Mov bx word ptr 2200h

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August undefined, 2024

Nettet8. feb. 2013 · 8086 assembly, about the PTR operator. this might be simple and silly but i'll ask it anyway since i don't seem to be able to figure it out. assume cs:code, ds:data data segment b dd 256 data ends code segment start: mov ax,data mov ds,ax mov ax,word ptr b -> the result of this operation will be ax:= 256 (100h) mov bx,word ptr b+1 -> … http://www2.hawaii.edu/~pager/312/notes/06OperandsAndAddressing/

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Nettet6. nov. 2024 · 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 ax,word ptr [bx];是把内存地址等于“BX寄 … Nettet5. nov. 2024 · Some can also extract the audio from the MOV file and save it as an MP3. Even the VLC media player program mentioned above, which can open MOV files, can … heated floor mats for outdoors

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Nettet7. jun. 2009 · mov word ptr [si+22h],1200h;执行后12486h为00h,12487h为12h lds si,[si+20h];执行后si为0464h，ds为1200h ... mov bx, dx pop cx loop in_x;-----in_end: disp_str msg3 ;宏调用，提示 num is : mov ah, 1 ;输入字符. int 21h cmp al, 30h je exit ;'0 ... NettetLEA BX, VAR1 MOV BX, OFFSET VAR1 are even compiled into the same machine code: MOV BX, num num is a 16 bit value of the variable offset. Please note that only these registers can be used inside square brackets (as memory pointers): BX, SI, DI, BP! (see previous part of the tutorial). Nettet3. nov. 2004 · For example if the memory value is 200h, the value IÂ´m interested in is word size and I want to store it in dx the code I use is the following: mov dx, word ptr … heated floor mats for carpet

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MOV AX WORD PTR[BX] 怎么理解啊 -CSDN社区

Nettet18. jun. 2024 · 微机原理(判断题)(指令正误).doc,指出下面指令正误，对错误指令说明错误原因 mov ds ,100×立即数不能直接送到段寄存器 mov [1200h] , 23h×目的操作数不能确定是字节属性还是字属性等 mov [1000h] , [2000h] ×存储器之间不能直接传送数据 mov 1020h , cx×立即数不能作为目的操作数 mov ax , [bx+bp+0100h] ×目的操作数的 ... Nettet21. jun. 2024 · 操作数的物理地址＝ (DS) × 16＋ (BX)＋20H = 60000H＋0800H＋20H= 60820H 3.3 假设 (DS)= 212AH, (CS)= 0200H, (IP)= 1200H, (BX)= 0500H,位移量DATA=40H， (217A0H) =2300H， (217E0H)=0400H， (217E2H) =9000H 试确定下列转移指令的转移地址. (1) JMP BX (2) JMP WORD PTR [BX] (3) JMP DWORD PTR … mouthwatch setup passwordNettet7. des. 2024 · a、push word ptr 20[bx+si-2] b、add bx,oddset a c、lea bx,4[bx] d、mov byte ptr[bx], 1000 正确答案： d 我的答案：c. 分析; a：push都是以字为单位的，先 … heated floor mats canada

"Nettet7. feb. 2013 · mov ax,word ptr b is easier to understand when formatted like this: mov ax, word ptr [b] which has effect of copying a word at address b into ax. So this. mov … " - Mov bx word ptr 2200h

Mov bx word ptr 2200h

Nettet2. mai 2012 · Give the contents of registers al, bx, and dl after the execution of mov al, byte ptr VarM + 1 mov bx, word ptr VarM + 2 mov dl, byte ptr VarM + 3 Now I know word ptr and byte ptr by definitions but I am unable to pickup the concept of them. According to me al = b bx = 0 dl = F Please help me out in understanding these. … Nettet4. jun. 2024 · mov ax, word ptr num. When you wrote this mov ax, word ptr num you effectively asked to retrieve only the lowest word (2 bytes) at the "num" address. You got the 1st byte 33h in AL and the 2nd byte 04h in AH, combined in one register: AX=0433h. mov bx, word ptr num+ 2. This one works similarly but will instead give only the …

