保护模式

I went out and purchased an 80286 assembly language book that included some protected mode examples, and I was off to learn.

我去买了一本包含一些保护模式例子的80286汇编语言的书籍，然后就开始学习。

Protected mode allows for 16M of memory but is also capable of protecting the operating system and programs from accident and deliberate destruction by users, a feature that is absent in the single-user 8088/8086 Virtual memory is a way of fooling the microprocessor into thinking that it has access to an almost unlimited amount of memory by swapping data between disk storage and RAM.

在保护模式下系统可用16M的内存寻址并且可防止操作系统或程序被用户不经意或故意破坏。这个特征是单用户8088/8086所不具备的。所谓虚拟内存就是通过在磁盘存储器与RAM中交换数据将微处理器骗过，使之认为它有无限大的内存寻址空间。

Also, EMM386 will provide VCPI memory and switch DOS into the protected and V86 mode automatically.

同样，EMM386将自动提供VCPI内存和切换到DOS保护模式及V86方式。

Now we want to move to protected mode ...

现在我们要进入保护模式中了。。。

Section 10.3 of the INTEL 80386 PROGRAMMER'S REFERENCE MANUAL 1986 states : Immediately after setting the PE flag,the initialization code must flush the processor's instruction prefetch queue by executing a JMP instruction.The 80386 fetches and decodes instructions and addresses before they are used; however, after a change into protected mode, the prefetched instruction information (which pertains to real-address mode) is no longer valid.

INTEL 80386 程序员参考手册1986 中指出：在设置 PE 为1后，初始化代码必须通过一个 Jmp 指令来清空处理器取指队列，在这之前80386先完成了取指和译指和寻址，然而，在进入保护模式之后，取指指令的信息就无效了。

Section 10.3 of the INTEL 80386 PROGRAMMER'S REFERENCE MANUAL 1986 states : Immediately after setting the PE flag,the initialization code must flush the processor's instruction prefetch queue by executing a JMP instruction.

INTEL 80386 程序员参考手册 1986 中指出：在设置 PE 为 1 后，初始化代码必须通过一个 Jmp 指令来清空处理器取指队列，在这之前 80386 先完成了取指和译指和寻址，然而，在进入保护模式之后，取指指令的信息就无效了。

We are in protected mode now.

现在，我们已经处于保护模式了。

However, it's not the case in Windows Vista, due to introduction of Protected Mode security feature.

不过，它并非如此，在Windows Vista中，由於引入保护模式的安全功能。

So you get a choice if you decided not to on Protected Mode.

这样，您就能选择，如果你决定不就保护模式。

Protected mode memory is designed to prevent this from happening.

保护模式下的内存被设计为预防这种类似事情发生。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了