21-39125-01 DS12887 & DS12887A Dallas Semiconductor (aka Maxim) Clock Battery for Alphaserver
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Reworking the DS1287 / DS1387 RTC chip
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/i/18768/products/2018-01-30T03%3A19%3A20.522Z-DSC05319.JPG?1606306133 "GW-12887-1 DS12887 RTC Replacement Module from The Glitch Works on Tindie")