1 files changed, 0 insertions, 102 deletions
diff --git a/fpga/usrp3/lib/axi/axi_fast_fifo.v b/fpga/usrp3/lib/axi/axi_fast_fifo.v
deleted file mode 100644
index a24db3cc8..000000000
--- a/fpga/usrp3/lib/axi/axi_fast_fifo.v
+++ /dev/null
@@ -1,102 +0,0 @@
-//
-// Ultra fast critical path FIFO.
-// Only 2 entrys but no combinatorial feed through paths
-//
-
-
-module axi_fast_fifo
-  #(parameter WIDTH=64)
-  (
-   input clk,
-   input reset,
-   input clear,
-   //
-   input [WIDTH-1:0] i_tdata,
-   input i_tvalid,
-   output reg i_tready,
-   //
-   output [WIDTH-1:0] o_tdata,
-   output reg o_tvalid,
-   input  o_tready
-   );
-
-   reg [WIDTH-1:0] data_reg1, data_reg2;
-
-   reg [1:0] 	   state;
-   
-   localparam EMPTY = 0;
-   localparam HALF = 1;
-   localparam FULL = 2;
-   
-   always @(posedge clk) 
-     if (reset | clear) begin
-	state <= EMPTY;
-	data_reg1 <= 0;
-	data_reg2 <= 0;
-	o_tvalid <= 1'b0;
-	i_tready <= 1'b0;
-	
-     end else begin
-	case (state)
-	  // Nothing in either register.
-	  // Upstream can always push data to us.
-	  // Downstream has nothing to take from us.
-	  EMPTY: begin
-	     if (i_tvalid) begin
-		data_reg1 <= i_tdata;
-		state <= HALF;
-		i_tready <= 1'b1;
-		o_tvalid <= 1'b1;
-	     end else begin
-		state <= EMPTY;
-		i_tready <= 1'b1;
-		o_tvalid <= 1'b0;
-	     end
-	  end
-	  // First Register Full.
-	  // Upstream can always push data to us.
-	  // Downstream can always read from us.
-	  HALF: begin
-	     if (i_tvalid && o_tready) begin
-		data_reg1 <= i_tdata;
-		state <= HALF;
-		i_tready <= 1'b1;
-		o_tvalid <= 1'b1;
-	     end else if (i_tvalid) begin
-		data_reg1 <= i_tdata;
-		data_reg2 <= data_reg1;
-		state <= FULL;
-		i_tready <= 1'b0;
-		o_tvalid <= 1'b1;
-	     end else if (o_tready) begin
-		state <= EMPTY;
-		i_tready <= 1'b1;
-		o_tvalid <= 1'b0;
-	     end else begin
-		state <= HALF;
-		i_tready <= 1'b1;
-		o_tvalid <= 1'b1;
-	     end
-	  end // case: HALF
-	  // Both Registers Full.
-	  // Upstream can not push to us in this state.
-	  // Downstream can always read from us.
-	  FULL: begin
-	     if (o_tready) begin
-		state <= HALF;
-		i_tready <= 1'b1;
-		o_tvalid <= 1'b1;
-	     end
-	     else begin
-		state <= FULL;
-		i_tready <= 1'b0;
-		o_tvalid <= 1'b1;
-	     end
-	  end
-	endcase // case(state)
-     end // else: !if(reset | clear)
-
-   assign o_tdata = (state == FULL) ? data_reg2 : data_reg1;
-   
-
-endmodule // axi_fast_fifo