I'm currently working on doing a VRAM swap on some videocards, planning on putting 8Gbit chips on an Rx 470, donated from a dead 480 with a chipped die, and then the 4gbit chips from the 470 onto a 7850. I've been trying to figure out what in the vbios needs changed/copied over, and have most of what is documented in atombios.h figured out namely the vram_info that's 33bytes not including part-number, and memory timings for vram-module-info v7 and 45bytes not including part number in v8. I'm not sure what else has to be copied over/converted, and even in those there's a few unclear values. I did find some fairly in-depth register guide for some terascale cards, specifically a pdf on xorg's site, but I doubt that'd carry over to gcn, and the stuff for GCN cards seems to leave out a lot of those details.
Anyone got any guidance for what other details will be needed, and how to interpret some of the board-specific things?
Anyone got any guidance for what other details will be needed, and how to interpret some of the board-specific things?
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