void DreamcastFile::timeToDec(vmu_timestamp_t *tbcd) {
tbcd->cent=bcd_to_dec(tbcd->cent);
tbcd->year=bcd_to_dec(tbcd->year);
tbcd->month=bcd_to_dec(tbcd->month);
tbcd->day=bcd_to_dec(tbcd->day);
tbcd->hour=bcd_to_dec(tbcd->hour);
tbcd->min=bcd_to_dec(tbcd->min);
tbcd->sec=bcd_to_dec(tbcd->sec);
tbcd->dow=bcd_to_dec(tbcd->dow);
}
void get_time(struct tm *t)
{
int osec, n;
unsigned long i;
struct sigaction sa;
/* Start a timer to keep us from getting stuck on a dead clock. */
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
sa.sa_handler = timeout;
sigaction(SIGALRM, &sa, NULL);
dead = 0;
alarm(5);
do {
osec = -1;
n = 0;
do {
if (dead) {
fprintf(stderr, "readclock: CMOS clock appears dead\n");
exit(1);
}
/* Clock update in progress? */
if (read_register(RTC_REG_A) & RTC_A_UIP) continue;
t->tm_sec = read_register(RTC_SEC);
if (t->tm_sec != osec) {
/* Seconds changed. First from -1, then because the
* clock ticked, which is what we're waiting for to
* get a precise reading.
*/
osec = t->tm_sec;
n++;
}
} while (n < 2);
/* Read the other registers. */
t->tm_min = read_register(RTC_MIN);
t->tm_hour = read_register(RTC_HOUR);
t->tm_mday = read_register(RTC_MDAY);
t->tm_mon = read_register(RTC_MONTH);
t->tm_year = read_register(RTC_YEAR);
/* Time stable? */
} while (read_register(RTC_SEC) != t->tm_sec
|| read_register(RTC_MIN) != t->tm_min
|| read_register(RTC_HOUR) != t->tm_hour
|| read_register(RTC_MDAY) != t->tm_mday
|| read_register(RTC_MONTH) != t->tm_mon
|| read_register(RTC_YEAR) != t->tm_year);
if ((read_register(RTC_REG_B) & RTC_B_DM_BCD) == 0) {
/* Convert BCD to binary (default RTC mode). */
t->tm_year = bcd_to_dec(t->tm_year);
t->tm_mon = bcd_to_dec(t->tm_mon);
t->tm_mday = bcd_to_dec(t->tm_mday);
t->tm_hour = bcd_to_dec(t->tm_hour);
t->tm_min = bcd_to_dec(t->tm_min);
t->tm_sec = bcd_to_dec(t->tm_sec);
}
t->tm_mon--; /* Counts from 0. */
/* Correct the year, good until 2080. */
if (t->tm_year < 80) t->tm_year += 100;
if (y2kflag) {
/* Clock with Y2K bug, interpret 1980 as 2000, good until 2020. */
if (t->tm_year < 100) t->tm_year += 20;
}
}
