.model small

.stack 20

.data 
msg  db 'this is a test',0dh,0ah
msg1 db 'Today is a rainny day',0dh,0ah
msg2 db 'Today is a shiny day',0dh,0ah,'$'
.code
beg proc
;
    mov  ax,@data
    mov  ds,ax
;
    mov  dx,offset msg
    mov  ah,09h
    int  21h
;
    mov  ah,4ch
    int  21h
beg endp
    end  beg