I think this is a bit of an oversimplification. I’m seeing some of these appear on sandpile.org, it does look like a lot of them are vestigial/legacy things.

I think this is a bit of an oversimplification. I’m seeing some of these appear on sandpile.org, it does look like a lot of them are vestigial/legacy things. But, I think the implied meaning of “documented” for the presentation is “documented by the manufacturer”. Just because some of these have been reverse engineered by others doesn’t really make them “documented”, at least, not in the spirit of what the project is trying to find. He also points out that some of these (0f0d, 0f18, etc) were added to the documentation in the last year - the concern is that they were hidden for years and years before that. 0f0f and 0fa7 look like the most interesting to me - 0f0f is probably 3Dnow, but I can’t find any information on the gaps in the 3Dnow set; he says in the presentation 0fa7 is the via padlock instructions, I can’t find any references on the gaps in that range either.