北京理工大学汇编语言上机考试试题和代码.docx
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- 上传时间:2023-02-07
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北京理工大学汇编语言上机考试试题和代码.docx
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北京理工大学汇编语言上机考试试题和代码
北京理工大学汇编上机试题和代码
1.请任意输入一个字符串,将该串倒序后在屏幕上显示。
DATASSEGMENT
BUF1DB0FFH
DB?
DB0FFHDUP(?
)
BUF2DB0DH,0AH,0FDHDUP(?
)
DATASENDS
CODESSEGMENT
ASSUMECS:
CODES,DS:
DATAS
START:
MOVAX,DATAS
MOVDS,AX
LEADX,BUF1
MOVAH,0AH
INT21H
MOVAX,0
MOVAL,BUF1[1]
LEASI,BUF1[1]
ADDSI,AX
LEADI,BUF2[2]
MOVCX,0
MOVCL,BUF1[1]
L:
MOVAL,[SI]
MOV[DI],AL
DECSI
INCDI
LOOPL
MOVBYTEPTR[DI],'$'
LEADX,BUF2
MOVAH,09H
INT21H
MOVAH,4CH
INT21H
CODESENDS
ENDSTART
取巧:
DATASEGMENT
DB512DUP('$');定义可输入的字符个数
BUFDB'$'
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA
START:
MOVAX,DATA
MOVDS,AX
MOVBX,OFFSETBUF;指针指向待显示字符串尾部
AGAIN:
MOVAH,01;输入字符
INT21H
CMPAL,0DH;是回车吗
JEDISP;是,转显示
DECBX;指针减1
MOV[BX],AL;存入输入的字符
JMPAGAIN;继续输入
DISP:
MOVDX,BX;定位待显示字符串首地址
MOVAH,09
INT21H;显示
MOVAH,4CH;DOS返回
INT21H
CODEENDS
ENDSTART
2.请任意输入一个字符串,统计其中空格和A的个数,并将结果显示在屏幕上。
DATASEGMENT
BUFDB0FFH
DB?
DB0FFHDUP(?
)
OUTPUTDB0DH,0AH,'A=000'
DB0DH,0AH,'SPACE=000','$'
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA
START:
MOVAX,DATA
MOVDS,AX
LEADX,BUF
MOVAH,0AH
INT21H
LEASI,BUF[2]
MOVCX,0
MOVCL,BUF[1]
L:
CMPBYTEPTR[SI],'A'
JNENOTA
CMPOUTPUT[10],'9'
JECAR1
INCOUTPUT[10]
JMPNEXT
CAR1:
CMPOUTPUT[9],'9'
JECAR2
MOVOUTPUT[10],'0'
INCOUTPUT[9]
JMPNEXT
CAR2:
MOVOUTPUT[10],'0'
MOVOUTPUT[9],'0'
INCOUTPUT[8]
JMPNEXT
NOTA:
CMPBYTEPTR[SI],''
JNENEXT
CMPOUTPUT[21],'9'
JECSR1
INCOUTPUT[21]
JMPNEXT
CSR1:
CMPOUTPUT[20],'9'
JECSR2
MOVOUTPUT[21],'0'
INCOUTPUT[20]
JMPNEXT
CSR2:
MOVOUTPUT[21],'0'
MOVOUTPUT[20],'0'
INCOUTPUT[19]
JMPNEXT
NEXT:
INCSI
LOOPL
LEADX,OUTPUT
MOVAH,09H
INT21H
MOVAX,4C00H
INT21H
CODEENDS
END
3.请任意输入一个字符串,将其中的空格全部删除,并将结果显示在屏幕上。
DATASEGMENT
BUF1DB0FFH
DB?
DB0FFHDUP('?
')
BUF2DB0DH,0AH,0FDHDUP('?
')
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA
START:
MOVAX,DATA
MOVDS,AX
LEADX,BUF1
MOVAH,0AH
INT21H
MOVCX,0
MOVCL,BUF1[1]
LEASI,BUF1[2]
LEADI,BUF2[2]
L:
CMPBYTEPTR[SI],''
JEM
MOVAL,[SI]
MOV[DI],AL
INCDI
M:
INCSI
LOOPL
MOVBYTEPTR[DI],'$'
LEADX,BUF2
MOVAH,09H
INT21H
MOVAX,4C00H
INT21H
CODEENDS
END
4.请任意输入一个字符串,将其中A换成B,并将结果显示在屏幕上。
DATASEGMENT
BUFDB0FFH
DB?
