GBATemp sucks big time. It's nearly impossible to find anything. And noone bothers to write proper official thread, no you supposed to read all 40+ pages to know your own specific thing.
On Devolution. I'm mainly interested in this because my used F-Zero disc is in a very bad shape, i get disc error half of the time i try to play the game (especially crushing when finishing hard challenge and you get an error and lose progress). But first post on GBATemp mentions F Zero is not working or something and i checked last few pages and noone say it was fixed eventually.
Still i tried it, i first had to dump it on SD Card with CleanRip on Wii and i think the tool crapped out in the middle of dumping but still created the iso file. When i tried the game through Devolution on Wii, it showed me logo screen and then sad my disc is corrupted.
Then i tried more reliable disc. I took Eternal Darkness, played it a bit to check if it's alright (hmm, very intriguing game, and it doesn't even look as bad as some say) and dumped it on SD Card. CleanRip did it's thing and also used some site to check if it's legit (hehe, reminds of all that DRM shenanigans) and created iso file.
I checked it through Devolution on Wii and it worked okay. Though during the disc slot was flashing entire time and if does access the disc all the time during Devolution session then what's the point?
On Wii U iso file didn't work. It just showed me black screen for five minutes until i pressed power and it went back to Homebrew channel.