第九十九题：
请编制程序，其功能是：内存中连续存储20个ASCII如果，如果是大写字母，A~Z请将之间的字符转换为相应的小写字符；如果是其他字符，则不转换。
例如：
内存中有 31H('1'), 32H('2'),61H('a')41H('A'),42H('B')…
结果为 31H,32H,61H,61H(a),62H(b)…
给出了一些程序， 原始数据由过程组成LOAD从文件INPUT1.DAT中读入SOURCE在开始的内存单元中。RESULT从过程开始存储SAVE保存到文件OUTPUT1.DAT中。
填空BEGIN和END已给出的源程序使其完整(空白已用横线标出，每行空白一般只需一个指令， 但也可以使用相当多功能的指令)，或删除BEGIN和END完成所需功能的原始代码和自编程。
程序必须汇编和编制IO.OBJ链接产生PROG1.EXE执行文件，最终操作程序产生结果(无结果或结果不正确者不得分)。如果在调试中发现整个程序中存在错误， 请修改。
试题程序：
EXTRN LOAD:FAR,SAVE:FAR
N EQU 20
STAC SEGMENT STACK
DB 128 DUP(?)
STAC ENDS
DATA SEGMENT
SOURCE DB N DUP(?)
RESULT DB N DUP(0)
NAME0 DB 'INPUT1.DAT',0
NAME1 DB 'OUTPUT1.DAT',0
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA,SS:STAC
START PROC FAR
PUSH DS
XOR AX,AX
PUSH AX
MOV AX,DATA
MOV DS,AX
LEA DX,SOURCE ;数据区起始地址
LEA SI,NAME0 ;原始数据文件名
MOV CX,N ;字节数
CALL LOAD ;从'INPUT1.DAT中读数据
;****BEGIN****
LEA SI,SOURCE
LEA DI,RESULT
MOV CX,N
NEXT: MOV AL,[SI]
CMP AL,'A'
JB ________________
CMP AL,_____________
J_______ LOWER2
_________________________
LOWER2: MOV [DI],___________
_________________________
INC ________________
________ NEXT
;****END****
LEA DX,RESULT ;数据区首址结果
LEA SI,NAME1 ;结果文件名
MOV CX,N ;字节数
CALL SAVE ;将结果保存到文件中
RET
START ENDP
CODE ENDS
END START
第一百题：
1、请编制程序。其功能是连续存储在内存中的20个8位符号（补码）由8位数组成A/D转换器采集的双极性信号(Xn)，现在需要对信号进行以下限度处理(处理后的信号记录为Yn)：
A、 Yn=-100 Xn < -100
B、 Yn= Xn | Xn|<=100
C、 Yn=100 Xn>100
例如：
Xn：67H,61H,8EH,38H…
Yn：64H,61H,9CH,38H…
给出了一些程序， 原始数据由过程组成LOAD从文件INPUT1.DAT中读入SOURCE在开始的内存单元中。RESULT开始存放,由过程SAVE保存到文件OUTPUT1.DAT中。
填空BEGIN和END已给出的源程序使其完整(空白已用横线标出，每行空白一般只需一个指令， 但也可以使用相当多功能的指令)，或删除BEGIN和END完成所需功能的原始代码和自编程。
程序必须汇编和编制IO.OBJ链接产生PROG1.EXE执行文件，最终操作程序产生结果(无结果或结果不正确者不得分)。如果在调试中发现整个程序中存在错误， 请修改。
试题程序：
EXTRN LOAD:FAR,SAVE:FAR
N EQU 20
MAX_VAL EQU 100
STAC SEGMENT STACK
DB 128 DUP(?)
STAC ENDS
DATA SEGMENT
SOURCE DB N DUP(?)
RESULT DB N DUP(0)
NAME0 DB 'INPUT1.DAT',0
NAME1 DB 'OUTPUT1.DAT',0
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA,SS:STAC
START PROC FAR
PUSH DS
XOR AX,AX
PUSH AX
MOV AX,DATA
MOV DS,AX
LEA DX,SOURCE ;数据区起始地址
LEA SI,NAME0 ;原始数据文件名
MOV CX,N ;字节数
CALL LOAD ;从'INPUT1.DAT中读数据
;****BEGIN****
LEA SI,SOURCE
LEA DI,RESULT
_______________________
NEXT: MOV AL,[SI]
CMP AL,-MAX_VAL
J_______ LESS
CMP AL,MAX_VAL
_______________________
MOV AL,MAX_VAL
JMP STORE
LESS: MOV AL,-MAX_VAL
STORE: MOV [DI],AL
_______________________
_______________________
_______________________
;****END****
LEA DX,RESULT ;数据区首址结果
LEA SI,NAME1 ;结果文件名
MOV CX,N ;字节数
CALL SAVE ;保存结果OUTPUT1.DAT'文件
RET
START ENDP
CODE ENDS
END START
0 0 0 1
0 0 0 0 0 0 0 1 1 0 1 0 0 0 1 0 0 1 1 0 0 1
0 1 0 1 0 0 0 0 0 1 0 1 1 1 1
1 0 1 1 0 1 1 1 1 1 0
1 0 0 0 1 0 0 1
1 0 0 0 0 0 1 0 0
1.40字节，符号，数组，分为正负数组，并要求数量
(1)MOV (2)00H (3)JMP MAIN3
(4)LOOP (5)[SI] (6)MAIN4
(7)INC BX
2.将10个无符号的8位格雷码转换为二进制
(1)PUSH CX (2)RCL (3)BH
(4)JNE SET ONE (5)BH (6)AND BH，01H
(7)POP CX
3.16位无符号排成升序
(1)2 (2)ADD DI，2 (3)NEXT0
(4)BX (5)SW (6)AX
(7)NEXT (8)DEC BX (9)JNZ
4、(x1 x2 x3 x4 x5)/5代替原数
(1)5 (2)CX (3)4
(4)MOV DX，0 (5)INC DI (6)INC SI
5.21个8位二有符号数，相邻差不超过-8-7。
(1)AL，[SI-2] (2)XOR BX，0FFH (3)Z
(4)SHL (5)AND AL，0FH (6)DEC DX
6、将0~9的ASCII代码转换为二进制，并将其转换为二进制SP转成$
(1)MOV SI，0 (2)MOV CX，N (3)MOV AL，SOURCE[SI]
(4)10H (5)INC DI (6)INC SI
(7)CHAN
7、对#和*之间的7个ASC代码进行异常或操作...
()JNZ (2)'*' (3)SEARCH1
(4)JNZ (5)13 (6)DEC BX
8、10个16位二进制,统计每个数中0的个数
(1)16 (2)SHL AX，1 (3)JB
(4)COUNT (5)BX，2 (6)[DI]，DH
9、L做逻辑尺
(1)LEA DI，RESULT (2)1 (3)TEST
(4)JP (5)SHL DX，1
10、求10个有符号字节的绝对值之和(字型),并到最大的数和地址
(1)NEG AL (2)ADC [DI+1] (3)ADC [DI+1]
(4)NEXT (5)0FFH
11、对压缩BCD进行编码,是！则加BEH,CCH.....
(1)AND AH，0FH (2)PUSH CX (3)SHR AL，CL
(4)AL，9 (5)BYTE PTR[DI]，0BEH (6)LOOP CLP1
12、自动抄表,Y=X*70 X<=5.....
(1)MOV AL，[SI] (2)A (3)MUL BL
(4)A (5)MUL BH (6)MUL DL
(7)INC SI (8)ADD SI，2
13、Y=X*70 X<=10...
