Replaced the Dallas 12887 RTC on this ASUS P/I-P55T2P4. Now it doesn't POST with dual voltage (2.8 vcore) CPUs such as MMX 166 and 233. 3.3v P133 and P200 CPUs still work.
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RTC Reset if Power Button is pressed for 10 seconds
Cracked the top off and replaced the battery in an old RTC/CMOS module to revive an old motherboard. : r/techsupportmacgyver
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RTCModH1x0 < Main < Wiki
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So I tried fixing the Dallas ds12887a RTC on my aOpen ap53 motherboard. It didn't go over so well... : r/retrocomputing
5B20L37434 Lenovo MotherBoard I5-6200U 4GB WIN RTC 80SR002SUS 510-15ISK - Walmart.com
