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Author Topic: 2600XT Bios Recovery Help Please  (Read 1420 times)

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Posts: 10

« on: February 19, 2017, 09:11:33 PM »


I was trying to recover a 4870 that did not like the bios I created for it. I used the 2600XT from my 2008 Mac Pro as the primary card and the 4870 as the secondary card. I verified that the 4870 was device 1 using the command "atiflash -i". So I used the command "atiflash -p -fs -fp 1 4870.rom" to flash the 4870 back to it's original bios and that did work. However, the 2600XT will no longer display video. In a Windows system, it will boot all the way into Windows but the screen remains black.

After much digging around I found an ancient Nvidia card to use as the primary card with the 2600XT as the secondary card.

Using the command "atiflash -i" I get the following:

    adapter    bn    dn    dID              asic            flash         romsize      test     bios p/n
    ====     ==   ==   ==            =====      =====      ======   ===    =====
    0             04    00    9500       RV630/M76     R600 spi       10000        fail          -

With the command "atiflash -ai" I get:

    Adapter   0   (BN=04, DN=00, PCIID=95801002, SSID=95801002)
        Asic Family : RV630/M76
        Flash Type : R600 SPI (64kb)
        No VBIOS

I downloaded what I believe to be the original 2600XT bios, one provided to another user by MacVidCards in another thread, it is 60k. However, when I try to flash that (or a few others) to the 2600XT using the same command "atiflash -p -fs -fp 0 2600XT.rom" it comes back with the error "failed to read rom"

My question: Does anyone know how to get past the "failed to read rom" error? If I need to replace the bios chip, does anyone have a picture showing which of the many 8 legged chips is the bios chip?

Any help would be appreciated. Thank you in advance.
« Last Edit: February 20, 2017, 06:20:27 AM by cornflakes1023 » Logged
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