Subversion Repositories versatile_fifo

module vfifo_dual_port_ram_dc_dw

  (

   d_a,

   q_a,

   adr_a,

   we_a,

   clk_a,

   q_b,

   adr_b,

   d_b,

   we_b,

   clk_b

   );

   parameter DATA_WIDTH = `DATA_WIDTH;

   parameter ADDR_WIDTH = `ADDR_WIDTH;

   input [(DATA_WIDTH-1):0]      d_a;

   input [(ADDR_WIDTH-1):0]       adr_a;

   input [(ADDR_WIDTH-1):0]       adr_b;

   input                         we_a;

   output [(DATA_WIDTH-1):0]      q_b;

   input [(DATA_WIDTH-1):0]       d_b;

   output reg [(DATA_WIDTH-1):0] q_a;

   input                         we_b;

   input                         clk_a, clk_b;

   reg [(DATA_WIDTH-1):0]         q_b;

   reg [DATA_WIDTH-1:0] ram [(1<<ADDR_WIDTH)-1:0] ;

   always @ (posedge clk_a)

     begin

        q_a <= ram[adr_a];

        if (we_a)

             ram[adr_a] <= d_a;

     end

   always @ (posedge clk_b)

     begin

          q_b <= ram[adr_b];

        if (we_b)

          ram[adr_b] <= d_b;

     end

endmodule