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发表于 2009-10-8 23:57:37
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There are currently no mainstream general-purpose processors built to operate on 128-bit integers or addresses, though a number of processors do operate on 128-bit data. System/370, made by IBM, could be considered the first rudimentary 128-bit computer as it used 128-bit floating point registers. Most modern CPUs such as the Pentium and PowerPC have 128-bit vector registers used to store several smaller numbers, such as four 32-bit floating-point numbers. A single instruction can operate on all these values in parallel (SIMD). They are 128-bit processors in the sense that they have 128-bit registers, but they do not operate on individual numbers that are 128 binary digits in length.
多查查资料,哪来的真正意义上的128位CPU?目前只是有些处理器能处理部分128位的数据罢了。
而128位的意义,现在看来也就是更新换代——就像64位相对于32位的意义。
至于,Linux内核,还未听说支持128位,连计划都没有;微软那也只是说说吧。毕竟机器都没出来,怎么去设计? |
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