微机原理与接口技术设计实验

实验一：编写程序，比较两个字符串STRING1和STRING2所含的字符是否相同，若字符相同则显示“Match”,否则显示“No Match”参考程序：DATA SEGMENTSTRING1 DB 'HAPPY ASM'LEN EQU $-STRING1STRING2 DB 'HAPPY ASM'MESSAGE1 DB 'MATCH',0DH,0AH,'$'MESSAGE2 DB 'NO MATCH',0DH,0AH,'$'DATA ENDSCODE SEGMENTASSUME CS:CODE,DS:DATA,ES:DATASTART:MOV AX,DATAMOV DS,AXMOV ES,AXLEA SI,STRING1LEA DI,STRING2MOV CX,LENCOMPARE:MOV AL,[SI]MOV BL,[DI]CMP AL,BLJNE DISMATCHINC SIINC DILOOP COMPAREMATCH:LEA DX,MESSAGE1JMP DISPDISMATCH:LEA DX,MESSAGE2DISP: MOV AH,09HINT 21HMOV AH,4CHINT 21HCODE ENDSEND START实验二：编写程序，从键盘输入一串字符，以‘$’或回车结束，将其中的小写字母转变为大写字母，其余字符不做转换，原样输出，结果显示在屏幕上。

参考程序：DATA SEGMENTBUF DB 50DB ?DB 50 DUP(?)INPUTSTRING DB 'PLEASE INPUT A STRING:','$' OUTPUTSTRING DB 'OUTPUTSTRING IS:','$' ENTERSTRING DB 0DH,0AH,'$'DATA ENDSCODE SEGMENTASSUME CS:CODE,DS:DATASTART:MOV AX,DATAMOV DS,AXLEA DX,INPUTSTRINGMOV AH,09HINT 21HLEA DX,BUFMOV AH,0AHINT 21HLEA DX,ENTERSTRINGMOV AH,09HINT 21HLEA BX,BUFADD BX,2NEXT1:MOV AL,[BX]INC BXCOMPARE:CMP AL,24HJZ DISPCMP AL,61HJB NEXT1CMP AL,7AHJA NEXT1SUB AL,20HMOV [BX-1],ALJMP NEXT1DISP:LEA DX,OUTPUTSTRINGMOV AH,09HINT 21HLEA DX,BUF+2MOV AH,09HINT 21HMOV AH,4CHINT 21HCODE ENDSEND START实验三：利用子程序方法编写程序，设有10个无符号数的字节序列，查找该序列中的最大值和最小值，并把结果显示在屏幕上。

参考程序1：（针对一位10进制数）STACK SEGMENT STACKDW 256 DUP(?)TOP LABEL WORDSTACK ENDSDATA SEGMENTBUF DB 00H,01H,02H,03H,04HDB 05H,06H,07H,08H,09HCOUNT EQU $-BUFENTERSTRING DB 0DH,0AH,'$'MAXSTRING DB 'THE MAXIMUN NUMBER IS:','$'MINSTRING DB 'THE MINIMUN NUMBER IS:','$'DATA ENDSCODE SEGMENTASSUME CS:CODE,DS:DATA,SS:STACKSTART:MOV AX,DATAMOV DS,AXMOV AX,STACKMOV SS,AXLEA SP,TOPMOV SI,OFFSET BUFMOV CX,COUNTCALL BRANCHPUSH AXLEA DX,MAXSTRINGMOV AH,09HINT 21HPOP AXMOV DL,AHADD DL,30HPUSH AXMOV AH,02HINT 21HLEA DX,ENTERSTRINGMOV AH,09HINT 21HLEA DX,MINSTRINGMOV AH,09HINT 21HPOP AXMOV DL,ALADD DL,30HMOV AH,02HINT 21HMOV AH,4CHINT 21HBRANCH PROC NEARJCXZ NEXT4PUSH SIPUSH CXPUSH BXMOV BH,[SI]MOV BL,BHCLDNEXT1: L ODSBCMP AL,BHJBE NEXT2MOV BH,ALJMP NEXT3NEXT2: C MP AL,BLJAE NEXT3MOV BL,ALNEXT3: L OOP NEXT1MOV AX,BXPOP BXPOP CXPOP