Merge branch 'ise12_exp' into u1e

* ise12_exp:
  zero out debug pins.  helps timing a little bit.
  non-udp uses a different address for the tx dsp core
  manual merge to use localparams from udp version
  from UDP branch, changed names because I want these separate from the non-udp versions
  ignore output files
  new files from udp branch added to main Makefile
  change the debug pins, which makes it more reliable.  This is unnerving.
  experimental mods to make ram loader fully synchronous.  Based on IJB's work
  fixes from IJB from 5/24.  Basically connect unconnected wires.
  removes the icache and pipelines the reads

4 files changed, 1218 insertions, 160 deletions

diff --git a/usrp2/top/u2_core/u2_core.v b/usrp2/top/u2_core/u2_core.v
index 428a40ad2..ad15eef67 100644..100755
--- a/usrp2/top/u2_core/u2_core.v
+++ b/usrp2/top/u2_core/u2_core.v
@@ -142,7 +142,7 @@ module u2_core
    localparam SR_RX_CTRL  = 176;  // 16
    localparam SR_TIME64   = 192;  //  3
    localparam SR_SIMTIMER = 198;  //  2
-   localparam SR_TX_DSP   = 208;  // 16
+   localparam SR_TX_DSP   = 128;  // 16
    localparam SR_TX_CTRL  = 224;  // 16
 
    // FIFO Sizes, 9 = 512 lines, 10 = 1024, 11 = 2048
@@ -162,14 +162,13 @@ module u2_core
    wire 	ram_loader_rst, wb_rst, dsp_rst;
 
    wire [31:0] 	status, status_b0, status_b1, status_b2, status_b3, status_b4, status_b5, status_b6, status_b7;
-   wire 	bus_error, spi_int, i2c_int, pps_int, onetime_int, periodic_int, buffer_int;
-   wire 	proc_int, overrun, underrun, uart_tx_int, uart_rx_int;
+   wire 	bus_error, spi_int, i2c_int, pps_int, timer_int, buffer_int, proc_int, overrun, underrun, uart_tx_int, uart_rx_int;
 
    wire [31:0] 	debug_gpio_0, debug_gpio_1;
    wire [31:0] 	atr_lines;
 
-   wire [31:0] 	debug_rx, debug_mac, debug_mac0, debug_mac1, debug_tx_dsp, debug_txc,
-		debug_serdes0, debug_serdes1, debug_serdes2, debug_rx_dsp, debug_udp;
+   wire [31:0] 	debug_rx, debug_mac, debug_mac0, debug_mac1, debug_tx_dsp, debug_txc, 
+		debug_serdes0, debug_serdes1, debug_serdes2, debug_rx_dsp;
 
    wire [15:0] 	ser_rx_occ, ser_tx_occ, dsp_rx_occ, dsp_tx_occ, eth_rx_occ, eth_tx_occ, eth_rx_occ2;
    wire 	ser_rx_full, ser_tx_full, dsp_rx_full, dsp_tx_full, eth_rx_full, eth_tx_full, eth_rx_full2;
@@ -178,7 +177,6 @@ module u2_core
    wire 	serdes_link_up;
    wire 	epoch;
    wire [31:0] 	irq;
-   wire [63:0] 	vita_time;
    
    // ///////////////////////////////////////////////////////////////////////////////////////////////
    // Wishbone Single Master INTERCON
@@ -279,33 +277,33 @@ module u2_core
    // ///////////////////////////////////////////////////////////////////
    // RAM Loader
 
-   wire [31:0] 	 ram_loader_dat, iwb_dat;
-   wire [15:0] 	 ram_loader_adr, iwb_adr;
+   wire [31:0] 	 ram_loader_dat, if_dat;
+   wire [15:0] 	 ram_loader_adr;
+   wire [14:0] 	 if_adr;
    wire [3:0] 	 ram_loader_sel;
-   wire 	 ram_loader_stb, ram_loader_we, ram_loader_ack;
+   wire 	 ram_loader_stb, ram_loader_we;
    wire 	 iwb_ack, iwb_stb;
    ram_loader #(.AWIDTH(16),.RAM_SIZE(RAM_SIZE))
-     ram_loader (.clk_i(wb_clk),.rst_i(ram_loader_rst),
+     ram_loader (.wb_clk(wb_clk),.dsp_clk(dsp_clk),.ram_loader_rst(ram_loader_rst),
+		 .wb_dat(ram_loader_dat),.wb_adr(ram_loader_adr),
+		 .wb_stb(ram_loader_stb),.wb_sel(ram_loader_sel),
+		 .wb_we(ram_loader_we),
+		 .ram_loader_done(ram_loader_done),
 		 // CPLD Interface
-		 .cfg_clk_i(cpld_clk),
-		 .cfg_data_i(cpld_din),
-		 .start_o(cpld_start_int),
-		 .mode_o(cpld_mode_int),
-		 .done_o(cpld_done_int),
-		 .detached_i(cpld_detached),
-		 // Wishbone Interface
-		 .wb_dat_o(ram_loader_dat),.wb_adr_o(ram_loader_adr),
-		 .wb_stb_o(ram_loader_stb),.wb_cyc_o(),.wb_sel_o(ram_loader_sel),
-		 .wb_we_o(ram_loader_we),.wb_ack_i(ram_loader_ack),
-		 .ram_loader_done_o(ram_loader_done));
-
+		 .cpld_clk(cpld_clk),
+		 .cpld_din(cpld_din),
+		 .cpld_start(cpld_start_int),
+		 .cpld_mode(cpld_mode_int),
+		 .cpld_done(cpld_done_int),
+		 .cpld_detached(cpld_detached));
+   
    // /////////////////////////////////////////////////////////////////////////
    // Processor
    aeMB_core_BE #(.ISIZ(16),.DSIZ(16),.MUL(0),.BSF(1))
      aeMB (.sys_clk_i(wb_clk), .sys_rst_i(wb_rst),
 	   // Instruction Wishbone bus to I-RAM
-	   .iwb_stb_o(iwb_stb),.iwb_adr_o(iwb_adr),
-	   .iwb_dat_i(iwb_dat),.iwb_ack_i(iwb_ack),
+	   .if_adr(if_adr),
+	   .if_dat(if_dat),
 	   // Data Wishbone bus to system bus fabric
 	   .dwb_we_o(m0_we),.dwb_stb_o(m0_stb),.dwb_dat_o(m0_dat_i),.dwb_adr_o(m0_adr),
 	   .dwb_dat_i(m0_dat_o),.dwb_ack_i(m0_ack),.dwb_sel_o(m0_sel),.dwb_cyc_o(m0_cyc),
@@ -319,16 +317,16 @@ module u2_core
    // I-port connects directly to processor and ram loader
 
    wire 	 flush_icache;
-   ram_harv_cache #(.AWIDTH(15),.RAM_SIZE(RAM_SIZE),.ICWIDTH(7),.DCWIDTH(6))
+   ram_harvard #(.AWIDTH(15),.RAM_SIZE(RAM_SIZE),.ICWIDTH(7),.DCWIDTH(6))
      sys_ram(.wb_clk_i(wb_clk),.wb_rst_i(wb_rst),
 	     
