4-17.asm

基于汇编语言的几个微机接口程序

4-17题


TITLE   8086 Code Template (for EXE file)

;       AUTHOR          emu8086
;       DATE            ?
;       VERSION         1.00
;       FILE            ?.ASM

; 8086 Code Template

; Directive to make EXE output:
       #MAKE_EXE#

DSEG    SEGMENT 'DATA'
      AD1 DB 1,3,-4,-5,6,0,-4,5,8,4,6,-7
      
      AD2 DB 30H 
          DB ?   
          DB 30H   DUP(?)
          
      AD3 DB 30H
          DB ?   
          DB 30H   DUP(?)
      NUM1 DB 0
      NUM2 DB 0
      CHAR1 DB 'POSITIVE NUM1:',0AH,0DH,'$'
      CHAR2 DB 'NEGATIVE NUM2:',0AH,0DH,'$'
      CHAR3 DB 0AH,0DH,'$'
; TODO: add your data here!!!!

DSEG    ENDS

SSEG    SEGMENT STACK   'STACK'
        DW      100h    DUP(?)
SSEG    ENDS

CSEG    SEGMENT 'CODE'

;*******************************************

START   PROC    FAR

; Store return address to OS:
    PUSH    DS
    MOV     AX, 0
    PUSH    AX
      MOV AX, DSEG
      MOV DS, AX
      MOV ES, AX
      
      MOV SI,OFFSET AD1
      MOV CX,12
      MOV BX,OFFSET AD2
      ADD BX,2
      MOV DI,OFFSET AD3
      ADD DI,2
   
    
      
LOP3: MOV AL,[SI]
      INC SI
      CMP AL,0
      JG JOP1
      JL JOP2
      JMP LOP4
      
LOP4: LOOP LOP3
      JMP JUST

JOP1:  
      INC NUM1
      MOV [BX],AL
      INC BX
      LOOP LOP3
      JMP JUST

JOP2: 
      INC NUM2
      MOV [DI],AL
      INC DI
      LOOP LOP3
      JMP JUST
JUST:
     MOV DX,OFFSET CHAR1
     MOV AH,09H
     INT 21H
     
     ADD NUM1,30H
     MOV DL,NUM1
     MOV AH,02H
     INT 21H  
     
     MOV DX,OFFSET CHAR3
     MOV AH,09H
     INT 21H
     
     MOV DX,OFFSET CHAR2
     MOV AH,09H
     INT 21H
     
     ADD NUM2,30H
     MOV DL,NUM2
     MOV AH,02H
     INT 21H



MOV AH,4CH
INT 21H      
      




; set segment registers:
    MOV     AX, DSEG
    MOV     DS, AX
    MOV     ES, AX


; TODO: add your code here!!!!





; return to operating system:
    RET
START   ENDP

;*******************************************

CSEG    ENDS 

        END    START    ; set entry point.