高频定制CMOS S/390微处理器

Proceedings International Conference on Computer Design VLSI in Computers and Processors Pub Date : 1997-07-01 DOI:10.1109/ICCD.1997.628874

C. Webb, J. Liptay

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引用次数: 56

摘要

S/390 G4 CMOS处理器是IBM ESA/390架构在单个定制CMOS芯片上的实现。这是一种新的设计，它使用了一个简单的管道，既实现了快速的周期时间，又加快了设计周期。这些复杂的指令是使用一种称为millicode的具有高度特权的子程序来实现的。为了在保持高时钟频率的同时实现高数据完整性，芯片包含重复的I和e单元，它们每个周期执行相同的操作，并比较它们的结果。

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A high-frequency custom CMOS S/390 microprocessor

The S/390 G4 CMOS processor is an implementation of the IBM ESA/390 architecture on a single custom CMOS chip. It is a new design which uses a straightforward pipeline both to achieve a fast cycle time and to speed the design cycle. The complex instructions are implemented using a highly privileged subroutines called millicode. To achieve high data integrity while maintaining a high clock frequency, the chip contains duplicate I- and E-units which perform the same operations each cycle and have their results compared.

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Proceedings International Conference on Computer Design VLSI in Computers and Processors

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