Removed copy of FPGA source files.

1 files changed, 0 insertions, 165 deletions

diff --git a/fpga/usrp2/fifo/fifo_long.v b/fpga/usrp2/fifo/fifo_long.v
deleted file mode 100644
index c4f0a1cc2..000000000
--- a/fpga/usrp2/fifo/fifo_long.v
+++ /dev/null
@@ -1,165 +0,0 @@
-//
-// Copyright 2011 Ettus Research LLC
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-//
-
-
-// FIFO intended to be interchangeable with shortfifo, but
-//  based on block ram instead of SRL16's
-//  only one clock domain
-
-// Port A is write port, Port B is read port
-
-module fifo_long
-  #(parameter WIDTH=32, SIZE=9)
-   (input clk, input reset, input clear,
-    input [WIDTH-1:0] datain,
-    input src_rdy_i,
-    output dst_rdy_o,
-    output [WIDTH-1:0] dataout,
-    output src_rdy_o,
-    input dst_rdy_i,
-    
-    output reg [15:0] space,
-    output reg [15:0] occupied);
-   
-   wire write 	     = src_rdy_i & dst_rdy_o;
-   wire read 	     = dst_rdy_i & src_rdy_o;
-   wire full, empty;
-   
-   assign dst_rdy_o  = ~full;
-   assign src_rdy_o  = ~empty;
-   
-   // Read side states
-   localparam 	  EMPTY = 0;
-   localparam 	  PRE_READ = 1;
-   localparam 	  READING = 2;
-
-   reg [SIZE-1:0] wr_addr, rd_addr;
-   reg [1:0] 	  read_state;
-
-   reg 	  empty_reg, full_reg;
-   always @(posedge clk)
-     if(reset)
-       wr_addr <= 0;
-     else if(clear)
-       wr_addr <= 0;
-     else if(write)
-       wr_addr <= wr_addr + 1;
-
-   ram_2port #(.DWIDTH(WIDTH),.AWIDTH(SIZE))
-     ram (.clka(clk),
-	  .ena(1'b1),
-	  .wea(write),
-	  .addra(wr_addr),
-	  .dia(datain),
-	  .doa(),
-
-	  .clkb(clk),
-	  .enb((read_state==PRE_READ)|read),
-	  .web(0),
-	  .addrb(rd_addr),
-	  .dib({WIDTH{1'b1}}),
-	  .dob(dataout));
-
-   always @(posedge clk)
-     if(reset)
-       begin
-	  read_state <= EMPTY;
-	  rd_addr <= 0;
-	  empty_reg <= 1;
-       end
-     else
-       if(clear)
-	 begin
-	    read_state <= EMPTY;
-	    rd_addr <= 0;
-	    empty_reg <= 1;
-	 end
-       else 
-	 case(read_state)
-	   EMPTY :
-	     if(write)
-	       begin
-		  //rd_addr <= wr_addr;
-		  read_state <= PRE_READ;
-	       end
-	   PRE_READ :
-	     begin
-		read_state <= READING;
-		empty_reg <= 0;
-		rd_addr <= rd_addr + 1;
-	     end
-	   
-	   READING :
-	     if(read)
-	       if(rd_addr == wr_addr)
-		 begin
-		    empty_reg <= 1;
-		    if(write)
-		      read_state <= PRE_READ;
-		    else
-		      read_state <= EMPTY;
-		 end
-	       else
-		 rd_addr <= rd_addr + 1;
-	 endcase // case(read_state)
-
-   wire [SIZE-1:0] dont_write_past_me = rd_addr - 3;
-   wire 	   becoming_full = wr_addr == dont_write_past_me;
-     
-   always @(posedge clk)
-     if(reset)
-       full_reg <= 0;
-     else if(clear)
-       full_reg <= 0;
-     else if(read & ~write)
-       full_reg <= 0;
-     //else if(write & ~read & (wr_addr == (rd_addr-3)))
-     else if(write & ~read & becoming_full)
-       full_reg <= 1;
-
-   //assign empty = (read_state != READING);
-   assign empty = empty_reg;
-
-   // assign full = ((rd_addr - 1) == wr_addr);
-   assign full = full_reg;
-
-   //////////////////////////////////////////////
-   // space and occupied are for diagnostics only
-   // not guaranteed exact
-
-   localparam NUMLINES = (1<<SIZE)-2;
-   always @(posedge clk)
-     if(reset)
-       space <= NUMLINES;
-     else if(clear)
-       space <= NUMLINES;
-     else if(read & ~write)
-       space <= space + 1;
-     else if(write & ~read)
-       space <= space - 1;
-   
-   always @(posedge clk)
-     if(reset)
-       occupied <= 0;
-     else if(clear)
-       occupied <= 0;
-     else if(read & ~write)
-       occupied <= occupied - 1;
-     else if(write & ~read)
-       occupied <= occupied + 1;
-   
-endmodule // fifo_long