Shigeya Tanaka, T. Hotta, M. Iwamura, T. Yamauchi, T. Bandoh, A. Hotta, T. Nakano, S. Iwamoto, S. Adachi
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A BiCMOS 32-bit execution unit for 70 MHz VLSI computer
A BiCMOS 32-bit execution has been developed to attain 70-MHz (typical) speed using 1.0-μm BiCMOS technology. The three important components are: (1) an arithmetic unit, which uses a 0.6-ns 8-bit carry propagation circuit; (2) a 2.5-ns 54-W×32-b four-port register file, which uses a BiCMOS sense circuit and dynamic bus drivers; and (3) a flag generator, which uses a novel all-bit-zero generation algorithm and generates in parallel with the arithmetic computation. A CLSI computer has been implemented with the above components, and 70-MHz register-register operation has been achieved
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