Hi IWanYuan,
Thanks for the post.
Based on my research, The RTC (Real time clock) which is implemented in hardware and is battery backed up. It keeps time even when there is no power. When a PC is turned on the current time is read from this chip. In the very first PCs it was part of the CMOS RAM chip. But in newer PCs all the functionality of often in the 'South bridge' chip, along with many other functions. If you would like to make the time data returned and set by ACPI come from the COIN RTC designed by yourself, this issue is more related to development, kindly open the Edge and press Ctrl+Alt+I to open the Microsoft Feedback Hub and feedback the development issue. Thanks very much for your understanding.
Best Regards,
Ian Xue
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