Computer Organization and Design MIPS Edition, Fifth Edition: The Hardware/Software Interface (The Morgan Kaufmann Series in Computer Architecture and Design)
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Chapter 2, Problem 2.16E
Program Plan Intro

R-Type instruction:

  • All the data values used by the instruction are located in registers that time R instruction is used.
  • R-type instruction is used by the register-to-register arithmetic (add, sub etc).
oprsrtrdshamtfunc

       6 bits         5 bits         5 bits         5 bits         5 bits        6 bits

op – it is an opcode used to selects a particular operation.

rs and rt – are the first and second source registers.

rd – it is the destination register.

shamt – it is only used for shift instruction.

func – it is used together with “op” to choose an arithmetic instruction.

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