Logic Design of a 16-bit Bit-Slice Arithmetic Logic Unit for 32-/64-bit RSFQ Microprocessors
2018
A 16-bit bit-slice arithmetic logic unit (ALU) is proposed for 32-/64-bit rapid single-flux-quantum microprocessors. It is based on a Ladner-Fischer adder. The ALU covers all of the ALU operations for MIPS32 instructions set. And each of the two 64-bit operands is divided into four slices of 16 bits each. The ALU uses synchronous concurrent-flow clocking and consists of 11 pipeline stages. The proposed ALU can be used for any 16n-bit processing.
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