| 1. | The cpu uses two units to transform the logical address into physical addresses
Cpu使用两种单元将逻辑地址转换成物理地址。 |
| 2. | The logical address is usually used when requesting information from a controller
逻辑地址通常在请求控制器中的信息时使用。 |
| 3. | Figure 3 shows the graphical representation to obtain the linear address from logical address
图3展示了从逻辑地址获得线性地址。 |
| 4. | The physical address may be different from the logical address , in which case the memory management unit translates the logical address into a physical address
物理地址可能与逻辑地址不同，内存管理单元可以将逻辑地址转换成物理地址。 |
| 5. | Because we use the non - programmable register , gdt or ldt is not referred to while the translation from the logical address to the linear address is performed
由于我们使用了不可编程寄存器，因此在将逻辑地址转换成线性地址时不引用gdt或ldt 。 |
| 6. | As with paging , this mapping requires two memory references per logical address , effectively slowing the computer system by a factor of two , unless something is done
如同对源程序编码给予定位一样，这种变换需要每一逻辑地址有两个内存参考。如果没有什么措施，则会有效地使用计算机系统运算速度降低一半。 |
| 7. | As we saw earlier in the section on linux and segmentation , each segment descriptor uses same set of addresses for linear addressing , minimizing the need to use the segmentation unit to convert logical addresses to linear addresses
前面介绍linux分段模型时已提到，每个分段描述符都使用相同的地址集进行线性寻址，从而尽可能降低使用分段单元将逻辑地址转换成线性地址的需要。 |
| 8. | In a virtual - memory system , programs are given access to a larger set of addresses than is physically available , and a dedicated memory manager maps these logical addresses to actual locations , using temporary storage on disc to hold the overflow
在虚拟内存系统中，程序可以访问超出可用物理内存的更大的地址集合，专用内存管理程序将这些逻辑地址映射到实际地址，使用磁盘上的临时存储保存超出的部分。 |