(1)MOV AL，[SI] (2)A (3)SUB AL，10
(4)ADD AX，10*70 (5)MOV [DI]，AX (6)ADD DI，2
14、字符出现N次就用ESC,N,原字符三个字节来代替,压缩
(1)MOV AL，[DI] (2)REPNZ SCASB (3)INC DI
(4)L0 (5)ADD SI，3
15、对上题进行解压
(1)E (2)STOSB (3)CLD
(4)MOV CX，[SI] (5)MOV AL，[SI+1] (6)REP STOSB
(7)ADD SI，2
16、记录峰值
(1)XOR DX，AX (2)AND DH，80H (3)Z
(4)MOV AL，[SI-2] (5)MOV DX，AX
17、取出负数并计算绝对值之和
(1)CMP AL，0 (2)NEXT (3)NEG AL
(4)ADC DH，0 (5)REP STOSB
18、ASCII字符和汉字内码
(1)TEST (2)INC DI (3)REST11
(4)LASCⅡ (5)INC DL (6)[DI]
(7)DH
19、故障报警,找0,有0则统计个数
(1)MOV AL,[SI] (2)8 (3)SHL
(4)LP3 (5)LOOP (6)DH
(7)INC SI (8)DEC DL (9)LP1
20、窃水
(1)4 (2)INC DI (3)LP0
(4)0E1H (5)INC DI (6)JNZ
21、对非空格数据最高位清0
(1)AGN11 (2)ˊ#ˊ (3)INC DI
(4)JMP AGN1 (5)20H (6)[DI]
22、ASCII转成偶校验码,累加码
(1)PUSH (2)ROL (3)ADC
(4)BL, AL (5)POP (6)DX
(7)MOV [DI],AL
23、红外通讯数据,BCD码AACC,DDEE
(1)N (2)[SI] (3)JNZ NEXTD
(4)CMP AL,DH (5)ADD BX,DL (6)LOOP MCLP1
24、80个无符号字节,每8个求平均值
(1)DI,OFFSET RESULT (2)8 (3)AL
(4)LOOP MAGN2 (5)MOV CL,8 (6)DIV CL
(7)MOV [DI],AL (8)INC DI (9)JNZ
25、在第4和5之间插00H,8和9之间插55H....
(1)MOV SI,0 (2)MOV AH,SOURCE[SI] (3)INC SI
(4)AH (5)EXIT (6)POP SI
(7)CHAN
26、在第4和5之间插00FFH.....
(1)MOV DI,0 (2)MOV RESULT[DI],AX (3)INC SI
(4)INC DI (5)AX (6)DEC BX
(7)4 (8)INC DI
27、在0~9的二进制转成ASCII,在1,5...插"$"
(1)MOV SI,0 (2)4 (3)INC DI
(4)ADD AL,30H (5)INC SI (6)INSER1
28、ASCII转成BCD...奇数
(1)AL (2)AL (3)4
(4)CL (5)OR
29、ASCII转成个位二进制,最后存和
(1)0 (2)SUB (3)INC DI
(4)DAA (5)DEC CX (6)MOV [DI],DL
30、小写转成大写,并统计'z'的个数
(1)JB (2)NINC (3)20H
(4)JUMP (5)INC DI (6)MOV [DI],DL
31、16位二进制,对高位和低位进行逻辑与及或运算
(1)SOURCE[BX] (2)DL (3)OR
(4)AL (5)MOV [DI],AX (6)DEC CX
32、16进制数转成ASCCII,先高4位...
LEA SI,SOURCE
LEA DI,RESULT
MOV CX,N
LOOP2: MOV BL,2
MOV AL,[SI]
MOV AH,AL
PUSH CX
MOV CL,4
SHR AL,CL
POP CX
EXCH: CMP AL,9
JNA CHAR
ADD AL,07H
CHAR: ADD AL,30H
MOV [DI],AL
INC DI
DEC BL
JZ LOOP1
AND AH,OFH
MOV AL,AH
JMP EXCH
LOOP1: INC SI
LOOP LOOP2
33、在ASCII串的每个字符在最高位加上奇校验位
LEA SI,SOURCE
LEA DI,RESULT
LOOP2: MOV AL,[SI]
CMP AL,00H
JE EXIT
ADD AL,0
JNP LOOP1
OR AL,80H
LOOP1: MOV [DI],AL
INC DI
INC SI
JMP LOOP2
EXIT: MOV [DI],AL
34、 大写全变成小写
LEA SI,SOURCE
LEA DI,RESULT
LOOP1: MOV AL,[SI]
CMP AL,00H
JE EXIT
CMP AL,41H
JB KEEP
CMP AL,5AH
JNBE KEEP
ADD AL,20H
KEEP: MOV [DI],AL
INC DI
INC SI
JMP LOOP1
EXIT: MOV [DI],AL
35、 去掉为负的奇数
LEA SI,SOURCE
LEA DI,RESULT
MOV CX,20
LOOP1：MOV AL,[SI]
MOV AH,AL
SHR AH,1
JNC KEEP
CMP AL,0
JNL KEEP
JMP EXIT
KEEP： MOV [DI],AL
INC DI
EXIT： INC SI
LOOP LOOP1
36、串有连续的字符仅用一个字符代替
LEA SI,SOURCE
LEA DI,RESULT
LOOP1：MOV AL,[SI]
CMP AL,00H
JE EXIT
NEXT： INC SI
MOV AH,[SI]
CMP AL,AH
JE NEXT
MOV [DI],AL
INC DI
JMP LOOP1
EXIT: MOV [DI],AL
37、对每个数进行右移,直到最低位为1
(1)0 (2)TEST (3)NZ
(4)SHR (5)LOOP NEXT
38、统计每个数中二进制数中1的个数
(1)W (2)MOV BX,0 (3)NB
(4)LOOP1 (5)INC DI
39、BCD码转成ASCII,并在最高位加偶校验位
(1)AL,[SI] (2)SHR AL,CL (3)POP CX
(4)JP SERCH2 (5)ADD AH,30H (6)LOOP
40、无符号Ck=Ak除Bk
(1)MOV CX,N (2)DL,SOURCE[BX+N] (3)MOV AX
(4)DL (5)AX (6)INC BX
(7)JNZ
41、16个10位二进制，DB9~DB0 000000 转成DB7~DB0 000000 DB9 DB8
(1)BYTEPTR SOURCE[BX]+1(2)CL (3)CL
(4)AH (5)AL
42、无符号字节，排成升序
(1)INC DI (2)NEXT0 (3)N-1
(4)SB (5)NEXT3 (6)AL
(7)NEXT2 (8)BX (9)NEXT1
43、ASCII转成压缩BCD码
(1)B (2)0FH (3)B
(4)CX (5)4 (6)CX
(7)BL (8)B
44、BCD转成ASCII，高位BCD放高地址
(1)B (2)0FH (3)B
(4)BL (5)CX (6)4
(7)CX (8)B
45、无符号Ck=Ak+Bk
(1)OFFSET RESULT (2)0 (3)MOV CX,N
(4)ADD AL,SOURCE[BX] (5)ADC AH,0 (6)ADD DI,2
46、有符号Ck=Ak-Bk
(1)SUB AL,SOURCE[BX+N] (2)JNS (3)0FF H
(4)JUMP1 (5)JUMP 1 (6)CBW
47、无符号Ck=Ak*Bk
(1)MOV DI (2)MOV CX,N (3)MOV AL
(4)MUL SOURCE[BX] (5)DEC CX
48、摇号机，统计0~9出现的次数
(1)MOV AL,AH (2)AND AH,0F0H (3)SHR
(4)INC RESULT[BL] (5)INC RESULT[BL]
49、摇号机，两号码相加为2，3，4，5，6，7，8的次数
(1)BX (2)SHR (3)AH
(4)BL , AL (5)SUB (6)INC RESULT[BX]
50、有符号Ck=Ak+Bk
(1)SOURCE[BX+N] (2)ADD (3)0FFH
(4)JUMP (5)CBW
51、16个12位二进制DB11~DB0 0000转成DB7~DB0 0000 DB11~DB8
(1)4 (2)SOURCE[BX] (3)CL
(4)CL (5)CL (6)AH,AL
(7)AL (8)AH
52、10个无符号，近似法求近似平方根
(1)INC BX (2)JBE (3)INC BX
(4)SHR BX,1 (5)INC DI (6)INC SI
53、有符号8位二进制，排成正负相间，负数排第一个
(1)80H (2)AL, BL (3) BL
(4)DEC
54、对内存中7个ASCII字符组成的字符串进行如下操作，在源串前加#，后加*，再放原异或的结果....