 	     .ram_loader_adr_i(ram_loader_adr[14:0]), .ram_loader_dat_i(ram_loader_dat),
 	     .ram_loader_stb_i(ram_loader_stb), .ram_loader_sel_i(ram_loader_sel),
-	     .ram_loader_we_i(ram_loader_we), .ram_loader_ack_o(ram_loader_ack),
+	     .ram_loader_we_i(ram_loader_we),
 	     .ram_loader_done_i(ram_loader_done),
 	     
-	     .iwb_adr_i(iwb_adr[14:0]), .iwb_stb_i(iwb_stb),
-	     .iwb_dat_o(iwb_dat), .iwb_ack_o(iwb_ack),
+	     .if_adr(if_adr), 
+	     .if_data(if_dat), 
 	     
 	     .dwb_adr_i(s0_adr[14:0]), .dwb_dat_i(s0_dat_o), .dwb_dat_o(s0_dat_i),
 	     .dwb_we_i(s0_we), .dwb_ack_o(s0_ack), .dwb_stb_i(s0_stb), .dwb_sel_i(s0_sel),
@@ -425,51 +423,26 @@ module u2_core
       
       .word00(status_b0),.word01(status_b1),.word02(status_b2),.word03(status_b3),
       .word04(status_b4),.word05(status_b5),.word06(status_b6),.word07(status_b7),
-      .word08(status),.word09({sim_mode,27'b0,clock_divider[3:0]}),.word10(vita_time[63:32]),
-      .word11(vita_time[31:0]),.word12(32'b0),.word13(irq),.word14(status_enc),.word15(cycle_count)
+      .word08(status),.word09({sim_mode,27'b0,clock_divider[3:0]}),.word10(32'b0),
+      .word11(32'b0),.word12(32'b0),.word13(irq),.word14(status_enc),.word15(cycle_count)
       );
 
    // /////////////////////////////////////////////////////////////////////////
    // Ethernet MAC  Slave #6
 
-   wire [18:0] 	 rx_f19_data, tx_f19_data;
-   wire 	 rx_f19_src_rdy, rx_f19_dst_rdy, rx_f36_src_rdy, rx_f36_dst_rdy;
-   
-   simple_gemac_wrapper19 #(.RXFIFOSIZE(11), .TXFIFOSIZE(6)) simple_gemac_wrapper19
+   simple_gemac_wrapper #(.RXFIFOSIZE(11), .TXFIFOSIZE(6)) simple_gemac_wrapper
      (.clk125(clk_to_mac),  .reset(wb_rst),
       .GMII_GTX_CLK(GMII_GTX_CLK), .GMII_TX_EN(GMII_TX_EN),  
       .GMII_TX_ER(GMII_TX_ER), .GMII_TXD(GMII_TXD),
       .GMII_RX_CLK(GMII_RX_CLK), .GMII_RX_DV(GMII_RX_DV),  
       .GMII_RX_ER(GMII_RX_ER), .GMII_RXD(GMII_RXD),
       .sys_clk(dsp_clk),
-      .rx_f19_data(rx_f19_data), .rx_f19_src_rdy(rx_f19_src_rdy), .rx_f19_dst_rdy(rx_f19_dst_rdy),
-      .tx_f19_data(tx_f19_data), .tx_f19_src_rdy(tx_f19_src_rdy), .tx_f19_dst_rdy(tx_f19_dst_rdy),
+      .rx_f36_data({wr2_flags,wr2_dat}), .rx_f36_src_rdy(wr2_ready_i), .rx_f36_dst_rdy(wr2_ready_o),
+      .tx_f36_data({rd2_flags,rd2_dat}), .tx_f36_src_rdy(rd2_ready_o), .tx_f36_dst_rdy(rd2_ready_i),
       .wb_clk(wb_clk), .wb_rst(wb_rst), .wb_stb(s6_stb), .wb_cyc(s6_cyc), .wb_ack(s6_ack),
       .wb_we(s6_we), .wb_adr(s6_adr), .wb_dat_i(s6_dat_o), .wb_dat_o(s6_dat_i),
       .mdio(MDIO), .mdc(MDC),
       .debug(debug_mac));
-
-   wire [35:0] 	 udp_tx_data, udp_rx_data;
-   wire 	 udp_tx_src_rdy, udp_tx_dst_rdy, udp_rx_src_rdy, udp_rx_dst_rdy;
-   
-   udp_wrapper #(.BASE(SR_UDP_SM)) udp_wrapper
-     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
-      .set_stb(set_stb_dsp), .set_addr(set_addr_dsp), .set_data(set_data_dsp),
-      .rx_f19_data(rx_f19_data), .rx_f19_src_rdy_i(rx_f19_src_rdy), .rx_f19_dst_rdy_o(rx_f19_dst_rdy),
-      .tx_f19_data(tx_f19_data), .tx_f19_src_rdy_o(tx_f19_src_rdy), .tx_f19_dst_rdy_i(tx_f19_dst_rdy),
-      .rx_f36_data(udp_rx_data), .rx_f36_src_rdy_o(udp_rx_src_rdy), .rx_f36_dst_rdy_i(udp_rx_dst_rdy),
-      .tx_f36_data(udp_tx_data), .tx_f36_src_rdy_i(udp_tx_src_rdy), .tx_f36_dst_rdy_o(udp_tx_dst_rdy),
-      .debug(debug_udp) );
-
-   fifo_cascade #(.WIDTH(36), .SIZE(ETH_TX_FIFOSIZE)) tx_eth_fifo
-     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
-      .datain({rd2_flags,rd2_dat}), .src_rdy_i(rd2_ready_o), .dst_rdy_o(rd2_ready_i),
-      .dataout(udp_tx_data), .src_rdy_o(udp_tx_src_rdy), .dst_rdy_i(udp_tx_dst_rdy));
-
-   fifo_cascade #(.WIDTH(36), .SIZE(ETH_RX_FIFOSIZE)) rx_eth_fifo
-     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
-      .datain(udp_rx_data), .src_rdy_i(udp_rx_src_rdy), .dst_rdy_o(udp_rx_dst_rdy),
-      .dataout({wr2_flags,wr2_dat}), .src_rdy_o(wr2_ready_i), .dst_rdy_i(wr2_ready_o));
    
