string.asm

   .model small
   .stack 100h
   
   .data
        text db "hello world $$"
        
    .code
        main proc
            mov bx, @data
            mov ds, bx
            mov ah, 09h
            mov dx, offset text
            
            int 21h
            
            mov ah, 4ch
            mov al, 00
            int 21h
            
            main endp
        end main