Mov ax word ptr sp

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Nettet微机原理与接口技术试卷a_试卷. 创建时间 2024/05/06. 下载量 0 Nettet22. nov. 2011 · 答案： MOV AX,WORD PTR CONAME+3-1 （注意1：.WORD PTR 是强调字属性，因为是在字节缓存区中取数。注意2.第3 个字节的写法.）把AX寄存器的内容存入从PLINE+5 开始的字节中。答案： MOV WORD PTR PLINE+5,AX （注意1：.WORD PTR 是强调字属性，因为是在字节缓存区中存数.）检查CONAME字符串中有无空格字 …

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Nettet29. aug. 2024 · mov QWORD PTR [rbp-0x30],0x4020c5 means exactly "move 0x4020c5 to a memory location rbp-0x30 and treat this number as qword" (8 - byte number). But q … Nettet11. mar. 2024 · mov ax,WORD PTR variable is loading the first 2 bytes of the variable, not the whole variable. If you want to store the first 2 bytes of eax, you have to use ax as the source operand. Thus you'd use mov WORD PTR variable, ax.The word ptr has to go on the memory operand, and it has to match the register. It's only needed at all because … geraldo rivera got hit in face with chair

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Nettetmov AX, WORD PTR B mov BH, BYTE PTR A. Stack. Hardware Stack ; SP register ; points to top of stack ; push reg/mem; SP := SP - 2 ; copy Operand to SP ; pop … NettetIn 32-bit architecture one can directly use esp to point the top of stack, which is probably the case with your c++ compiler: sub esp, 4 mov dword ptr [esp], 10 // store the integer … Nettet4. jul. 2024 · In MOV WORD PTR [addr],AX the size of AX is known to be 16-bits to again WORD PTR [addr] is a verbose way of saying [addr] so is the same as MOV [addr], AX … christina eyth rescued animal

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Nettet汇编语言期中复习资料. （含有部分参考答案，仅仅作为参考）. 1、表示段定义结束的命令是：. A、EnDS B、 EnDP C、EnDM D、EnD. 2．设BX=2000H，SI=3000H，指令MoV AX， [BX+SI+8]的源操作有效地址为（）。. A．5000H B．5008H c．23008H D．32008H. 3、标志位ZF是什么标志：. A、符号 ... http://www2.hawaii.edu/~pager/312/notes/06OperandsAndAddressing/ geraldo rivera jimmy hoffaNettet31. aug. 2024 · jmp word ptr 内存单元地址比如，下面的指令： mov sp,10h mov ax,0123h mov ds: [0],ax call word ptr ds: [0] 执行后， (IP)=0123H， (sp)=0EH。（2）call dword ptr 内存单元地址用汇编语法来解释此种格式的call指令，则： CPU执行“call dword ptr 内存单元地址”时，相当于进行： push CS push IP jmp dword ptr 内存单 … geraldo rivera episode with luis galvan

"Nettet5. okt. 2012 · –MOV WORD PTR [BX+1000H] ,1234H moves a 1234H into a word-sized memory location addressed by sum of 1000H, BX, and DS x 10H •6-byte instruction ... AX, CX, DX, BX, SP, BP, SI, and DI. 38 •PUSHF (push flags) instruction copies the contents of the flag register to the stack. " - Mov ax word ptr sp

Mov ax word ptr sp

how to does this instruction work: `mov qword ptr [rbp-0x30], …

NettetMOV AX, @DATA ; moves the constant represented by @data into AX DirectOperands. is a direct (memory) operand. MOV BX, NUM ; moves the contents of the memory variable ; NUM into AX Direct-Offset Operands A variable name +/- a numeric offset MOV BX, NUM+2 ; moves 2nd byte following NUM into BX Useful for array addressing Nettet寻址方式：. 直接寻址：. 端口地址为8位，指令中直接给出端口地址。. 可以寻256个端口. 间接寻址：. 端口地址为16位。. 指令中的端口地址必须放在DX中，可以寻址64K. IN AX,80H ;从80H端口读入16bit的数据到AX MOV DX，2400H IN AL,DX ;从2400H端口读入8bit的数据到AL中 OUT 35H ...

