问答题

已知:DS=2000H,BX=0300H,SI=0002H,(20300H)=12H,(20301)=34H,(20302H)=56H,(20303H)=78H,(21400H)=2AH,(21401H)=4CH,(21402H)=B7H,(21403H)=65H
试说明下列指令执行完后AX寄存器的内容:MOV  AX,[BX]


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