Which two elements are required to implement R-format arithmetic logic unit (ALU) operations?
Question
Which two elements are required to implement R-format arithmetic logic unit (ALU) operations?
Solution
To implement R-format arithmetic logic unit (ALU) operations, two elements are required:
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Opcode: This is the operation code that specifies the operation to be performed by the ALU. In R-format instructions, the opcode is always 0.
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Function Field: This is a field in the instruction format that further specifies the exact operation to be performed by the ALU. For example, in an R-format instruction, the function field can specify operations like add, subtract, AND, OR, etc.
These two elements together determine the specific ALU operation to be performed in R-format instructions.
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