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What is Rs and RT?

Published in Computer Architecture 1 min read

Rs and Rt, in the context provided, represent specific registers within a particular instruction set architecture (ISA). Based on the reference, here's a breakdown:

Rs and Rt are the first and second source registers, respectively, used in an instruction. They hold the data that the instruction will operate on. In contrast, Rd is the destination register, where the result of the operation will be stored.

Here's a table summarizing the roles of Rs, Rt, and Rd:

Register Description
Rs The first source register.
Rt The second source register.
Rd The destination register; stores the result.

Other elements that can be included in instructions are:

  • shamt: "Shift amount," used specifically for shift instructions.
  • func: Used together with the "op" (opcode) field to select a specific arithmetic or logical operation.

In summary, Rs and Rt are the registers that provide the input values for an operation, while Rd is where the output is stored.

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