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   comp.lang.asm.x86      Ahh, the lost art of x86 assembly      4,675 messages   

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   Message 3,912 of 4,675   
   wolfgang kern to persky03@nospicedham.gmail.com   
   Re: Restore BIOS to factory settings usi   
   22 Jul 19 07:30:33   
   
   From: nowhere@nospicedham.never.at   
      
   On 21.07.2019 21:32, persky03@nospicedham.gmail.com wrote:   
   > Hello,   
   > I`m beginner assambly programmer.I would like to know how to restore BIOS to   
   factory settings using programming. I read the forums and try to find a   
   solution, unfortunately unsuccessfully.   
      
   there are tiny buttons on recent motherboards:"RESET/CMOS-CLR".   
   older PCs had a jumper near the CMOS battery (lift it for a second).   
   very old machines need a temporary remove of the battery.   
      
   > Has anyone from this forum ever done anything like that? Maybe it is   
   possible to simulate "no CMOS batteries"? And this way you can restore BIOS? I   
   would like to know how to program it.   
      
   I haven't seen any software simulation for this, and I hope hardware   
   remain stubborn on this matter in future too.   
      
   There are (device-specific) bits in the flash-ROM control-port which   
   could be connected to a (fictive yet) CMOS=RESET-gate.   
      
   But it may be good advice to not play around with the Flash-Rom as long   
   you're not absolutely sure to know all details about your hardware.   
   __   
   wolfgang   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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