DATA SEGMENT
TABLE DB 1,2,3,4,5,6,7,8
XIAN1 DB "THE NUMBER OF FUSHU IS:","$"
XIAN2 DB "   MIN=","$"
XIAN3 DB "  MAX=","$"
XIAN4 DB "H","$"
DATA ENDS
STACK SEGMENT STACK
DB 100 DUP(?)
STACK ENDS;上為輸出說明及數據定義部分

CODE SEGMENT
ASSUME CS:CODE,DS:DATA,SS:STACK
;1
DIVIDE PROC
MOV DL,AL;據傳送
JMP L2
L1:INC BX;負數，把BX加1
   JMP L3
L2:CMP DL,0;較正負
   JL L1
L3:
RET
DIVIDE ENDP

;2
ZHUAN PROC
CMP AL,0;斷正負
JL FU
JMP ZHENG
FU:XOR AL,7FH
   INC AL;負數求原碼
ZHENG:MOV DL,AL 
      MOV BL,AL
      MOV CL,4 
      SHR DL,CL;移得倒高四位
      ADD DL,30H  
      CMP DL,39H 
      JLE L1 ;高四位小于9則直接跳轉倒輸出
      ADD DL,07H ;高四位大于9則加7
      L1: MOV AH,2 
      INT 21H
      MOV DL,BL 
      AND DL,0FH ;操作獲得低四位
      ADD DL,30H 
      CMP DL,39H 
      JLE L2 
      ADD DL,7 
      L2: MOV AH,2 
      INT 21H;高四位同樣的處理
RET 
ZHUAN ENDP

;3
MIN PROC
MOV CX,7
FINDMIN:LODSB
        JMP BIJIAOMIN
        PAIXUMIN:MOV DL,AL;L存儲較小數
                 JMP BAOCHIMIN
        BIJIAOMIN:CMP AL,DL
                JLE PAIXUMIN;找到較小的數就跳轉倒排序語句
        BAOCHIMIN:;未找到比當前DL中小的數就保持
        LOOP FINDMIN
        MOV AL,DL
        CALL ZHUAN
RET 
MIN ENDP

;4
MAX PROC
MOV CX,7
FINDMAX:LODSB
        JMP BIJIAOMAX
        PAIXUMAX:MOV DL,AL
                 JMP BAOCHIMAX
        BIJIAOMAX:CMP AL,DL
                  JGE PAIXUMAX
        BAOCHIMAX:
        LOOP FINDMAX
        MOV AL,DL
        CALL ZHUAN
RET 
MAX ENDP;MIN子函數思路相同，只是尋找較大數而已。



START:
MOV BX,0
MOV AX,DATA
MOV DS,AX
MOV SI,OFFSET TABLE
MOV DX,OFFSET XIAN1
MOV AH,9
INT 21H;出說明部分
MOV CX,8
NUM: LODSB
     CALL DIVIDE
     LOOP NUM;用子函數ZHUAN統計負數個數
ADD BL,30H
MOV DL,BL
MOV AH,2 
INT 21H;出BL中的值，即負數個數

;MIN求最小值
MOV AX,DATA
MOV DS,AX
MOV SI,OFFSET TABLE
MOV DX,OFFSET XIAN2
MOV AH,9
INT 21H;字說明部分
LODSB
;INC SI
MOV DL,AL
CALL MIN;用子函數MIN

MOV AX,DATA
MOV DS,AX
MOV DX,OFFSET XIAN4
MOV AH,9
INT 21H;指定文字格式輸出

;MAX
MOV AX,DATA
MOV DS,AX
MOV SI,OFFSET TABLE
MOV DX,OFFSET XIAN3
MOV AH,9
INT 21H;字說明部分
LODSB
;INC SI
MOV DL,AL
CALL MAX

MOV AX,DATA
MOV DS,AX
MOV DX,OFFSET XIAN4
MOV AH,9
INT 21H;指定文字格式輸出


MOV AH,4CH
INT 21H;程序結束
CODE ENDS
END START