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Article #3840Re: pc clock
From: CBFalconer
Date: Wed, 12 Jun 2002 02:41
Date: Wed, 12 Jun 2002 02:41
34 lines
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2804 bytes
Andy Champ wrote: > > ben wrote: > > > My pc clock seems to be slowing down by about 6 hours a day! Has it got > > anything to do with the pc battery. I thought a weak pc battery ( usually > > the coin type) will only show the CMOS message that tells one to reset the > > CMOS. I have replaced a pc battery before.........in this case. Is there > > another separate clock battery?.......if so how do I replace it? > > > > Anyone can point me in the right direction? > > > > Thanks > > > > > Two things I know of can do this kind of thing: > > (1) low CMOS battery. When the main power is off there's enough juice > to keep the RAM, but not to run the clck oscillator - hence it stops > whenever power is off. > (2) something in the system that masks interrupts for very long times. > > 6 hours seems a bit short for (1) and much too long for (2) so it must > be something else! However, try replacing the CMOS battery. I think that was eliminated. However 6 hrs per day is about 25% of the time, so look for something that disables interrupts for 25% of the time. The disable length needs to spread over about two clock ticks per shot, which will only be a few millisecs. -- Chuck F (cbfalconer@yahoo.com) (cbfalconer@worldnet.att.net) Available for consulting/temporary embedded and systems. <http://cbfalconer.home.att.net> USE worldnet address!
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: ff9b0,2e46e310bc4e9bd8 X-Google-Attributes: gidff9b0,public X-Google-Thread: f5f89,7a1401a6e40bdf58 X-Google-Attributes: gidf5f89,public X-Google-Thread: 10483c,2e46e310bc4e9bd8 X-Google-Attributes: gid10483c,public X-Google-Thread: 1011f8,2e46e310bc4e9bd8 X-Google-Attributes: gid1011f8,public X-Google-ArrivalTime: 2002-06-11 19:41:34 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!wn1feed!worldnet.att.net!bgtnsc05-news.ops.worldnet.att.net.POSTED!not-for-mail Message-ID: <3D06A504.C7463151@yahoo.com> From: CBFalconer <cbfalconer@yahoo.com> Reply-To: cbfalconer@worldnet.att.net Organization: Ched Research X-Mailer: Mozilla 4.75 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: alt.comp.hardware,alt.comp.periphs.mainboard.asus,alt.comp.periphs.mainboard.giga-byte,jaring.pcbase Subject: Re: pc clock References: <ae5bbn$87l$1@news5.jaring.my> <3D0681F0.8050301@read.my.sig> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 36 Date: Wed, 12 Jun 2002 02:41:33 GMT NNTP-Posting-Host: 12.90.175.125 X-Complaints-To: abuse@worldnet.att.net X-Trace: bgtnsc05-news.ops.worldnet.att.net 1023849693 12.90.175.125 (Wed, 12 Jun 2002 02:41:33 GMT) NNTP-Posting-Date: Wed, 12 Jun 2002 02:41:33 GMT