The fact that modern-day x86 processors still pretty much support the same operating systems and software as their ancestors did is quite a feat. Much of this effort had already been accomplished w…
  • paulh@lemmy.sdf.org
    4·
    8 days ago

    Fantastic description!

    Z-80 was much the same: djnz uses C as the loop counter (like the 8086 LOOP used CX iirc), H and L combine to make a 16-bit pointer…