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Mac GTX 285 ROM

aqua-mac

By aqua-mac,
in nVidia

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imasmak
imasmak
Posted
Posted

hi aqua-mac

 

i have GeForce GTX 285:

 

but withe big problem !!!

 

see

 

GeForce GTX 285:

 

Chipset Model: GeForce GTX 285

Type: GPU

Bus: PCIe

Slot: Slot-1

PCIe Lane Width: x16

VRAM (Total): 4294965248 MB

Vendor: NVIDIA (0x10de)

Device ID: 0x05e3

Revision ID: 0x00a1

ROM Revision: xx.xx.xx - internal

Displays:

Philips 190CW:

Resolution: 1440 x 900 @ 75 Hz

Pixel Depth: 32-Bit Color (ARGB8888)

Main Display: Yes

Mirror: Off

Online: Yes

Rotation: Supported

Philips 190CW:

Resolution: 1440 x 900 @ 75 Hz

Pixel Depth: 32-Bit Color (ARGB8888)

Mirror: Off

Online: Yes

Rotation: Supported

 

 

the gtx 285 work with 10.3

 

but VRAM (Total): 4294965248 MB = -2048

 

the final cut not work with -2048

 

how fixt -2048

 

pls help me pleeeeees

menaze
menaze
Posted
Posted
the gtx 285 work with 10.3

but VRAM (Total): 4294965248 MB = -2048

the final cut not work with -2048

how fixt -2048

 

pls help me pleeeeees

 

I'm also having this problem with my GTX285 2GB, any program or game that checks the VRAM refuses to work. Tried changing the required VRAM to zero in the plists of the programs, but that doesn't work.

 

I also would like to try injecting a Mac GTX285 ROM with Chameleon RC3 and hoping that it would change the amount of VRAM visible to the system to 1024 MB.

 

The negative 2048 is not really a videocard problem, but a OSX system bug, it's also affecting other software: http://forums.macrumors.com/showthread.php?t=756526

  • 2 weeks later...
awoland
awoland
Posted
Posted
I want to experiment with injecting the efi data at boot, If someone has saved the rom, can they email it to me please. My email is on my website (see sig).

 

Many thanks in advance.

 

Hi, aqua-mac! You can download it from

evga285m.rar (pwd:evga285m)

 

  • 2 weeks later...
aqua-mac
aqua-mac
Posted
  • Author
Posted

Thanks a lot A.Woland and MacGirl for your help. I should have checked back here earlier!! This should allow me to experiment.

 

By the way Macgirl to extract a video rom here are my instructions:

 

 

 

Instructions for Saving The Existing Rom on your Card

 

1. Create a Windows start up floppy disk.

 

2. Download the latest version of NVFLASH utility.

 

3. Copy the two downloaded files onto the floppy disk.

 

4. Place the Floppy into your computer, go into the bios (usually pressing the "Delete" button at startup and make sure the

 

computer is set to boot from your floppy disk drive.

 

5. The computer will boot from the floppy and you will hear the floppy disk being accessed.

 

6. When you get to the A: prompt, type the following;

 

 

 

eg ; nvflash -b save.rom

 

 

 

(leave a single space between as I have above or it will not work)

 

Remove the startup disk & reboot your computer, your rom will have been saved to the floppy disk.

 

 

 

 

Instructions for Flashing a New Rom to your Card

 

1. You need a Windows startup Disk again. If you have not already made one, copy steps 1 to 3 above then copy you new

 

Rom onto the disk as well.

 

 

 

2. Place the Floppy into your computer, go into the bios (usually pressing the "Delete" button at startup and make sure the

 

computer is set to boot from your floppy disk drive.

