Jon, Then why not use a dip compatible version of the DS chip? I mean yes this allows for switchable battery which is very nice but SMT soldering is not for everyone.
I wonder if there is a way to determine if there will be BIOS issues by switching the DS12887? -------- Original message -------- From: Jon Elson <el...@pico-systems.com> Date: 1/22/17 9:16 AM (GMT-08:00) To: gene...@classiccmp.org, "discuss...@classiccmp.org:On-Topic and Off-Topic Posts" <cctalk@classiccmp.org> Subject: Re: DS12887 pcb substitute with battery On 01/22/2017 10:07 AM, Ali wrote: > Al, > I thought the problem with switching these chips was that part of the ROM > code was embedded in them? I.e. it isn't just an issue of battery? Am I > wrong? If I am then why not use one of the replacement chips that are > available? > These don't have a lot of memory on them. many early PCs stored some config info there, but generally the BIOS can reconstruct it if it isn't there. I suppose there is a possibility that random data in the CMOS memory could cause the BIOS to try to use unavailable features and hang. I don't think anybody put actual executable code in there. Jon
