Radeon 9250 Flashing Question

chikorita157

Well-known member
I finally managed to move the resistors (or rather, replace them since I lost the two when I tried to remove them and move them), and it seems to work in Mac OS X with a reduced ROM. However, it only shows a blue screen when booted with Mac OS 9.

The question is, do you need a full size ROM flashed to make it work under Mac OS 9. Also, can you flash a blank ROM chip directly with Graphicellerator or do you need a ROM flasher tool,

The card I'm using is a Sapphire Radeon 9250 256 MB PCI, which recognizes itself as a 128 MB one.
 

Byrd

Well-known member

This site says you might need some edited drivers for OS 9, and the ROM download page refers to some issues with OldWorld G3 or need for a different ROM. The provided ROMs for these cards are usually best flashed over on a PC if you can using ATIFlash, assuming it is identified with the resistor mods still.

More links



 

chikorita157

Well-known member
I soldered the resistors correctly and used the Tome ROM. I installed the 9250 drivers, but it was in a regular PCI slot rather than the 66 MHz.

Maybe I’ll try putting it in the dedicated slot, as the video card works under Mac OS X even with a 3D program. May be just a conflict with the original PCI Radeon GPU.
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chikorita157

Well-known member
I tried the 66 MHz slot, it only shows a grey screen and won't boot into Mac OS 9. This seems to be only the issue with Mac OS 9, card works in OS X. I think it's the reduced ROM as I have the 9250 mod drivers installed. Can try another one, but I think I'm going to find a bigger ROM chip and solder a new one.

The question is, if I replace the ROM chip, can I flash it on a computer, or I need a programmer?
 

Byrd

Well-known member
Both, but best using DOS ATI flashing tool. Good it works in OS X, how is the performance?
 

chikorita157

Well-known member
Both, but best using DOS ATI flashing tool. Good it works in OS X, how is the performance?
I’ll go grab a 128k ROM. I have to go and dig out the floppy drive and flash it on the Pentium III PC. Desoldering the old ROM shouldn’t be that bad since I have the Hakko hot tweezers.
 

V.Yakob

New member
I’ll go grab a 128k ROM. I have to go and dig out the floppy drive and flash it on the Pentium III PC. Desoldering the old ROM shouldn’t be that bad since I have the Hakko hot tweezers.
Did you manage to flash it so that it was displayed in 256 mb?
What firmware did you use?
 

DarthNvader

Well-known member
Are
I finally managed to move the resistors (or rather, replace them since I lost the two when I tried to remove them and move them), and it seems to work in Mac OS X with a reduced ROM. However, it only shows a blue screen when booted with Mac OS 9.

The question is, do you need a full size ROM flashed to make it work under Mac OS 9. Also, can you flash a blank ROM chip directly with Graphicellerator or do you need a ROM flasher tool,

The card I'm using is a Sapphire Radeon 9250 256 MB PCI, which recognizes itself as a 128 MB one.
Are you sure you have the correct ATI ROMXtender extension installed in Mac OS 9?

The reduced ROM was reduced by removing the 'NDRV' or Native Device Driver, both OS 9 and OS X will need a disk base 'NDRV' for the card to function in the Mac OS, this is what the ATI ROMXtender is, it's a disk based 'NDRV'.
 
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