... memory k address segister 存储地址寄存器 memory reference address 存储器访问地址 memory-address counter 记忆地址计数器 ...
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它具有一个18位的地址空间，可以访问256kb的本地存储器，后者是芯片本身的一个部分。
It has an 18-bit address space that accesses 256kb of local store that are part of the chip itself.
PPE用载入和存储指令访问主存储器(有效地址空间)，可以在主存储器与内容可以缓存的私有寄存器文件之间移动数据。
The PPE accesses main storage (the effective-address space) with load and store instructions that move data between main storage and a private register file, the contents of which may be cached.
MMU的功能是控制各种存储系统的工作并将虚地址转换成物理地址，以及控制存储器访问权限。
The functions of the MMU are to control the various memory systems, translate the virtual addresses into physical addresses and control the access permission.
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