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   OS2      Fidonet International OS/2 Conference      3,371 messages   

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   Message 1,400 of 3,371   
   Lars Erdmann to All   
   Re: Strange trap in OS2KRNL on boot - so   
   26 Nov 10 08:28:07   
   
   Firefox/4.0b8pre SeaMonkey/2.1b2pre   
   jhg2?IC4DY[3AA]aK5M;^FM2   
   From: Lars Erdmann    
      
   Peter Flass wrote:   
   > On 11/25/2010 2:38 AM, Lars Erdmann wrote:   
   >> Hallo,   
   >>   
   >> in my BIOS I have now DISABLED "Quick Power On Self Test". That seems to   
   >> initialize memory   
   >> (at least the relevant parts of it) in a way that the trap below does   
   >> not seem to occur any more.   
   >> Seems that PMSHELL.EXE is using some uninitialized variable that often   
   >> enough has a value   
   >> that does not hurt but sometimes it does.   
   >> BIOS writing some byte pattern to memory seems to cure the problem.   
   >   
   > I ran into this in a System/7. Uninitialized memory had bad parity. I was   
   writing a small machine-language program where somehow the logic made it   
   simpler to load a variable and *then* test to see if it was valid. It took me   
   a while to   
   > identify the problem.   
   I forgot that one. Yes, maybe just "toggling" the bits in memory   
   gives memory the necessary "slap on the head" to work properly.   
   Admittedly, I have some rather cheap components in this machine,   
   in particular the main memory. It is so cheap, I think it does   
   not even have the ECC feature.   
      
   Lars   
      
   --- Internet Rex 2.31   
    * Origin: Arcor (1:261/20.999)   

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