题目内容
试说明下述指令中哪些需要加上PTR操作符:BVAL DB 10H,20HWVAL DW 1000H(1) MOV AL,BVAL (__________________________ )(2) MOV DL,[BX] (__________________________ )(3) SUB [BX],2 (__________________________ )(4) MOV CL,WVAL (__________________________ )(5) ADD AL,BVAL+1(__________________________ )
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