8.asm

.model small
.stack 100h

.data
a db 'THE SUM OF $'
b db ' AND $'
c db ' IS $'

.code

main proc  
    mov ax , @data
    mov ds , ax
    
    mov ah , 2
    mov dl , 63
    int 21h
    
    mov ah , 1
    int 21h
    mov bh , al 
    
    mov ah , 1
    int 21h
    mov bl , al 
    
    mov ah , 2
    mov dl , 10
    int 21h
    mov dl , 13
    int 21h 
    
    mov ah , 9
    lea dx , a
    int 21h
     
    mov ah , 2
    mov dl , bh
    int 21h 
     
    mov ah , 9
    lea dx , b
    int 21h 
    
    mov ah , 2
    mov dl , bl
    int 21h 
    
    mov ah , 9
    lea dx , c
    int 21h 
    
    add bh , bl 
    sub bh , 48
    
    mov ah , 2
    mov dl , bh
    int 21h 
    
    exit:
    
    mov ah , 4ch
    int 21h
    main endp
end main