SINEXT4: R ETBRANCH ENDPCODE ENDSEND START参考程序二：（针对两位十六进制数或无符号数）STACK SEGMENT STACKDW 256 DUP(?)TOP LABEL WORDSTACK ENDSDATA SEGMENTBUF DB 0FFH,55H,33H,44H,54HDB 45H,46H,47H,48H,1AHCOUNT EQU $-BUFENTERSTRING DB 0DH,0AH,'$'MAXSTRING DB 'THE MAXIMUN NUMBER IS:','$' MINSTRING DB 'THE MINIMUN NUMBER IS:','$' DATA ENDSCODE SEGMENTASSUME CS:CODE,DS:DATA,SS:STACK START:MOV AX,DATAMOV DS,AXMOV AX,STACKMOV SS,AXLEA SP,TOPMOV SI,OFFSET BUFMOV CX,COUNTCALL BRANCHMOV DX,AXPUSH DXLEA DX,MAXSTRINGMOV AH,09HINT 21HPOP DXMOV AL,DHPUSH DXCALL DISPGAO4POP DXMOV AL,DHPUSH DXCALL DISPDI4LEA DX,ENTERSTRINGMOV AH,09HINT 21HLEA DX,MINSTRINGMOV AH,09HINT 21HPOP DXMOV AL,DLPUSH DXCALL DISPGAO4POP DXMOV AL,DLCALL DISPDI4MOV AH,4CHINT 21HBRANCH PROC NEARJCXZ NEXT4PUSH SIPUSH CXPUSH BXMOV BH,[SI]MOV BL,BHCLDNEXT1: L ODSBCMP AL,BHJBE NEXT2MOV BH,ALJMP NEXT3NEXT2: C MP AL,BLJAE NEXT3MOV BL,ALNEXT3: L OOP NEXT1MOV AX,BXPOP BXPOP CXPOP SINEXT4: R ETBRANCH ENDPDISPDI4 PROC NERR ；低四位AND AL,0FHMOV DL,ALCMP DL,9JLE NUM1ADD DL,7NUM1: ADD DL,30HMOV AH,02HINT 21HRETDISPDI4 ENDPDISPGAO4 PROC NERR ；高四位SAR AL,4AND AL,0FHMOV DL,ALCMP DL,9JLE NUM2ADD DL,7NUM2: ADD DL,30HMOV AH,02HINT 21HRETDISPGAO4 ENDPCODE ENDSEND START实验四：8255交通灯参考程序：MY8255_A EQU 288H ;8255的A口地址MY8255_B EQU 289H ;8255的B口地址MY8255_C EQU 28AH ;8255的C口地址MY8255_MODE EQU 28BH ;8255的控制寄存器地址STACK1 SEGMENT STACKDW 256 DUP(?)STACK1 ENDSDATA SEGMENTLA DB ? ;定义数据变量LB DB ?DATA ENDSCODE SEGMENTASSUME CS:CODE,DS:DATASTART: MOV AX,DATAMOV DS,AXMOV DX,MY8255_MODE ;定义8255工作方式MOV AL,80H ;工作方式0，A口和B口为输出OUT DX,ALL1: MOV DX,MY8255_A ;写A口发出的数据，1组绿灯亮,2组红灯亮MOV AL,24HOUT DX,ALCALL DALLY1MOV CX,05HL2: MOV DX,MY8255_A ;写A口发出的数据，1组黄灯亮,2组红灯亮MOV AL,44HOUT DX,ALCALL DALLY2MOV DX,MY8255_A ;写A口发出的数据，1组黄灯灭,2组红灯亮MOV AL,04HOUT DX,ALCALL DALLY2LOOP L2L3: MOV DX,MY8255_A ;写A口发出的数据，1组绿灯亮,2组红灯亮MOV AL,81HOUT DX,ALCALL DALLY1MOV CX,05HL4: MOV DX,MY8255_A ;写A口发出的数据，1组黄灯亮,2组红灯亮MOV AL,82HOUT DX,ALCALL DALLY2MOV DX,MY8255_A ;写A口发出的数据，1组黄灯灭,2组红灯亮MOV AL,80HOUT DX,ALCALL DALLY2LOOP L4L5: MOV AH,01H ;判断是否有按键按下，调用功能号1 INT 16H ;ROM BIOS 功能调用JZ L1 ;无按键则跳回继续循环，有则退出QUIT: MOV AX,4C00H ;结束程序退出; INT 21H ;DOS 系统功能调用DALLY1 PROC NEAR ;软件延时子程序，东西方向红灯亮，南北方向绿灯亮PUSH CXPUSH DIMOV CX,3FFHY1: MOV DI,9000HX1: DEC DIJNZ X1LOOP Y1POP DIPOP CXRETDALLY1 ENDPDALLY2 PROC NEAR ;软件延时子程序，黄灯闪烁（即亮与灭）的时间间隔，PUSH CXPUSH DIMOV CX,3FHY2: MOV DI,9000HX2: DEC DIJNZ X2LOOP Y2POP DIPOP CXRETDALLY2 ENDPCODE ENDSEND START参考程序2：流水灯MY8255_A EQU 288H ;8255的A口地址MY8255_B EQU 289H ;8255的B口地址MY8255_C EQU 28AH ;8255的C口地址MY8255_MODE EQU 28BH ;8255的控制寄存器地址STACK1 SEGMENT STACKDW 256 DUP(?)STACK1 ENDSDATA SEGMENTLA DB ? ;定义数据变量DATA ENDSCODE SEGMENTASSUME CS:CODE,DS:DATASTART: MOV AX,DATAMOV DS,AXMOV DX,MY8255_MODE ;定义8255工作方式MOV AL,80H ;工作方式0，A口和B口为输出OUT DX,ALMOV CX,0FFFFHMOV BL,80HL1: MOV DX,MY8255_A ;写A口发出的数据MOV AL,BLOUT DX,ALCALL DALLY1ROR BL,1LOOP L1QUIT: MOV AX,4C00H ;结束程序退出INT 21H ;DOS 系统功能调用DALLY1 PROC NEAR ;软件延时子程序，东西方向红灯亮，南北方向绿灯亮PUSH CXPUSH DIMOV CX,3FHY1: MOV DI,9000HX1: DEC DIJNZ X1LOOP Y1POP DIPOP CXRETDALLY1 ENDPCODE ENDSEND START实验五：8254一赫兹方波输出参考程序：MY8254_COUNT0 EQU 280H ;8254计数器0端口地址MY8254_COUNT1 EQU 281H ;8254计数器1端口地址MY8254_COUNT2 EQU 282H ;8254计数器2端口地址MY8254_MODE EQU 283H ;8254控制寄存器端口地址STACK1 SEGMENT STACKDW 256 DUP(?)STACK1 ENDSCODE SEGMENTASSUME CS:CODESTART: MOV DX,MY8254_MODE ;初始化8254工作方式MOV AL,37H ;计数器0，方式3OUT DX,ALMOV DX,MY8254_COUNT0 ;装入计数初值MOV AL,00 ;1000分频OUT DX,ALMOV AL,10OUT DX,ALMOV DX,MY8254_MODE ;初始化8254工作方式MOV AL,77H ;计数器1，方式3OUT DX,ALMOV DX,MY8254_COUNT1 ;装入计数初值MOV AL,00 ;1000分频OUT DX,ALMOV AL,10OUT DX,ALQUIT: MOV AX,4C00H ;结束程序退出INT 21HCODE ENDSEND START实验六：AD转换(0809)参考程序：CODE SEGMENTASSUME CS:CODESTART:MOV DX,298H ;启动A/D转换器OUT DX,ALMOV CX,0FFFFHDELAY:LOOP DELAYMOV DX,298HIN AL,DXPUSH DXPUSH AXCALL DISPGAO4POP AXPOP DXCALL DISPDI4PUSH DXMOV AH,06HMOV DL,0FFHINT 21HPOP DXJE STARTMOV AH,4CHINT 21HDISPDI4 PROC NERR ；低四位AND AL,0FHMOV DL,ALCMP DL,9JLE NUM1ADD DL,7NUM1: ADD DL,30HMOV AH,02HINT 21HRETDISPDI4 ENDPDISPGAO4 PROC NERR ；高四位SAR AL,4AND AL,0FHMOV DL,ALCMP DL,9JLE NUM2ADD DL,7NUM2: ADD DL,30HMOV AH,02HINT 21HRETDISPGAO4 ENDPCODE ENDSEND START。