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initial RTC implementation

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SimoneN64
2023-06-06 10:59:36 +02:00
parent 8fb0dd826d
commit d0a27d1af1
1 changed files with 27 additions and 1 deletions
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28
src/backend/core/mmio/PIF.cpp
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@@ -201,8 +201,34 @@ void PIF::ProcessCommands(Mem &mem) {
case 6:
res[0] = 0x00;
res[1] = 0x10;
res[2] = 0x00;
res[2] = 0x80;
break;
case 7:
switch(cmd[CMD_START]) {
case 0: case 3:
for(int i = 0; i < 8; i++) {
res[i] = 0;
}
break;
case 2: {
auto now = std::time(nullptr);
tm gmtm{};
if(gmtime_s(&gmtm, &now)) {
Util::panic("Could not retrieve time!");
}
res[0] = BCD_ENCODE(gmtm.tm_sec);
res[1] = BCD_ENCODE(gmtm.tm_min);
res[2] = BCD_ENCODE(gmtm.tm_hour) + 0x80;
res[3] = BCD_ENCODE(gmtm.tm_mday);
res[4] = BCD_ENCODE(gmtm.tm_wday);
res[5] = BCD_ENCODE(gmtm.tm_mon);
res[6] = BCD_ENCODE(gmtm.tm_year);
res[7] = (gmtm.tm_year - 1900) >= 100 ? 1 : 0;
} break;
default: Util::panic("Invalid read RTC block {}", cmd[CMD_START]);
}
break;
case 8: break;
default:
Util::panic("Invalid PIF command: {:X}", cmd[2]);
}