    // /////////////////////////////////////////////////////////////////////////
    // Settings Bus -- Slave #7
@@ -523,8 +496,8 @@ module u2_core
 
    assign irq= {{8'b0},
 		{8'b0},
-		{3'b0, periodic_int, clk_status, serdes_link_up, uart_tx_int, uart_rx_int},
-		{pps_int,overrun,underrun,PHY_INTn,i2c_int,spi_int,onetime_int,buffer_int}};
+		{4'b0, clk_status, serdes_link_up, uart_tx_int, uart_rx_int},
+		{pps_int,overrun,underrun,PHY_INTn,i2c_int,spi_int,timer_int,buffer_int}};
    
    pic pic(.clk_i(wb_clk),.rst_i(wb_rst),.cyc_i(s8_cyc),.stb_i(s8_stb),.adr_i(s8_adr[4:2]),
 	   .we_i(s8_we),.dat_i(s8_dat_o),.dat_o(s8_dat_i),.ack_o(s8_ack),.int_o(proc_int),
@@ -533,25 +506,13 @@ module u2_core
    // /////////////////////////////////////////////////////////////////////////
    // Master Timer, Slave #9
 
-   // No longer used, replaced with simple_timer below
-   /*
    wire [31:0] 	 master_time;
    timer timer
      (.wb_clk_i(wb_clk),.rst_i(wb_rst),
       .cyc_i(s9_cyc),.stb_i(s9_stb),.adr_i(s9_adr[4:2]),
       .we_i(s9_we),.dat_i(s9_dat_o),.dat_o(s9_dat_i),.ack_o(s9_ack),
       .sys_clk_i(dsp_clk),.master_time_i(master_time),.int_o(timer_int) );
-    */
-   assign s9_ack = 0;
-   
-   // /////////////////////////////////////////////////////////////////////////
-   //  Simple Timer interrupts
-   
-   simple_timer #(.BASE(SR_SIMTIMER)) simple_timer
-     (.clk(wb_clk), .reset(wb_rst),
-      .set_stb(set_stb), .set_addr(set_addr), .set_data(set_data),
-      .onetime_int(onetime_int), .periodic_int(periodic_int));
-   
+
    // /////////////////////////////////////////////////////////////////////////
    // UART, Slave #10
 
@@ -579,9 +540,22 @@ module u2_core
    // //////////////////////////////////////////////////////////////////////////
    // Time Sync, Slave #12 
 
-   // No longer used, see time_64bit.  Still need to handle mimo time, though
-   assign sc_ack = 0;
+   reg 		 pps_posedge, pps_negedge, pps_pos_d1, pps_neg_d1;
+   always @(negedge dsp_clk) pps_negedge <= pps_in;
+   always @(posedge dsp_clk) pps_posedge <= pps_in;
+   always @(posedge dsp_clk) pps_pos_d1 <= pps_posedge;
+   always @(posedge dsp_clk) pps_neg_d1 <= pps_negedge;   
    
+   wire 	 pps_o;
+   time_sync time_sync
+     (.wb_clk_i(wb_clk),.rst_i(wb_rst),
+      .cyc_i(sc_cyc),.stb_i(sc_stb),.adr_i(sc_adr[4:2]),
+      .we_i(sc_we),.dat_i(sc_dat_o),.dat_o(sc_dat_i),.ack_o(sc_ack),
+      .sys_clk_i(dsp_clk),.master_time_o(master_time),
+      .pps_posedge(pps_posedge),.pps_negedge(pps_negedge),
+      .exp_pps_in(exp_pps_in),.exp_pps_out(exp_pps_out),
+      .int_o(pps_int),.epoch_o(epoch),.pps_o(pps_o) );
+
    // /////////////////////////////////////////////////////////////////////////
    // SD Card Reader / Writer, Slave #13
 
@@ -595,75 +569,35 @@ module u2_core
    assign sd_dat_i[31:8] = 0;
 
    // /////////////////////////////////////////////////////////////////////////
-   // DSP RX
+   // DSP
    wire [31:0] 	 sample_rx, sample_tx;
    wire 	 strobe_rx, strobe_tx;
-   wire 	 rx_dst_rdy, rx_src_rdy, rx1_dst_rdy, rx1_src_rdy;
-   wire [99:0] 	 rx_data;
-   wire [35:0] 	 rx1_data;
+
+   rx_control #(.FIFOSIZE(10)) rx_control
+     (.clk(dsp_clk), .rst(dsp_rst),
+      .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
+      .master_time(master_time),.overrun(overrun),
+      .wr_dat_o(wr1_dat), .wr_flags_o(wr1_flags), .wr_ready_o(wr1_ready_i), .wr_ready_i(wr1_ready_o),
+      .sample(sample_rx), .run(run_rx), .strobe(strobe_rx),
+      .fifo_occupied(dsp_rx_occ),.fifo_full(dsp_rx_full),.fifo_empty(dsp_rx_empty),
+      .debug_rx(debug_rx) );
    
-   dsp_core_rx #(.BASE(SR_RX_DSP)) dsp_core_rx
+   // dummy_rx dsp_core_rx
+   dsp_core_rx dsp_core_rx
      (.clk(dsp_clk),.rst(dsp_rst),
       .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
       .adc_a(adc_a),.adc_ovf_a(adc_ovf_a),.adc_b(adc_b),.adc_ovf_b(adc_ovf_b),
       .sample(sample_rx), .run(run_rx_d1), .strobe(strobe_rx),
       .debug(debug_rx_dsp) );
 
