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macrtc: fix clock not telling time on Windows for Mac and Apple IIgs systems. [R. Belmont]

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This commit is contained in:
arbee 2023-01-21 15:21:23 -05:00
parent 533b5577b9
commit fb9c9c58e9
1 changed files with 4 additions and 11 deletions
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15
src/mame/apple/macrtc.cpp
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@ -46,6 +46,8 @@ enum
RTC_STATE_XPWRITE
};
static constexpr uint32_t mac_reference = 0x83da95d0; // Seconds from January 1, 1904, 12:00:00 to when POSIX time starts
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
@ -152,7 +154,7 @@ TIMER_CALLBACK_MEMBER(rtc3430042_device::half_seconds_tick)
void rtc3430042_device::rtc_clock_updated(int year, int month, int day, int day_of_week, int hour, int minute, int second)
{
struct tm cur_time, mac_reference;
struct tm cur_time;
uint32_t seconds;
if (m_time_was_set)
@ -170,16 +172,7 @@ void rtc3430042_device::rtc_clock_updated(int year, int month, int day, int day_
cur_time.tm_year = year+100; // assumes post-2000 current system time
cur_time.tm_isdst = 0;
// The count starts on January 1, 1904 at midnight
mac_reference.tm_sec = 0;
mac_reference.tm_min = 0;
mac_reference.tm_hour = 0;
mac_reference.tm_mday = 1;
mac_reference.tm_mon = 0;
mac_reference.tm_year = 4;
mac_reference.tm_isdst = 0;
seconds = difftime(mktime(&cur_time), mktime(&mac_reference));
seconds = (uint32_t)((uint32_t)mktime(&cur_time) - mac_reference);
}
LOGMASKED(LOG_GENERAL, "second count 0x%lX\n", (unsigned long) seconds);