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设计替代现有Intel CPU的芯片是一件很困难的事情。Transmeta的Crusoe微处理器就与现有的Pentium芯片结构不同。 现代PⅢ、Pentium 4和Athlon处理器的基本指令集(不包括多媒体扩展指令集)同那些古老的386和486的CPU是非常相似的。虽然当前ADM和Intel的微结构差异很大,解码和处理指令使用了大量的“辛勤”劳动的片内晶体管,但是这些复杂的内部设计都使用一个相对古老的32位处理方案,用强制的方式将处理速度按比例提高到千兆赫兹的级别。为什么坚持使用这种古老的32位方案呢?因为兼容386和486软件是一台基于Windows的PC所必需的。
Designing chips that replace existing Intel CPUs is a difficult task. Transmeta Crusoe microprocessors and existing Pentium chip structure is different. The basic instruction set for modern PIII, Pentium 4, and Athlon processors (excluding the Multimedia Extensions) is very similar to those of the older 386 and 486 CPUs. While the current ADM and Intel architectures vary widely, decoding and processing instructions use a large amount of “hardworking” on-chip transistors, but these sophisticated internal designs use a relatively old 32-bit processing scheme that uses a coercive approach Increase processing speed to the gigahertz level. Why keep using this old 32-bit solution? Because 386 and 486 software is compatible with a Windows-based PC.