(1)'# ' (2)00H (3)CHAR
(4)'* ' (5)0DH (6)0AH
(7)EXIT
55、无符号Ck=Ak-Bk
(1)MOV CX,N (2)SOURCE[BX+N] (3)JNC
(4)0FFH (5)[DI]
56、I*J矩阵转置,并计算每一行元素之和
(1)ADC CH,0 (2)CMP DX,I (3)ADD DI,2
(4)INC BX (5)LPJ
57、Y[n]=Y[n-1]+delta if X[n]>Y[n-1]+delta......
(1)[DI-1] (2)NA (3)MOV [DI],BX
(4)NB (5)MOV [DI],AL (6)MOV [DI],DX
58、说明已过峰值,记录当前值
(1)XOR BX,DX (2)AND BX,80H (3)Z
(4)STOSB (5)INC DI
59、ASCII,如果是0~9或A~F之间转成二进制
(1)MOV (2)MOV CX,N (3)'9'
(4)STRIP (5)'F' (6)INVALID
(7)NEXT
60、20个无符号数,求它们的和(字型)
(1)MOV AH,0 (2)ADD BX,AX (3)AL
(4)INC SI (5)INC DI (6)BX
61、有符号字节Ck=Ak*Bk,Ck按有符号字的型式
(1)OFFSET RESULT (2)MOV BX,N (3)SOURCE[BX+N]
(4)IMUL (5)DI,2 (6)DEC BX
62、DB11~DB0 0000 判别是否大于800H,若大于,存入01H,否则存00H,最后存放大于的个数
(1)OFFSET RESULT (2)8000 H (3)C_0
(4)CL
63、大写转小写统计A的个数
(1)JB (2)'Z' (3)NINC
(4)20H (5)INC DI (6)MOV [DI],DL
64、ASCII转成无符号二进制再统计大于等于5的个数
(1)00H (2)30H (3)JB
(4)DL (5)MOV [DI],DL
65、统计成绩，100~90...69~60以及低于60的人数,并计算30个学生的平均成绩
(1)CLD (2)MOV AH,0 (3)CMP AL,90
(4)BYTE PTR[DI+4] (5)JMP NEXT (6)BX
(7)N
66、删除10个无符号字节跌最大值和最小值,并计算算术平均值
(1)[SI] (2)[SI] (3)NEXT
(4)JL NEXT (5) N (6)INC AL
67、20个16位有符号,求出最小值和最大值
(1)MOV DX,[SI] (2)MOV CX,N-1 (3)CHKMIN
(4)JGE (5)MOV [DI],DX (6)MOV [DI],BX
68、大字转小写,其它转'SP'
(1)LEA DI,RESULT (2)[SI] (3)'Z'
(4)JA (5)20H (6)INC SI
(7)DI (8)LOOP
69、8位有符号,Ci=|Ai+Bi|
(1)N (2)SOURCE[BX+N] (3)SOURCE[BX]
(4)0FFH (5)JUMP (6)CBW
(7)JNS
70、取出N阶矩阵对角线上的元素,并计算累加值
(1)AL (2)MOV AH,0 (3)SOURCE
(4)ADC CH,0 (5)N+1
71、判断前9个字节是否为偶校验码,若是则转ASCII,否07H.再计算累加码并比较,相等存06H,否07H
(1)PUSH (2)JNE (3)BL ,0FH
(4)POP (5)CMP [SI],AL
72、无符号8位二进制转格雷码
(1)PUSH CX (2)ROL (3)ADC AH,0
(4)JNE (5)BH (6)POP CX
73、Yk=[(Y|n+3 - Y|n)/3]*(k-n) +Yn,k=n+1、n+2.n=0,3,6,9 非线性温度传感器分段线性插值法。
(1)MOV DL,3 (2)PUSH AX (3)BH
(4)AL (5)POP AX (6)2
74、N个有符号数找最大值，存入，其后为原N个数取反
(1)LEA (2)[BX] (3)CMP
(4)JG MAXD3 (5)MAXD2 (6)STOSB
75、无符号字节，Ck为Ak和Bk异或运算的结果
(1)CX,N (2)DI,OFFSET RESULT (3)SOURCE[BX+N]
(4)[DI],AL (5)INC BX
76、10个无符号字节，高4位和低4位转成ASCII，按照先低后高存
(1)0FH (2)CL (3)POP CX
(4)30H (5)ENDP
77、计算10*3矩阵每一行元素之和
(1)MOV AH,0 (2)SI (3)J
(4)AX (5)2
78、计算10*3矩阵每一列元素之和
(1)MOV AH,0 (2)J (3)2
(4)INC BX (5)J
79、在递增有序数组中插入一个正整数。如将02H插入到01H，03H，04H...中
(1)AL (2)DL (3)SI
(4)[BX+SI+1] (5)REP
80、四组带符号8位二进制,当每组中负多于正时,正变负,反之,负变正.
(1)4 (2)JG (3)NEXT
(4)JAE (5)0 (6)NOTNEG1
(7)JZ EXIT
81、小写转成大写
(1)UPPER2 (2)'Z' (3)A
(4)AL,0DFH (5)AL (6)SI
(7)DI (8) LOOP
82、有符号字节,Ck=Ak/Bk,结果低字节为商,高为余数
(1)MOV BX,0 (2)OFFSET RESULT (3)SOURCE[BX]
(4)CBW (5)IDIV (6)[DI]
83、16个10位无符号DB9~DB0 000000 判别是否<=200H,若小存01H,否存00H.最后存<=的个数
(1)0 (2)BYTE PTR SOURCE[BX+1](3)8000H
(4)DH (5)CL (6)INC DI
84、10个字节,统计每个数中位为1的个数存入,最后存入1位数的总数
(1)8 (2)ROL AL,1 (3)JUMP
(4)JNZ (5)DL (6)[DI],DH
85、将串中0DH,0AH换成0DH以00结尾
(1)CMP AL,00H (2)JE QUIT (3)E
(4)L0 (5)INC SI
86、20个无符号数组A，求新组B。B(I)=A(I),I=1,20。 B(I)=(A(I-1)+2*A(I)+A(I+1)/4),I=2~19.
