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// alu src_b mux:
// Selects source for alu input b.
module alu_b_src_mux (
input [31:0] src_rd2_buf,
input [31:0] src_imm,
input [1:0] alu_b_src,
output reg [31:0] alu_b
);
`include "include/consts.vh"
always @(*) begin
case (alu_b_src)
ALU_B_SRC_RD2_BUF: alu_b = src_rd2_buf;
ALU_B_SRC_IMM: alu_b = src_imm;
ALU_B_SRC_4: alu_b = 32'h4;
default: alu_b = 32'b0;
endcase
end
endmodule
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