Compiling ACPI v2.0 driver for Windows XP SP3 and Windows 2003 SP2 (x32/x64)

[Damnation]

@Dietmar

Good luck!

[Dietmar]

@Damnation

Yessssaaa

grub2 works for to upload any DSDT table

Dietmar

[Damnation]

@Dietmar

Nice!

Now we need to find where the Processor definitions are.

[Dietmar]

@Damnation

Oh, we are all blind as much as possible.

I just check the asl.exe Tool V5 from Microsoft.

It works also, IF you dump and modify the DSDT files from running XP.

If you are as "clever" as me, extract DSDT from Bios, modify it and upload it then,

with any of the 3 methods you are forced to flash the Bios with this DSDT

or you get always this acpi.sys error.

Really crazy, I spend hours and hours with flashing Bios

only because of this mistake^^

Dietmar

PS: Here is the asl V5 tool. It works, I just test^^

https://ufile.io/rtk8elu3

 

[Damnation]

@Dietmar

Thanks.

are you not able to make dumps of your ACPI tables?

[Dietmar]

@Damnation

Here they are, from the Asrock z690 Extreme, which is for me the most most XP friendly board.

I use latest iasl from March 2022 and extract under win10

Dietmar

https://ufile.io/piqd5ke6

 

 

[Damnation]

@Dietmar

Thanks!

I see in dsdt.dat your processors are defined with ACPI0007 ID but curiously no ACPI0010 container.  I see ssdt.dat also has some external dependencies to dsdt.dat for processor definitions.

Just to confirm, was this board giving you CPU power issues like me? or was it a different board? or were you having a different problem with this board?

Edited August 16, 2022 by Damnation

[Dietmar]

@Damnation

Yes, this is the board which consumes a lot of power for nothing.

The same is true for all the other z690 boards, which I have.

But this board is the most XP friendly board and stable.

When you have mood for, I am happy when you make a try for to modd the DSDT files

and I will report then

Dietmar

PS: Now we 3 possibilities to upload acpi tables.

[Damnation]

@Dietmar

OK, Here is my first attempt at an ACPI mod for you.

Load both of the AML files in the MOD folder. The order may or may not be important I'm not sure - i.e if DSDT then SSDT does not work then try the other way around.

https://ufile.io/fvbk5kfg

[Damnation]

@Dietmar

D'oh! I made a typo in the modded SSDT!

new fixed version.

https://ufile.io/sj2anz5z

[Dietmar]

@Damnation

Waaaoohhh

, now we need Tutorial, how to make this

Dietmar

 

PS: Power consumption goes down from 44 Watt --> 1.6 Watt.

 

This I like a lot, because in this winter here in germany people will die because no money for HEATING!

 

Asrock Extreme z690 with 12900k cpu

before DSDT mod from @Damnation

 

after

 

Edited August 16, 2022 by Dietmar

[Damnation]

@Dietmar

1.6 watts! Wow! and I thought 44 watts on my 5950x was good.

The mod is not that complex, just compare original and modded tables, there isn't all that much of a difference.

Now lets hope that @Mov AX, 0xDEAD can code the driver to understand ACPI0007 too.

[Dietmar]

@Damnation

Can you see a difference in the DSDT tables beween the power cores and the "efficient" cores of the 12900k cpu?

The 12900k cpu has 8 Power cores with Hyperthreading, shows 16 "cpus" and 8 efficient cores,

so all together 24, which numbers are NOW shown correct in processors

Dietmar

 

Edited August 16, 2022 by Dietmar

[Damnation]

@Dietmar

All I really know is that deprecated Processor() Opcode is no longer in use in these newer ACPI tables that are giving power issues in XP. My mod removes the existing ACPI0007 processor definition and then reintroduces the old Processor() Opcode that XP's acpi.sys expects.

[Dietmar]

@Damnation

The asl.exe V5 works also.

The advantage from this tool is, that under XP SP3 the modified tables are stored in Registry

and you dont need to upload them always new

Dietmar