4.1 Use slide 6 as a reference to answer the questions. The instruction ADD Rd,

Question

4.1 Use slide 6 as a reference to answer the questions. The instruction ADD Rd, Rs, Rt does Reg [Rd] * Reg [Rs] + Reg [Rt] Fill in the values of the control signals generated for this instruction. RegWrite- Mem Read Men Write- ALU°peration = ALUmux = Regmux = Note: the meaning of each control signal is given below. RegWrite: 1=yes, there is a register write in this cycle, 0= no MemRead: 1-yes, there is Data Memory Read in this cycle, 0- no MemWrite: 1-yes, there is a data memory write in this cycle, 0-no ALUoperation: fill in the opcode (i.e. ADD) ALUmux: select one from ( register or l-memory) Regmux: select what to write back to register file, (output of ALU or data memory) Branch: 1-this instruction causes "Jump", 0- no

Explanation / Answer

  RegWrite = 1 as sum of Rs and Rt is written in Rd

·       ALUoperation = ADD

·       ALUmux = Register Second value is from register so AlUMux

·       Regmux = output of ALU output is from ALU

·       Branch = 0 No branching

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