ZH: CMP AL,3AH;比较输入的ASC码 JL ZHI 若为0~9比如“1” SUBAL,30H;若为A~F,需要进行调整 A ADD AL, 06H AL=1OH JMPZH2 ZHI: SUBAL, 30H AL=OIH ZH: MOVBL AL BL=IOH ZH5: AND ALg OFOH AL=00H, 10H SHR AL, 4 AL=00H, 01H ADD AL, 30H ;AL=30H,31H MOV BH, AL 暂存高位,BL=30H,3IH MOV AL, BL AL=01H,10H AND AL, OFH AL=01H,00H ADD AL, 30H ;AL=31H,30H MOV BL, AL ;暂存低位,BL=31H,30HZH： CMP AL，3AH ；比较输入的ASCII码 JL ZH1 ；若为0～9 比如“ 1” SUB AL，30H ；若为A～F，需要进行调整 “A” ADD AL，06H ；AL＝10H JMP ZH2 ZH1：SUB AL，30H ；AL＝01H ZH2：MOV BL，AL ；BL＝10H ZH5：AND AL，0F0H ； AL＝00H，10H SHR AL，4 ；AL＝00H，01H ADD AL，30H ；AL＝30H，31H MOV BH，AL ；暂存高位，BL＝30H，31H MOV AL，BL ；AL＝01H，10H AND AL，0FH ；AL=01H，00H ADD AL，30H ；AL＝31H，30H MOV BL，AL ；暂存低位，BL＝31H，30H