-bit protected mode的意思|示意

In the days before Windows, this is a very important function, but the 32-bit "protected mode" software does not use BIOS, therefore the use of this feature and even less.

在Windows以前，这是一个非常重要的功能，但是32位的“保护模式”软件不使用BIOS，因此今天这个功能的用途就更少了。

NTLDR loads the basic memory configuration and switches to 32-bit mode (protected mode). NTLDR then places itself into high memory to free up as much memory space as possible.

NTLDR载入基本的内存配置并转为32位模式(保护模式)。然后NTLDR将自己放入高内存以尽可能多地释放内存。

For a code to be able to run with access to 64-bit registers, another kind of protected mode is employed, called long mode.

一个代码能够访问64位寄存器，采用另一种保护模式，称为长模式。

The problem is that this works when the CPU is in 32-bit VPAM (Virtual Protected Address Mode), which is what an i386 OS USES, but not when the CPU is in the so-called "Long Mode" that AMD introduced.

问题是这个工程时，CPU在32位vpam(虚拟保护地址方式)，这是一种什么i386操作系统使用，但不是当CPU是所谓的“长”模式，AMD推出。

With these data structures, code modules, and system registers initialized, the processor can be switched to protected mode by loading control register CR0 with a value that sets the PE flag (bit 0).

当设置好这些数据结构，代码段以及系统寄存器之后，可以通过设置控制寄存器CR0的PE位(第0位)为1来进入保护模式。