3 ms·

x86 used microcode from the beginning: https://www.reenigne.org/blog/8086-microcode-disassembled/ https://www.reenigne.org/blog/8086-microcode-disassembled/

• headsupftw 6y ago
  Maybe he meant to say micro-operations.
  • oblio 6y ago
    Yes, you're right.