The 68040 32-b monolithic processor

A 32-b single-chip processor has been developed that is user object-code compatible with members of the 68000 processor family. The 14-4-mm*15.5-mm device contains over 1.2 million transistors and is fabricated with a double-layer-metal CMOS process. The processor integrates three major functional units: an integer processor: a floating-point processor; and a Harvard-style memory unit. Each major unit is described, and the implementation techniques that were employed and selected circuit issues that were confronted in the design are discussed.<
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