289   mov  ah, al
291   test al, #0x07
472   cmp  al, #0x04  variable
479   mov  al, #0x13  variable
537   mov  ah, al
538   mov  al, #0x01  variable
552   mov  ah, al
553   mov  al, #0x12  variable
556   mov  al, #0x07  variable
557   out  dx, al
559   in   al, dx  variable
560   and  al, #0xbd  variable
563   or   al, #0x02  variable
567   or   al, #0x40  variable
569   out  dx, al  variable
575   mov  al, #0x17  variable
576   out  dx, al
578   in   al, dx  variable
579   or   al, #0x03  variable
580   out  dx, al
582   in   al, dx  variable
584   mov  al, #0x10  variable
585   out  dx, al
587   in   al, dx  variable
588   or   al, #0x01  variable
590   out  dx, al
591   mov  al, #0x20  variable
592   out  dx, al
606   cmp  al, #0x08
609   mov  al, #0x14
610   out  dx, al
612   in   al, dx
613   or   al, #0x40
614   out  dx, al
616   in   al, dx
618   mov  al, #0x10
619   out  dx, al
621   in   al, dx
622   or   al, #0x40
624   out  dx, al
625   mov  al, #0x20
626   out  dx, al
628   mov  al, #0x04
629   out  dx, al
631   in   al, dx
632   or   al, #0x08
633   out  dx, al
635   mov  al, #0x05
636   out  dx, al
638   in   al, dx
639   and  al, #0x9f
640   or   al, #0x40
641   out  dx, al
691   mov  al, [bx]
692   and  al, #0x01
712   mov  al, #0x01
713   mov  [bx], al
1069   mov  al, [bx]
1070   mov  bl, al