Tag Archives: real time clock

Dallas DS1287, DS 1287, RTC, CR2032 lithium battery modification, clock and RAM, article cover

Dallas DS 1287 Modification: External Battery

Do you have an old IBM computer, maybe a PS/2 Model 30 or another machine from the late 80s or early 90s, that no longer maintains the BIOS configuration? Do you end up with errors 161, 162, and 163 when I start up? […]

DS1287 replacement nwX287 by Necroware, IBM PS/2 model 30 286, article cover

IBM PS/2, DS1287 – nwX287

Welcome! Let's tackle a fundamental repair on the IBM PS/2 Model 30 286: the replacement of the Real Time Clock (RTC), specifically the Dallas DS1287, with a modern alternative, the nwX287 by Necroware. IBM Computer Configuration Errors The Dallas DS1287, also present [...]