Subversion Repositories mips_enhanced

/******************************************************************

 *                                                                *

 *    Author: Liwei                                               *

 *                                                                *

 *    This file is part of the "mips789" project.                 *

 *    Downloaded from:                                            *

 *    http://www.opencores.org/pdownloads.cgi/list/mips789        *

 *                                                                *

 *    If you encountered any problem, please contact me via       *

 *    Email:mcupro@opencores.org  or mcupro@163.com               *

 *                                                                *

 ******************************************************************/

`include "mips789_defs.v"

module rf_stage (

        clk,rst_i,cmp_ctl_i,

        ext_ctl_i,fw_alu_i,fw_cmp_rs,fw_cmp_rt,

        fw_mem_i,id_cmd,ins_i,pc_gen_ctl,

        pc_i,rd_sel_i,wb_din_i,zz_spc_i,iack_o,

        id2ra_ctl_clr_o,id2ra_ctl_cls_o,ra2ex_ctl_clr_o,ext_o,

        pc_next,rd_index_o,rs_n_o,rs_o,rt_n_o,rt_o,qa,qb,rdaddra1,rdaddrb1,branch,hold

    ) ;

    input clk;

    wire clk;

    input rst_i;

    wire rst_i;

    input [2:0] cmp_ctl_i;

    wire [2:0] cmp_ctl_i;

    input [2:0] ext_ctl_i;

    wire [2:0] ext_ctl_i;

    input [31:0] fw_alu_i;

    wire [31:0] fw_alu_i;

    input [2:0] fw_cmp_rs;

    wire [2:0] fw_cmp_rs;

    input [2:0] fw_cmp_rt;

    wire [2:0] fw_cmp_rt;

    input [31:0] fw_mem_i;

    wire [31:0] fw_mem_i;

    input [2:0] id_cmd;

    wire [2:0] id_cmd;

    input [31:0] ins_i;

    wire [31:0] ins_i;

    input [2:0] pc_gen_ctl;

    wire [2:0] pc_gen_ctl;

    input [31:0] pc_i;

    wire [31:0] pc_i;

    input [1:0] rd_sel_i;

    wire [1:0] rd_sel_i;

    input [31:0] wb_din_i;

    wire [31:0] wb_din_i;

    input [31:0] zz_spc_i;

    wire [31:0] zz_spc_i;

         input [31:0] qa;

         wire [31:0] qa;

         input [31:0] qb;

         wire [31:0] qb;

    output iack_o;

    wire iack_o;

    output id2ra_ctl_clr_o;

    wire id2ra_ctl_clr_o;

    output id2ra_ctl_cls_o;

    wire id2ra_ctl_cls_o;

    output ra2ex_ctl_clr_o;

    wire ra2ex_ctl_clr_o;

    output [31:0] ext_o;

    wire [31:0] ext_o;

    output [31:0] pc_next;

    wire [31:0] pc_next;

    output [4:0] rd_index_o;

    wire [4:0] rd_index_o;

    output [4:0] rs_n_o;

    wire [4:0] rs_n_o;

    output [31:0] rs_o;

    wire [31:0] rs_o;

    output [4:0] rt_n_o;

    wire [4:0] rt_n_o;

    output [31:0] rt_o;

    wire [31:0] rt_o;

         output [4:0] rdaddra1;

         wire [4:0] rdaddra1;

         output [4:0] rdaddrb1;

         wire [4:0] rdaddrb1;

         output branch;

         wire branch;

         input hold;

         wire hold;

    wire NET6609;

    wire NET6658;

    wire NET7774;

    wire NET904;

    wire [3:0] BUS1013;

    wire [31:0] BUS2085;

    wire [4:0] BUS3236;

    wire [4:0] BUS3237;

    wire [4:0] BUS5421;

    wire [31:0] BUS6061;

    wire [31:0] BUS6095;

    wire [100:0] CLK_NO;

    wire [100:0] INS_NO;

    cal_cpi CAL_CPI

            (

                .clk(clk),

                .clk_no(CLK_NO),

                .ins_no(INS_NO),

                .is_nop(NET7774),

                .rst(rst_i)

            );

    ctl_FSM MAIN_FSM

            (

                .clk(clk),

                .hold(hold),

                .iack(iack_o),

                .id2ra_ctl_clr(id2ra_ctl_clr_o),

                .id2ra_ctl_cls(id2ra_ctl_cls_o),

                .id2ra_ins_clr(NET6609),

                .id2ra_ins_cls(NET6658),

                .id_cmd(id_cmd),

                .pc_prectl(BUS1013),

                .ra2exec_ctl_clr(ra2ex_ctl_clr_o),

                .rst(rst_i),

                .zz_is_nop(NET7774)

            );

    pc_gen i_pc_gen

           (

               .check(NET904),

               .clk(clk),

               .hold(hold),

               .ctl(pc_gen_ctl),

               .imm(ext_o),

               .pc(pc_i),

                                        .branch(branch),

               .pc_next(pc_next),

               .pc_prectl(BUS1013),

               .s(rs_o),

               .zz_spc(zz_spc_i)

           );

    compare i_cmp

            (

                .ctl(cmp_ctl_i),

                .res(NET904),

                .s(rs_o),

                .t(rt_o)

            );

    ext i_ext

        (

            .ctl(ext_ctl_i),

            .ins_i(BUS2085),

            .res(ext_o)

        );

    r32_reg_clr_cls ins_reg

                    (

                        .clk(clk),

                        .clr(NET6609),

                        .cls(NET6658),

                        .r32_i(ins_i),

                        .r32_o(BUS2085),

                                                                .hold(hold)

                    );

    jack jack1

         (

             .ins_i(BUS2085),

             .rd_o(BUS5421),

             .rs_o(rs_n_o),

             .rt_o(rt_n_o)

         );

    jack jack2

         (

             .ins_i(ins_i),

             .rs_o(rdaddra1),

             .rt_o(rdaddrb1)

         );

    rd_sel rd_sel

           (

               .ctl(rd_sel_i),

               .rd_i(BUS5421),

               .rd_o(rd_index_o),

               .rt_i(rt_n_o)

           );/*

    wire bank_sel;

    dly3clk bank_sel_dly

            (

                .r1_i(iack_o),

                .r1_o(bank_sel),

                .clk(clk),

                .rst(rst_i)

            );*/

/*    reg_array reg_bank

              (

                  .clock(clk),

                  .data(wb_din_i),

                  .qa(BUS6061),

                  .qb(BUS6095),

                  .rd_clk_cls(NET6658),

                  .rdaddress_a(BUS3237),

                  .rdaddress_b(BUS3236),

                  .wraddress(wb_addr_i),

                  .wren(wb_we_i)/*,

                  .bank_sel(1'b0)*/

 //             );

    fwd_mux rf_fwd_rt

            (

                .din(qb),

                .dout(rt_o),

                .fw_alu(fw_alu_i),

                .fw_ctl(fw_cmp_rt),

                .fw_dmem(fw_mem_i)

            );

    fwd_mux rs_fwd_rs

            (

                .din(qa),

                .dout(rs_o),

                .fw_alu(fw_alu_i),

                .fw_ctl(fw_cmp_rs),

                .fw_dmem(fw_mem_i)

            );

endmodule