tests/arch/ecp5/dffs.v


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module dff
    ( input d, clk, output reg q );
	always @( posedge clk )
            q <= d;
endmodule

module dffe
    ( input d, clk, en, output reg q );
    initial begin
      q = 0;
    end
	always @( posedge clk )
		if ( en )
			q <= d;
endmodule