Advanced Micro Devices Inc (AMD)

[HailMary]

Floating point addendum: Volume II, chapter 2, lists differences between x86 and AMD64 architecture

From this reference manual, it looks like segmentation stuff still has to be included even in 64-bit compatibility mode. Yuck.
It looks like a lot of other junk also falls into this same bucket. Some stuff can be jettisoned with legacy mode, but not all.

I guess in 10 years there might be a cleaner x86 implementation.

I think I need to spend some more time reading this manual. It points out many of the fine details that shoot down some of the broad statements myself and others have made (on both sides of the argument).