}
}
}
if ((m_data[REG_ALARM_SECONDS] == m_data[REG_SECONDS] || (m_data[REG_ALARM_SECONDS] & ALARM_DONTCARE) == ALARM_DONTCARE) &&
(m_data[REG_ALARM_MINUTES] == m_data[REG_MINUTES] || (m_data[REG_ALARM_MINUTES] & ALARM_DONTCARE) == ALARM_DONTCARE) &&
(m_data[REG_ALARM_HOURS] == m_data[REG_HOURS] || (m_data[REG_ALARM_HOURS] & ALARM_DONTCARE) == ALARM_DONTCARE))
{
// set the alarm interrupt flag AF
m_data[REG_C] |= REG_C_AF;
}
// set the update-ended interrupt Flag UF
m_data[REG_C] |= REG_C_UF;
update_irq();
m_last_refresh = machine().time();
}
break;
}
}
