Addition of Two Numbers Using Procedure Call in 8086 Assembly Language

.model small

.code

main proc

    mov ah, 01h

    int 21h

    mov bl, al

    mov ah, 01h

    int 21h

    mov cl, al

    call addition

    call output

    main endp

addition proc

    add bl, cl

    sub bl, 30h

    mov dl, bl

    ret  

addition endp

output proc

    mov ah, 02h

    int 21h

    ret

    output endp

end main

8086 Stack Excercise

1. Suppose that AX=1234h ,BX=5678h, CX=9ABCh, and SP=0100h . Give the contents of AX,BX, CX, and SP after executing the following instructions:

    PUSH AX     

    PUSH BX     

    XCHG AX,CX  

    POP  CX     

    PUSH AX     

    POP  BX  

  

Reverse String Using Stack in Assembly 8086

 .model small
 .stack 100h
 .code
 main proc
  
    mov cx,0
  
    pushin:
         mov ah,01h
         int 21h
         mov bl,al
       
         cmp bl, 0Dh
       
         je output
        
         push bx
       
         inc cx
       
         jmp pushin 
       
     output:
   
     mov ah,02h
     mov dl,0Dh
     int 21h
     mov dl, 0ah
     int 21h
   
   
     popout:
     pop dx
     int 21h
     loop popout
   
 
   
  main endp
 end main


Output: