Re:XpertVision Radeon HD 2600 PRO, and tweaked BIOS update? - 2007/12/03 01:29Thank you Siggi for editing the BIOS for me. I flashed the card with no problem. Now I am running second BIOS but I have a small problem. After installing the drivers for the card and a restart the PC is giving me error as the ATI driver is not compatible with the card. I am not shure how to fix this. Please advice. Thank you...
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RAH
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Re:XpertVision Radeon HD 2600 PRO, and tweaked BIOS update? - 2007/12/03 04:39Still not correct. It flashes fine. Output on all lines. But the drivers won't install correctly. Question, in my BIOS the clocks for the card are listed in the long name, meaning 600E/500M. Would it make sense to change that too?
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Siggi
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Re:XpertVision Radeon HD 2600 PRO, and tweaked BIOS update? - 2007/12/03 09:14Sorry, yes I mean the 16-bit checksum. If you mean the product name section, then no. Which changes did you make? The checksum of your original BIOS is 3300, Hex value. Right? And the checksum of your modified BIOS is? Is there a big different? In ideal case the values for the checksum correction should be in the section between 0x24 and 0x2D. Is this section insufficient?
There are problems with both BIOS? Or just with the second? The checksum of your original BIOS is Hex = 9800 / Dez = 38912 and for example the checksum of the first modified BIOS with changed GPU voltage was Hex = 9AA8 / Dez = 39592. Difference is 680. The uncritical section between 0x24 and 0x2D was insufficient, therefore I used the area between 0XE0-0xEF and 0xF0-0xFF. Maybe, that caused the problems. I must find another solution.
Anyway, I hope you have understood where the problem is. As example, for my modified BIOS with changed GPU voltage, I needed just to change three bytes in the section 0x24 and 0x2D to correct the checksum and it runs fine. It shouldn't be necessary to reinstall the drivers at that kind of changes.
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Siggi
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Re:XpertVision Radeon HD 2600 PRO, and tweaked BIOS update? - 2007/12/03 09:51amihov wrote: After installing the drivers for the card and a restart the PC is giving me error as the ATI driver is not compatible with the card. I am not shure how to fix this. Please advice. Thank you... Here is maybe a solution. I have lifted up the voltage to 1.3V. To correct the checksum I just have needed one byte. So the product name section now remains unchanged. Test it, but I don't know if possibly this voltage is slightly to much? You have to make up your mind.
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RAH
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Re:XpertVision Radeon HD 2600 PRO, and tweaked BIOS update? - 2007/12/03 12:02Original BIOS checksum is indeed 3300, the modified BIOS checksum is also 3300, changed in 0x24/0x2D. I have overclocked from 600/500MHz to 750/580MHz stable. I have tried setting 650/500MHz, 700/500MHz and 750/500MHz speeds. And with Catalyst to 800/500MHz and 800/600MHz. Haven't tried any voltage tweaks yet, though only 1.10V on my card. Maybe some voltage tweak to get a little more from the memory.
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eDaniel
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Re:XpertVision Radeon HD 2600 PRO, and tweaked BIOS update? - 2007/12/03 13:17Siggi wrote: As example, for my modified BIOS with changed GPU voltage, I needed just to change three bytes in the section 0x24 and 0x2D to correct the checksum and it runs fine. It shouldn't be necessary to reinstall the drivers at that kind of changes. Yeps, right. This has been tested. No need to change drivers. I know where the problem is. I guess the PRO BIOS is the same as XT BIOS because I'm talking for it, the XT version. On offset AA3E is core clock and on AA42 is the memory clock. So, don't modify these values. I don't know if Catalyst Control Center calculates some kind of CRC for this area but if you change them you'll get unrecognized card. I was modifying almost everything and there is no problem at all until now when I try to modify this.
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amihov
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Re:XpertVision Radeon HD 2600 PRO, and tweaked BIOS update? - 2007/12/03 20:47Hi Siggi. Thank you for the reply. I am using the firstBIOS and I had no problem. Now I will test the 3rd BIOS. I just wonder if it is possible to have too much voltage. I manage to push the card up to 839MHz it runs stable for about 40 min and then black screen. I know that the GPU temperature is constant around 58-59°C when loaded. The voltage increase made the card work hard and more stable. I think that even 1.3V won't be a bad thing. I just need to try different cooling solutions for the card. Maybe put a big fan to blow directly on the card. Thank you!
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Mavke
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Re:XpertVision Radeon HD 2600 PRO, and tweaked BIOS update? - 2007/12/03 21:06Siggi wrote: If you edit some values in your Radeon HD 2600 BIOS it is not sufficient to correct the checksum. The checksum is just simply the sum of all bytes, but there are still other algorithms which protect this file. A complicated story and it is better that we are spare details at this point. Well since this thread is becoming so un-organized, can you please all make your posts so that everyone can understand them? And write clear sentences? Currently I have updated quite some posts so that they make sense to everyone interested person with a bit of knowledge... If that can't be done then this thread will become useless. Also Siggi, ever thought about creating your own BIOS tweak and/or editor program? Cause really that would it all make a lot easier...
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RAH
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Re:XpertVision Radeon HD 2600 PRO, and tweaked BIOS update? - 2007/12/03 22:08Mavke wrote: Currently I have updated quite some posts so that they make sense to everyone interested person with a bit of knowledge... If that can't be done then this thread will become useless. Okay, so that is where my posts have gone. Yep, you have combined em and really made it useful to me. Thanks!
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Ostoja
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Re:XpertVision Radeon HD 2600 PRO, and tweaked BIOS update? - 2007/12/03 22:45eDaniel wrote: I know where the problem is. On offset AA3E is core clock and on AA42 is the memory clock. So, don't modify these values. I don't know if Catalyst Control Center calculates some kind of CRC for this area but if you change them you'll get unrecognized card. I use ATI Tray Tools and display driver only, so I don't think that's a Catalyst issue. It has to be hardware level issue, some sort of security mechanism. I need to ask something but first let me explain what I intend to do. I want to change all the clocks directly in BIOS, so that there's no need for Windows overclocking tools. If I change clock values for all power states except for that offset you mentioned, do I still need to manually overclock the card to desired values or will the card read the edited values from BIOS, and set them automaticaly? I believe that you already tried this. Thanks in advance.
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ASUS 9800GTX+ (DK) PCIe 512MB - Rev 01
