Is there a list of deprecated x86 instructions?

Question

I\'m taking an x86 assembly language programming class and know that certain instructions shouldn\'t be used anymore -- because they\'re slow on modern processors; for example,

Answer 1

If you what to know what to avoid, go directly to the processor manufacturers, both intel and amd have manuals for the instruction sets their processors support and to what degree they support them, your best bet if probably the optimization volumes, but if your only just starting out, take Jim's advice, get the thing working first before you worry about speed