X800 fuses data for unlocking

[Sibic]

I think I've figured out more about what some of the fuses data means. For CONFIG_ROM_FUSES when it is in a form like 0x26X, 0x86X, or 0xA6X:

When X = 0, no pipeline quads are locked in the bios (bios is set to 16 pipelines)
When X = 1, 1 pipeline quad is locked in the bios (bios is set to 12 pipelines)
When X = 2, 2 pipeline quads are locked in the bios (bios is set to 8 pipelines)

This seems to be the case for a lot of bioses I've seen, mainly for R423, R430, and R480. Now, just because you have a zero there, that doesn't mean you have 16 pipelines, it just means that your bios is set to that.

For example, in all cases I've seen a zero there on Powercolor X800 GT's, but that card only has 8 pipelines. However, if you flash that bios to a 16 pipeline card (using the modified flashrom or atiflash -newbios), you will still have 16 pipelines. For example, if you flash it to a GTO2 that hasn't been unlocked to 16 yet (still has 12 pipelines), the Powercolor X800 GT bios will unlock it to 16.

So the Powercooler X800GT bios unlocks pipes? Could it work on a Sapphire X800GTO?! i have 0x261 on my Config_Rom_Fuses.

 

[janjansen]

what card is that x700?

sorry, MSI rx800-se

 

[ryboto]

Remove cooler, on the core there are 4 yellow dots like that:

o....o
..o..-
o....o

notice the minus sign, it is a laser cut between two dots, your goal is to connect those dots.

On my card those dots were covered with some thin substance, so i simply used needle to gently rub it of. Then use some conductive pen or pencil (i used some silver conductive gel or whatever they gave me at hardware shop, it costed like 3$) and connect dots around laser cut not filling laser cut itself. Thats all. Now you only need to put back some thermal paste and cooler.

Now your card should perform with 12 pipes. In case pipes are bad you can always clean that bridge you made (so make it carefully at the first place).


EDIT:
there is pic of mycard:


you can notice red dot on upper right corner of the core with 4 yellow dots arround it, also laser blurs in between them. Unfortunately I never took pic of moded core.

I did that mod...only, i didn't go around the laser cut, the card still functions. I've got an X800pro non vivo, oc's pretty high, and stays cool. The conductive ink should still be there, but if the key is to go around the laser cut, then i guess i should go back and redo it...it's been almost a year since then..

 

[ShadowFlare]

I think I've figured out more about what some of the fuses data means. For CONFIG_ROM_FUSES when it is in a form like 0x26X, 0x86X, or 0xA6X:

When X = 0, no pipeline quads are locked in the bios (bios is set to 16 pipelines)
When X = 1, 1 pipeline quad is locked in the bios (bios is set to 12 pipelines)
When X = 2, 2 pipeline quads are locked in the bios (bios is set to 8 pipelines)

I found where this was stored in the bios and used a hex editor to change it. I was exactly right with this, it does affect what pipelines are locked/unlocked in the bios. In addition to those values, when X = 3, 3 pipelines quads are locked in the bios, so you end up with only 4 pipelines left.

 

[ryboto]

I noticed a lot of people are using pci-x cards....am I excluded from all this pipeline fun?? i've got an x800pro non-vivo, as stated previously, and it looks like, based on the conclusions made about the fuses, that i've unlocked my pipes...I've done the hard mod, and traced the link where the laser cut was made. I have also tried to flash the thing, but I don't recall using a modified flashrom...is there a special flashrom i'm supposed to use?? Cause when i did it, i used the latest flashrom on this site, and used rabit to remove the vivo, and flashed it to an xt. The thing worked fine, but the pipes didn't unlock. What's a guy to do?

 

[SPHERE]

sorry, MSI rx800-se

no chance of 16 pipes but maby 12

 

[SPHERE]

I noticed a lot of people are using pci-x cards....am I excluded from all this pipeline fun?? i've got an x800pro non-vivo, as stated previously, and it looks like, based on the conclusions made about the fuses, that i've unlocked my pipes...I've done the hard mod, and traced the link where the laser cut was made. I have also tried to flash the thing, but I don't recall using a modified flashrom...is there a special flashrom i'm supposed to use?? Cause when i did it, i used the latest flashrom on this site, and used rabit to remove the vivo, and flashed it to an xt. The thing worked fine, but the pipes didn't unlock. What's a guy to do?

the pipes are locked on the bottom of the core via lasercuts and are almost certanly bad..

 

[ryboto]

the pipes are locked on the bottom of the core via lasercuts and are almost certanly bad..

i thought the laser cut was on top?

 

[SPHERE]

i thought the laser cut was on top?

top and bottom the ones on top are the only ones worth moding though so it's all good cause the pipes locked on the botom ones are bad anyways

the lasercuts on the botom are cut before the core is marked to be used on any model they are there to perminatly disable bad pipes

 

[ryboto]

how can you be sure the bottom is cut? based on what atitool says??

