汇编语言找最大值最小值，这个程序只能求出最大值，怎么改才能把最小值也求出来啊？？？
DATA SEGMENT
BUFF DB 5,9,3,7,2
MAX DB ?
MIN DB ?
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START: MOV AX,DATA
MOV DS,AX
MOV SI,0
MOV CX,OFFSET MAX
MOV BX,OFFSET BUFF
SUB CX,BX
MOV AL,[SI]
MOV MAX,AL
MOV BL,[SI]
MOV MIN,BL
LOOP1: MOV AL,[SI]
CMP MAX,AL
JAE NEXT1
MOV MAX,AL
MOV BL,[SI]
CMP MIN,BL
JNB NEXT2
MOV MIN,BL
NEXT1:
NEXT2: INC SI
LOOP LOOP1
MOV DL,MAX
ADD DL,30H
MOV AH,02H
INT 21H
MOV DL,MIN
ADD DL,30H
MOV AH,02H
INT 21H
MOV AH,4CH
INT 21H
CODE ENDS
END START
LOOP1:MOV AL,[SI]
CMP MAX,AL
JAE NEXT11
MOV MAX,AL
NEXT11:
MOV BL,[SI]
CMP MIN,BL
JNBN EXT2
MOV MIN,BL
NEXT1:追问
怎么出来的最小值和最大值一样都是9啊？？？
已修改调试好，完整程序如下：
DATA SEGMENT
BUFF DB 5,9,3,7,2
MAX DB ?
MIN DB ?
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START: MOV AX,DATA
MOV DS,AX
MOV SI,0
MOV CX,OFFSET MAX
MOV BX,OFFSET BUFF
SUB CX,BX
MOV AL,[SI]
MOV MAX,AL
MOV BL,[SI]
MOV MIN,BL
LOOP1: MOV AL,[SI]
CMP MAX,AL
Ja NEXT11
MOV MAX,AL
next11:
MOV BL,[SI]
CMP MIN,BL
Jb NEXT2
MOV MIN,BL
NEXT1:
NEXT2: INC SI
LOOP LOOP1
MOV DL,MAX
ADD DL,30H
MOV AH,02H
INT 21H
MOV DL,MIN
ADD DL,30H
MOV AH,02H
INT 21H
MOV AH,4CH
INT 21H
CODE ENDS
END START