-   wire [31:0] 	 vrc_debug;
-   
-   vita_rx_control #(.BASE(SR_RX_CTRL), .WIDTH(32)) vita_rx_control
-     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
-      .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
-      .vita_time(vita_time), .overrun(overrun),
-      .sample(sample_rx), .run(run_rx), .strobe(strobe_rx),
-      .sample_fifo_o(rx_data), .sample_fifo_dst_rdy_i(rx_dst_rdy), .sample_fifo_src_rdy_o(rx_src_rdy),
-      .debug_rx(vrc_debug));
-
-   wire [3:0] 	 vita_state;
-   
-   vita_rx_framer #(.BASE(SR_RX_CTRL), .MAXCHAN(1)) vita_rx_framer
-     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
-      .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
-      .sample_fifo_i(rx_data), .sample_fifo_dst_rdy_o(rx_dst_rdy), .sample_fifo_src_rdy_i(rx_src_rdy),
-      .data_o(rx1_data), .dst_rdy_i(rx1_dst_rdy), .src_rdy_o(rx1_src_rdy),
-      .fifo_occupied(), .fifo_full(), .fifo_empty(),
-      .debug_rx(vita_state) );
-
-   fifo_cascade #(.WIDTH(36), .SIZE(DSP_RX_FIFOSIZE)) rx_fifo_cascade
-     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
-      .datain(rx1_data), .src_rdy_i(rx1_src_rdy), .dst_rdy_o(rx1_dst_rdy),
-      .dataout({wr1_flags,wr1_dat}), .src_rdy_o(wr1_ready_i), .dst_rdy_i(wr1_ready_o));
-
-   // ///////////////////////////////////////////////////////////////////////////////////
-   // DSP TX
-
-   wire [35:0] 	 tx_data;
-   wire [99:0] 	 tx1_data;
-   wire 	 tx_src_rdy, tx_dst_rdy, tx1_src_rdy, tx1_dst_rdy;
-
-   wire [31:0] 	 debug_vtc, debug_vtd, debug_vt;
-   
-   fifo_cascade #(.WIDTH(36), .SIZE(DSP_TX_FIFOSIZE)) tx_fifo_cascade
-     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
-      .datain({rd1_flags,rd1_dat}), .src_rdy_i(rd1_ready_o), .dst_rdy_o(rd1_ready_i),
-      .dataout(tx_data), .src_rdy_o(tx_src_rdy), .dst_rdy_i(tx_dst_rdy) );
-
-   vita_tx_deframer #(.BASE(SR_TX_CTRL), .MAXCHAN(1)) vita_tx_deframer
-     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
-      .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
-      .data_i(tx_data), .src_rdy_i(tx_src_rdy), .dst_rdy_o(tx_dst_rdy),
-      .sample_fifo_o(tx1_data), .sample_fifo_src_rdy_o(tx1_src_rdy), .sample_fifo_dst_rdy_i(tx1_dst_rdy),
-      .debug(debug_vtd) );
-
-   vita_tx_control #(.BASE(SR_TX_CTRL), .WIDTH(32)) vita_tx_control
-     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
+   tx_control #(.FIFOSIZE(10)) tx_control
+     (.clk(dsp_clk), .rst(dsp_rst),
       .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
-      .vita_time(vita_time),.underrun(underrun),
-      .sample_fifo_i(tx1_data), .sample_fifo_src_rdy_i(tx1_src_rdy), .sample_fifo_dst_rdy_o(tx1_dst_rdy),
+      .master_time(master_time),.underrun(underrun),
+      .rd_dat_i(rd1_dat), .rd_flags_i(rd1_flags), .rd_ready_i(rd1_ready_o), .rd_ready_o(rd1_ready_i),
       .sample(sample_tx), .run(run_tx), .strobe(strobe_tx),
-      .debug(debug_vtc) );
-   
-   assign debug_vt = debug_vtc | debug_vtd;
+      .fifo_occupied(dsp_tx_occ),.fifo_full(dsp_tx_full),.fifo_empty(dsp_tx_empty),
+      .debug(debug_txc) );
    
    dsp_core_tx #(.BASE(SR_TX_DSP)) dsp_core_tx
      (.clk(dsp_clk),.rst(dsp_rst),
@@ -720,13 +654,6 @@ module u2_core
    assign      RAM_CE1n = 0;
    assign      RAM_D[17:16] = 2'bzz;
    
-   // /////////////////////////////////////////////////////////////////////////
-   // VITA Timing
-
-   time_64bit #(.TICKS_PER_SEC(32'd100000000),.BASE(SR_TIME64)) time_64bit
-     (.clk(dsp_clk), .rst(dsp_rst), .set_stb(set_stb_dsp), .set_addr(set_addr_dsp), .set_data(set_data_dsp),
-      .pps(pps_in), .vita_time(vita_time), .pps_int(pps_int));
-   
    // /////////////////////////////////////////////////////////////////////////////////////////
    // Debug Pins
    
@@ -753,9 +680,8 @@ module u2_core
      eth_mac_debug <= { { 6'd0, GMII_TX_EN, GMII_RX_DV, debug_mac0[7:0]},
 			{eth_rx_full2, eth_rx_empty2, eth_rx_occ2[13:0]} };
    
-   assign  debug_clk[0]  = GMII_RX_CLK; // wb_clk;
-   assign  debug_clk[1]  = dsp_clk;
-
+   assign  debug_clk[0]  = 0; // wb_clk;
+   assign  debug_clk[1]  = clk_to_mac;	
 /*
  
    wire        mdio_cpy  = MDIO;
@@ -769,27 +695,15 @@ module u2_core
 			     { 5'd0, GMII_TX_EN, GMII_TX_ER, GMII_GTX_CLK },
 			     { wr2_flags, rd2_flags },
 			     { 4'd0, wr2_ready_i, wr2_ready_o, rd2_ready_i, rd2_ready_o } };
+ */        
    assign debug 	 = { { GMII_RXD },
 			     { 5'd0, GMII_RX_DV, GMII_RX_ER, GMII_RX_CLK },
 			     { wr2_flags, rd2_flags },
 			     { GMII_TX_EN,3'd0, wr2_ready_i, wr2_ready_o, rd2_ready_i, rd2_ready_o } };
- */
-
-//   assign debug = debug_udp;
-   assign debug = vrc_debug;
-   assign debug_gpio_0 = { {pps_in, pps_int, 2'd0, vita_state},
-			   {2'd0, rx_dst_rdy, rx_src_rdy, rx_data[99:96]},
-			   {run_rx_d1, run_rx, strobe_rx, overrun, wr1_flags[3:0]} , 
-			   {wr1_ready_i, wr1_ready_o, rx1_src_rdy, rx1_dst_rdy, rx1_data[35:32]}};
-
-   assign debug_gpio_1 = {vita_time[63:32] };
-   
-/*
-    assign debug_gpio_1 = { { tx_f19_data[15:8] },
-			   { tx_f19_data[7:0] },
-			   { 3'd0, tx_f19_src_rdy, tx_f19_dst_rdy, tx_f19_data[18:16] },
-			   { 2'b0, rd2_ready_i, rd2_ready_o, rd2_flags } };
- */  
+          
+   assign  debug_gpio_0 = 0;
+ //debug_mac; //eth_mac_debug;
+   assign  debug_gpio_1 = 0;
    