 

[Neocal]

Another powercolor x800GT 256MB...

Thanks guys for your effort to try understand the pipes unlock mechanism.
If i can help you just say it.

Neocal.

 

[SPHERE]

^you could try for 12 pipes but 16 is out of the question (use the moded flashrom and a x850 xt pcie bios )

btw thx for posting all the needed info

how can you be sure the bottom is cut? based on what atitool says??

yes

 

[.:DemiaN:.]

I have a PowerColor X800GT 256Mb DDR3 PCI-E and i dont have "fuses", i dont understand
Please help me

PD: Sorry for the bad english, im from Argentina and here the people use other language

Anyone can help me???

 

[ryboto]

yes

What part of atitool tells me i have a laser cut below the chip?

 

[mrvomit]

Originally Posted by ShadowFlare
I think I've figured out more about what some of the fuses data means. For CONFIG_ROM_FUSES when it is in a form like 0x26X, 0x86X, or 0xA6X:

When X = 0, no pipeline quads are locked in the bios (bios is set to 16 pipelines)
When X = 1, 1 pipeline quad is locked in the bios (bios is set to 12 pipelines)
When X = 2, 2 pipeline quads are locked in the bios (bios is set to 8 pipelines)

I found where this was stored in the bios and used a hex editor to change it. I was exactly right with this, it does affect what pipelines are locked/unlocked in the bios. In addition to those values, when X = 3, 3 pipelines quads are locked in the bios, so you end up with only 4 pipelines left.

now that's is interesting.

So do you mean you can unlock pipes just by modifying that value ,instead to use a modded flash?
You got the unlock by Hex-editing?
So..Could that be a way to reduce risk of a wrong bios flash?

great work shadowflare

 

[Neocal]

How to view special registers

Anyone can help me???

You must hold the shift key before press the settings button in ati tool to view these special registers....

Neocal.

 

[ShadowFlare]

now that's is interesting.

So do you mean you can unlock pipes just by modifying that value ,instead to use a modded flash?
You got the unlock by Hex-editing?
So..Could that be a way to reduce risk of a wrong bios flash?

great work shadowflare

It's not really that useful, since you can get the same effect without hex editing by just flashing the bios using methods that have been posted. Someone could ask the author of RaBiT to add that feature, though. That would make it easy for others to do the mod on the number of pixel pipelines. Especially since just modifying only that value is not all that should be done; there are CRC values, checksums, or something similar that need to be changed, too. I have found that if you modify that value, then open and save the bios in RaBiT, it will fix those things, though.

There is one reason that it was useful for me, though. By modifying that I was able to reduce the pipelines on my card so I could test it at X800 GT speeds.

 

[MrW]

I have a Sapphire X800GTO with a 480 core:
http://img407.imageshack.us/my.php?image=gto7bt.jpg
Is unlocking possible or am I out of luck? Thanks.

 

[ShadowFlare]

I have a Sapphire X800GTO with a 480 core:
http://img407.imageshack.us/my.php?image=gto7bt.jpg
Is unlocking possible or am I out of luck? Thanks.

Your bios is set to 12 pipelines, but based on the fuses data, it doesn't look like you will get any more pipelines if you flash the bios.

 

[MrW]

Is there a hard mod I could do? Can the pipes be physically re-connected, bypassing where they are cut?

 

[Sibic]

I have a Sapphire X800GTO with a 480 core:
http://img407.imageshack.us/my.php?image=gto7bt.jpg
Is unlocking possible or am I out of luck? Thanks.

What kinda cooling do you have on your card with thoose speeds? And whats the temperature?

 

[MrW]

A Zalman Copper cooler.
http://img220.imageshack.us/my.php?image=tempm9od.jpg

 

[.:DemiaN:.]

Here is a pic of my card, any chance of mod the videocard??

 

[mrvomit]

It's not really that useful, since you can get the same effect without hex editing by just flashing the bios using methods that have been posted. Someone could ask the author of RaBiT to add that feature, though. That would make it easy for others to do the mod on the number of pixel pipelines. Especially since just modifying only that value is not all that should be done; there are CRC values, checksums, or something similar that need to be changed, too. I have found that if you modify that value, then open and save the bios in RaBiT, it will fix those things, though.

There is one reason that it was useful for me, though. By modifying that I was able to reduce the pipelines on my card so I could test it at X800 GT speeds.

but could be that be a safer way ,respect to a bios flash?

Speaking for me:
i don Have a pci videocard,and i could'nt resolve a bad bios -flash,
that's why i'm not tryng,though deep tempted.

if making that manually ,would be it safer ,what ya think?

 

[Sibic]

A Zalman Copper cooler.
http://img220.imageshack.us/my.php?image=tempm9od.jpg

Im ordering that as i type this