1: 用不超過3條XCHG指令對4個8位寄存器的值重新排序，A,B,C,D調整為D,C,B,A

.386
.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data.code
main PROCmov al,'A'mov bl,'B'mov cl,'C'mov dl,'D'xchg al,dlxchg bl,clINVOKE ExitProcess,0
main ENDP
END main

2: 用一條算術運算指令和奇偶標志位判斷信息字節是偶校驗還是奇校驗，設AL中的信息字節為0111 0101

.386
.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data.code
main PROC     mov al,75h   ;假設信息字節為 0111 0101add al,1     ;加1，如果奇偶標志位為1，那么信息字節就是偶校驗否則是奇校驗INVOKE ExitProcess,0
main ENDP
END main

3: 用字節操作數實現兩個負整數相加，使溢出標志位為1 用加法使零標志位和進位標志位同時置1 用減法使進位標志位為1 使用進位標志位與溢出標志位同時為1

.386
.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data.code
main PROCmov al,81hadd al,80h ;溢出標志位為1mov al,80hadd al,80h ;零標志位與進位標志位為1mov al,70hsub al,80h ;進位標志位為1mov al,81hadd al,80h ;進位標志位與溢出標志位都為1INVOKE ExitProcess,0
main ENDP
END main

4: 實現算術 EAX = -val2+7-val3+val1 AX = (val4+BX)-val5

.386
.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
val1 DWORD 11
val2 DWORD 22
val3 DWORD 33val4 WORD 44
val5 WORD 55 .code
main PROC;EAX = -val2+7-val3+val1neg val2mov eax,val2add eax,7sub eax,val3add eax,val1;AX = (val4+BX)-val5mov ax,val4add ax,bxsub ax,val5INVOKE ExitProcess,0
main ENDP
END main

5: 在一個雙字數組中迭代，用帶比例因子的變址尋址，計算元素總和

.386
.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
listD DWORD 1,2,3,4,5,6.code
main PROCmov eax,0mov ecx,LENGTHOF listDmov esi,ecx
L1:   sub esi,1add eax,listD[esi * TYPE listD]loop L1INVOKE ExitProcess,0
main ENDP
END main

6: 多個常用運算符運用例子

.386
.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
lMyBytes LABEL WORD  ;插入LABEL定義類型使用myBytes直接送入16位寄存器
myBytes BYTE 10h,20h,30h,40h
ALIGN 1              ;使用myBytes對齊到偶數地址
lMyWords LABEL DWORD  ;插入LABEL定義類型使用myWords直接送入32位寄存器
myWords WORD 3 DUP(?),2000h
myStrings BYTE "ABCDE".code
main PROCmov eax,TYPE myBytes ;1mov eax,LENGTHOF myBytes ;4mov eax,SIZEOF myBytes ;4mov eax,TYPE myWords ;2mov eax,LENGTHOF myWords;4mov eax,SIZEOF myWords  ;8mov eax,SIZEOF myStrings ;5mov dx,WORD PTR myBytes  ;將myBytes前兩個字節送往DX,值為2010hmov al,BYTE PTR [myWords+1] ;將myWords的第二個字節送入ALmov eax,DWORD PTR myBytes  ;將myBytes全部四個字節送入EAXmov eax,lMyWords   ;使用LABEL定義的類型將myWords直接送入32位寄存器mov ax,lMyBytes   ;使用LABEL定義的類型將myBytes直接送入16位寄存器INVOKE ExitProcess,0main ENDP
END main

7: 大端轉小端

.386
.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
bigEndian BYTE 12h,34h,56h,78h
littleEndian DWORD ?.code
main PROCmov eax,DWORD PTR bigEndianmov littleEndian,eaxINVOKE ExitProcess,0
main ENDP
END main

8: 交換數組元素對，元素i與元素i+1交換，元素i+2與元素i+3交換

.386
.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
dwordList DWORD 1,2,3,4,5,6.code
main PROCmov ecx,LENGTHOF dwordListmov eax,0
L1:	mov esi,dwordList[eax * TYPE dwordList]inc eaxxchg esi,dwordList [eax * TYPE dwordList]dec eaxmov dwordList [eax * TYPE dwordList],esiadd eax,2dec ecxloop L1INVOKE ExitProcess,0
main ENDP
END main

9: 數組元素間隔之和，假設數組為0、2、5、9、10,則元素間隔為2、3、4、1,總和為10

.386 
.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
dwordList DWORD 0,2,5,9,10.code
main PROCmov ecx,LENGTHOF dwordList -1mov eax,0
L1:	 mov ebx,ecxmov esi,dwordList[ebx * TYPE dwordList]dec ebxsub esi,dwordList[ebx * TYPE dwordList]add eax,esiloop L1INVOKE ExitProcess,0
main ENDP
END main

10: 將字數組復制到雙字數組

.386
.model flat,stdcall.stack 4096
ExitProcess PROTO,dwExitCode:DWORD.data
wordList WORD 1,2,3,4,5,6
dwordList DWORD 5 DUP(?).code
main PROCmov ecx,LENGTHOF wordList
L1:   dec ecxmovzx eax,wordList[ecx * TYPE wordList]mov dwordList[ecx * TYPE dwordList],eaxinc ecxloop L1INVOKE ExitProcess,0
main ENDP
END main