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Nettet5. jul. 2024 · 43 7. WORD PTR [d] is verbose way of saying [d] since the size of the data doesn't matter in getting its address. Would be the same as saying LEA AX, [d] which moves the address of d to AX. 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 … Nettet⑴ MOV BX, WORD PTR[2200H] 源操作数:直接寻址;目的操作数:存放器寻址 ⑵ AAA 源操作数:存放器寻址AL(也称隐含寻址);目的操作数:存放器寻址 ⑶ JUM 2200H 程序转移段 …

Nettet24. jun. 2024 · 指令MOV AX,COUNT [BX]，若COUNT=0400H,SS=1200H,DS=1000H,BX=5000H，那么物理地址为（） A 17400H … NettetMOV WORD PTR DATOS1, 5. Seleccione una instrucción que requiere DWORD PTR. ... MOV CX,[BX] MOV [SI], CX: Permite que los datos se direccionen en la posición de memoria a la que apunta un registro base (BP y BX) o un registro índice (DI y SI) Inmediato: MOV CX,1234H: MOV CX, 34H:

Nettet解答如下： ①MOV AX,1200H 将十六进制数1200H赋给寄存器AX，执行这条指令后，AX的值为1200H ②MOV AX,BX 将BX寄存器的值赋给寄存器AX，因为BX最初的值为0100H，所以执行这条指令后，AX的值为0100H ③MOV AX, [1200H] 将内存偏移地址1200H处存储的数据存入AX中。按照：“数据段的段地址DS左移4位二进制位后+偏移 … 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 …

Nettet24. feb. 2024 · The MOV file format is a so-called container file format, which can bundle multiple elements like video, audio, and subtitles, as well as metadata, such as … mouth watch softwareNettet12. jun. 2024 · 1.mov ax, [100h]; 直接寻址 2000h*10h+100h = 20100h 2.mov ax, [bx]; 寄存器间接寻址 2000h*10h+0100h = 20100h 3.mov ax,es: [bx]; 寄存器间接寻址 … mouthwatch quick start guideNettetMOV BX,20H 是将20H送给BX寄存器，不是内存 MOV WORD PTR [BX],2000H 将2000H送内存，指令执行后： 22400H处为00H，22401H处为20H 抢首赞评论 heated floor mats for the houseNettet30. mar. 2016 · MOV BX，OFFSET C MOV AX， [BX] ADD B，AX MOV AX，2 [BX] SAL AX，1 ADD AX，B MOV A，AX … CODE ENDS 3、假设（DS）＝2000H，（SS）＝2000H， (ES)=3000H, （SP）＝0A200H，（AX）＝0E90H，（BX）＝0214H，（30214H）＝2400H， … mouthwatch sensorNettet20. okt. 2024 · Here the PTR operator is used to specify the type of the operand. The following examples illustrate this use: MOV WORD PTR [BX], 5 ;set word pointed to by BX = 5 INC DS:BYTE PTR 10 ;increment byte at offset 10 ;from DS This form can also be used to override the type attribute of a variable or label. mouthwatch promo codeNettet20. feb. 2024 · mov ds, bx mov al， [0] // 表示将内存中数据段地址 ds: [0] 对应的一个字节的数据写入al 通用寄存器中。 (1)上面3条指令的作用是将10000H (1000:0) 中的内存数据复制到al寄存器中. (2)mov al, [address] 的意思将DS:address 中的内存数据赋值到al寄存器中。 (3)由于al 是8位寄存器，所以是将一个字节的数据赋值给al寄存器 8086 不支持直 … mouthwatch sleevesNettet30. jan. 2010 · MOV是数值传送指令，AX是目的操作数，WORD PTR表示后面的储存单元是字类型， [BX]表示用BX的值来寻址，默认段地址是DS的值。 BMCRNET 2008-03 … heated floor mats for garage