DB0FFHDUP('?
')
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA
START:
MOVAX,DATA
MOVDS,AX
LEADX,BUF
MOVAH,0AH
INT21H
MOVCX,0
MOVCL,BUF[1]
LEASI,BUF[2]
L:
CMPBYTEPTR[SI],'A'
JNEM
MOVBYTEPTR[SI],'B'
M:
INCSI
LOOPL
MOVWORDPTR[SI],0D0AH
MOVBYTEPTR[SI+2],'$'
LEADX,BUF[2]
MOVAH,09H
INT21H
MOVAX,4C00H
INT21H
CODEENDS
END
5.请任意输入一个字符串,将其中A换成CC,并将结果显示在屏幕上。
DATASEGMENT
BUF1DB0FFH
DB?
DB0FFHDUP('?
')
BUF2DB0DH,0AH,0FDHDUP('?
')
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA
START:
MOVAX,DATA
MOVDS,AX
LEADX,BUF1
MOVAH,0AH
INT21H
MOVCX,0
MOVCL,BUF1[1]
LEASI,BUF1[2]
LEADI,BUF2[2]
L:
CMPBYTEPTR[SI],'A'
JNEM
MOVWORDPTR[DI],'CC'
ADDDI,2
INCSI
JMPN
M:
MOVAL,[SI]
MOV[DI],AL
INCDI
INCSI
N:
LOOPL
MOVBYTEPTR[DI],'$'
LEADX,BUF2
MOVAH,09H
INT21H
MOVAX,4C00H
INT21H
CODEENDS
END
6.请任意输入一个字符串,将其中大写字母换成小写字母,并将结果显示在屏幕上。
DATASEGMENT
BUF1DB0FFH
DB?
DB0FFHDUP('?
')
BUF2DB0DH,0AH,0FDHDUP('?
')
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA
START:
MOVAX,DATA
MOVDS,AX
LEADX,BUF1
MOVAH,0AH
INT21H
MOVCX,0
MOVCL,BUF1[1]
LEASI,BUF1[2]
LEADI,BUF2[2]
L:
MOVAL,[SI]
MOV[DI],AL
CMPBYTEPTR[DI],'a'
JNBM
ORBYTEPTR[DI],00100000B
M:
INCDI
INCSI
N:
LOOPL
MOVBYTEPTR[DI],'$'
LEADX,BUF2
MOVAH,09H
INT21H
MOVAX,4C00H
INT21H
CODEENDS
END
7.请任意输入一个字符串,将其中的英文字母全部删除,并将结果显示在屏幕上。
DATASEGMENT
BUF1DB0FFH
DB?
DB0FFHDUP('?
')
BUF2DB0DH,0AH,0FDHDUP('?
')
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA
START:
MOVAX,DATA
MOVDS,AX
LEADX,BUF1
MOVAH,0AH
INT21H
MOVCX,0
MOVCL,BUF1[1]
LEASI,BUF1[2]
LEADI,BUF2[2]
L:
CMPBYTEPTR[SI],'A'
JNBM
MOVAL,[SI]
MOV[DI],AL
INCSI
INCDI
JMPNEXT
M:
CMPBYTEPTR[SI],'z'
JNAN
MOVAL,[SI]
MOV[DI],AL
INCSI
INCDI
JMPNEXT
N:
CMPBYTEPTR[SI],'a'
JBH
INCSI
JMPNEXT
H:
CMPBYTEPTR[SI],'Z'
JAO
INCSI
JMPNEXT
O:
MOVAL,[SI]
MOV[DI],AL
INCSI
INCDI
JMPNEXT
NEXT:
LOOPL
MOVBYTEPTR[DI],'$'
LEADX,BUF2
MOVAH,09H
INT21H
MOVAX,4C00H
INT21H
CODEENDS
END
8.现有一组字符串为data,name,time,file,code,path,user,exit,quit,text,请编写程序从键盘输入4个字符的字符串,若存在将其修改为disk,并在显示器上显示。
DATASSEGMENT
BUFDB05H
DB?
