Subversion Repositories versatile_library

// WB ROM

module wb_boot_rom (

    wb_adr_i, wb_stb_i, wb_cyc_i,

    wb_dat_o, wb_ack_o, wb_clk, wb_rst);

//E2_ifndef BOOT_ROM

//E2_define BOOT_ROM "boot_rom.v"

//E2_endif

    parameter addr_width = 5;

   input [(addr_width+2)-1:2]       wb_adr_i;

   input                            wb_stb_i;

   input                            wb_cyc_i;

   output reg [31:0]                 wb_dat_o;

   output reg                       wb_ack_o;

   input                            wb_clk;

   input                            wb_rst;

always @ (posedge wb_clk or posedge wb_rst)

    if (wb_rst)

        wb_dat_o <= 32'h15000000;

    else

         case (wb_adr_i)

//E2_include `BOOT_ROM

           /*

            // Zero r0 and jump to 0x00000100

            0 : wb_dat_o <= 32'h18000000;

            1 : wb_dat_o <= 32'hA8200000;

            2 : wb_dat_o <= 32'hA8C00100;

            3 : wb_dat_o <= 32'h44003000;

            4 : wb_dat_o <= 32'h15000000;

            */

           default:

             wb_dat_o <= 32'h00000000;

         endcase // case (wb_adr_i)

always @ (posedge wb_clk or posedge wb_rst)

    if (wb_rst)

        wb_ack_o <= 1'b0;

    else

        wb_ack_o <= wb_stb_i & wb_cyc_i & !wb_ack_o;

endmodule