I can never remember the names and ordering of the general purpose registers in
the x64 (AKA x86-64) architecture, so I made a diagram that shows the 16
general-purpose 64-bit registers in the x64 architecture, as well as the various
legacy names for half-registers/quarter-registers and so on.
Reference for this diagram: Introduction to x64 Assembly.
I hope this is of some use to someone. If you find any errors, please let me