 endmodule // u2_core
 
diff --git a/usrp2/top/u2_core/u2_core_udp.v b/usrp2/top/u2_core/u2_core_udp.v
new file mode 100644
index 000000000..d2e842b1c
--- /dev/null
+++ b/usrp2/top/u2_core/u2_core_udp.v
@@ -0,0 +1,873 @@
+// ////////////////////////////////////////////////////////////////////////////////
+// Module Name:    u2_core
+// ////////////////////////////////////////////////////////////////////////////////
+
+module u2_core
+  #(parameter RAM_SIZE=32768)
+  (// Clocks
+   input dsp_clk,
+   input wb_clk,
+   output clock_ready,
+   input clk_to_mac,
+   input pps_in,
+   
+   // Misc, debug
+   output [7:0] leds,
+   output [31:0] debug,
+   output [1:0] debug_clk,
+
+   // Expansion
+   input exp_pps_in,
+   output exp_pps_out,
+   
+   // GMII
+   //   GMII-CTRL
+   input GMII_COL,
+   input GMII_CRS,
+
+   //   GMII-TX
+   output [7:0] GMII_TXD,
+   output GMII_TX_EN,
+   output GMII_TX_ER,
+   output GMII_GTX_CLK,
+   input GMII_TX_CLK,  // 100mbps clk
+
+   //   GMII-RX
+   input [7:0] GMII_RXD,
+   input GMII_RX_CLK,
+   input GMII_RX_DV,
+   input GMII_RX_ER,
+
+   //   GMII-Management
+   inout MDIO,
+   output MDC,
+   input PHY_INTn,   // open drain
+   output PHY_RESETn,
+
+   // SERDES
+   output ser_enable,
+   output ser_prbsen,
+   output ser_loopen,
+   output ser_rx_en,
+   
+   output ser_tx_clk,
+   output [15:0] ser_t,
+   output ser_tklsb,
+   output ser_tkmsb,
+
+   input ser_rx_clk,
+   input [15:0] ser_r,
+   input ser_rklsb,
+   input ser_rkmsb,
+   
+   // CPLD interface
+   output cpld_start,
+   output cpld_mode,
+   output cpld_done,
+   input cpld_din,
+   input cpld_clk,
+   input cpld_detached,
+   output cpld_misc,
+   input cpld_init_b,
+   input por,
+   output config_success,
+   
+   // ADC
+   input [13:0] adc_a,
+   input adc_ovf_a,
+   output adc_on_a,
+   output adc_oe_a,
+   
+   input [13:0] adc_b,
+   input adc_ovf_b,
+   output adc_on_b,
+   output adc_oe_b,
+   
+   // DAC
+   output [15:0] dac_a,
+   output [15:0] dac_b,
+
+   // I2C
+   input scl_pad_i,
+   output scl_pad_o,
+   output scl_pad_oen_o,
+   input sda_pad_i,
+   output sda_pad_o,
+   output sda_pad_oen_o,
+   
+   // Clock Gen Control
+   output [1:0] clk_en,
+   output [1:0] clk_sel,
+   input clk_func,        // FIXME is an input to control the 9510
+   input clk_status,
+
+   // Generic SPI
+   output sclk,
+   output mosi,
+   input miso,
+   output sen_clk,
+   output sen_dac,
+   output sen_tx_db,
+   output sen_tx_adc,
+   output sen_tx_dac,
+   output sen_rx_db,
+   output sen_rx_adc,
+   output sen_rx_dac,
+   
+   // GPIO to DBoards
+   inout [15:0] io_tx,
+   inout [15:0] io_rx,
+
+   // External RAM
+   inout [17:0] RAM_D,
+   output [18:0] RAM_A,
+   output RAM_CE1n,
+   output RAM_CENn,
+   output RAM_CLK,
+   output RAM_WEn,
+   output RAM_OEn,
+   output RAM_LDn,
+   
+   // Debug stuff
+   output uart_tx_o, 
+   input uart_rx_i,
+   output uart_baud_o,
+   input sim_mode,
+   input [3:0] clock_divider
+   );
+
+   localparam SR_BUF_POOL = 64;   // Uses 1 reg
+   localparam SR_UDP_SM   = 96;   // 64 regs
+   localparam SR_RX_DSP   = 160;  // 16
+   localparam SR_RX_CTRL  = 176;  // 16
+   localparam SR_TIME64   = 192;  //  3
+   localparam SR_SIMTIMER = 198;  //  2
+   localparam SR_TX_DSP   = 208;  // 16
+   localparam SR_TX_CTRL  = 224;  // 16
+
+   // FIFO Sizes, 9 = 512 lines, 10 = 1024, 11 = 2048
+   // all (most?) are 36 bits wide, so 9 is 1 BRAM, 10 is 2, 11 is 4 BRAMs
+   localparam DSP_TX_FIFOSIZE = 10;
+   localparam DSP_RX_FIFOSIZE = 10;
+   localparam ETH_TX_FIFOSIZE = 10;
+   localparam ETH_RX_FIFOSIZE = 11;
+   localparam SERDES_TX_FIFOSIZE = 9;
+   localparam SERDES_RX_FIFOSIZE = 9;  // RX currently doesn't use a fifo?
+   
+   wire [7:0] 	set_addr, set_addr_dsp;
+   wire [31:0] 	set_data, set_data_dsp;
+   wire 	set_stb, set_stb_dsp;
+   
+   wire 	ram_loader_done;
+   wire 	ram_loader_rst, wb_rst, dsp_rst;
+
+   wire [31:0] 	status, status_b0, status_b1, status_b2, status_b3, status_b4, status_b5, status_b6, status_b7;
