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DATA        SEGMENT
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BB                DW         1127H
RF                DB         00H
DATA        ENDS
STACK        SEGMENT
                DB        100 DUP (?)
STACK        ENDS
CODE        SEGMENT
                ASSUME CS:CODE,DSATA
START:        MOV        AX, DATA                ;[1]
                MOV        DS, AX                        ;[2]
                MOV        CL,0                        ;[3]
                MOV        AX, AA                        ;[4]
                MOV        BX, BB                        ;[5]
                CMP        AX, BX                        ;[6]
                JC        L1                                        ;[7]
¡¡¡¡MOV        CL, 01H                ;[8]
L1:                MOV        RF,CL                        ;[9]
                MOV        AH, 4CH                ;[10]
                INT                21H                                ;[11]
CODE        ENDS                                        ;[12]
                END START                        ;[13]
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