(1)MOV AL,[SI+N-1] (2)MOV [DI+N-1],AL (3)N-2
(4)[SI] (5)[SI-1] (6)[SI+1]
(7)SHL
87、有符号字节数据除以5，并按四舍五入的原则将商存入
(1)AND AH,80H (2)NEG AH (3)NEXT
(4)AH,AH (5)ADD AL,1
88、对10个无符号数进行升序排序，剔除头尾，计算其余的算术平均值，4舍5入存在最后
(1)N (2)DEC BX (3)CMP BX,0
(4)N-2 (5)MOV DL,N-2 (6)ADD AL,1
89、分别统计内存中字符串SEGMENT、EQU等个数，以字节形式存入
(1)STR0,N1,RESULT[0] (2)STR1,N1,RESULT[1] (3)STR2,N1,RESULT[2]
(4)STR3,N1,RESULT[3] (5)STR4,N1,RESULT[4] (6)STR5,N1,RESULT[5]
(7)STR6,N1,RESULT[6] (8)STR7,N1,RESULT[7] (9)STR8,N1,RESULT[8]
(10)STR9,N1,RESULT[9]
90、无符号字节序列，求最大值最小值。先存入原数，再存最大值、最小值
(1)DI (2)1 (3)ADD DI,1
(4)JNA (5)BL (6)BH
(7)MOV [DI+1],BL
91、对10个字节进行加密，高位A>=低位B,则B=A-B;A
(1)DEC DX (2)JAE G1 (3)AL
(4)SHL (5)OR
92、6组有符号16位二进制,当每组中负多于正,则负变正.反之,则正变负.
(1)MOV CX,6 (2)ADD SI,2 (3)JMP
(4)ADD SI,2 (5)NEG AX (6)ADD DI,2
(7)ADD SI,2 (8) ADD DI,2 (9) JMP REPT1
93、20个有符号字节序列,求最大值和最最小值,先存原数,最后存最大值和最小值
(1)DI (2)1 (3)ADD DI,1
(4)JNG (5)BL (6)MOV [DI],BH
(7)INC DI (8) BL
94、对信号进行低通滤波Yi=(15*Yi-1/16)+(Xi/16),Y0=0
(1)BX (2)ADD (3)SUB
(4)MOV BX,AX (5)INC DI (6)INC SI
95、 20个有符号,>=+64用'>'表示,0
LEA SI,SOURCE
LEA DI,RESULT
MOV CX,N
NEXT: MOV AL,[SI]
CMP AL,64
JGE LP1
CMP AL,0
JG LP2
JE LP3
CMP AL,-64
JG LP4
MOV AL,'
JMP SAV
LP1: MOV AL
JMP SAV
LP2: MOV AL,'>'
JMP SAV
LP3: MOV AL,'0'
JMP SAV
LP4: MOV AL,'-'
SAV: MOV[DI],AL
INC SI
INC DI
LOOP NEXT
96、在有序递增数组中删掉一个指字的数,数组最后元素填0
(1)REPNZ (2)DI (3)MOVSB
(4)00H (5)MOV CX,N
97、Yn=Xn+5 Xn5;
(1)MOV CX,N (2)L (3)A
(4)INC SI (5)INC DI (6)LOOP NEXT
98、加密10个字节,高位与前一个字节低位交换,低位与后一字节的高位交换
(1)JNZ LW (2)PUSH (3)POP
(4)RESULT[DI] (5)SOURCE[SI]
99、大写转小写,其余不变
(1)LOWER2 (2)'Z' (3)A
(4)OR AL,20H (5)AL (6)INC SI
(7)DI (8) LOOP
100、20个8位有符号数(补码)Yn=-100 Xn100
(1)MOV CX,N (2)L (3)JNG STORE
(4)INC SI (5)INC DI (6)LOOP NEXT
另一份答案
1、40个字节，有符号，数组，分成正、负两数组，并求个数
(1)MOV (2)80H (3)JMP MAIN (4)LOOP (5)[SI] (6)MAIN4 (7)INC BX
2、10个无符号8位格雷码，转成二进制
(1)PUSH CX (2)RCL (3)BH (4)JNE SET_ONE (5)BH (6)AND BH，01H (7)POP CX
3、16位无符号数，排成升序
(1)2 (2)ADD DI，2 (3)NEXT0 (4)BX (5)SW (6)AX (7)NEXT (8)DEC BX (9)JNZ
4、(x1+x2+x3+x4+x5)/5代替原数 (1)5 (2)CX (3)4 (4)MOV DX，0 (5)INC DI (6)INC SI
5、21个8位二有符号数，相邻之间差值不超过-8至7。进行压缩
(1)AL，[SI-2] (2)XOR BX，0FFH (3)Z (4)SHL (5)AND AL，0FH (6)DEC DX
6、将0~9的ASC码转成二进制，并将SP转成$
(1)MOV SI，0 (2)MOV CX，N (3)MOV AL，SOURCE[SI] (4)10H (5)INC DI (6)INC SI (7)CHAN
7、对#和*之间的7个ASC码进行异或操作......
(1)JNZ (2)'*' (3)SEARCH1 (4)JNZ (5)13 (6)DEC BX
8、10个16位二进制,统计每个数中0的个数
(1)16 (2)SHL AX，1 (3)JB (4)COUNT (5)BX，2 (6)[DI]，DH
9、L做逻辑尺 (1)LEA DI，RESULT (2)1 (3)TEST (4)JP (5)SHL DX，1
10、求10个有符号字节的绝对值之和(字型),并到最大的数和地址
(1)NEG AL (2)ADC [DI+1] (3)ADC [DI+1] (4)NEXT (5)0FFH
11、对压缩BCD进行编码,是则加BEH,CCH.....
(1)AND AH，0FH (2)PUSH CX (3)SHR AL，CL (4)AL，9 (5)BYTE PTR[DI]，0BEH (6)LOOP CLP1
12、自动抄表,Y=X*70 X<=5.....
(1)MOV AL，[SI] (2)A (3)MUL BL (4)A (5)MUL BH (6)MUL DL (7)INC SI (8)ADD SI，2
13、Y=X*70 X<=10...
(1)MOV AL，[SI] (2)A (3)SUB AL，10 (4)ADD AX，10*70 (5)MOV [DI]，AX (6)ADD DI，2
14、字符出现N次就用ESC,N,原字符三个字节来代替,压缩
(1)MOV AL，[DI] (2)REPNZ SCASB (3)INC DI (4)L0 (5)ADD SI，3
15、对上题进行解压
(1)E (2)STOSB (3)CLD (4)MOV CX，[SI] (5)MOV AL，[SI+1] (6)REP STOSB (7)ADD SI，2
16、记录峰值 (1)XOR DX，AX (2)AND DH，80H (3)Z (4)MOV AL，[SI-2] (5)MOV DX，AX
17、取出负数并计算绝对值之和
(1)CMP AL，0 (2)NEXT (3)NEG AL (4)ADC DH，0 (5)REP STOSB
18、ASCII字符和汉字内码 (1)TEST (2)INC DI (3)REST11 (4)LASCⅡ (5)INC DL (6)[DI] (7)DH
19、故障报警,找0,有0则统计个数
(1)MOV AL,[SI] (2)8 (3)SHL (4)LP3 (5)LOOP (6)DH (7)INC SI (8)DEC DL (9)LP1
20、窃水 (1)4 (2)INC DI (3)LP0 (4)0E1H (5)INC DI (6)JNZ
21、对非空格数据最高位清0 (1)AGN11 (2)ˊ#ˊ (3)INC DI (4)JMP AGN1 (5)20H (6)[DI]
22、ASCII转成偶校验码,累加码
(1)PUSH (2)ROL (3)ADC (4)BL, AL (5)POP (6)DX (7)MOV [DI],AL
23、红外通讯数据,BCD码AACC,DDEE
(1)N (2)[SI] (3)JNZ NEXTD (4)CMP AL,DH (5)ADD BX,DL (6)LOOP MCLP1
24、80个无符号字节,每8个求平均值
(1)DI,OFFSET RESULT (2)8 (3)AL (4)LOOP MAGN2 (5)MOV CL,8 (6)DIV CL (7)MOV [DI],AL (8)INC DI (9)JNZ
25、在第4和5之间插00H,8和9之间插55H....
