用汇编进行代码转换程序设计

谁借莪１个温暖的怀抱￠ 2023-03-04 11:30 5阅读 0赞

# 用汇编进行代码转换程序设计 #

## 一、实现功能 ##

设计完成一个字母或数制之间的转化程序，主程序分别具有 5 种可选择的子功能，按相应的字符可分别进入相应的子功能并在屏幕上显示结果，按“q”键退出。 5 种可选择的子功能分别为：

*  实现小写字母向大写字母的转换
 *  实现大写字母向小写字母的转换
 *  实现二进制数向十六进制数的转换
 *  实现十六进制数向二进制数的转换
 *  实现十六进制数向十进制数的转换

## 二、系统分析 ##

对于五个子功能，可以先分别进行编程，最后在总的程序里写为5个子程序，根据用户进行的输入1~5时分别调用相应的子功能，用户输入其他字符时就是为退出程序。程序的总流程图如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDE5NDI5OQ_size_16_color_FFFFFF_t_70_pic_center]

每个小功能的分析我分别写了文章，大家可以根据需要去到对应功能~

1.  大小写的互相转换  
    https://blog.csdn.net/weixin\_44194299/article/details/107766574
2.  二进制数和十六进制数的互相转换  
    https://blog.csdn.net/weixin\_44194299/article/details/107767047
3.  十六进制数向十进制数的转换  
    https://blog.csdn.net/weixin\_44194299/article/details/107768533

## 三、运行结果 ##

*  功能1-大写转成小写：  
    ![在这里插入图片描述][20200803171315547.png_pic_center]
 *  功能2-小写转成大写：  
    ![在这里插入图片描述][20200803171432369.png_pic_center]
 *  功能3-二进制数转为十六进制数：  
    ![在这里插入图片描述][20200803171443873.png_pic_center]
 *  功能4-十六进制数转为二进制数：  
    ![在这里插入图片描述][20200803171452734.png_pic_center]
 *  功能5-十六进制数转为十进制数  
    ![在这里插入图片描述][20200803171459651.png_pic_center]

## 四、源代码 ##

DATA SEGMENT
    	MSG1 DB 'Please input your choice: (P.S:q is exit)$'
    	MSG2 DB '1: Uppercase to lowercase $'
    	MSG3 DB '2: Lowercase to Uppercase $'
    	MSG4 DB '3: Binary to Hex $'	
    	MSG5 DB '4: Hex to binary $'
    	MSG6 DB '5: Hex to dec $'
    	MSG7 DB 'Please input a number: $'
    	MSG8 DB ' <==> $'
    DATA ENDS
    CODE SEGMENT
    	ASSUME CS:CODE,DS:DATA
    START:
    	MOV AX,DATA
    	MOV DS,AX
    P:
    	CALL CRLF
    	LEA DX,MSG2       ;输出菜单
    	MOV AH,09H
    	INT 21H
    	CALL CRLF
    	LEA DX,MSG3
    	MOV AH,09H
    	INT 21H
    	CALL CRLF
    	LEA DX,MSG4
    	MOV AH,09H
    	INT 21H
    	CALL CRLF
    	LEA DX,MSG5
    	MOV AH,09H
    	INT 21H
    	CALL CRLF
    	LEA DX,MSG6
    	MOV AH,09H
    	INT 21H
    	CALL CRLF
    	LEA DX,MSG1
    	MOV AH,09H
    	INT 21H
    	CALL CRLF
    	MOV AH,01H    ;读入一个数到AL中
    	INT 21H
    	push ax
    	CALL CRLF
    	pop ax
    	SUB AL,30H
    	CMP AL,1
    	JE F1
    	CMP AL,2
    	JE F2
    	CMP AL,3
    	JE F3
    	CMP AL,4
    	JE F4
    	CMP AL,5
    	JE F5
    	CALL EXIT       ;按其他键退出
    
    F1:
    	CALL FUNC1
    	JMP P
    F2:
    	CALL FUNC2
    	JMP P
    F3:
    	CALL FUNC3
    	JMP P
    F4:
    	CALL FUNC4
    	JMP P
    F5:
    	CALL FUNC5
    	JMP P
    
    EXIT PROC NEAR
    	MOV AH,4CH
    	INT 21H
    EXIT ENDP
    
    CRLF PROC NEAR
    	MOV DL,0DH	;换行
    	MOV AH,02H
    	INT 21H
    	MOV DL,0AH
    	MOV AH,02H
    	INT 21H
    	RET
    CRLF ENDP
    
    FUNC1 PROC NEAR
    	LEA DX,MSG7
    	MOV AH,09H
    	INT 21H
    	MOV AH,01H
    	INT 21H
    	CMP AL,41H
    	JB RET1
    	CMP AL,5AH
    	JA RET1
    	ADD AL,20H
    	LEA DX,MSG8
    	MOV AH,09H
    	INT 21H
    	MOV DL,AL
    	MOV AH,02H
    	INT 21H
    RET1:	RET
    FUNC1 ENDP
    
