bit address

基本解釋

First is the concept of a 32-bit address space, as opposed to a 64-bit address space.
相對(duì)于 64 位地址空間，我們首先來(lái)看一下 32 位地址空間這個(gè)概念。
The SPEs do not have direct access to main memory, but only a small (256K on the PS3) local store (LS) which is in an independent, 32-bit address space.
SPE 不能直接訪問(wèn)主存，只能訪問(wèn)很小一部分（PS3 上 256K）的本地存儲(chǔ) (LS)，LS 是一個(gè)獨(dú)立的 32 位地址空間。
Although the processors can store 32-bit address values, the top eight bits (actually more than eight, on the 68008) are not wired to anything, and have no effect.
盡管處理器可以存儲(chǔ) 32 位地址值，但是高 8 位（實(shí)際上在 68008 中多于 8 位）并沒(méi)有被使用，因此這樣做也不會(huì)產(chǎn)生什么影響。

When Vint and his colleagues chose that 32-bit address space they thought they were just making a simple engineering tradeoff based on a seemingly predictable future.
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