MOV AX，BX与MOV AX，[BX] [英] mov ax, bx vs. mov ax, [bx]

问题描述

对不起打扰，我觉得很难理解的书

有什么区别在以下两种：

  MOV AX，BX
MOV AX，[BX]
 

如果 BX 包含100H，和值在内存地址100H为23，做第二个副本，23 斧 ？

此外，有什么区别

  MOV AX，102H;移动102H的值写入寄存器斧
MOV AX，[102H]实际地址为DS：0 + 102H
 

解决方案

是的。方括号之间的操作数视为一个地址，并在该存储器地址中的值，如果取

Sorry bother, I am find difficult to understand book

What is difference in the following two:

mov ax, bx
mov ax, [bx]

If bx contains 100h, and value at memory address 100h is 23, does second one copy 23 to ax?

Also, what is difference in

mov ax, 102h ; moves value of 102h into register ax
mov ax, [102h] ; Actual address is DS:0 + 102h

解决方案

Yes. The operand between the brackets is treated as an address and the value at that memory address if fetched.

这篇关于MOV AX，BX与MOV AX，[BX]的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！