if ax is positive than show 1 ,ax is 0 then show 0 and if ax is " - " than show -1 ,solve the problem by using assembly language

    

  .model small
 .stack 100h
 .data
 .code
 main proc
   
    mov ah,1
   int 21h
   mov bl,al
  
    cmp bl,'0'
    jz zero
    js negetiv
    jns positiv
   
    zero:
    mov ah,2
    mov dl,30h
    int 21h
    jz exit
    negetiv:
    mov ah,2
    mov dl,2dh
    int 21h
    mov dl,31h
    int 21h
    js exit
   
    positiv:
    mov ah,2
    mov dl,31h
    int 21h
    jns exit   
        
    exit:
    mov ah,4ch
    int 21h
    main endp
 end main