diff options
| -rw-r--r-- | src/dev/mc146818.cc | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/dev/mc146818.cc b/src/dev/mc146818.cc index 8d289a416..b25b015d2 100644 --- a/src/dev/mc146818.cc +++ b/src/dev/mc146818.cc @@ -52,6 +52,15 @@ bcdize(uint8_t val) return result; } +static uint8_t +unbcdize(uint8_t val) +{ + uint8_t result; + result = val & 0xf; + result += (val >> 4) * 10; + return result; +} + void MC146818::setTime(const struct tm time) { @@ -101,9 +110,16 @@ MC146818::~MC146818() void MC146818::writeData(const uint8_t addr, const uint8_t data) { - if (addr < RTC_STAT_REGA) + if (addr < RTC_STAT_REGA) { clock_data[addr] = data; - else { + curTime.tm_sec = unbcdize(sec); + curTime.tm_min = unbcdize(min); + curTime.tm_hour = unbcdize(hour); + curTime.tm_mday = unbcdize(mday); + curTime.tm_mon = unbcdize(mon) - 1; + curTime.tm_year = ((unbcdize(year) + 50) % 100) + 1950; + curTime.tm_wday = unbcdize(wday) - 1; + } else { switch (addr) { case RTC_STAT_REGA: // The "update in progress" bit is read only. |