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e following datapath with an Arithmetic Logic Unit an eight-register nsi register file organized around a single bus. The ALU is to apply add, subtract,
e following datapath with an Arithmetic Logic Unit an eight-register nsi register file organized around a single bus. The ALU is to apply add, subtract, and so on operations to its two input operands to generate an output result. The register file has ain asynchronous read and a synchronous write. That is, as soon as the Read Enable (RE) is asserted, the register file selects the indicated 32-bit register and presents its value on the Data Out (DO). On the other hand, the Write Enable (WE) is sampled only on the rising edge of the clock, and only writes the indicated register from the Data In (DI ines on the same edge that WE is asserted. The ALU and Register File share the Bus via a 32-bit wide 2:1 multiplexer. When SelALU is set to 1, the ALU path is connected to the Bus. Otherwise, the Register File path is connected to the Bus. The datapath must support three-address instructions of the form Rz f Rx
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