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On the surface, protected mode and real mode is not much difference between the...
从表面上看,保护模式和实模式并没有太大的区别,二者都使用了内存段、中断和设备驱动来处理硬件,但二者有很多不同之处。我们知道,在实模式中内存被划分成段,每个段的大小为64KB,而这样的段地址可以用16位来表示。内存段的处理是通过和段寄存器相关联的内部机制来处理的,这些段寄存器(CS、DS、 SS和ES)的内容形成了物理地址的一部分。具体来说,最终的物理地址是由16位的段地址和16位的段内偏移地址组成的。用公式表示为:物理地址=左移4位的段地址+偏移地址。-On the surface, protected mode and real mode is not much difference between the two are the use of the memory, Drivers interruption and equipment to deal with the hardware, but there are many differences. We know that in real mode which has been divided into memory, each the size of 64 KB. and the addresses of 16 can be used to express. Memory of the handling of the adoption and register linked to the internal mechanisms to deal with, of these registers (CS, DS, SS and ES) with the formation of a part of the physical address. Specifically, the ultimate physical address is 16 of the 16 addresses and the addresses of migration within the composition. The use of the formula is expressed as : physical address = 4 bits of the address offset address.
- 2023-02-13 11:45:04下载
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只想下载 只想下载 只想下载 只想下载
只想下载 只想下载 只想下载 只想下载 -Just want to download just want to download just want to download just want to download just want to download just want to download just want to download just want to download
- 2022-06-12 21:05:30下载
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用VB编写的接收卫星接收机的是数据,在把数据通过打点法显示最后的图形...
用VB编写的接收卫星接收机的是数据,在把数据通过打点法显示最后的图形
-VB prepared by the receiver to receive satellite data, the data showed the cook through the final Graphics
- 2022-07-12 12:43:26下载
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有限元计算基本程序,为毕业论文时编写的局部渗流计算程序。...
有限元计算基本程序,为毕业论文时编写的局部渗流计算程序。-Finite element method the basic procedures for the thesis prepared by local seepage calculation procedures.
- 2022-06-19 04:26:08下载
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Using turbo C series Tetris game for beginners, programming enthusiasts have ref...
用turbo C编的俄罗斯方块小游戏,对初学者、编程爱好者有参考价值-Using turbo C series Tetris game for beginners, programming enthusiasts have reference value
- 2022-04-22 19:19:22下载
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一个完整经典的拼图游戏。(随书光盘上的)
一个完整经典的拼图游戏。(随书光盘上的) -a complete classic pieces of the jigsaw. (On the CD with the book)
- 2022-03-25 23:30:18下载
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一种游戏节目virtuanes097
a kind of game programme virtuanes097
- 2022-09-18 17:20:03下载
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一个简单的扫雷游戏
该源程序利用C++语言实现了一个基于命令行的简单扫雷游戏,源程序中详细描述了构建该游戏所需要的数据结构以及算法实现流程,利用该源代码,同时结合界面编程技术,可以实现基于可视化界面的扫雷游戏。
- 2022-03-24 22:36:46下载
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其中起始码和结束码表示控制命令的起始与结束。当设备在RS
其中起始码和结束码表示控制命令的起始与结束。当设备在RS-232总线上捕捉到数据FFH时,表示后续有控制命令写入,当接收到数据AAH后,表示接收到的控制字已经结束且完整有效。中间四个字节分别代表设备的地址、指令类型、指令参数1(OPT1)和指令参数2(OPT2)。设备在对这四个字节的内容进行译码后执行相应的操作-整有效。中间四个字节分别代表设备的地址、指令类型、指令参数1(OPT1)和指令参数2(OPT2)。设备在对这四个字节的内容进行译码后执行相应的操作
- 2022-02-05 03:52:12下载
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多普达P800 RUU直接 刷机 工具`
多普达P800 RUU直接 刷机 工具`-Dopod P800 RUU Brush tool directly `
- 2022-03-30 06:21:52下载
- 积分:1