华工微机实验二数码转码编程及程序调试(免费版).docx

实验二数码转码编程及程序调试本版为免费版，源自百度文库用户lengjj914 1.将ASCII码表示的十进制数转换为二进制数。STACK SEGMENT STACK STACK DB 100 DUP(?)STACK ENDSASSUME CS:CODE,SS:STACKCODESEGMENTORG 2000HSTART:MOV CX,4H MOV BX,0AHXOR AH,AH MOV SI,3500H MOV DI,3510H MOV AL,BYTE PTRSI SUB AL,30HAGAIN:MUL BXINC SISUB BYTE PTRSI,30HCLCADD AL,BYTE PTRSIADC AH,0LOOP AGAINEXIT: MOV DI,AXMOV AX,4C00HINT 21HCODE ENDS END START2.将从键盘输入的五位十进制数的ASCII码存在3500起始的内存单元中。把它转换成BCD码后，再按位分别存入350A起始的内存单元内。若输入的不是十进制的ASCII码，则显示FF.STACKSEGMENT STACK STACKDB 100 DUP(?)STACKENDSCODESEGMENTASSUME CS:CODE,SS:STACKORG 2000HSTART:MOV SI,3500H MOV DI,350AH MOV CX,0005HAGAIN: MOV DL,0FFH MOV AL,BYTE PTRSI CMP AL,39H JA ERROR CMP AL,30H JB ERROR MOV BL,30H SUB AL,BL MOV DI,AL JMP EXITERROR: MOV DI,DLEXIT: INC SI INC DI LOOP AGAIN MOV AX,4C00H INT 21HCODE ENDS END START3. 将十六位二进制数转换为ASCII码表示的十进制数。STACKSEGMENT STACK STACKDB 100 DUP(?)STACKENDSCODE SEGMENTASSUME CS:CODE,SS:STACKORG 2000HSTART: MOV DI,3500HMOV AX,DI MOV SI,3514H INC SIAGAIN: DEC SI MOV DX,0000H MOV BX,000AH DIV BX ADD DL,30H MOV SI,DL CMP AX,0H JNE AGAINAGAIN1: DEC SI MOV DL,30H MOV SI,DL CMP SI,3510H JNE AGAIN1 MOV AX,4C00H INT 21HCODE ENDS END START4. 十六进制数转换为ASCII码。STACKSEGMENT STACK STACKDB 100 DUP(?)STACKENDSCODESEGMENTASSUME CS:CODE,SS:STACKORG 2000HSTART:MOV CX,0004HMOV DI,350AHMOV SI,3500HMOV DX,SIAGAIN: MOV AX,DXAND AX,000FH CMP AL,09H JB ZERO JMP SEVENZERO: ADD AL,30H JMP EXITSEVEN: ADD AL,37HEXIT: MOV DI,AL INC DI PUSH CX MOV CL,04H SHR DX,CL POP CX LOOP AGAINMOV AX,4C00H INT 21HCODE ENDS END START5. BCD码转换为二进制码STACKSEGMENT STACK STACKDB 100 DUP(?)STACKENDSCODESEGMENTASSUME CS:CODE,SS:STACKORG 2000HSTART: MOV SI,3500HMOV DI,3510HMOV CX,0008HAGAIN: MOV AL,BYTE PTRSI MOV BL,0AHMUL BLINC SIMOV AH,00HMOV DL,BYTE