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I have been following this forum for a few days now and I think I have read most topics regarding the 5770/5870 flashing stuff. However, what I'm missing a bit is some kind of an overview of what has been achieved already by netkas, rominator and the other great guys who have initiated all of this.

Is there some wiki page or some table that gives new users a quick overview of what already is possible with which configration (mac pro, graphic card, rom) and what has yet to be tested/hacked first?

If not, just to give you an example (with some example data) what I'm imagining:

Card	Mac Pro 1,1	Mac Pro 1,2	Mac Pro 1,3	Mac Pro 1,4
Apple ATI Radeon 5770	Works	Works	Works	Works
Apple ATI Radeon 5870	Works	Works	Works	Works
Sapphire HD 5770  (11163-02-10/20)	Partially works with ROM XY. Only DVI port working But no boot screen (link to post). Confirmed	Not tested	Not tested	Works with ROM XY (link to post). Not confirmed yet.
Sapphire HD 5870  (11161-03-50)	Partially works with ROM XY. Only DVI port working But no boot screen (link to post). Confirmed	Not tested	Not tested	Works with ROM XY (link to post). Not confirmed yet.
Sapphire Vapor-X 5870 (11161-08-50R)	Works with ROM XY	Not tested	Not tested	Not tested
XFX Radeon HD 5870 (HD-587X-ZNFA)	Works with ROM XY	Probably won't work	Not tested	Not tested
XFX Radeon HD 5870 (HD-587A-ZNF9)	Works with ROM XY	Probably won't work (link to post)	Doesn't work (link to post)	Doesn't work (link to post)

System specs:
CPU: Intel E6750
Motherboard: GA-P35C-DS3R
VGA: ATI HD3870
Harddisk: Maxtor 30GB IDE
RAM: 6GB

I recently started trying to install Mac OSX Snow Leopad on my PC but are experiencing some VGA problems.
When booted from Darwin and the params scrolled down i only get a dark black screen, nothing happens further.

I tried booting with ther following params:
cpus=1 maxmem=2048
cpus=1 maxmem=4096
-x32 arch=i386 -v
-x32 arch=i386 -f -v
"Graphics Mode"="1280x1024x32"
"Graphics Mode"="1280x1024x32@75"
and some other crazy variations...

I have read several posts about the 3870 driver support "complicated ways" but they were old posts so i thought maybe there is a new simple way of doing this.
I only tried the iATKOS S3/V7 and the Kalyway iso's.

Does anyone know what i can do or how to handle further?

two cards for me as well... one is ATY,uakari_parent and one is shown as Radeon or 5870 or something, cant tell right now from memory.

but im actually not too surprised to see it two times in there. normal cards show up two times as well (my firewire card is in there twice as is my usb card)

a reason for why this is happening in the particular case of the 5870 would be good to know tho.

in case of my usb/firewire cards it is the PCIe/PCI controller on the card taht shows up as one device in system profiler and the actual usb/firewire controller showing up as another device... can post a screenshoot later on when Im at home. maybe its something comparable that lets the 5870 appear in there twice.

Happy to see it worked. So it seems that Apple drivers and EBC work well with several 5870 designs.

Rominator, is there a bandwidth test you can try? I'm not sure that system profiler reports things correctly. I suppose it lists two cards in the PCI slot. That already doesn't make sense and that may be why the reported bandwidth is twice lower.

hm... realy wierd. mine is this http://www.sapphiretech.com/presentation/product/?leg=&psn=000101&pid=337 topfirst 5870 in products list. Interessting that they seem to have completly different gpu bios. Well i just hope netkas finds some time to take a look at my rom.

OK I applied the 4870 method to this ROM. I modified pipomolo42's terminal commands to extract the EBC part from netkas' uakari ROM (with Apple's security disabled  ) and to paste it after the sapphire PC BIOS. Then, the pyton script fixed the last ROM indicator and checksum.
Didn't have to relocate the MCUC.

Give it a try if you dare.  
(I deny all responsibility, but I really don't think it can damage the card)

Dude...

I LOVE YOU!

Honestly your Rom works absolutely perfect. Solves all the Problems i had before! Perfect Windows performance like it should and fully functional under OSX with Displayport and DVI (no HDMI cable here atm for testing). Can switch resolutions, rearrange monitors like i want or set them to sync Desktop. Everything works like a charm. Performance test under OSX will follow if anyone is interested. Also boot without GT120.

So far thank you very much

When in my 2009, the XFX5870 is running at 2.5

I am guessing that there is some other little "roadblock" that Apple put up doing this.

Yesterday I had a GTX285 in there pre-flash...ie, no ROM file in fresh chip.

It didn't know what the card was, but reported that it was running at 5.0

Which model of Mac Pro to you have? 2.5 GT/s is the normal speed for PCIe 1.0 16x, which is the standard in first gen models.

Regarding VGA output, I think mine chipped with a DVI to VGA adapter.

sry everything i can test so far is what i already said above... will get my hands on a VGA cable at work tomorrow to test VGA with DVI->VGA adapter.

will also try to get my hands on hdmi cable to see if three displays work with DVI/DVI/HDMI. gonna use TV as third display.

edit: also noticed Im getting 2.5GT/s

edit2: on MacPro 2008

Hopefully Netkas will sooner or later show us where these "checks" were in the 5870 EFI so that we can craft an EBC for 5770 cards.

Meanwhile, do you think it's possible to use the 5870 EBC (uakari) on the 5770? I assume it could be done with a couple of changes (Device ID...), since the iMac's EFI could be adapted to both the 5770 and 5870. Most things are managed by the BIOS, after all.

Some friends of mine at an editing facility in Burbank traded me the 5770 from their new 2010 Westmere for a GTX285 I had lying around. They said it worked just fine but they weren't able to get the Cuda drivers to work properly. My guess is that this is just some odd combo of driver issues.

Currently there are like 4 versions of 10.6.4 out so it is understandable that some odd mixes have come up. But in terms of "is it physically compatible?" The answer is a resounding YES.