foone🏳️⚧️ on X: "Unfortunately... I can't boot it. The problem is the dead CMOS battery. Because this uses a Dallas DS12887A to store the CMOS settings, and it's dead. So I can
So I tried fixing the Dallas ds12887a RTC on my aOpen ap53 motherboard. It didn't go over so well... : r/retrocomputing
Reworking Dallas RTC Modules
DextersLab2013: Dallas DS12887A NVRAM PC CMOS External Battery Hack
FedCo Batteries Compatible with Dallas Semiconductor DS12887A Clock Chip with Battery For Clock Memory
Fixing a Flat Dallas DS1287 Real Time Clock Chip
Battery problem w/ Dallas DS1287 | Vintage Computer Federation Forums