+   wire 	bus_error, spi_int, i2c_int, pps_int, onetime_int, periodic_int, buffer_int;
+   wire 	proc_int, overrun, underrun, uart_tx_int, uart_rx_int;
+
+   wire [31:0] 	debug_gpio_0, debug_gpio_1;
+   wire [31:0] 	atr_lines;
+
+   wire [31:0] 	debug_rx, debug_mac, debug_mac0, debug_mac1, debug_tx_dsp, debug_txc,
+		debug_serdes0, debug_serdes1, debug_serdes2, debug_rx_dsp, debug_udp;
+
+   wire [15:0] 	ser_rx_occ, ser_tx_occ, dsp_rx_occ, dsp_tx_occ, eth_rx_occ, eth_tx_occ, eth_rx_occ2;
+   wire 	ser_rx_full, ser_tx_full, dsp_rx_full, dsp_tx_full, eth_rx_full, eth_tx_full, eth_rx_full2;
+   wire 	ser_rx_empty, ser_tx_empty, dsp_rx_empty, dsp_tx_empty, eth_rx_empty, eth_tx_empty, eth_rx_empty2;
+	
+   wire 	serdes_link_up;
+   wire 	epoch;
+   wire [31:0] 	irq;
+   wire [63:0] 	vita_time;
+   
+   // ///////////////////////////////////////////////////////////////////////////////////////////////
+   // Wishbone Single Master INTERCON
+   localparam 	dw = 32;  // Data bus width
+   localparam 	aw = 16;  // Address bus width, for byte addressibility, 16 = 64K byte memory space
+   localparam	sw = 4;   // Select width -- 32-bit data bus with 8-bit granularity.  
+   
+   wire [dw-1:0] m0_dat_o, m0_dat_i;
+   wire [dw-1:0] s0_dat_o, s1_dat_o, s0_dat_i, s1_dat_i, s2_dat_o, s3_dat_o, s2_dat_i, s3_dat_i,
+		 s4_dat_o, s5_dat_o, s4_dat_i, s5_dat_i, s6_dat_o, s7_dat_o, s6_dat_i, s7_dat_i,
+		 s8_dat_o, s9_dat_o, s8_dat_i, s9_dat_i, sa_dat_o, sa_dat_i, sb_dat_i, sb_dat_o,
+		 sc_dat_i, sc_dat_o, sd_dat_i, sd_dat_o, se_dat_i, se_dat_o;
+   wire [aw-1:0] m0_adr,s0_adr,s1_adr,s2_adr,s3_adr,s4_adr,s5_adr,s6_adr,s7_adr,s8_adr,s9_adr,sa_adr,sb_adr,sc_adr, sd_adr, se_adr;
+   wire [sw-1:0] m0_sel,s0_sel,s1_sel,s2_sel,s3_sel,s4_sel,s5_sel,s6_sel,s7_sel,s8_sel,s9_sel,sa_sel,sb_sel,sc_sel, sd_sel, se_sel;
+   wire 	 m0_ack,s0_ack,s1_ack,s2_ack,s3_ack,s4_ack,s5_ack,s6_ack,s7_ack,s8_ack,s9_ack,sa_ack,sb_ack,sc_ack, sd_ack, se_ack;
+   wire 	 m0_stb,s0_stb,s1_stb,s2_stb,s3_stb,s4_stb,s5_stb,s6_stb,s7_stb,s8_stb,s9_stb,sa_stb,sb_stb,sc_stb, sd_stb, se_stb;
+   wire 	 m0_cyc,s0_cyc,s1_cyc,s2_cyc,s3_cyc,s4_cyc,s5_cyc,s6_cyc,s7_cyc,s8_cyc,s9_cyc,sa_cyc,sb_cyc,sc_cyc, sd_cyc, se_cyc;
+   wire 	 m0_err, m0_rty;
+   wire 	 m0_we,s0_we,s1_we,s2_we,s3_we,s4_we,s5_we,s6_we,s7_we,s8_we,s9_we,sa_we,sb_we,sc_we,sd_we, se_we;
+   
+   wb_1master #(.decode_w(6),
+		.s0_addr(6'b0000_00),.s0_mask(6'b100000),
+		.s1_addr(6'b1000_00),.s1_mask(6'b110000),
+ 		.s2_addr(6'b1100_00),.s2_mask(6'b111111),
+		.s3_addr(6'b1100_01),.s3_mask(6'b111111),
+		.s4_addr(6'b1100_10),.s4_mask(6'b111111),
+		.s5_addr(6'b1100_11),.s5_mask(6'b111111),
+		.s6_addr(6'b1101_00),.s6_mask(6'b111111),
+		.s7_addr(6'b1101_01),.s7_mask(6'b111111),
+		.s8_addr(6'b1101_10),.s8_mask(6'b111111),
+		.s9_addr(6'b1101_11),.s9_mask(6'b111111),
+		.sa_addr(6'b1110_00),.sa_mask(6'b111111),
+		.sb_addr(6'b1110_01),.sb_mask(6'b111111),
+		.sc_addr(6'b1110_10),.sc_mask(6'b111111),
+		.sd_addr(6'b1110_11),.sd_mask(6'b111111),
+		.se_addr(6'b1111_00),.se_mask(6'b111111),
+		.sf_addr(6'b1111_01),.sf_mask(6'b111111),
+		.dw(dw),.aw(aw),.sw(sw)) wb_1master
+     (.clk_i(wb_clk),.rst_i(wb_rst),       
+      .m0_dat_o(m0_dat_o),.m0_ack_o(m0_ack),.m0_err_o(m0_err),.m0_rty_o(m0_rty),.m0_dat_i(m0_dat_i),
+      .m0_adr_i(m0_adr),.m0_sel_i(m0_sel),.m0_we_i(m0_we),.m0_cyc_i(m0_cyc),.m0_stb_i(m0_stb),
+      .s0_dat_o(s0_dat_o),.s0_adr_o(s0_adr),.s0_sel_o(s0_sel),.s0_we_o	(s0_we),.s0_cyc_o(s0_cyc),.s0_stb_o(s0_stb),
+      .s0_dat_i(s0_dat_i),.s0_ack_i(s0_ack),.s0_err_i(0),.s0_rty_i(0),
+      .s1_dat_o(s1_dat_o),.s1_adr_o(s1_adr),.s1_sel_o(s1_sel),.s1_we_o	(s1_we),.s1_cyc_o(s1_cyc),.s1_stb_o(s1_stb),
+      .s1_dat_i(s1_dat_i),.s1_ack_i(s1_ack),.s1_err_i(0),.s1_rty_i(0),
+      .s2_dat_o(s2_dat_o),.s2_adr_o(s2_adr),.s2_sel_o(s2_sel),.s2_we_o	(s2_we),.s2_cyc_o(s2_cyc),.s2_stb_o(s2_stb),
+      .s2_dat_i(s2_dat_i),.s2_ack_i(s2_ack),.s2_err_i(0),.s2_rty_i(0),
+      .s3_dat_o(s3_dat_o),.s3_adr_o(s3_adr),.s3_sel_o(s3_sel),.s3_we_o	(s3_we),.s3_cyc_o(s3_cyc),.s3_stb_o(s3_stb),
+      .s3_dat_i(s3_dat_i),.s3_ack_i(s3_ack),.s3_err_i(0),.s3_rty_i(0),
