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/*

--------------------------------------------------------------------------------

Module : ep4ce6e22c8_demo_board.v

--------------------------------------------------------------------------------

Function:

- Processor core with PLL & LED outputs.

Instantiates:

- hive_core.v

- pll.v

Notes:

--------------------------------------------------------------------------------

*/

module ep4ce6e22c8_demo_board

        #(

        parameter       integer                                                 LED_W                   = 4

        )

        (

        // clocks & resets

        input                   wire                                                            clk_50m_i,                                      // clock

        input                   wire                                                            rstn_i,                                         // async. reset, active low

        //

        output          wire    [LED_W-1:0]                              led_o                                                   // LEDs, active low

        );

        /*

        ----------------------

        -- internal signals --

        ----------------------

        */

        wire                                    [31:0]                                   io_o;

        wire                                                                                            clk_pll;

        /*

        ================

        == code start ==

        ================

        */

        pll     pll_inst (

        .inclk0                         ( clk_50m_i ),

        .c0                                     ( clk_pll )

        );

        hive_core hive_core_inst

        (

        .clk_i                          ( clk_pll ),

        .rst_i                          ( ~rstn_i ),

        .intr_req_i                     (  ),  // unused

        .io_i                                   (  ),  // unused

        .io_o                                   ( io_o )

        );

        // the LEDs are active low

        assign led_o = ~io_o[3:0];

endmodule