Okay, so I've got the 4870 in the Mac Pro and am getting frustrated.
I was afraid to do this all through OSX since some others with the same card I bought had problems. So I've spent the last 1.5 hours trying to figure out how to do it through DOS... making what I think are boot discs, etc. I just don't get it.
My Mac Pro (1,1) has the power for the card on the logic board, but there only seems to be two... and one goes to my X1900 so I can only plug one into the 4870. My new card which is in the machine doesn't come up in the list of hardware (About this Mac) and I'm assuming that's because it either doesn't have enough power or because it's a PC card and the Mac doesn't know what it is.
When I try to flash with Zeus, it gives me a message that says, "Flash Aborted! Possible reasons: Card not compatible with ROM or Zeus".
So maybe it's a simple case of the wrong ROM? I'm using the 4870 ROM from ROMS.zip... my card is the XFX 4870 ZWFC v.E
Any help is so appreciated!