 

 

 

3. The computer will boot from the floppy and you will hear the floppy disk being accessed.

 

 

 

4. When you get to the A: prompt, type the following;

 

nvflash -4 -5 -6 -j romname.rom

 

(leave a single space between as I have above or it will not work. * romname, needs to be replaced with the actual name

 

of the rom you are flashing eg: nvflash -4 -5 -6 -j 5500.rom )

 

(leave a single space between as I have above or it will not work)

 

If you are flashing a rom such as the special roms above you will get two warnings. You will have to hit the "y" key 3

 

times as the device id and on some the vendor id is changed to nv The screen may go blank while the rom is flash When

 

nvflash has finished, remove the floppy disk and restart your computer. Your screen should burst into life.

 

 

 

 

 

 

What to do if your flash goes wrong. Even if you have no picture, you can bring your card back to life by following this procedure to the letter.

 

 

 

1. Don't panic.

 

Get access to another PC

 

You should have backed up your rom, Yes. Good go to step 3. Well if you didn't, go here & drill down to the

 

manufacturer of your card and download the bios of your graphics card:

 

http://www.mvktech.net/component/option,co...ctfolder/cat,4/

 

 

 

2. Rename the rom to something you remember if needed like:

 

 

 

romname.rom

 

 

 

It must finish with .rom & there must be no spaces.

 

Place this onto a windows boot floppy with the latest version of Nvflash.

 

http://www.softpedia.com/get/Tweak/Video-Tweak/nVFlash.shtml

 

 

 

3. Startup your computer, there will be no picture but don't worry, you are going to do this blind.

 

You should hear the floppy disk being accessed & watch the light carefully. When and only when it goes out you can type

 

the following:

 

 

 

nvflash -4 -5 -6 -j romname.rom

 

 

 

then hit return.

 

You will hear the floppy disk accessing for a while and eventually the light will go out.

 

At this point you will press the "Y" key on your keyboard. It should BEEP. If it does not, as can happen with a really bad

 

flash press it again and it should BEEP.

 

After a few seconds, the little light on the shift key on your keyboard will start flashing. When both it and the floppy

 

light have gone out you are done.

 

You can restart your computer & hopfully the screen should light up.

aqua-mac
aqua-mac
Posted
  • Author
Posted

Yes, it needs to be done on a PC in pure DOS from a boot disk.

 

Are you using your Mac 285 in a Mac Pro or Hackintosh? The Mac card should also work in a PC Hack but will need the same strings or whatever method you use to achieve QE & CI.

macgirl
macgirl
Posted
Posted

I am using it on a Mac Pro (2009) with a GT120 on Slot 2, for OpenCL purposes.

 

On the Hackintosh I am using the 9800GTX, wich on OpenGL Viewer tests is a little bit faster than the GTX285 because the procesor is faster (3GHz Core 2 Duo) than the Mac Pro (2.26 GHz 2 Quad Xeons), but I guess that OpenGL Viewer test does not take advantage of parallel processing.

  • 4 weeks later...
the.mighty
the.mighty
Posted
Posted
I read up on this issue with 2gig version before i bought mine and decided to go for the 1gig version instead. Worked fine with NVenabler and Chameleon RC3 detection off under SL, FWIW.

 

how exactly did you get your gtx285 work under snow leopard?

 

i tried aquamacs gfx string tutorial (with chameleon rc3) but i cant get it working.

 

please share your way to success.

  • 2 months later...
lastowl
lastowl
Posted
Posted

the mirror u wanted

But in theory flashing the bios of a noraml gtx 285 with a mac gtx 285 would make it work like a Original Mac gtx 285

(But there usually is side effects, also some gtx285 use a a custom pcb like sparkle making it in compatible)

 

Also question for aqua mac, is it possible to extract just the efi boot rom not the entire boot rom tweak it so, just boot the efi rom meaning it still uses originals bios with additional efi

  • 3 years later...
  • 3 weeks later...
rominator
rominator
Posted
Posted

Mac rom for GTX285 WILL NOT FIT on any standard PC GTX285. The chip has to be 256K, they all have either 64K or 128K chips.

 

The only difference in the BIOS that would be meaningful is the monitor definitions. You could take the PC BIOS part off Mac 285 file and change last rom indicator to "80" and fix checksum and you would accomplish same thing and avoid soldering.

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