1 files changed, 0 insertions, 150 deletions
diff --git a/control_lib/longfifo.v b/control_lib/longfifo.v
deleted file mode 100644
index bf3338e0b..000000000
--- a/control_lib/longfifo.v
+++ /dev/null
@@ -1,150 +0,0 @@
-
-// 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 longfifo
-  #(parameter WIDTH=32, SIZE=9)
-    (input clk, input rst,
-     input [WIDTH-1:0] datain,
-     output [WIDTH-1:0] dataout,
-     input read,
-     input write,
-     input clear,
-     output full,
-     output empty,
-     output reg [15:0] space,
-     output reg [15:0] occupied);
-
-   // 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(rst)
-       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(0),
-	  .dob(dataout));
-
-   always @(posedge clk)
-     if(rst)
-       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(rst)
-       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(rst)
-       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(rst)
-       occupied <= 0;
-     else if(clear)
-       occupied <= 0;
-     else if(read & ~write)
-       occupied <= occupied - 1;
-     else if(write & ~read)
-       occupied <= occupied + 1;
-   
-   /*
-   wire [SIZE-1:0] fullness = wr_addr - rd_addr;  // Approximate, for simulation only
-   assign occupied = {{16-SIZE{1'b0}},fullness};
-
-   wire [SIZE-1:0] free_space = rd_addr - wr_addr - 2;  // Approximate, for SERDES flow control
-   assign space = {{16-SIZE{1'b0}},free_space};
-    */  
-
-   
-endmodule // longfifo