80868088d指令.doc

我现将指令系统中各种助记符的英文全名写出来，各种助记符的记忆就会变得很简单o(_∩)o... 一、数据传送指令 ?????1. ????????MOV（Move） 传送 ????????PUSHPush?onto?the?stack） 进栈 ????????POPPop?from?the?stack） 出栈 ????????XCHGExchange） 交换 ?????2. ????????IN(Input)??? 输入 ????????OUT(Output)??? 输出 ????????XLAT(Translate)??? 换码 ?????3. ????????LEA(Load?effective?address) 有效地址送寄存器 ????????LDS(Load?DS?with?Pointer) 指针送寄存器和DS ????????LES(Load?ES?with?Pointer) 指针送寄存器和ES ?????4. ????????LAHF(Load?AH?with?flags) 标志送AH ????????SAHF(store?AH?into?flags) AH ????????PUSHF(push?the?flags)? 标志进栈 ????????POPF(pop?the?flags)? 标志出栈 二、算术指令 ?????1. ????????ADD(add) 加法 ????????ADC(add?with?carry) 带进位加法 ????????INC(increment) 加1 ?????2. ????????SUB(subtract) 减法 ????????SBB(subtract?with?borrow) 带借位减法 ????????DEC(Decrement) 减1 ????????NEG(Negate) 求补 ????????CMP(Compare) 比较 ?????3. ????????MUL(Unsigned?Multiple) 无符号数乘法 ????????IMUL(Signed?Multiple) 带符号数乘法 ?????4. ????????DIV(Unsigned?divide) 无符号数除法 ????????IDIV(Signed?divide) 带符号数除法 ????????CBW(Convert?byte?to?word) 字节转换为字 ????????CWD(Contert?word?to?double?word) 字转换为双字 三、逻辑指令 ?????1. ????????AND(and)??????????? 逻辑与 ????????OR(or)??????????? 逻辑或 ????????NOT(not)?????????? 逻辑非 ????????XOR(exclusive?or) 异或 ????????TEST(test)???????? 测试 ?????2. ????????SHL(shift?logical?left)?????????? 逻辑左移 ????????SAL(shift?arithmetic?left)??????? 算术左移 ????????SHR(shift?logical?right)????????? 逻辑右移 ????????SAR(shift?arithmetic?right)?????? 算术右移 ????????ROL(Rotate?left) 循环左移 ????????ROR(Rotate?right) 循环右移 ????????RCL(Rotate?left?through?carry) 带进位循环左移 ????????RCR(Rotate?right?through?carry) 带进位循环右移 四、串处理指令 ??????1. ????????REP(Repeat)?? 重复串操作直到(CX)=0 REPE(Repeat?when?empty)?????若(CX)=0，则退出,否则CX=CX+1; REPZ(Repeat?when?flag?)??????若ZF=0，则退出,否则CX=CX+1; REPC(Repeat?when?carry?flag) REPNE(Repeat?when?not?empty) REPNZ(Repeat?when?not?zero?flag) REPNC(Repeat?when?not?carry?flag) ??????2.串操作指令 ????????MOVSB?(Move?string?of?byte)?? 串传送指令 MOVSW(Move?string?of?word) 串传送指令 CMPSB(Compare?string?of?byte) 串比较指令