a: mov ax, [fff0] mov bx, [fff2] mov cx, ax and cx, bx mov [fff8], cx mov cx, ax or cx, bx mov [fffa], cx mov cx, ax mov dx, bx not cx not dx and cx, bx and dx, ax or cx, dx mov [fffc], cx not cx mov [fffe], cx mov ax, [fff4] cmp ax, 0 je a halt