7xxx rom creating test.

[mac567]

Benchmark results mac pro 2.1/1.1 (flashed) with 2x intel es e5340 bsel to 3.0ghz 8 cores.
The card is a sapphire hd7870 ghz edition with a short pcb which I got as a new open box for 120usd shipped.
here is the modified frambuffer
00  04  00  00  04  03  00  00  00  01  00  00  12  04  01  01
00  08  00  00  04  02  00  00  00  01  00  00  22  05  02  03
00  02  00  00  04  02  00  00  00  01  00  00  11  02  03  04
00  02  00  00  04  02  00  00  00  01  00  00  10  00  04  02


[armdn]

Successfully made custom rom and flashed my new MSI Radeon HD 7970. Bootscreen works, but there is a problem:

Card recognized as a 7950, rewrited efi header, but no go, still 7950...

[Rominator]

Somewhere in those threads I posted 7970 EFI.

[armdn]

Downclocked rom.But well - now recognized properly.

[COPLASD]

What I still didn't get after all these posts:

• Is this mod compatible with a Mac Pro 1,1 on Mavericks using TIAMO's boot.efi?
• Has anyone tried this with an entry-level Radeon HD7750 card?

[armdn]

What I still didn't get after all these posts:

• Is this mod compatible with a Mac Pro 1,1 on Mavericks using TIAMO's boot.efi?
• Has anyone tried this with an entry-level Radeon HD7750 card?

Yes
No

[COPLASD]

• Has anyone tried this with an entry-level Radeon HD7750 card?

No

Well, is there any point in trying this or is it doomed to fail? After all, HD7750 cards are cheap to get and don't even require a separate power plug.
On the other hand, I only found a "7950mac.efi" in netkas' bundle file.

[genetixa]

Finally flashed my R9 280x using the netkas script and the 7950 rom. Dp working and DVI DL working too. Memory core and fan speed seem to be identical to the previous non efi state. I had problem writing the rom, I was getting 'wrong subsystem' error in ATIWinflash. Got around this by flashing only the efiheader and then flashing my scriptmade rom back.
The system is reporting an 7950, but if I've read this forum right, it's only cosmetic. Now I only have to remove the R17 resistor to get PCI 2.0.

So the bug I reported to Apple regarding 10.9.2 is no more. I must say I don't agree with Apple by changing their support regarding PC card with no mac Efi in 10.9.2. They surely want people to buy the R2D2 trashcan!


Thanks very much for the script and the rom!

Seb.

[jasonsansone]

So the bug I reported to Apple regarding 10.9.2 is no more. I must say I don't agree with Apple by changing their support regarding PC card with no mac Efi in 10.9.2.

They don't support the EFI cards either.  The Sapphire 7950 Mac Edition doesn't get any love either (its all the same driver set really).

[Rominator]

So the bug I reported to Apple regarding 10.9.2 is no more. I must say I don't agree with Apple by changing their support regarding PC card with no mac Efi in 10.9.2.

They don't support the EFI cards either.  The Sapphire 7950 Mac Edition doesn't get any love either (its all the same driver set really).

Jason, what has happened is that with 10.9.2 if your card doesn't have EFI on it, it won't work at all with Apple LEDs via DisplayPort. Not sure what happens with Hackintoshes.

At least with real Macs a quick flash fixes it.

If running via DVI or HDMI you are unaffected.

[jasonsansone]

Ahhh.  My mistake.  Good to know.

[peanutlasko]

I'm having trouble with running this script - Followed all directions.

My Mac 3,1 shows 7950 (not 79xx), however I still don't get a boot screen.

Attached my original and modded bios.

Edit: I also tested all other ports, HDMI and DP - still no boot screen. The card works perfect in Windows and Mac - even shows correctly in system profiler just no Apple logo

[nullmaster]

• Is this mod compatible with a Mac Pro 1,1 on Mavericks using TIAMO's boot.efi?
• Has anyone tried this with an entry-level Radeon HD7750 card?

YES

and

Yes, and it didn't work. It showed up as a 7950 with two entries in System Profiler, but wouldn't crank out any video whatsoever in OS X. I've attached the DarwinDump ROM and the script-created ROM if someone wants to peruse it. Using an XFX 7750 FX-775A-CGFR.

I still have my original 7300 card, so I can get boot video when/if needed. Flashed back to original and going to try to get a little bit of sleep tonight.

[Decomo]

I flashed MSI R7970-2PMD3GD5 with MAC7970.rom and have got an boot screen!
Thank you netkas and Rominator.

[dyttioaoa?]

I am having a bit of a problem here. I have a Gigabyte HD7950 WF3 but both BIOS ROMS on the card (both already contain a GOP UEFI btw) do not go well with the script. This is the complete Terminal output:

Code:

./makerom.sh --efifile=7950mac.efi --romfile=efiromheader.rom --originalrom=BIOS7950.ROM --devid=679a
running on 7950mac.efi, efiromheader.rom with devid 679a
Patching files 7950mac.efi, efiromheader.rom for device-id 0x679a
Successfully patched efi file
Successfully patched efi rom file

Orig Size = 125440
Comp Size = 47591
47591+0 records in
47591+0 records out
47591 bytes transferred in 0.059426 secs (800844 bytes/sec)
EFI part is ready at 679a.efipart.rom
orig size - 65536
65536+0 records in
65536+0 records out
65536 bytes transferred in 0.082488 secs (794491 bytes/sec)
Before:
OpRom (size=65536, indicator_offset=0x231, indicator=0x0, checksum=0x0)
OpRom (size=48128, indicator_offset=0x31, indicator=0x80, checksum=0x0)
RawData (size=17408)
Traceback (most recent call last):
  File "fixrom.py", line 110, in <module>
    op_rom.fix()
  File "fixrom.py", line 90, in fix
    self.data[-1] = chr(0x100 - sum)
ValueError: chr() arg not in range(256)
the rom is ready at BIOS7950.ROM.efi.rom

What am I doing wrong? Thx for helping!