[REQUEST] Asus PCH-DL (S:2x604 C:i875) BIOS Unlock

[chey229]

Hello!

The Intel 875P chipset does not support DDR200 (PC1600) officially. However, DFI, MSI, Shuttle etc. created motherboards which support these speeds. Is there any way to force an Asus board to start at 400 MHz FSB and DDR200 (instead of DDR266) speed?

The problem is the following: I have an Asus PCH-DL and an NCCH-DL board. I would like to use two SL79V monsters in them because of the impressive 4 MB L3 cache. Unfortunately, the CPU's originally use 400 MHz FSB and consequently the boards start the memory at DDR266 speed. Since the boards initialize the CPU's at their original 30x multiplier, there is no way to start them at 533 MHz FSB and DDR266, even if I reduce the multiplier in the BIOS (since the reduced multiplier is set after the CPU's were initialized...).

I can set the FSB with SetFSB, Clockgen, etc., however, the 3:4 ratio of FSB:RAM prohibits the reach of 800 MHz FSB, because the memory controller of the i875P northbridge overheats when memory clock exceeds DDR400, and 2 CPU's, as well as both memory channels are in use.

The BIOSes of both boards (can be found here, Award BIOSes) contain 3 hidden memory speeds. One of them has the length of 6 characters (like DDR266, DDR333, DDR400), so I think it could be some kind of experimental or unofficial setting. Do you think that it could be DDR200? Does someone have any experienses?

Thanks for the help in advance.

Best regards,
Dani

P.s.: Though in some cases a pair of 3600 MHz Irwindales would perform some percent better than the SL79V's at ~3300 MHz, however, they would consume much more power which I do not prefer.

[ivanmazepa]

Hello guys.

Please add microcodes form Asus NCCH-DL MOBO to PCH-DL BIOS, and unlock CPU/MEM/CH voltage options
Whant to test all range CPU, and report it to HW-BOT

10tx!!

BIOS

https://www.asus.com/ru/Commercial-Serve...ons/PCHDL/
https://www.asus.com/ru/Commercial-Serve...ns/NCCHDL/

[DeathBringer]

Copy CBROM196, BIOS of NCCH-DL with name NCCH-DL.BIN, BIOS of PCH-DL with name PCH-DL.BIN and empty file NCPUCODE.BIN to one folder.
And run:

Code:

cd <path to folder with files>
CBROM196 NCCH-DL.BIN /nc_cpucode NCPUCODE.BIN
attrib +R NCPUCODE.BIN
CBROM196 PCH-DL.BIN /nc_cpucode NCPUCODE.BIN

[ivanmazepa]

Copy CBROM196, BIOS of NCCH-DL with name NCCH-DL.BIN, BIOS of PCH-DL with name PCH-DL.BIN and empty file NCPUCODE.BIN to one folder.
And run:

Code:

cd <path to folder with files>
CBROM196 NCCH-DL.BIN /nc_cpucode NCPUCODE.BIN
attrib +R NCPUCODE.BIN
CBROM196 PCH-DL.BIN /nc_cpucode NCPUCODE.BIN

That replase codes? Or add them?

[DeathBringer]

Replace

[ivanmazepa]

Replace

+/-
rom.by says that method dont works
(try it later, now i dont have a mobo with same bios port)

Someone try mod this codes?? 
On some SIS651/645 mobo, when i'am trying launch MB with Prescott (unsupported by most MB) CPU, i get "unknown CPU error" or "Intel P4 1.8Ghrz Unknown CPU" . Is this "CPU" record a microcode? I can modify them?

[DeathBringer]

+/-
rom.by says that method dont works

OK. Ask for help there.

(try it later, now i dont have a mobo with same bios port)

No mobo - no help.

i get "unknown CPU error" or "Intel P4 1.8Ghrz Unknown CPU" . Is this "CPU" record a microcode? I can modify them?

I think it's not microcode problem.

[ivanmazepa]

Copy CBROM196, BIOS of NCCH-DL with name NCCH-DL.BIN, BIOS of PCH-DL with name PCH-DL.BIN and empty file NCPUCODE.BIN to one folder.
And run:

Code:

cd <path to folder with files>
CBROM196 NCCH-DL.BIN /nc_cpucode NCPUCODE.BIN
attrib +R NCPUCODE.BIN
CBROM196 PCH-DL.BIN /nc_cpucode NCPUCODE.BIN

Doont work, FSB133 - POST 26-25 , FSB200 - reboot loop

modded bios in attachment

[ivanmazepa]

i get "unknown CPU error" or "Intel P4 1.8Ghrz Unknown CPU" . Is this "CPU" record a microcode? I can modify them?

I think it's not microcode problem.

no, its microcode/bios problem

Some SIS651 mobos suports prescott

PS
i fucked with HotSwaping / UniFlash / Flashrom 4 hours, think twice next time please