ms-dos.asm

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STACK_SEG     SEGMENT   STACK
    STACK_BUF DW        120 DUP(?)
    TOP       EQU       $-STACK_BUF
STACK_SEG     ENDS
DATA_SEG      SEGMENT   PARA
MESS          DB        'HELLO' ,0DH,0AH,'$'
DATA_SEG      ENDS
CODE_SEG      SEGMENT   PARA
;------------------------------------------------------
MAIN          PROC      FAR
              ASSUME    CS:CODE_SEG,DS:DATA_SEG
              ASSUME    SS:STACK_SEG
START:
              PUSH      DS
              XOR       AX,AX
              PUSH      AX
              MOV       AX,STACK_SEG
              MOV       SS,AX
              MOV       SP,TOP
              MOV       AX,DATA_SEG
              MOV       DX,OFFSET MESS

              MOV       AH,9
              INT       21H
              MOV       AH,4CH
              INT       21H
MAIN          ENDP      
;------------------------------------------------------
CODE_SEG      ENDS
              END       START