运行下面的汇编语言程序,在NUM内存单元中得到的结果是【 】。DSEG SEGMENT DAT DB 5,13,4,-2,-6,23,3,1,9,0 CNT EQU $-DAT-1 NUM DB DSEG ENDS SSEG SEGMENT STACK DB 256DUP(0) SSEG ENDS CSEG SEGMENT ASSUME DS:DSEGSS:SSEG,CS:CSEG START: MOV AX,DSEG MOV DS,AX MOV SI,OFFSETDAT MOV CX,CNT XOR BL,BL LP: MOV AL,[SI] XOR AL,AL[Si+1] TEST AL,80H ;两个相邻字节的最高位相同吗 JNE NEXT INC BL NEXT: INC SI LOOP LP MOV NUM,BL MOV AH,4CH, INT 21H CSEG ENDS END START【 】 。