I had a machine long ago that had a factory default bios password. That ment you had to type in the password whenever your lost your bios due to the battery going dead. But this password would be the same default password for all models. For the computer I had it was AMI as it was an AMI bios.
Of course this was a 386sx-16MHz computer so it may no be applicable. Also the EEPROM's on the video section could store the plug and play information for the "video card". I think 2k is the miniumn for storing this information. Hope this helps! Jeremy > > From: "Faasse, P.R." <[EMAIL PROTECTED]> > Date: 2003/07/24 Thu AM 07:19:23 EDT > To: Multiple recipients of list CHIPDIR-L <[EMAIL PROTECTED]> > Subject: RE: OT: Siemens/Fuijtsu PC BIOS password? > > > -----Original Message----- > > From: Pieter Hoeben [mailto:[EMAIL PROTECTED] > > Sent: donderdag 24 juli 2003 12:29 > > To: Multiple recipients of list CHIPDIR-L > > Subject: Re: OT: Siemens/Fuijtsu PC BIOS password? > > > > > > Hi, > > > > If there is a battery, remove it and wait for at least a day to make > > sure the SRAM (if there is any) is empty. In those old days, > > Done that. Besides: the C-mos config was empty upon arrival. The C-mos > battery (3.0 V CR2032) measured at 0.03 Volts :-) I think that caused > the whole problem... Together with someone who put a !*&@^#*&[EMAIL PROTECTED] BIOS > password on the board. > > > settings were sometimes stored in a battery backedup (clock) ic. > > I could have another look, but the first inspection did not result in > any DS12XXX or similar 'blocks' found on the board. I estimated that the > Intel chipset in combination with the 3-volts button cell did the c-mos > storage on this board. > > > It can also be in a flashprom, you can search for a larger device > > with something like 28F.. or 29F... on it. Probably a DIP device. > > Forgot to mention that: There are 4 eeprom-type devices on the > board: > > - one 24C04 close to the video controller, this would be > my 'prime suspect' of holding the password. I have not seen many > 24C04-like chips on video controllers (yet..:-) > > - one 24C16 close to the sound controller, I've seen these chips > before on soubdblaster-like cards, i'd expect this one to > hold the soundchip(s) configuration > > - one 93C46 on the on-board LAN controller, seen that before too: > usually it holds the MAC address & LAN controller stettings... > > - the flash BIOS itself (suspect #2, in very close competition with > the prime suspect..): unfortunately it's a 28E020 tsop package. > Very thin, and very fine-pitched pins. I am confident that i could > remove it from the board. I do however not think that there is any way > that i could put it back in a way that will result in a working computer > :-( These pins are too small for me to solder... > > > You could try to find another pc and copy their flash using a > > standard eprom-programmer. Or download a bin file or hex > > file from Fujitsu (or just ask them this file) and burn it into > > your flashprom using a standard programmer > > The thing refuses to boot on anything -> in-circuit flashing is out... > I can remove the BIOS but not solder it back... This would indeed be > my usual approch to this kind of problems, but a tsop package is holding > me back this time... > > > Regards, > > Pieter Hoeben > > email: [EMAIL PROTECTED] > > > > Date sent: Thu, 24 Jul 2003 01:09:19 -0800 > > To: Multiple recipients of list CHIPDIR-L <CHIPDIR- > > [EMAIL PROTECTED]> > > Send reply to: [EMAIL PROTECTED] > > Organization: Fat City Network Services, San Diego, California > > > > > A friend donated me an old Fujitsu (now Siemens?) Ergopro X > > PC a few > > days ago. > > > The PC is of the type type nr. X354/166-32-2.0GB, meaning a > > P166 with > > 32 MB RAM, > > > 2.0 GBytes disk, but extended to 64 MBytes RAM. It's not > > the latest and > > fastest, > > > but i kind of like the fact that it is a very quiet machine.. > > > > > > Unfortunately, the thing has a BIOS setup password. Another > > misfortune is > > the > > > fact that the C-mos battery is dead. These Fujisu PC's seem > > *not* to follow > > > the 'standard' to keep the BIOS password in the C-mos RAM, but they > > seem to > > > store it 'elsewhere'. Clearing the C-mos RAM will -in this > > case- not clear > > > the BIOS password :-( Since the C-mos RAM is unpowered, it > > cannot boot, > > because > > > it needs setup info, but the setup info cannot be set > > because it has a BIOS > > > password... Is there any way to get this machine 'unlocked'? > > > > > > bye, > > > > > > Peter Faasse > > > > > > > > > > > > -- > > > Author: Faasse, P.R. > > > INET: [EMAIL PROTECTED] > > > > > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > > > San Diego, California -- Mailing list and web > > hosting services > > > > > --------------------------------------------------------------------- > > > To REMOVE yourself from this mailing list, send an E-Mail message > > > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > > > the message BODY, include a line containing: UNSUB CHIPDIR-L > > > (or the name of mailing list you want to be removed from). You may > > > also send the HELP command for other information (like subscribing). > > > > > > > > ========================================================== > > ====== > > > Deze e-mail is door E-mail VirusScanner van Planet Internet > > gecontroleerd > > op virussen. > > > Op http://www.planet.nl/evs staat een verwijzing naar de > > actuele lijst waar > > op wordt gecontroleerd. > > > > > > ______________________________________________ > > > > Hoeben Electronics Phone: +31 6 51590081 > > Ronkert 44 Fax: +31 13 5096025 > > 5094 EW Lage Mierde Private: +31 13 5096200 > > The Netherlands E-mail: [EMAIL PROTECTED] > > http://www.hoeben.com > > ______________________________________________ > > > > -- > > Author: Pieter Hoeben > > INET: [EMAIL PROTECTED] > > > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > > San Diego, California -- Mailing list and web hosting services > > --------------------------------------------------------------------- > > To REMOVE yourself from this mailing list, send an E-Mail message > > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > > the message BODY, include a line containing: UNSUB CHIPDIR-L > > (or the name of mailing list you want to be removed from). You may > > also send the HELP command for other information (like subscribing). > > > > > > > > -- > Author: Faasse, P.R. > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB CHIPDIR-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- Author: <[EMAIL PROTECTED] INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
