TITLE PURPOSE: ADDS 4 WORDS OF DATA
  PAGE 60,132
  STSEG SEGMENT
  DB 32 DUP (?)
  STSEG ENDS
  DTSEG SEGMENT
  DATA_IN DW 234DH,1DE6H,3BC7H,566AH
  ORG 10H
  SUM DW ?
  DTSEG ENDS
  CDSEG SEGMENT
  MAIN PROC FAR
ASSUME CS:CDSEG,DS:DTSEG,SS:STSEG
  MOV AX,DTSEG
  MOV DS,AX
  MOV CX,04 
  MOV DI,OFFSET DATA_IN 
  MOV BX,00 
ADD_LP: ADD BX,[DI] 
  INC DI 
  INC DI 
  DEC CX 
  JNZ ADD_LP 
  MOV SI,OFFSET SUM 
  MOV [SI],BX 
  MOV AH,4CH 
  INT 21H 
  MAIN ENDP
  CDSEG ENDS
  END MAIN