DB05HDUP('?
')
LIBDB0DH,0AH,'data'
DB0DH,0AH,'name'
DB0DH,0AH,'time'
DB0DH,0AH,'file'
DB0DH,0AH,'code'
DB0DH,0AH,'path'
DB0DH,0AH,'user'
DB0DH,0AH,'exit'
DB0DH,0AH,'quit'
DB0DH,0AH,'text','$'
REPLACEDB'disk'
DATASENDS
CODESSEGMENT
ASSUMECS:
CODES,DS:
DATAS,ES:
DATAS
START:
MOVAX,DATAS
MOVDS,AX
MOVES,AX
LEADX,BUF
MOVAH,0AH
INT21H
LEASI,BUF[2]
LEADI,LIB[2]
MOVBX,DI
MOVCX,10
L:
CLD
PUSHCX
MOVCX,4
REPZCMPSB
JNZN
POPCX
MOVSI,BX
LEADI,REPLACE
MOVCX,4
M:
MOVAL,[DI]
MOV[SI],AL
INCDI
INCSI
LOOPM
JMPEXIT
N:
ADDBX,6
MOVDI,BX
LEASI,BUF[2]
LOOPL
EXIT:
LEADX,LIB
MOVAH,09H
INT21H
MOVAH,4CH
INT21H
CODESENDS
ENDSTART
9.现有一组字符串为ram,yes,red,the,get,for,and,key,not,may,请编写程序将他们按ASCII大小排序,并在显示器上显示。
DATASEGMENT
LIBDB'ram',0DH,0AH
DB'yes',0DH,0AH
DB'red',0DH,0AH
DB'the',0DH,0AH
DB'get',0DH,0AH
DB'for',0DH,0AH
DB'and',0DH,0AH
DB'key',0DH,0AH
DB'not',0DH,0AH
DB'may',0DH,0AH,'$'
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA,ES:
DATA
START:
MOVAX,DATA
MOVDS,AX
MOVDI,9
A:
MOVCX,DI
LEASI,LIB
B:
MOVAL,[SI]
CMPAL,[SI+5]
PUSHSI
JAH
JEO
JBR
O:
INCSI
MOVAL,[SI]
CMPAL,[SI+5]
JAH
JBR
JEO
H:
POPSI
PUSHSI
MOVBX,3
M:
MOVAL,BYTEPTR[SI]
MOVAH,BYTEPTR[SI+5]
MOVBYTEPTR[SI],AH
MOVBYTEPTR[SI+5],AL
INCSI
DECBX
JNZM
R:
POPSI
ADDSI,5
LOOPB
DECDI
JNZA
LEADX,LIB
MOVAH,09H
INT21H
MOVAH,4CH
INT21H
CODEENDS
ENDSTART
10.现有一组字符串为data,name,time,file,code,path,user,exit,quit,text,请编写程序从键盘输入4个字符的字符串,若存在将其删除,并在显示器上显示。
DATASEGMENT
BUFDB05H
DB?
DB05HDUP(?
)
LIBDB0DH,0AH,'data','$'
DB0DH,0AH,'name','$'
DB0DH,0AH,'time','$'
DB0DH,0AH,'file','$'
DB0DH,0AH,'code','$'
DB0DH,0AH,'path','$'
DB0DH,0AH,'user','$'
DB0DH,0AH,'exit','$'
DB0DH,0AH,'quit','$'
DB0DH,0AH,'test','$'
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA,ES:
DATA
START:
MOVAX,DATA
MOVDS,AX
MOVES,AX
LEADX,BUF
MOVAH,0AH
INT21H
LEASI,BUF[2]
LEADI,LIB[2]
MOVDL,10
L:
PUSHSI
PUSHDI
MOVCX,4
CLD
REPZCMPSB
MOVAX,DI
JEDEL
POPDI
POPSI
ADDDI,7
DECDL
JNZL
JMPEXIT
DEL:
MOVBX,AX
SUBBX,6
EXIT:
LEADX,LIB
MOVCX,10
M:
PUSHDX
CMPDX,BX
JEN
MOVAH,09H
INT21H
N:
POPDX
ADDDX,7
LOOPM
MOVAH,4CH
INT21H
CODEENDS
ENDSTART
11.现有一组字符串为data,name,time,file,code,path,user,exit,quit,text,请编写程序将上述字符串排序(升序)并插入disk使其人仍然有序,并在显示器上显示。
DATASEGMENT
BUFDB0FFH
DB?
