dsirr（数据存储中断原因寄存器）表示发生的页面错误的类型。

The dsirr (Data Storage Interrupt reason Register) indicates the type of page fault that has occurred.

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dsisr(数据存储中断状态寄存器)表示页面错误无法解决的原因。

The dsisr (Data Storage Interrupt Status Register) indicates why the page fault could not be resolved.

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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.

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