Date: Sat, 18 Dec 2004 13:50:40 -0200 From: Antonio Torres <antonio.torres@newspace.net.br> To: freebsd-isp@freebsd.org Subject: Re: Problems with autoboot on powerup... Message-ID: <20041218135040.52278191.antonio.torres@newspace.net.br> In-Reply-To: <NKEJKOHEKMBIMCCEHEPKKEBJEGAA.blacksir@number.ru> References: <1103370180.648.5.camel@Mobile1.276NET> <NKEJKOHEKMBIMCCEHEPKKEBJEGAA.blacksir@number.ru>
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On Sat, 18 Dec 2004 18:11:31 +0300 "Alexander Vasenin aka BlackSir" <blacksir@number.ru> wrote: > Hi! Month ago on some Russian forums I've seen a conversation about how to > workaround if a motherboard BIOS doesn't have "Bootup after power fail" or > similar option. The solution was to attach one wire of ATX power cord to > ground(or maybe to +5V). I think if you make some google you'll find the proper > wire and scheme of attachment. (My internal voice tell me that was a grey wire, > but I'm not sure) > > Alexander Vasenin aka BlackSir > > > Greetings. I was just hoping that someone has had experience getting > > the PCChips motherboards to boot on lan, or boot with power. The bios > > does not have the same nifty options like the old days, where it has an > > option for keeping the state just before losing power. I have noticed > > this on alot of new bioses. They don't allow you to tell the > > motherboard to autoboot, when power if applied. > >... You can put a small capacitor on terminals of the "power switch". The Power supply will "think" You pressed the power switch exactly after the AC Power comes up. The capacitor may be about 1 uF to 10 uF, depends on Power Supply; You need some tests.. Of course, You need some hardware knowledge, specialy to *do not invert polarity of capacitor*. (with reverse polarity, some capacitors, will work for a while, but fails in 2 or 3 months...) Antonio Torres antonio.torres@newspace.net.br
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