Hi, > On Aug 3, 2024, at 12:09 PM, Norby Droid via Freedos-user > <freedos-user@lists.sourceforge.net> wrote: > > You can check the cmos battery. This battery is round and thin and is what > keeps the date and time from resetting. May be some other issue, but that is > one place ya can start.
Some laptops use the main battery and do not have a special battery for the CMOS/Clock. Also, some desktop machines can be a little different. For example, my PentiumPro does not have a battery per se. Instead, it has is a Dallas DS12887A integrated circuit. Inside that “chip” are the RTC, CMOS memory and a battery. After the system was about 23 years old, the battery inside the chip eventually failed. I had to de-solder the IC. Dropped in a socket and a new chip. The first chip I dropped in was “new old stock” and only lasted a few months. However, I then found someone who has been manufacturing new ones. Stuck it in a couple years ago and has been fine since. There are known mods to add a external battery to that chip. But, I never bothered. But like Norby said… Most desktop machines have a “coin” or “button” battery for the clock and CMOS memory. Hopefully, it is just that and not something more serious. :-) Jerome > > On Sat, Aug 3, 2024 at 11:58 Karen Lewellen via Freedos-user > <freedos-user@lists.sourceforge.net > <mailto:freedos-user@lists.sourceforge.net>> wrote: > Hi all, > At the most basic level, what helps a computer keep time / date? > I have a situation where mine is skipping time / date, often within > seconds, even when set back. > My computer is not over heating, fan running quite cool to the touch. > Was working just fine until late last night when I turned it off. > basic ideas? > for the record, I only run dos on this machine. > Thanks, > Karen > > > > > _______________________________________________ > Freedos-user mailing list > Freedos-user@lists.sourceforge.net <mailto:Freedos-user@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/freedos-user > <https://lists.sourceforge.net/lists/listinfo/freedos-user> > _______________________________________________ > Freedos-user mailing list > Freedos-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-user
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