You&#x27;re the second person to bring up microcode. I&#x27;m curious why two are focused on this rather than the HW itself. What about you?<p>Note: For readers not in the know, microcode is the sequence of wiring activations of the physical, closed hardware. Instructions, merely series of bits, get translated to that by the microcode engine running from a memory rather than hardwired engine. Unlike the ISA, it&#x27;s highly tied to the hardware since it drives it directly.