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A Boot screen for Radeon 560,570,580

macguru9999

macrumors 6502
Original poster
Aug 9, 2006
389
130
Hi, I understand why there is no boot screen with the Radeon 560 - rx 580 cards in a mac pro 5,1 at the moment . I was wondering, is anyone working on a rom to flash these cards ? ALSO, could you download the rom from a 27" retina 2017 imac, that has the same graphics, and flash a card with that ?? (or similarly use the rom from an imac pro to flash a vega card)
 

tsialex

macrumors G3
Jun 13, 2016
8,589
9,146
Hi, I understand why there is no boot screen with the Radeon 560 - rx 580 cards in a mac pro 5,1 at the moment . I was wondering, is anyone working on a rom to flash these cards ? ALSO, could you download the rom from a 27" retina 2017 imac, that has the same graphics, and flash a card with that ?? (or similarly use the rom from an imac pro to flash a vega card)
It's more complex than you are thinking.

Every Mac released after 2012/2013 uses UEFI with GOP protocol, but Mac Pro until MP5,1 uses EFI and UGA, so you can't use a module extracted from a UEFI Mac (GOP) to have pre-boot configuration/boot screens into a MP5,1 (UGA).
 
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macguru9999

macrumors 6502
Original poster
Aug 9, 2006
389
130
It's more complex than you are thinking.

Every Mac released after 2012/2013 uses UEFI with GOP protocol, but Mac Pro until MP5,1 uses EFI and UGA, so you can't use a module extracted from a UEFI Mac (GOP) to have pre-boot configuration/boot screens into a MP5,1 (UGA).

OK fair enough
Does that mean its impossible or that its just more difficult because you have to write the code for the rom from scratch ?
And if possible is anyone working on this at the moment ?
thanks
 
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tsialex

macrumors G3
Jun 13, 2016
8,589
9,146
OK fair enough
Does that mean its impossible or that its just more difficult because you have to write the code for the rom from scratch ?
And if possible is anyone working on this at the moment ?
thanks
For sure it's possible, but for Apple/AMD, not us. NVIDIA showed that it's possible to support UGA and GOP at the same time with RTX 2xxx.
 
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macguru9999

macrumors 6502
Original poster
Aug 9, 2006
389
130
Yea I was thinking of an RTX 2070 when drivers are released for my 5,1. Right now I am very glad my GTX 680 is supported even though its an old design.
 
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