.model small
.stack 1024

.data

myString byte "Hello World!",0    ; a null-terminated string

myStruct word 0

.code

mov ax,@data
mov ds,ax       ;load data segment into DS

mov bx,offset myString   ;get the pointer to myString

mov word ptr [ds:myStruct],bx

mov ax,4C00h
int 21h         ;quit program and return to DOS