    FUNC2 PROC NEAR
    	LEA DX,MSG7
    	MOV AH,09H
    	INT 21H
    	MOV AH,01H
    	INT 21H
    	CMP AL,61H
    	JB RET2
    	CMP AL,7AH
    	JA RET2
    	SUB AL,20H
    	LEA DX,MSG8
    	MOV AH,09H
    	INT 21H
    	MOV DL,AL
    	MOV AH,02H
    	INT 21H
    RET2:	RET
    FUNC2 ENDP
    
    FUNC3 PROC NEAR
    	LEA DX,MSG7
    	MOV AH,09H
    	INT 21H
    	MOV CH,4
    	MOV DL,0
    INPUT3:
    	MOV AH,1
    	INT 21H
    	CMP AL,30H
    	JB RET3
    	CMP AL,31H
    	JA RET3
    	JE L3            ;输入的是1
    	ROL DL,1
    	OR DL,0
    	JMP AGAIN3
    L3:	
    	ROL DL,1
    	OR DL,1
    AGAIN3:
    	DEC CH
    	JZ PRINT3
    	JMP INPUT3
    PRINT3:
    	CMP DL,0
    	JB RET3
    	CMP DL,9
    	JA COMPER3
    	ADD DL,30H
    	JMP HEX3
    COMPER3:
    	ADD DL,37H
    HEX3:
    	MOV AL,DL
    	LEA DX,MSG8
    	MOV AH,09H
    	INT 21H
    	MOV DL,AL 
    	MOV AH,02H
    	INT 21H
    RET3:	RET
    FUNC3 ENDP
    
    FUNC4 PROC NEAR
    	LEA DX,MSG7
    	MOV AH,09H
    	INT 21H
    INPUT4:
    	MOV AH,1
    	INT 21H
    	CMP AL,30H
    	JB EXIT4
    	CMP AL,39H
    	JA COMPER1
    	JMP CHANGE1    ;在0~9之间
    COMPER1:
    	CMP AL,41H
    	JB EXIT4
    	CMP AL,46H
    	JA COMPER2
    	JMP CHANGE2    ;在A-F之间
    COMPER2:
    	CMP AL,61H
    	JB EXIT4
    	CMP AL,66H
    	JA EXIT4
    	JMP CHANGE3    ;在a~f之间
    CHANGE1:
    	SUB AL,30H
    	JMP ENT
    CHANGE2:
    	SUB AL,37H
    	JMP ENT
    CHANGE3: 
    	SUB AL,57H
    	JMP ENT
    ENT:
    	LEA DX,MSG8
    	MOV AH,09H
    	INT 21H
    	MOV CH,8
    	MOV BL,AL	
    PRINT4:	
    	ROL BL,1
    	MOV DL,BL
    	AND DL,1
    	ADD DL,30H
    	MOV AH,02H
    	INT 21H
     	DEC CH
    	JZ EXIT4
    	JMP PRINT4
    EXIT4:	RET
    FUNC4 ENDP
    
    FUNC5 PROC NEAR
    	LEA DX,MSG7
    	MOV AH,09H
    	INT 21H
    INPUT5:
    	MOV AH,1
    	INT 21H
    	CMP AL,30H
    	JB EXIT5
    	CMP AL,39H
    	JA COMPER5
    	JMP CHANGE11    ;在0~9之间
    COMPER5:
    	CMP AL,41H
    	JB EXIT5
    	CMP AL,46H
    	JA COMPER6
    	JMP CHANGE22    ;在A-F之间
    COMPER6:
    	CMP AL,61H
    	JB EXIT5
    	CMP AL,66H
    	JA EXIT5
    	JMP CHANGE33    ;在a~f之间
    
    CHANGE11:
    	SUB AL,30H
    	JMP ENT5
    CHANGE22:
    	SUB AL,37H
    	JMP ENT5
    CHANGE33: 
    	SUB AL,57H
    	JMP ENT5
    ENT5:
    	MOV BL,AL
    	LEA DX,MSG8
    	MOV AH,09H
    	INT 21H
    	MOV AL,BL
    	MOV AH,0
    	MOV BL,10
    	DIV BL
    	MOV DH,AH
    	CMP AL,0
    	JE ONE
    	MOV DL,AL      ;十位数是1
    	ADD DL,30H
    	MOV AH,02H
    	INT 21H
    ONE:	                        ;十位数是0
    	MOV DL,DH
    	ADD DL,30H
    	MOV AH,02H
    	INT 21H
    EXIT5:	RET
    FUNC5 ENDP
    
    CODE ENDS
    END START

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[20200803171315547.png_pic_center]: /images/20230208/7d2a9e784e3f44348f73777ad32f253e.png
[20200803171432369.png_pic_center]: /images/20230208/69a4f676e53b4720b16a9dd89a9be985.png
[20200803171443873.png_pic_center]: /images/20230208/0af7492bae6b4d35aed44d3b2d803e14.png
[20200803171452734.png_pic_center]: /images/20230208/56052cf0cf0b4f40a562a64dc0f734e4.png
[20200803171459651.png_pic_center]: /images/20230208/e925d2174d974ed7b2c114719bf610cf.png