; MOV DX,A4+6与A4内容无关吗
.386
STACK  SEGMENT  USE16 STACK
       DB 200  DUP(0)
STACK  ENDS

DATA   SEGMENT USE16
A4    DW  02,20,30,40,50,60,70
ANSWER    DW  0
DATA   ENDS

CODE    SEGMENT USE16
        ASSUME  CS:CODE,DS:DATA,SS:STACK
BEGIN:  MOV   AX , DATA
        MOV   DS , AX
        MOV   AX ,  A4+6;40    
        MOV   AX ,  [A4+10];70 :( 这个[]等于没有加 
EXIT:   MOV   ANSWER , AX
        MOV   AX , 4C00H
        INT   21H
CODE    ENDS
        END  BEGIN
        
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
   ; MOV DX,A4+6与A4内容无关吗
.386
STACK  SEGMENT  USE16 STACK
       DB 200  DUP(0)
STACK  ENDS

DATA   SEGMENT USE16
A4    DW  02,20,30,40,50,60,70
ANSWER    DW  0
DATA   ENDS

CODE    SEGMENT USE16
        ASSUME  CS:CODE,DS:DATA,SS:STACK
BEGIN:  MOV   AX , DATA
        MOV   DS , AX
        MOV   AX ,  A4+6;40
        MOV   BX,A4    
        MOV   AX ,  [BX+10];70  :)这样才可以
EXIT:   MOV   ANSWER , AX
        MOV   AX , 4C00H
        INT   21H
CODE    ENDS
        END  BEGIN