Microcode != Using micro-ops.

Microcode has been around for half a century at least, much longer than micro-ops.

Uh. I thought that micro-ops were literally microcode instructions/operations?

In a modern processor they are however microcode as a general term is a catch-all term which basically means non-trivial configuration logic stored in somewhere not meant to be touched by people other than the vendor. I think IBM have millicode.

nanocode?