微机原理-数码转换实验报告(共12页).doc

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1、精选优质文档-倾情为你奉上 实验九 数码转换一、实验目的1、掌握计算机常用数据编码之间的相互转换方法。2、进一步熟悉DEBUG软件的使用方法。二、实验内容1、ACSII码转换为非压缩型BCD码2、BCD码转换为二进制码3、十六进制数转换为ASCII码三、实验1、ACSII码转换为非压缩型BCD码DATA SEGMENT PARA DATA DATA1 DB 8 DUP(?) DATA2 DB 8 DUP(?) DATA ENDSCODE SEGMENT ASSUME CS:CODE, DS:DATASTART: MOV AX,SEG DATA1 MOV DS,AX MOV DX,DATA MO

2、V AH,0AH INT 21H LEA SI,DATA1 MOV CL,SI+1 LEA DI,DATA2 ADD SI, 2CHK: MOV AL,SI+2 CMP AL, 0 JB L01 CMP AL, 9 JA L01 SUB AL,30H MOV BL,AL MOV DI, BL INC SI INC DI DEC CX JNZ CHKL01: MOV BL, 0FFH LOOP CHK MOV AH,4CH INT 21HCODE ENDS END START2、BCD码转换为二进制码DATA SEGMENTBCD DB 1,2,3,4,5A DW ?DATA ENDSSTACK

3、 SEGMENT PARA STACKSTACK STAPN DW 50 DUP(?)STACK ENDSCODE SEGMENT MAIN PROC FAR ASSUME DS:DATA,CS:CODE,SS:STACKSTART: MOV AX,DATA MOV DS,AX MOV AX,STACK MOV SS,AX CALL CONVERT MOV A,BX RETMAIN ENDPCONVERT PROC NEAR PUSH SI PUSH CX PUSH AX MOV SI,4L1:MOV AL,BCDSI CBW XCHG AX, BX MOV CX,10D MUL CX XCH

4、G AX,BX ADD BX,AX DEC SI JNZ L1 POP AX POP CX POP SIEXIT:MOV AH,4CH INT 21HCONVERT ENDPCODE ENDS END START3、十六进制数转换为ASCII码DATA SEGMENTDATA1 DW 2010HDATA2 DB 4 DUP(?)DATA ENDSSTACKS SEGMENT PARA STACK STACKSTACKS ENDS CODES SEGMENT ASSUME SS:STACKS,CS:CODES ASSUME DS:DATASSTART: MOV AX, DATA MOV DS,

5、AX LEA SI, DATA1 MOV AX, SI MOV CL, 12 SHR AX, CL MOV BL, AL CALL ASC MOV DATA2, BL CALL XS MOV AX, SI MOV CL, 8 SHR AX, CL AND AX, 000FH MOV BL, AL CALL ASC MOV DATA2+1, BL CALL XS MOV AX, SI MOV CL, 4 SHR AX, CL AND AX, 000FH MOV BL, AL CALL ASC MOV DATA2+2, BL CALL XS MOV AX, SI AND AX, 000FH MOV

6、 BL, AL CALL ASC MOV DATA2+3, BL CALL XS MOV AH, 4CH INT 21HASC PROC CMP BL, 0AH JC LP ADD BL, 07HLP: ADD BL, 30H RETASC ENDPXS PROC MOV DL, BL MOV AH, 02H INT 21H RETXS ENDPCODE ENDS END START4、六进制数转换为十进制DATAS SEGMENT STRING1 DB 0DH,0AH,$ STRING2 DB 0DH,0AH,$DATAS ENDSSTACKS SEGMENTSTACKS ENDSCODES

7、 SEGMENT ASSUME CS:CODES,DS:DATAS,SS:STACKSSTART: MOV AX,DATAS MOV DS,AX MOV DX,OFFSET STRING1 MOV AH,9 INT 21H MOV CL,10H MOV BX,0NEWCHAR: MOV AH,1 INT 21H SUB AL,30H JB DISP CBW XCHG AX,BX MOV CH,0 MUL CX XCHG AX,BX ADD BX,AX JNC NEWCHARDISP: MOV DX,OFFSET STRING2 MOV AH,9 INT 21H MOV CX,10000AGAI

8、N: MOV DX,0 MOV AX,BX DIV CX MOV BX,DX MOV DL,AL ADD DL,30H CMP DL,39H JLE NEXT ADD DL,7HNEXT: MOV AH,2 INT 21H MOV DX,0 MOV AX,CX MOV CX,10 DIV CX MOV CX,AX CMP CX,0 JNZ AGAIN MOV AH,4CH INT 21HCODES ENDS END START5、十进制转换成七段码DATA SEGMENTDATA1 DB 3,4TABLE DB 23H,56H,42H,75H,00H,24H,67H,39H,20HDATA2

9、DB 2 DUP(?)DATA ENDSCODE SEGMENT ASSUME CS:CODE, DS:DATAST: MOV DI, OFFSET BUFDA MOV CL, 80H MOV BX, OFFSET TABLEDISI: MOV BL, DI+0 MOV AX, BX XLAT MOV DX, PORTSEG OUT DX, AL MOV AL, CL MOV DX, PORTBIT OUT DX, AL PUSH CX MOV CX, 30HDELAY: LOOP DELAY POP CX CMP CL, 20H JZ QUIT INC DI SHR CL, 1 JMP DISIQUITCODE ENDSEND ST专心-专注-专业