+      .s4_dat_o(s4_dat_o),.s4_adr_o(s4_adr),.s4_sel_o(s4_sel),.s4_we_o	(s4_we),.s4_cyc_o(s4_cyc),.s4_stb_o(s4_stb),
+      .s4_dat_i(s4_dat_i),.s4_ack_i(s4_ack),.s4_err_i(0),.s4_rty_i(0),
+      .s5_dat_o(s5_dat_o),.s5_adr_o(s5_adr),.s5_sel_o(s5_sel),.s5_we_o	(s5_we),.s5_cyc_o(s5_cyc),.s5_stb_o(s5_stb),
+      .s5_dat_i(s5_dat_i),.s5_ack_i(s5_ack),.s5_err_i(0),.s5_rty_i(0),
+      .s6_dat_o(s6_dat_o),.s6_adr_o(s6_adr),.s6_sel_o(s6_sel),.s6_we_o	(s6_we),.s6_cyc_o(s6_cyc),.s6_stb_o(s6_stb),
+      .s6_dat_i(s6_dat_i),.s6_ack_i(s6_ack),.s6_err_i(0),.s6_rty_i(0),
+      .s7_dat_o(s7_dat_o),.s7_adr_o(s7_adr),.s7_sel_o(s7_sel),.s7_we_o	(s7_we),.s7_cyc_o(s7_cyc),.s7_stb_o(s7_stb),
+      .s7_dat_i(s7_dat_i),.s7_ack_i(s7_ack),.s7_err_i(0),.s7_rty_i(0),
+      .s8_dat_o(s8_dat_o),.s8_adr_o(s8_adr),.s8_sel_o(s8_sel),.s8_we_o	(s8_we),.s8_cyc_o(s8_cyc),.s8_stb_o(s8_stb),
+      .s8_dat_i(s8_dat_i),.s8_ack_i(s8_ack),.s8_err_i(0),.s8_rty_i(0),
+      .s9_dat_o(s9_dat_o),.s9_adr_o(s9_adr),.s9_sel_o(s9_sel),.s9_we_o	(s9_we),.s9_cyc_o(s9_cyc),.s9_stb_o(s9_stb),
+      .s9_dat_i(s9_dat_i),.s9_ack_i(s9_ack),.s9_err_i(0),.s9_rty_i(0),
+      .sa_dat_o(sa_dat_o),.sa_adr_o(sa_adr),.sa_sel_o(sa_sel),.sa_we_o(sa_we),.sa_cyc_o(sa_cyc),.sa_stb_o(sa_stb),
+      .sa_dat_i(sa_dat_i),.sa_ack_i(sa_ack),.sa_err_i(0),.sa_rty_i(0),
+      .sb_dat_o(sb_dat_o),.sb_adr_o(sb_adr),.sb_sel_o(sb_sel),.sb_we_o(sb_we),.sb_cyc_o(sb_cyc),.sb_stb_o(sb_stb),
+      .sb_dat_i(sb_dat_i),.sb_ack_i(sb_ack),.sb_err_i(0),.sb_rty_i(0),
+      .sc_dat_o(sc_dat_o),.sc_adr_o(sc_adr),.sc_sel_o(sc_sel),.sc_we_o(sc_we),.sc_cyc_o(sc_cyc),.sc_stb_o(sc_stb),
+      .sc_dat_i(sc_dat_i),.sc_ack_i(sc_ack),.sc_err_i(0),.sc_rty_i(0),
+      .sd_dat_o(sd_dat_o),.sd_adr_o(sd_adr),.sd_sel_o(sd_sel),.sd_we_o(sd_we),.sd_cyc_o(sd_cyc),.sd_stb_o(sd_stb),
+      .sd_dat_i(sd_dat_i),.sd_ack_i(sd_ack),.sd_err_i(0),.sd_rty_i(0),
+      .se_dat_o(se_dat_o),.se_adr_o(se_adr),.se_sel_o(se_sel),.se_we_o(se_we),.se_cyc_o(se_cyc),.se_stb_o(se_stb),
+      .se_dat_i(se_dat_i),.se_ack_i(se_ack),.se_err_i(0),.se_rty_i(0),
+      .sf_dat_i(0),.sf_ack_i(0),.sf_err_i(0),.sf_rty_i(0)  );
+   
+   //////////////////////////////////////////////////////////////////////////////////////////
+   // Reset Controller
+   system_control sysctrl (.wb_clk_i(wb_clk), // .por_i(por),
+			   .ram_loader_rst_o(ram_loader_rst),
+			   .wb_rst_o(wb_rst),
+			   .ram_loader_done_i(ram_loader_done));
+
+   assign 	 config_success = ram_loader_done;
+   reg 		 takeover = 0;
+
+   wire 	 cpld_start_int, cpld_mode_int, cpld_done_int;
+   
+   always @(posedge wb_clk)
+     if(ram_loader_done)
+       takeover = 1;
+   assign 	 cpld_misc = ~takeover;
+
+   wire 	 sd_clk, sd_csn, sd_mosi, sd_miso;
+   
+   assign 	 sd_miso = cpld_din;
+   assign 	 cpld_start = takeover ? sd_clk	: cpld_start_int;
+   assign 	 cpld_mode = takeover ? sd_csn : cpld_mode_int;
+   assign 	 cpld_done = takeover ? sd_mosi : cpld_done_int;
+   
+   // ///////////////////////////////////////////////////////////////////
+   // RAM Loader
+
+   wire [31:0] 	 ram_loader_dat, if_dat;
+   wire [15:0] 	 ram_loader_adr;
+   wire [14:0] 	 if_adr;
+   wire [3:0] 	 ram_loader_sel;
+   wire 	 ram_loader_stb, ram_loader_we;
+   wire 	 iwb_ack, iwb_stb;
+   ram_loader #(.AWIDTH(16),.RAM_SIZE(RAM_SIZE))
+     ram_loader (.wb_clk(wb_clk),.dsp_clk(dsp_clk),.ram_loader_rst(ram_loader_rst),
+		 .wb_dat(ram_loader_dat),.wb_adr(ram_loader_adr),
+		 .wb_stb(ram_loader_stb),.wb_sel(ram_loader_sel),
+		 .wb_we(ram_loader_we),
+		 .ram_loader_done(ram_loader_done),
+		 // CPLD Interface
+		 .cpld_clk(cpld_clk),
+		 .cpld_din(cpld_din),
+		 .cpld_start(cpld_start_int),
+		 .cpld_mode(cpld_mode_int),
+		 .cpld_done(cpld_done_int),
+		 .cpld_detached(cpld_detached));
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // Processor
+   aeMB_core_BE #(.ISIZ(16),.DSIZ(16),.MUL(0),.BSF(1))
+     aeMB (.sys_clk_i(wb_clk), .sys_rst_i(wb_rst),
+	   // Instruction Wishbone bus to I-RAM
+	   .if_adr(if_adr),
+	   .if_dat(if_dat),
