name "hex-bin"

org 100h

; load binary value: 
; (hex: 5h) 
mov al, 00000101b

; load hex value: 
mov bl, 0ah

; load octal value: 
; (hex: 8h) 
mov cl, 10o

; 5 + 10 = 15 (0fh) 
add al, bl

; 15 - 8 = 7 
sub al, cl




; print result in binary: 
mov bl, al
mov cx, 8
print: mov ah, 2   ; print function. 
       mov dl, '0'
       test bl, 10000000b  ; test first bit. 
       jz zero
       mov dl, '1'
zero:  int 21h
       shl bl, 1
loop print
; print binary suffix: 
mov dl, 'b'
int 21h


; wait for any key press: 
mov ah, 0
int 16h

ret