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Nettet26. apr. 2024 · call 指令 1、将当前的IP或者 IP和CS 压入栈 2、转移 call 标号 call far ptr 标号 call 16位 reg call word ptr 内存单元地址 call dword ptr 内存单元地址 call 标号等价汇编指令 push IP jmp near ptr 标号 call far ptr 标号等价汇编指令 push CS push IP jmp far ptr 标号 call 16位 reg 等价汇编指令 push IP jmp 16位 reg call word ptr 内存单元地址等 … Nettet8. aug. 2024 · mov ax,[ebx + 2 * esi + 2]; This WORKS! In 16 bits code the upper 16 bits of 32 bits registers are discarded. The logical address is still calculated by ((segment << …

Nettet11. des. 2013 · MOV [BX], 100这条指令，数据的类型不确定。. 汇编程序不知道你这条指令是字节操作还是字操作。. 如果你后面的源操作数不是100，而是大于255的某个数，有 … Nettet29. nov. 2011 · mov ax, word ptr [esp] - movzx eax, ax. The MASM Forum Archive 2004 to 2012: Welcome, Guest. Please login or register. April 13, 2024, 09:01:49 PM Login with username ... Topic: mov ax, word ptr [esp] - movzx eax, ax (Read 3915 times) bolzano_1989. Member Posts: 35.

Nettet例：mov ax,1 add bx,2000h; 寄存器. 指令要处理的数据在寄存器中，在汇编指令中给出相应寄存器名; 例：mov ax,bx mov ds,ax; 段地址（SA）和偏移地址（EA）指令要处理 … Nettet2. feb. 2012 · mov eax,dword ptr [edi] will simply load whatever is stored at the address edi. So it's a simple data load. Since you don't show what is at address edi …

Nettetcall word ptr内存单元地址word = 字(16位) 相当于push ip jmp word ptr内存单元地址. mov sp,10h. mov ax,0123h. mov ds:[0],ax. call word ptr ds:[0] 执行后(ip)=0123H …

Nettet16. mai 2024 · ptr – pointer （指针）缩写。汇编里面 ptr 是规定的字 (保留字)。 mov ax,bx;是把BX寄存器“里”的值赋予AX，由于二者都是word型，不用word mov … christina eyth mystery animalNettetmov AX, WORD PTR B mov BH, BYTE PTR A. Stack. Hardware Stack ; SP register ; points to top of stack ; push reg/mem; SP := SP - 2 ; copy Operand to SP ; pop reg/mem; TOS copied to Operand ; SP := SP + 2 ; push AX pop AX push Num pop Num.STACK 100h. Stack size specified in Bytes ; 100h ; Items pushed and popped as words ; 100h … christina eyubogluNettet13. mar. 2024 · 如果使用的是带有偏移量的形式，如 "POPF word ptr [bx+si+42]"，则需要先计算出内存地址，然后从该地址中读取 16 位的数据，并将其存储到标志寄存器中。具体的地址计算过程取决于寻址模式，如基址加变址模式（base-indexed addressing mode）、比例因子加基址加变址模式（scaled-indexed addressing mode）等。 christina faber judoNettetmov ax，dx mov cx，bx mov dx，bx mov dx，es 学习文档 jmp cx 图3.10 段内间接寻址示意图学习文档 jmp word ptr [bx] ds 8 0 0 0 bx + 1000 81000 31000h 操作码 32000h 操作码 cs 3 0 0 0 ip + 2000 32000 81000h 00h 20h 图3.10 段内间接寻址示意学习图文(档cs内容不变，仅改变ip值) 3.2.1 数据传送指令 1. christina eyth animal rescueNettet执行下面的程序段后，data1单元的值是_____。 data1 db 10h，20h data2 db 30h，40h mov ax，word ptr data1 cmp ax，word ptr data2 geraldo rivera letchworth villageNettet4. mar. 2024 · 设X、Y、Z、W均为双字长数据，各自的低十六位数和高十六位数分别存放在X、X+2、Y、Y+2、Z、Z+2的存储单元中，结果的低十六位字和高十六位字分别存放在W和W＋2两个单元中。JD 答：首先打开未来汇编，新建一个空的汇编文件，后缀为.asm，然后输入汇编程序代码，保存，再编译成机器指令，然后连接 ... geraldo rivera looking for jimmy hoffaNettetassume cs:code, ds:data, ss:stack stack segment db 100 dup(0) stack ends data segment db 100 dup(0) data ends code segment start: ; 将ds、ss指向程序的数据段和栈段 mov ax, data mov ds, ax mov ax, stack mov ss, ax ; 传入参数 push 1h push 2h ; 调用方法; 相当于 sum(1, 2); call sum ; 程序结束 mov ax, 4c00h int 21h sum: ; 当前sp的值复制给bp，用 … christina eyth rescued