MIPS Assembly Language Q1 The multiplexer used to select the

MIPS Assembly Language.

(Q1) The multiplexer used to select the next instruction after a branch instruction is piloted by an AND port. Which are the input of this port?

(a) The Zero output from the ALU and the PC

(b) The Opcode field from the instruction plus the ALU output

(c) The branch signal from the ALU Control and the Zero signal from the ALU

(d) The branch signal from the Control Unit and the Zero output from the ALU

Solution

d)

For PCSrc control line: an AND gate is used to combine the branch control signal from the control unit and the Zero output from the ALU.