Help in better understanding BIOS

Discussion in 'BIOS Mods' started by DonJohn, Mar 22, 2012.

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  1. en4rab

    en4rab MDL Novice

    Oct 27, 2009
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    #41 en4rab, Mar 25, 2012
  2. DonJohn

    DonJohn MDL Junior Member

    Jan 16, 2010
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    #42 DonJohn, Mar 25, 2012 (OP)
  3. gabiz_ro

    gabiz_ro MDL Member

    Feb 2, 2010
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    #43 gabiz_ro, Mar 25, 2012
  4. redroad

    redroad MDL Guru

    Dec 2, 2011
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    #44 redroad, Mar 25, 2012
  5. gabiz_ro

    gabiz_ro MDL Member

    Feb 2, 2010
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    #45 gabiz_ro, Mar 25, 2012
    Last edited: Mar 25, 2012
    Maybe my english ...
    I ask what type is motherboard flash IC. MXIC,Winbond, ST series
    Not what is a flash chip.
     
  6. DonJohn

    DonJohn MDL Junior Member

    Jan 16, 2010
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    #46 DonJohn, Mar 25, 2012 (OP)
  7. Brainsuck

    Brainsuck MDL Addicted

    Oct 9, 2009
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    #47 Brainsuck, Mar 30, 2012
    Last edited: Mar 30, 2012
    to force ami bios you need to power on ctrl-alt-home at the same time usb or floppy will light up 3 or 4 min it is done reboot brick this one two or three times oh use a ps2 keyboard not usb
     
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  8. DonJohn

    DonJohn MDL Junior Member

    Jan 16, 2010
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    #48 DonJohn, Apr 10, 2012 (OP)
  9. gabiz_ro

    gabiz_ro MDL Member

    Feb 2, 2010
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    #49 gabiz_ro, Apr 10, 2012
    Better try to build simple LPT interface, and try,maybe you are lucky enough that MX25L3206 is supported by spipgm or flashrom.
    4 resistor 1 capacitor,some wires and 3.3V power easy enough.
     
  10. DonJohn

    DonJohn MDL Junior Member

    Jan 16, 2010
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    #50 DonJohn, Apr 10, 2012 (OP)
    Is it really that easy? Do you have a schematic of the board? And what about the software needed?

     
  11. gabiz_ro

    gabiz_ro MDL Member

    Feb 2, 2010
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    #51 gabiz_ro, Apr 10, 2012
    Last edited: Apr 10, 2012
  12. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    #52 LatinMcG, Apr 10, 2012
    Last edited: Apr 10, 2012
    first backup (if original).. or flash it then compare files .. if backup doesnt match.. resistors arent right or power is noisy.
    the orange cable in power supply should be 3.x which is perfect .. i tried 3.0 via 2 AA batteries and wasnt enough.
     
  13. DonJohn

    DonJohn MDL Junior Member

    Jan 16, 2010
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    #53 DonJohn, Apr 11, 2012 (OP)
    Thank you guys!!! I may give it a try...

    One question: In the schematics, it mentions a 1 mF capacitor between +3.3V and GND. Is that value correct???? It seems so high!!!
     
  14. gabiz_ro

    gabiz_ro MDL Member

    Feb 2, 2010
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    #54 gabiz_ro, Apr 11, 2012
    is 1uF micro Farad.
    But you can use any value in 1-100 uF range with no problem
     
  15. LatinMcG

    LatinMcG Bios Borker

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    #55 LatinMcG, Apr 11, 2012
    i didnt use cap and it worked... depends on how noisy power is.
     
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