(1)MOV SI,0 (2)MOV AH,SOURCE[SI] (3)INC SI (4)AH (5)EXIT (6)POP SI (7)CHAN
26、在第4和5之间插00FFH.....
(1)MOV DI,0 (2)MOV RESULT[DI],AX (3)INC SI (4)INC DI (5)AX (6)DEC BX (7)4 (8)INC DI
27、在0~9的二进制转成ASCII,在1,5...插"$"
(1)MOV SI,0 (2)4 (3)INC DI (4)ADD AL,30H (5)INC SI (6)INSER1
28、ASCII转成BCD...奇数 (1)AL (2)AL (3)4 (4)CL (5)OR
29、ASCII转成个位二进制,最后存和
(1)0 (2)SUB (3)INC DI (4)DAA (5)DEC CX (6)MOV [DI],DL
30、小写转成大写,并统计'z'的个数
(1)JB (2)NINC (3)20H (4)JUMP (5)INC DI (6)MOV [DI],DL
31、16位二进制,对高位和低位进行逻辑与及或运算
(1)SOURCE[BX] (2)DL (3)OR (4)AL (5)MOV [DI],AX (6)DEC CX
37、对每个数进行右移,直到最低位为1 (1)0 (2)TEST (3)NZ (4)SHR (5)LOOP NEXT
38、统计每个数中二进制数中1的个数 (1)W (2)MOV BX,0 (3)NB (4)LOOP1 (5)INC DI
39、BCD码转成ASCII,并在最高位加偶校验位
(1)AL,[SI] (2)SHR AL,CL (3)POP CX (4)JP SERCH2 (5)ADD AH,30H (6)LOOP
40、无符号Ck=Ak除Bk
(1)MOV CX,N (2)DL,SOURCE[BX+N] (3)MOV AX (4)DL (5)AX (6)INC BX (7)JNZ
41、16个10位二进制，DB9~DB0 000000 转成DB7~DB0 000000 DB9 DB8
(1)BYTEPTR SOURCE[BX]+1(2)CL (3)CL (4)AH (5)AL
42、无符号字节，排成升序
(1)INC DI (2)NEXT0 (3)N-1 (4)SB (5)NEXT3 (6)AL (7)NEXT2 (8)BX (9)NEXT1
43、ASCII转成压缩BCD码 (1)B (2)0FH (3)B (4)CX (5)4 (6)CX (7)BL (8)B
44、BCD转成ASCII，高位BCD放高地址 (1)B (2)0FH (3)B (4)BL (5)CX (6)4 (7)CX (8)B
45、无符号Ck=Ak+Bk
(1)OFFSET RESULT (2)0 (3)MOV CX,N (4)ADD AL,SOURCE[BX] (5)ADC AH,0 (6)ADD DI,2
46、有符号Ck=Ak-Bk
(1)SUB AL,SOURCE[BX+N] (2)JNS (3)0FFH (4)JUMP1 (5)JUMP 1 (6)CBW
47、无符号Ck=Ak*Bk (1)MOV DI (2)MOV CX,N (3)MOV AL (4)MUL SOURCE[BX] (5)DEC CX
48、摇号机，统计0~9出现的次数
(1)MOV AL,AH (2)AND AH,0F0H (3)SHR (4)INC RESULT[BL] (5)INC RESULT[BL]
49、摇号机，两号码相加为2，3，4，5，6，7，8的次数
(1)BX (2)SHR (3)AH (4)BL , AL (5)SUB (6)INC RESULT[BX]
50、有符号Ck=Ak+Bk (1)SOURCE[BX+N] (2)ADD (3)0FFH (4)JUMP (5)CBW
51、16个12位二进制DB11~DB0 0000转成DB7~DB0 0000 DB11~DB8
(1)4 (2)WORD PTR SOURCE[BX] (3)CL (4)CL (5)CL (6)AH,AL (7)AL (8)AH
52、10个无符号，近似法求近似平方根
(1)INC BX (2)JBE (3)INC BX (4)SHR BX,1 (5)INC DI (6)INC SI
53、有符号8位二进制，排成正负相间，负数排第一个 (1)80H (2)AL, BL (3) BL (4)DEC
54、对内存中7个ASCII字符组成的字符串进行如下操作，在源串前加#，后加*，再放原异或的结果....
(1)'# ' (2)00H (3)CHAR (4)'* ' (5)0DH (6)0AH (7)EXIT
55、无符号Ck=Ak-Bk (1)MOV CX,N (2)SOURCE[BX+N] (3)JNC (4)0FFH (5)[DI]
56、I*J矩阵转置,并计算每一行元素之和
(1)ADC CH,0 (2)CMP DX,I (3)ADD DI,2 (4)INC BX (5)LPJ
57、Y[n]=Y[n-1]+delta if X[n]>Y[n-1]+delta......
(1)[DI-1] (2)NA (3)MOV [DI],BX (4)NB (5)MOV [DI],AL (6)MOV [DI],DX
58、说明已过峰值,记录当前值 (1)XOR BX,DX (2)AND BX,80H (3)Z (4)STOSB (5)INC DI
59、ASCII,如果是0~9或A~F之间转成二进制
(1)MOV (2)MOV CX,N (3)'9' (4)STRIP (5)'F' (6)INVALID (7)NEXT
60、20个无符号数,求它们的和(字型)
(1)MOV AH,0 (2)ADD BX,AX (3)AL (4)INC SI (5)INC DI (6)BX
61、有符号字节Ck=Ak*Bk,Ck按有符号字的型式
(1)OFFSET RESULT (2)MOV BX,N (3)SOURCE[BX+N] (4)IMUL (5)DI,2 (6)DEC BX
62、DB11~DB0 0000 判别是否大于800H,若大于,存入01H,否则存00H,最后存放大于的个数
(1)OFFSET RESULT (2)8000 H (3)C_0 (4)CL
63、大写转小写统计A的个数 (1)JB (2)'Z' (3)NINC (4)20H (5)INC DI (6)MOV [DI],DL
64、ASCII转成无符号二进制再统计大于等于5的个数
(1)00H (2)30H (3)JB (4)DL (5)MOV [DI],DL
65、统计成绩，100~90...69~60以及低于60的人数,并计算30个学生的平均成绩
(1)CLD (2)MOV AH,0 (3)CMP AL,90 (4)BYTE PTR[DI+4] (5)JMP NEXT (6)BX (7)N
66、删除10个无符号字节跌最大值和最小值,并计算算术平均值
(1)[SI] (2)[SI] (3)NEXT (4)JL NEXT (5) N (6)INC AL
67、20个16位有符号,求出最小值和最大值
(1)MOV DX,[SI] (2)MOV CX,N-1 (3)CHKMIN (4)JGE (5)MOV [DI],DX (6)MOV [DI],BX
68、大字转小写,其它转'SP'
(1)LEA DI,RESULT (2)[SI] (3)'Z' (4)JA (5)20H (6)INC SI (7)DI (8)LOOP
69、8位有符号,Ci=|Ai+Bi|
(1)N (2)SOURCE[BX+N] (3)SOURCE[BX] (4)0FFH (5)JUMP (6)CBW (7)JNS
70、取出N阶矩阵对角线上的元素,并计算累加值
(1)AL (2)MOV AH,0 (3)SOURCE (4)ADC CH,0 (5)N+1
71、判断前9个字节是否为偶校验码,若是则转ASCII,否07H.再计算累加码并比较,相等存06H,否07H
(1)PUSH (2)JNE (3)BL ,0FH (4)POP (5)CMP [SI],AL
72、无符号8位二进制转格雷码
(1)PUSH CX (2)ROL (3)ADC AH,0 (4)JNE (5)BH (6)POP CX
73、Yk=[(Y|n+3 - Y|n)/3]*(k-n) +Yn,k=n+1、n+2.n=0,3,6,9 非线性温度传感器分段线性插值法。
(1)MOV DL,3 (2)PUSH AX (3)BH (4)AL (5)POP AX (6)2
74、N个有符号数找最大值，存入，其后为原N个数取反
(1)LEA (2)[BX] (3)CMP (4)JG MAXD3 (5)MAXD2 (6)STOSB
75、无符号字节，Ck为Ak和Bk异或运算的结果
(1)CX,N (2)DI,OFFSET RESULT (3)SOURCE[BX+N] (4)[DI],AL (5)INC BX
76、10个无符号字节，高4位和低4位转成ASCII，按照先低后高存
(1)0FH (2)CL (3)POP CX (4)30H (5)ENDP
77、计算10*3矩阵每一行元素之和 (1)MOV AH,0 (2)SI (3)J (4)AX (5)2
78、计算10*3矩阵每一列元素之和 (1)MOV AH,0 (2)J (3)2 (4)INC BX (5)J
79、在递增有序数组中插入一个正整数。如将02H插入到01H，03H，04H...中
(1)AL (2)DL (3)SI (4)[BX+SI+1] (5)REP
80、四组带符号8位二进制,当每组中负多于正时,正变负,反之,负变正.
