select_add_speed_test.v

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// baeckler - 03-29-2006
// speed test bench for carry select adder

module select_add_speed_test (clk,a,b,o);

parameter BLOCK_SIZE = 14;
parameter NUM_BLOCKS = 4;
parameter DAT_WIDTH = BLOCK_SIZE * NUM_BLOCKS;

parameter METHOD = 0;

input clk;
input [DAT_WIDTH-1:0] a,b;
output [DAT_WIDTH:0] o;

reg [DAT_WIDTH-1:0] ra,rb;
reg [DAT_WIDTH:0] ro;

always @(posedge clk) begin
    ra <= a;
    rb <= b;
end

generate

if (METHOD == 0) begin

  car_select_add la (.clk(clk),.a(ra),.b(rb),.o(o));
     defparam la .BLOCK_SIZE = BLOCK_SIZE;
     defparam la .NUM_BLOCKS = NUM_BLOCKS;
end
else begin
  always @(posedge clk) begin
	ro <= ra + rb;
  end	
  assign o = ro;
end
endgenerate

endmodule