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Saturday, November 7, 2009

How to obtain the DSDT from your laptop

There are many ways to rip the DSDT out of the laptop BIOS.
If there is a BIOS editor it is possible to rip out the .AML file.
However below is an easy way to obtain the DSDT AML file.
First download and install a powerful system BIOS viewing utility called RW-Everything.

Next launch the program.
Click the "ACPI" picture menu button just below the menu bar.

It will say building DSDT and you have to wait for a while.

Once it is ready, Click on the DSDT Tab and press Save as Binary (The Picture of the Floppy Disk with a "bin" word on it or Shift + F2)

Name it as DSDT.AML

This will be the AML file you will decompile to readable text by a ASL Compiler.

If you want me to check it you can upload it on a file sharing site (please upload it on a easy to download site like mediafire etc no rapidshare please) I will check the DSDT syntax.

4 comments:

Anonymous said...

This file contains iasl output, which gives a few errors on compile. This guy seems to have worked on it, but I can't seem to replicate it- http://ubuntuforums.org/archive/index.php/t-473996.html If you could just have a look, I'd be very grateful.

http://www.mediafire.com/?zgtzkh0ytmt

Admin said...

Just need to return Zero at corresponding bracket points especially after a "IF" and "WHILE" it is more of a formality standard by IASL than any other reasons.

Admin said...

Method (BTST, 0, NotSerialized)
{
If (\_SB.ECOK)
{
Acquire (\_SB.PCI0.LPCB.EC0.MUT1, 0xFFFF)
Store (\_SB.PCI0.LPCB.EC0.KSWH, Local0)
XOr (Local0, 0x01, Local0)
Store (\_SB.PCI0.LPCB.EC0.BTHE, Local7)
Release (\_SB.PCI0.LPCB.EC0.MUT1)
If (Local0)
{
ShiftLeft (Local7, 0x06, Local6)
ShiftLeft (Local7, 0x07, Local7)
Or (Local7, Local6, Local1)
Or (Local0, Local1, Local2)
Return (Local2)
}
Else
{
Return (Zero)
}

}
Return (Zero)
}

Method (EVNT, 1, NotSerialized)
{
While (VZOK)
{
If (LEqual (VZOK, 0x01))
{
Store (Arg0, VZOK)
Notify (\_SB.VALZ, 0x80)
Return (Zero)
}
Else
{
Sleep (0x05)
}
}
Return (Zero)
}

Rohit said...

I tried, man, but it still gives me errors on compile. Could you possibly compile it? I've attached the dsl file this time-

http://www.mediafire.com/?dwnhenz3tem