(1)4 (2)JG (3)NEXT (4)JAE (5)0 (6)NOTNEG1 (7)JZ EXIT
81、小写转成大写 (1)UPPER2 (2)'Z' (3)A (4)AL,0DFH (5)AL (6)SI (7)DI (8) LOOP
82、有符号字节,Ck=Ak/Bk,结果低字节为商,高为余数
(1)MOV BX,0 (2)OFFSET RESULT (3)SOURCE[BX] (4)CBW (5)IDIV (6)[DI]
83、16个10位无符号DB9~DB0 000000 判别是否<=200H,若小存01H,否存00H.最后存<=的个数
(1)0 (2)BYTE PTR SOURCE[BX+1] (3)8000H (4)DH (5)CL (6)INC DI
84、10个字节,统计每个数中位为1的个数存入,最后存入1位数的总数
(1)8 (2)ROL AL,1 (3)JUMP (4)JNZ (5)DL (6)[DI],DH
85、将串中0DH,0AH换成0DH以00结尾 (1)CMP AL,00H (2)JE QUIT (3)E (4)L0 (5)INC SI
86、20个无符号数组A，求新组B。B(I)=A(I),I=1,20。 B(I)=(A(I-1)+2*A(I)+A(I+1)/4),I=2~19.
(1)MOV AL,[SI+N-1] (2)MOV [DI+N-1],AL (3)N-2 (4)[SI] (5)[SI-1] (6)[SI+1] (7)SHL
87、有符号字节数据除以5，并按四舍五入的原则将商存入
(1)AND AH,80H (2)NEG AH (3)NEXT (4)AH,AH (5)ADD AL,1
88、对10个无符号数进行升序排序，剔除头尾，计算其余的算术平均值，4舍5入存在最后
(1)N (2)DEC BX (3)CMP BX,0 (4)N-2 (5)MOV DL,N-2 (6)ADD AL,1
89、分别统计内存中字符串SEGMENT、EQU等个数，以字节形式存入
(1)STR0,N1,RESULT[0] (2)STR1,N1,RESULT[1] (3)STR2,N1,RESULT[2] (4)STR3,N1,RESULT[3] (5)STR4,N1,RESULT[4] (6)STR5,N1,RESULT[5] (7)STR6,N1,RESULT[6] (8)STR7,N1,RESULT[7] (9)STR8,N1,RESULT[8] (10)STR9,N1,RESULT[9]
90、无符号字节序列，求最大值最小值。先存入原数，再存最大值、最小值
(1)DI (2)1 (3)ADD DI,1 (4)JNA (5)BL (6)BH (7)MOV [DI+1],BL
91、对10个字节进行加密，高位A>=低位B,则B=A-B;A
(1)DEC DX (2)JAE G1 (3)AL (4)SHL (5)OR
92、6组有符号16位二进制,当每组中负多于正,则负变正.反之,则正变负.
(1)MOV CX,6 (2)ADD SI,2 (3)JMP (4)ADD SI,2 (5)NEG AX (6)ADD DI,2 (7)ADD SI,2 (8) ADD DI,2 (9) JMP REPT1
93、20个有符号字节序列,求最大值和最最小值,先存原数,最后存最大值和最小值
(1)DI (2)1 (3)ADD DI,1 (4)JNG (5)BL (6)MOV [DI],BH (7)INC DI (8) BL
94、对信号进行低通滤波Yi=(15*Yi-1/16)+(Xi/16),Y0=0
(1)BX (2)ADD (3)SUB (4)MOV BX,AX (5)INC DI (6)INC SI
96、在有序递增数组中删掉一个指字的数,数组最后元素填0
(1)REPNZ (2)DI (3)MOVSB (4)00H (5)MOV CX,N
97、Yn=Xn+5 Xn5;
(1)MOV CX,N (2)L (3)A (4)INC SI (5)INC DI (6)LOOP NEXT
98、加密10个字节,高位与前一个字节低位交换,低位与后一字节的高位交换
(1)JNZ LW (2)PUSH (3)POP (4)RESULT[DI] (5)SOURCE[SI]
99、大写转小写,其余不变
(1)LOWER2 (2)'Z' (3)A (4)OR AL,20H (5)AL (6)INC SI (7)DI (8) LOOP
100、20个8位有符号数(补码)Yn=-100 Xn100
(1)MOV CX,N (2)L (3)JNG STORE (4)INC SI (5)INC DI (6)LOOP NEXT
PC技术2003年100道上机题答案(南开大学出版社)
注：所有内容均来自南开大学的光盘。
可直接打印 访问以上地址也一样。
1.(1)MOV
(2)00H
(3)JMP MAIN3
(4)LOOP
(5)[SI]
(6)MAIN4
(7)INC BX
2.(1)PUSH CX
(2)RCL
(3)BH
(4)JNE SET ONE
(5)BH
(6)AND BH,01H
(7)POP CX
3.(1)2
(2)ADD DI,2
(3)NEXT0
(4)BX
(5)SW
(6)AX
(7)NEXT
(8)DEC BX
(9)JNZ
4.(1)5
(2)CX
(3)4
(4)MOV DX,0
(5)INC DI
(6)INC SI
5.(1)AL,[SI-2]
(2)XOR BX,0FFH
(3)Z
(4)SHL
(5)AND AL,0FH
(6)DEC DX
6.(1)MOV SI,0
(2)MOV CX,N
(3)MOV AL,SOURCE[SI]
(4)10H
(5)INC DI
(6)INC SI
(7)CHAN
7.(1)JNZ
(2)'*'
(3)SEARCH1
(4)JNZ
(5)13
(6)DEC BX
8.(1)16
(2)SHL AX,1
(3)JB
(4)COUNT
(5)BX,2
(6)[DI],DH
9.(1)LEA DI,RESULT
(2)1
(3)TEST
(4)JP
(5)SHL DX,1
10.(1)NEG AL
(2)ADC [DI+1]
(3)ADC [DI+1]
(4)NEXT
(5)0FFH
11.(1)AND AH,0FH
(2)PUSH CX
(3)SHR AL,CL
(4)AL,9
(5)BYTE PTR[DI],0BEH
(6)LOOP CLP1
12.(1)MOV AL,[SI]
(2)A
(3)MUL BL
(4)A
(5)MUL BH
(6)MUL DL
(7)INC SI
(8)ADD SI,2
13.(1)MOV AL,[SI]
(2)A
(3)SUB AL,10
(4)ADD AX,10*70
(5)MOV [DI],AX
(6)ADD DI,2
14.(1)MOV AL,[DI]
(2)REPNZ SCASB
(3)INC DI
(4)L0
(5)ADD SI,3
15.(1)E
(2)STOSB
(3)CLD
(4)MOV CX,[SI]
(5)MOV AL,[SI+1]
(6)REP STOSB
(7) ADD SI ,2
16.(1) XOR DX ,AX
