`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company: nope
// Engineer: Jose
// 
// Create Date: 02/20/2026 09:21:52 AM
// Design Name: ID/EX register
// Module Name: id_ex
// Project Name: riscv-ac
// Target Devices: Artix 7
// Tool Versions: 2025.2
// Description: Register between ID/EX stages
// 
// Dependencies: 
// 
// Revision: 1.0
// Revision 0.01 - File Created
// Additional Comments:
// 
//////////////////////////////////////////////////////////////////////////////////


module id_ex (
    input clk, rst, clr, 

    // señales de la UC y ALU
    input we_reg_in, we_mem_in, mem_to_reg_in, alu_src_in, branch_in, jump_in,
    input [3:0] alu_op_in,
    
    output reg we_reg_out, we_mem_out, mem_to_reg_out, alu_src_out, branch_out, jump_out,
    output reg [3:0] alu_op_out,

    // PC4, A, B, C, Rd
    input [31:0] pc4_in, regA_in, regB_in, regC_in,
    input [4:0] rs1_in, rs2_in, rd_in,
    
    output reg [31:0] pc4_out, regA_out, regB_out, regC_out,
    output reg [4:0] rs1_out, rs2_out, rd_out
);

    always @(posedge clk or posedge rst) begin
        if (rst || clr) begin
            we_reg_out <= 0; we_mem_out <= 0; mem_to_reg_out <= 0;
            alu_src_out <= 0; branch_out <= 0; jump_out <= 0; alu_op_out <= 4'b0;
            pc4_out <= 0; regA_out <= 0; regB_out <= 0; regC_out <= 0;
            rs1_out <= 0; rs2_out <= 0; rd_out <= 0;
        end 
        else begin
            we_reg_out <= we_reg_in; we_mem_out <= we_mem_in; 
            mem_to_reg_out <= mem_to_reg_in; alu_src_out <= alu_src_in;
            branch_out <= branch_in; jump_out <= jump_in; alu_op_out <= alu_op_in;
            pc4_out <= pc4_in; 
            regA_out <= regA_in; regB_out <= regB_in; regC_out <= regC_in;
            rs1_out <= rs1_in; rs2_out <= rs2_in; rd_out <= rd_in;
        end
    end
endmodule