Shr word ptr
WebWORD PTRWORD PTR word pointerword pointer – 16-bit operandbit operand BYTE PTR byte pointer – 8-bit operand •Example : MOV BYTE PTR [0FF3E], 1 8 bit destination, no ambiggyuity MOV WORD PTR [BX], 0 16 bit destination no ambiguity SYSC3006 16-bit destination, no ambiguity . WebQuestion: 38 (b) SHL BYTE PTR [0400H), CL (c) SHR BYTE PTR (DI), 1 (d) SHR BYTE PTR [DI+BX), CL (e) SAR WORD PTR [BX+DI], 1 (f)) SAR WORD PTR [BX] [DI] +10H, CL 39. Assume that the state of 8088's registers and memory just prior to execution of each instruction in problem 38 is as follows: CL-oh (AX)=0000H (BX)=0010H (CX) = 0105H (DX)= 1111H ...
Shr word ptr
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WebDec 23, 2024 · SHL BYTE PTR [0400H], CL (c) SHR BYTE PTR [DI], 1 (d) SHR BYTE PTR [DI+BX], CL (e) SAR WORD PTR (BX+DI], 1 (f) ) SAR WORD PTR [BX] [DI] +10H, CL 39. Assume that the state of 8088's registers and memory just prior to execution of each instruction in problem 38 is as follows: WebNov 6, 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wordmov ax,word ptr [bx];是把内存地址等于“BX寄存器的值”的地方所存放的数据,赋予ax。由于只是给出一个内存地址,不知道希望赋予ax的,是byte还是word,所以需要用word ...
WebMUL WORD PTR [SI]; (DX)(AX) (AX) x ([SI]) ... SHR: SHR destination, count . This instruction shifts each bit in the specified destination to the right and 0 is stored at MSB position. The LSB is shifted into the carry flag. The destination can be a byte or a word. Web本来,若变量X定义成了16位的字类型变量(即用DW定义),可以直接写 MOV X, AX. 但因为X未定义成字,可能是用DB定义成了8位的字节,也可能是用DD定义成了32位的双字,直接那样写会出现两个操作数类型不一致的错误。. 所以就加上WORD PTR指定这一次将X变量地址 …
WebThe size directives BYTE PTR, WORD PTR, and DWORD PTR serve this purpose, indicating sizes of 1, 2, and 4 bytes respectively. For example: mov BYTE PTR [ebx], 2; Move 2 into the single byte at the address stored in EBX. ... shl, shr — Shift Left, Shift Right More Quotes. I have the privilege of working with a team of extraordinary students, … Guide to Using Assembly in Visual Studio .NET This tutorial explains how to use … Office Hours (Olsson 236A) Wednesdays, 2-3pm Thursdays, 1:30-2:30pm Fridays, … University of Virginia Computer Science CS216: Program and Data … WebNov 16, 2012 · word ptr中ptr的意思是指定存储器操作数的数据类型属性. 例如:. MOV word ptr [2000H],12 ;就是指定存储器的数据类型为字类型 占2个单元. 该指令把立即数12 存放在 …
WebMOV CX,WORD PTR idt_eprom +0 ; limit of eprom IDT INC CX SHR CX,1 CLD REP MOVS WORD PTR ES:[EDI],WORD PTR DS:[ESI] ; switch to RAM GDT and IDT ; LIDT IDT_pword LGDT GDT_pword ; MOV BX,GDT_ALIAS ; point DS to GDT alias MOV DS,BX ; ; copy eprom TSS to RAM ; MOV BX,INIT_TSS_A ; INIT TSS A descriptor base ; has RAM location of INIT …
WebThis animated phonics song helps children learn the sound of the trigraph SHR in English. A trigraph is a combination of three letters representing one sound... chisholm ccWebDblSAR: sar word ptr Operand+4, 1 rcr word ptr Operand+2, 1 rcr word ptr Operand, 1 DblSHR: shr word ptr Operand+4, 1 rcr word ptr Operand+2, 1 rcr word ptr Operand, 1 … chisholm catholic college waWebNov 29, 2011 · The stack-address size determines the width of the stack pointer when writing to the stack in memory and when decrementing the stack pointer. (As stated … chisholm catholic college staff listWebadc word ptr [ebx],0 ; add any leftover carry View the complete source code. Irvine, Kip R. Assembly Language for Intel-Based Computers, 2003. 26 SBB Instruction • The SBB (subtract with borrow) instruction subtracts both a source operand and the value of the Carry flag from a graphite south koreaWebConsonant Blends (scr spl spr str) – Word List and Sentences. This ESL phonics lesson features an extensive word list introducing students to the consonant blends scr/spl/spr/str, followed by several sentences that use these sounds. Download lesson as pdf. ESL Phonics Lesson: Consonant Blends - scr spl str spr. Watch on. chisholm cemeteryWebA/D转换0809应用. 一、实验目的. 1掌握A/ D转换与单片机的接口方法。. 2了解A/ D芯片0809转换性能及编程方法。. 3通过实验了解单片机如何进行数据采集。. 二、实验内容. 利用实验仪上的0809做A/ D转换实验,〖ZH (〗实验仪上的W1电位器提供模拟量输入。. 编制程序 … graphite solid structureWebAug 5, 2024 · 下面的指令中,用 byte ptr指明了指令访问的内存单元是一个字节单元 。. mov byte ptr ds: [0],1. inc byte ptr [bx] inc byte ptr ds: [o] add byte ptr [bx],2. word. 对于这个问 … graphite south australia