There are four “cultures” of microprogramming: the Bit-Slice Culture, the Commercial Processor Culture, the Microprogrammable Processor Culture, and the Single-Chip Culture. The effect of trends in VLSI (Very Large Scale Integration) on microprogramming can be assessed by looking the effect on each culture. The Bit-Slice Culture will be affected because levels of integration in bipolar have reached 32-bit slices and the performance of CMOS is improving to compete with the dominant bipolar technologies in these applications. The Commercial Processor Culture and the Microprogrammable Processor Culture will be least affected by changes in Technology and integration levels. The Single-Chip Culture will be most affected. There are about two more microprocessor generations to go before chips contain an essentially complete CPU. After that, designs will diversify. Microprogramming still has a good future.
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The impact of VLSI on microprogramming
Tredennick, N.
Follow ACM SIGMICRO Newsletter
, Volume 17 (4)
Association for Computing Machinery – Dec 21, 1986
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