(2)AND DH ,80H
(3) Z
(4)MOV AL,[SI-2]
(5)MOV DX,AX
17.(1)CMP AL,0
(2)NEXT
(3)NEG AL
(4)ADC DH,0
(5)REP STOSB
18.(1) TEST
(2)INC DI
(3) REST11
(4) LASCⅡ
(5)INC DL
(6) [DI]
(7) DH
19.(1) MOV AL, [SI]
(2)8
(3) SHL
(4) LP3
(5)LOOP
(6) DH
(7) INC SI
(8)DEC DL
(9) LP1
20.(1) 4
(2)INC DI
(3) LP0
(4) 0E1H
(5)INC DI
(6) JNZ
21.(1)AGN11
(2)ˊ#ˊ
(3)INC DI
(4)JMP AGN1
(5)20H
(6)[DI]
22.(1)PUSH
(2)ROL
(3)ADC
(4)BL, AL
(5)POP
(6)DX
(7)MOV [DI],AL
23.(1)N
(2)[SI]
(3)JNZ NEXTD
(4)CMP AL,DH
(5)ADD BX,DL
(6)LOOP MCLP1
24.(1)DI,OFFSET RESULT
(2)8
(3)AL
(4)LOOP MAGN2
(5)MOV CL,8
(6)DIV CL
(7)MOV [DI],AL
(8)INC DI
(9)JNZ
25.(1)MOV SI,0
(2)MOV AH,SOURCE[SI]
(3)INC SI
(4)AH
(5)EXIT
(6)POP SI
(7)CHAN
26.(1)MOV DI,0
(2)MOV RESULT[DI],AX
(3)INC SI
(4)INC DI
(5)AX
(6)DEC BX
(7)4
(8)INC DI
27.(1)MOV SI,0
(2)4
(3)INC DI
(4)ADD AL,30H
(5)INC SI
(6)INSER1
28.(1)AL
(2)AL
(3)4
(4)CL
(5)OR
29.(1)0
(2)SUB
(3)INC DI
(4)DAA
(5)DEC CX
(6)MOV [DI],DL
30.(1)JB
(2)NINC
(3)20H
(4)JUMP
(5)INC DI
(6)MOV [DI],DL
31.(1)SOURCE[BX]
(2)DL
(3)OR
(4)AL
(5)MOV [DI],AX
(6)DEC CX
32. LEA SI,SOURCE
LEA DI,RESULT
MOV CX,N
LOOP2: MOV BL,2
MOV AL,[SI]
MOV AH,AL
PUSH CX
MOV CL,4
SHR AL,CL
POP CX
EXCH: CMP AL,9
JNA CHAR
ADD AL,07H
CHAR: ADD AL,3 0H
MOV [DI],AL
INC DI
DEC BL
JZ LOOP1
AND AH,OFH
MOV AL,AH
JMP EXCH
LOOP1: INC SI
LOOP LOOP2
33. LEA SI,SOURCE
LEA DI,RESULT
LOOP2: MOV AL,[SI]
CMP AL,00H
JE EXIT
ADD AL,0
JNP LOOP1
OR AL,80H
LOOP1: MOV [DI],AL
INC DI
INC SI
JMP LOOP2
EXIT: MOV [DI],AL
34. LEA SI,SOURCE
LEA DI,RESULT
LOOP1: MOV AL,[SI]
CMP AL,00H
JE EXIT
CMP AL,41H
JB KEEP
CMP AL,5AH
JNBE KEEP
ADD AL,20H
KEEP: MOV [DI],AL
INC DI
INC SI
JMP LOOP1
EXIT: MOV [DI],AL
35. LEA SI,SOURCE
LEA DI,RESULT
MOV CX,2 0
LOOP 1：MOV AL,[SI]
MOV AH,AL
SHR AH, 1
JNC KEEP
CMP AL, 0
JNL KEEP
JMP EXIT
KEEP ： MOV [DI],AL
INC DI
EXIT ： INC SI
LOOP LOOP 1
36. LEA SI,SOURCE
LEA DI,RESULT
LOOP1：MOV AL,[SI]
CMP AL,00H
JE EXIT
NEXT： INC SI
MOV AH,[SI]
CMP AL,AH
JE NEXT
MOV [DI],AL
INC DI
JMP LOOP1
EXIT: MOV [DI],AL
37.(1)0
(2)TEST
(3)NZ
(4)SHR
(5)LOOP NEXT
38.(1)W
(2)MOV BX,0
(3)NB
(4)LOOP1
(5)INC DI
39.(1)AL,[SI]
(2)SHR AL,CL
(3)POP CX
(4)JP SERCH2
(5)ADD AH,30H
(6)LOOP
40.(1)MOV CX,N
(2)DL,SOURCE[BX+N]
(3)MOV AX
(4)DL
(5)AX
(6)INC BX
(7)JNZ
41.(1)BYTEPTR SOURCE[BX]+1
(2)CL
(3)CL
(4)AH
(5)AL
42.(1)INC DI
(2)NEXT0
(3)N-1
(4)SB
(5)NEXT3
(6)AL
(7)NEXT2
(8)BX
(9)NEXT1
43.(1)B
(2)0FH
(3)B
(4)CX
(5)4
(6)CX
(7)BL
(8)B
44.(1)B
(2)0FH
(3)B
(4)BL
(5)CX
(6)4
(7)CX
(8)B
45.(1)OFFSET RESULT
(2)0
(3)MOV CX,N
(4)ADD AL,SOURCE[BX]
(5)ADC AH,0
(6)ADD DI,2
46.(1)SUB AL,SOURCE[BX+N]
(2)JNS
(3)0FF H
(4)JUMP1
(5)JUMP 1
(6)CBW
47.(1)MOV DI
(2)MOV CX,N
(3)MOV AL
(4)MUL SOURCE[BX]
(5)DEC CX
48.(1)MOV AL,AH
(2)AND AH,0F0H
(3)SHR
(4)INC RESULT[BL]
(5)INC RESULT[BL]
49.(1)BX
(2)SHR
(3)AH
(4)BL , AL
(5)SUB
(6)INC RESULT[BX]
50.(1)SOURCE[BX+N]
(2)ADD
(3)0FFH
(4)JUMP
(5)CBW
51.(1)4
(2)SOURCE[BX]
(3)CL
(4)CL
(5)CL
(6)AH,AL
(7)AL
(8)AH
52.(1)INC BX
(2)JBE
(3)INC BX
(4)SHR BX,1
(5)INC DI
(6)INC SI
53.(1)80H
(2)AL, BL
(3) BL
(4)DEC
54.(1)'# '
(2)00H
(3)CHAR
(4)'* '
(5)0DH
(6)0AH
(7)EXIT
55.(1)MOV CX,N
(2)SOURCE[BX+N]
