Subversion Repositories versatile_library

module dff_array ( d, q, clk, rst);

        parameter width = 1;

        parameter depth = 2;

        parameter reset_value = 1'b0;

        input [width-1:0] d;

        input clk, rst;

        output [width-1:0] q;

        reg  [0:depth-1] q_tmp [width-1:0];

        integer i;

        always @ (posedge clk or posedge rst)

        if (rst) begin

            for (i=0;i<depth;i=i+1)

                q_tmp[i] <= {width{reset_value}};

        end else begin

            q_tmp[0] <= d;

            for (i=1;i<depth;i=i+1)

                q_tmp[i] <= q_tmp[i-1];

        end

    assign q = q_tmp[depth-1];

endmodule

// LATCH

// For targtes not supporting LATCH use dff_sr with clk=1 and data=1

`ifdef ALTERA

module latch ( d, le, q, clk);

input d, le;

output q;

input clk;

dff_sr i0 (.aclr(), .aset(), .clock(1'b1), .data(1'b1), .q(q));

endmodule

`else

module latch ( d, le, q, clk);

input d, le;

output q;

input clk;/*

   always @ (posedge direction_set or posedge direction_clr)

     if (direction_clr)

       direction <= going_empty;

     else

       direction <= going_full;*/

endmodule

`endif