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// alu src_a mux:
// Selects source for alu input a.
module alu_a_src_mux (
input [31:0] src_pc,
input [31:0] src_pc_buf,
input [31:0] src_rd1,
input [31:0] src_rd1_buf,
input [2:0] alu_a_src,
output reg [31:0] alu_a
);
`include "include/consts.vh"
always @(*) begin
case (alu_a_src)
ALU_A_SRC_PC: alu_a = src_pc;
ALU_A_SRC_PC_BUF: alu_a = src_pc_buf;
ALU_A_SRC_RD1: alu_a = src_rd1;
ALU_A_SRC_RD1_BUF: alu_a = src_rd1_buf;
ALU_A_SRC_0: alu_a = 32'b0;
default: alu_a = 32'b0;
endcase
end
endmodule
|