(3)JNC
(4)0FFH
(5)[DI]
56.(1)ADC CH,0
(2)CMP DX,I
(3)ADD DI,2
(4)INC BX
(5)LPJ
57.(1)[DI-1]
(2)NA
(3)MOV [DI],BX
(4)NB
(5)MOV [DI],AL
(6)MOV [DI],DX
58.(1)XOR BX,DX
(2)AND BX,80H
(3)Z
(4)STOSB
(5)INC DI
59.(1)MOV
(2)MOV CX,N
(3)'9'
(4)STRIP
(5)'F'
(6)INVALID
(7)NEXT
60.(1)MOV AH,0
(2)ADD BX,AX
(3)AL
(4)INC SI
(5)INC DI
(6)BX
61.(1)OFFSET RESULT
(2)MOV BX,N
(3)SOURCE[BX+N]
(4)IMUL
(5)DI,2
(6)DEC BX
62.(1)OFFSET RESULT
(2)8000 H
(3)C_0
(4)CL
63.(1)JB
(2)'Z'
(3)NINC
(4)20H
(5)INC DI
(6)MOV [DI],DL
64.(1)00H
(2)30H
(3)JB
(4)DL
(5)MOV [DI],DL
65.(1)CLD
(2)MOV AH,0
(3)CMP AL,90
(4)BYTE PTR[DI+4]
(5)JMP NEXT
(6)BX
(7)N
66.(1)[SI]
(2)[SI]
(3)NEXT
(4)JL NEXT
(5) N
(6)INC AL
67.(1)MOV DX,[SI]
(2)MOV CX,N-1
(3)CHKMIN
(4)JGE
(5)MOV [DI],DX
(6)MOV [DI],BX
68.(1)LEA DI,RESULT
(2)[SI]
(3)'Z'
(4)JA
(5)20H
(6)INC SI
(7)DI
(8)LOOP
69.(1) N
(2) SOURCE [BX+ N]
(3) SOURCE [BX]
(4)0FFH
(5)JUMP
(6)CBW
(7)JNS
70.(1)AL
(2)MOV AH,0
(3)SOURCE
(4)ADC CH,0
(5)N+1
71.(1)PUSH
(2)JNE
(3)BL ,0FH
(4)POP
(5)CMP [SI],AL
72.(1)PUSH CX
(2)ROL
(3)ADC AH,0
(4)JNE
(5)BH
(6)POP CX
73.(1)MOV DL,3
(2)PUSH AX
(3)BH
(4)AL
(5)POP AX
(6)2
74.(1)LEA
(2)[BX]
(3)CMP
(4)JG MAXD3
(5)MAXD2
(6)STOSB
75.(1)CX,N
(2)DI,OFFSET RESULT
(3)SOURCE[BX+N]
(4)[DI],AL
(5)INC BX
76.(1)0FH
(2)CL
(3)POP CX
(4)30H
(5)ENDP
77.(1)MOV AH,0
(2)SI
(3)J
(4)AX
(5)2
78.(1)MOV AH,0
(2)J
(3)2
(4)INC BX
(5)J
79.(1)AL
(2)DL
(3)SI
(4)[BX+SI+1]
(5)REP
80.(1)4
(2)JG
(3)NEXT
(4)JAE
(5)0
(6)NOTNEG1
(7)JZ EXIT
81.(1)UPPER2
(2)'Z'
(3)A
(4)AL,0DFH
(5)AL
(6)SI
(7)DI
(8) LOOP
82.(1)MOV BX,0
(2)OFFSET RESULT
(3)SOURCE[BX]
(4)CBW
(5)IDIV
(6)[DI]
83.(1)0
(2)BYTE PTR SOURCE[BX+1]
(3)8000H
(4)DH
(5)CL
(6)INC DI
84.(1)8
(2)ROL AL,1
(3)JUMP
(4)JNZ
(5)DL
(6)[DI],DH
85.(1)CMP AL,00H
(2)JE QUIT
(3)E
(4)L0
(5)INC SI
86.(1)MOV AL,[SI+N-1]
(2)MOV [DI+N-1],AL
(3)N-2
(4)[SI]
(5)[SI-1]
(6)[SI+1]
(7)SHL
87.(1)AND AH,80H
(2)NEG AH
(3)NEXT
(4)AH,AH
(5)ADD AL,1
88.(1)N
(2)DEC BX
(3)CMP BX,0
(4)N-2
(5)MOV DL,N-2
(6)ADD AL,1
89.(1)STR0,N1,RESULT[0]
(2)STR1,N1,RESULT[1]
(3)STR2,N1,RESULT[2]
(4)STR3,N1,RESULT[3]
(5)STR4,N1,RESULT[4]
(6)STR5,N1,RESULT[5]
(7)STR6,N1,RESULT[6]
(8)STR7,N1,RESULT[7]
(9)STR8,N1,RESULT[8]
(10)STR9,N1,RESULT[9]
90.(1)DI
(2)1
(3)ADD DI,1
(4)JNA
(5)BL
(6)BH
(7)MOV [DI+1],BL
91.(1)DEC DX
(2)JAE G1
(3)AL
(4)SHL
(5)OR
92.(1)MOV CX,6
(2)ADD SI,2
(3)JMP
(4)ADD SI,2
(5)NEG AX
(6)ADD DI,2
(7)ADD SI,2
(8) ADD DI,2
(9) JMP REPT1
93.(1)DI
(2)1
(3)ADD DI,1
(4)JNG
(5)BL
(6)MOV [DI],BH
(7)INC DI
(8) BL
94.(1)BX
(2)ADD
(3)SUB
(4)MOV BX,AX
(5)INC DI
(6)INC SI
95. LEA SI,SOURCE
LEA DI,RESULT
MOV CX,N
NEXT: MOV AL,[SI]
CMP AL,64
JGE LP1
CMP AL,0
JG LP2
JE LP3
CMP AL,-64
JG LP4
MOV AL,'
JMP SAV
LP1: MOV AL
JMP SAV
LP2: MOV AL.'>'
IMP SAV
LP3: MOV AL,'0'
JMP SAV
LP4: MOV AL.'-'
SAV: MOV[DI],AL
INC SI
INC DI
LOOP NEXT
96.(1)REPNZ
(2)DI
(3)MOVSB
(4)00H
(5)MOV CX,N
97.(1)MOV CX,N
(2)L
(3)A
(4) INC SI
(5) INC DI
(6)LOOP NEXT
98.(1) JNZ LW
(2) PUSH
(3)POP
(4) RESULT [DI]
(5) SOURCE [SI]
99.(1) LOWER 2
(2) 'Z'
(3)A
(4) OR AL, 20H
(5) AL
(6)INC SI
(7)DI
(8) LOOP
100.(1) MOV CX,N
(2) L
(3)JNG STORE
(4) INC SI
(5) INC DI
(6)LOOP NEXT