This register is used to limit the amount of memory that a partition can access in real mode.
这个寄存器用于限制分区在实模式中可以访问的内存量。
Other than the IDT and interrupt descriptors, the protected mode interrupt functions like the real mode interrupt.
除了IDT和中断描述符，保护模式中断像实模式中断一样发挥功能。
When your PC boots up it is in what is known as Real Mode, you have to switch your machine into Protected Mode, THEN jump to your kernel image.
当您的电脑启动后它进入的是实模式，您必须把机器切换入保护模式，然后再跳入您的内核映像。
内核实模式代码。
内核实模式代码。
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