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正当各大半导体生产厂家和计算机生产厂家在激烈地争夺16位微机市场的同时,这些厂家也相继发表了自己的32位 VLSI 微处理机产品。目前有些型号已有成品可用,有些只是刚刚发表,而有些尚处在研制骱段。但无论如何,在计算机的超级市场上将出现一块瓶领地——32位微型机市场。Zilog 公司将用刚发表的Z80000单片32位微处理器投放市场,该芯片在设计上与 Motorola 公司的 MC68020类似,设置了片上高速缓冲存贮器 Cache,它不仅提供了指令缓冲存贮能力,而且对数据也提供缓冲,保证了流水线有充足的指令流和数据流。而 MC68020仅对指令提供缓冲存贮。Motorola 认为芯片中各部件均共享系统存贮器中的单拷贝数据,可以提高系统的可靠性。MC68020的实现既有 CMOS 工艺也有NMOS 工艺。Motorola 希望通过这种途径把 MC68020
While major semiconductor manufacturers and computer manufacturers fiercely compete for the 16-bit microcomputer market, these manufacturers have also released their own 32-bit VLSI microprocessor products. At present, some models have finished products available, some just published, while others are still in development stage. However, in any case, there will be a bottle of wine in the computer supermarket - the 32-bit microcomputer market. Zilog will debut on the market with its recently announced Z80000 single-chip 32-bit microprocessor, which is similar in design to Motorola’s MC68020, with an on-chip cache, which not only provides instruction buffering, But also provides data buffering to ensure that the pipeline has sufficient instruction flow and data flow. The MC68020 only provides instruction cache. Motorola believes that the components in the chip share a single copy of the system memory data, you can improve the reliability of the system. MC68020 has both CMOS technology and NMOS technology. Motorola hopes to put MC68020 in this way