A.0000H B.0001H C.0FFFEH D.8000H
A.MOV CS,AX B.MOV SS,AX C.MOV SP,AX D.MOV BP,AX
A.MOV DX,[EAX] B.MOV DX,WORD PTR [AX] C.MOV DX,[SI] D.MOV DX,AX