DB0DH,0AH,0FDHDUP('?
')
tishiDB0DH,0AH,'PLEASEINPUTANOTHERSTRING:
$'
EXTRADB05H
DB?
DB5DUP(?
)
LIBDB0DH,0AH,'data'
DB0DH,0AH,'name'
DB0DH,0AH,'time'
DB0DH,0AH,'file'
DB0DH,0AH,'code'
DB0DH,0AH,'path'
DB0DH,0AH,'user'
DB0DH,0AH,'exit'
DB0DH,0AH,'quit'
DB0DH,0AH,'text','$'
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA,ES:
DATA
START:
MOVAX,DATA
MOVDS,AX
MOVDI,9
CALLSORT
CALLOUTPUT
CALLINSERT
MOVDI,10
CALLSORT
CALLOUTPUT
JMPEXIT
SORTPROCNEAR
A:
MOVCX,DI
LEASI,LIB[2]
B:
MOVAL,[SI]
CMPAL,[SI+6]
PUSHSI
JAH
JEO
JBR
O:
INCSI
MOVAL,[SI]
CMPAL,[SI+6]
JAH
JBR
JEO
H:
POPSI
PUSHSI
MOVBX,4
M:
MOVAL,BYTEPTR[SI]
MOVAH,BYTEPTR[SI+6]
MOVBYTEPTR[SI],AH
MOVBYTEPTR[SI+6],AL
INCSI
DECBX
JNZM
R:
POPSI
ADDSI,6
LOOPB
DECDI
JNZA
RET
SORTENDP
OUTPUTPROCNEAR
LEADX,LIB
MOVAH,09H
INT21H
RET
OUTPUTENDP
INSERTPROCNEAR
LEADX,TISHI
MOVAH,9
INT21H
LEADX,EXTRA
MOVAH,0AH
INT21H
MOVBYTEPTRLIB[60],0DH
MOVBYTEPTRLIB[61],0AH
MOVBH,4
MOVSI,62
MOVDI,2
LOOP1:
MOVAL,EXTRA[DI]
MOVLIB[SI],AL
INCSI
INCDI
DECBH
JNELOOP1
MOVAL,'$'
MOVLIB[SI],AL
;LEADX,LIB
;MOVAH,09H
;INT21H
RET
INSERTENDP
EXIT:
MOVAH,4CH
INT21H
CODEENDS
ENDSTART
12.键盘输入一个十进制数,以十六进制的形式输出。
;
;键盘输入一个十进制数,以十六进制的形式输出
DATASEGMENT
DATAENDS
CODESEGMENT
ASSUMECS:
CODE,DS:
DATA,ES:
DATA
START:
MOVAX,DATA
MOVDS,AX
MOVBX,0
INPUT:
MOVAH,1
INT21H
CMPAL,0DH
JZOUTPUT
SUBAL,30H
MOVAH,0
XCHGAX,BX;这一段称之为“累和”
MOVCX,10
MULCX
ADDAX,BX
XCHGAX,BX
JMPINPUT
OUTPUT:
MOVDI,4
MOVCL,4
YIWEI:
ROLBX,CL
MOVDX,BX
ANDDL,00001111B
CMPDL,9
JAZIMU
ADDDL,30H
JMPL
ZIMU:
ADDDL,37H;十六进制移位ROLCL=4输出字母A-F37H
L:
MOVAH,2
INT21H
DECDI
JNEYIWEI
MOVAH,4CH
INT21H
CODEENDS
ENDSTART
13.键盘输入一个十进制数,以二进制的形式输出。
CODESSEGMENT
ASSUMECS:
CODES
START:
NEXT:
MOVBX,0
CALLINPUT
CALLOUTPUT
JMPNEXT
INPUTPROCNEAR
SHURU:
MOVAH,01H
INT21H
CBW
CMPAX,0DH
JERETURN
CMPAX,'0'
JBEXIT
CMPAX,'9'
JAEXIT
CALLTRANSFORM
JMPSHURU
RETUR
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