简答题
阅读下面程序段,指出它的功能。DATASEGMENTASCIIDB30H, 31H, 32H, 33H ,34H ,35H, 36H, 37H, 38H, 39HHEX DB04HDATAENDSCODESEGMENTASSUME CS:CODE, DS: DATASTART: MOV AX, DATAMOV DS, AXMOV BX,OFFSET ASCIIMOV AL,HEXAND AL,0FHADD BX,ALMOV AL,[BX]MOV DL,ALMOV AH,2INT 21HMOV AH,4CHINT 21HCODEENDSEND START
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