7例456Word文档格式.docx

7例456Word文档格式.docx

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GATMAX:

MOVBX，2000H

MOVAL，[BX]

MOVCX，14H

PL1:

INCBX

CMPAL，[BX]

JAEPL2

PL2:

DECCX

JNZPL1

MOV[BX]，AL

例5求两数差的绝对值

data_segSEGMENT

oper1DW135

oper2DW289

resultDW?

data_segENDS

code_segSEGMENT

ASSUMECS:

code_seg，DS:

data_seg

start:

MOVAX，data_seg

MOVDS，AX

MOVAX，oper1

SUBAX，oper2

JGEstore

NEGAX

store:

MOVresult，AX

MOVAH，4CH

INT21H

code_segENDS

ENDstart

例6求两数差的绝对值

data_segSEGMENT

start:

CMPAX，oper2

JLbranch2

JMPstore

branch2:

SUBoper2，AX

MOVAX，oper2

store:

ENDSTART