+	   // Data Wishbone bus to system bus fabric
+	   .dwb_we_o(m0_we),.dwb_stb_o(m0_stb),.dwb_dat_o(m0_dat_i),.dwb_adr_o(m0_adr),
+	   .dwb_dat_i(m0_dat_o),.dwb_ack_i(m0_ack),.dwb_sel_o(m0_sel),.dwb_cyc_o(m0_cyc),
+	   // Interrupts and exceptions
+	   .sys_int_i(proc_int),.sys_exc_i(bus_error) );
+   
+   assign 	 bus_error = m0_err | m0_rty;
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // Dual Ported RAM -- D-Port is Slave #0 on main Wishbone
+   // I-port connects directly to processor and ram loader
+
+   wire 	 flush_icache;
+   ram_harvard #(.AWIDTH(15),.RAM_SIZE(RAM_SIZE),.ICWIDTH(7),.DCWIDTH(6))
+     sys_ram(.wb_clk_i(wb_clk),.wb_rst_i(wb_rst),
+	     
+	     .ram_loader_adr_i(ram_loader_adr[14:0]), .ram_loader_dat_i(ram_loader_dat),
+	     .ram_loader_stb_i(ram_loader_stb), .ram_loader_sel_i(ram_loader_sel),
+	     .ram_loader_we_i(ram_loader_we),
+	     .ram_loader_done_i(ram_loader_done),
+	     
+	     .if_adr(if_adr), 
+	     .if_data(if_dat), 
+	     
+	     .dwb_adr_i(s0_adr[14:0]), .dwb_dat_i(s0_dat_o), .dwb_dat_o(s0_dat_i),
+	     .dwb_we_i(s0_we), .dwb_ack_o(s0_ack), .dwb_stb_i(s0_stb), .dwb_sel_i(s0_sel),
+	     .flush_icache(flush_icache));
+   
+   setting_reg #(.my_addr(7)) sr_icache (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
+					 .in(set_data),.out(),.changed(flush_icache));
+
+   // /////////////////////////////////////////////////////////////////////////
+   // Buffer Pool, slave #1
+   wire 	 rd0_ready_i, rd0_ready_o;
+   wire 	 rd1_ready_i, rd1_ready_o;
+   wire 	 rd2_ready_i, rd2_ready_o;
+   wire 	 rd3_ready_i, rd3_ready_o;
+   wire [3:0] 	 rd0_flags, rd1_flags, rd2_flags, rd3_flags;
+   wire [31:0] 	 rd0_dat, rd1_dat, rd2_dat, rd3_dat;
+
+   wire 	 wr0_ready_i, wr0_ready_o;
+   wire 	 wr1_ready_i, wr1_ready_o;
+   wire 	 wr2_ready_i, wr2_ready_o;
+   wire 	 wr3_ready_i, wr3_ready_o;
+   wire [3:0] 	 wr0_flags, wr1_flags, wr2_flags, wr3_flags;
+   wire [31:0] 	 wr0_dat, wr1_dat, wr2_dat, wr3_dat;
+   
+   buffer_pool #(.BUF_SIZE(9), .SET_ADDR(SR_BUF_POOL)) buffer_pool
+     (.wb_clk_i(wb_clk),.wb_rst_i(wb_rst),
+      .wb_we_i(s1_we),.wb_stb_i(s1_stb),.wb_adr_i(s1_adr),.wb_dat_i(s1_dat_o),   
+      .wb_dat_o(s1_dat_i),.wb_ack_o(s1_ack),.wb_err_o(),.wb_rty_o(),
+   
+      .stream_clk(dsp_clk), .stream_rst(dsp_rst),
+      .set_stb(set_stb_dsp), .set_addr(set_addr_dsp), .set_data(set_data_dsp),
+      .status(status),.sys_int_o(buffer_int),
+
+      .s0(status_b0),.s1(status_b1),.s2(status_b2),.s3(status_b3),
+      .s4(status_b4),.s5(status_b5),.s6(status_b6),.s7(status_b7),
+
+      // Write Interfaces
+      .wr0_data_i(wr0_dat), .wr0_flags_i(wr0_flags), .wr0_ready_i(wr0_ready_i), .wr0_ready_o(wr0_ready_o),
+      .wr1_data_i(wr1_dat), .wr1_flags_i(wr1_flags), .wr1_ready_i(wr1_ready_i), .wr1_ready_o(wr1_ready_o),
+      .wr2_data_i(wr2_dat), .wr2_flags_i(wr2_flags), .wr2_ready_i(wr2_ready_i), .wr2_ready_o(wr2_ready_o),
+      .wr3_data_i(wr3_dat), .wr3_flags_i(wr3_flags), .wr3_ready_i(wr3_ready_i), .wr3_ready_o(wr3_ready_o),
+      // Read Interfaces
+      .rd0_data_o(rd0_dat), .rd0_flags_o(rd0_flags), .rd0_ready_i(rd0_ready_i), .rd0_ready_o(rd0_ready_o),
+      .rd1_data_o(rd1_dat), .rd1_flags_o(rd1_flags), .rd1_ready_i(rd1_ready_i), .rd1_ready_o(rd1_ready_o),
+      .rd2_data_o(rd2_dat), .rd2_flags_o(rd2_flags), .rd2_ready_i(rd2_ready_i), .rd2_ready_o(rd2_ready_o),
+      .rd3_data_o(rd3_dat), .rd3_flags_o(rd3_flags), .rd3_ready_i(rd3_ready_i), .rd3_ready_o(rd3_ready_o)
+      );
+
+   wire [31:0] 	 status_enc;
+   priority_enc priority_enc (.in({16'b0,status[15:0]}), .out(status_enc));
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // SPI -- Slave #2
+   spi_top shared_spi
+     (.wb_clk_i(wb_clk),.wb_rst_i(wb_rst),.wb_adr_i(s2_adr[4:0]),.wb_dat_i(s2_dat_o),
+      .wb_dat_o(s2_dat_i),.wb_sel_i(s2_sel),.wb_we_i(s2_we),.wb_stb_i(s2_stb),
+      .wb_cyc_i(s2_cyc),.wb_ack_o(s2_ack),.wb_err_o(),.wb_int_o(spi_int),
+      .ss_pad_o({sen_tx_db,sen_tx_adc,sen_tx_dac,sen_rx_db,sen_rx_adc,sen_rx_dac,sen_dac,sen_clk}),
+      .sclk_pad_o(sclk),.mosi_pad_o(mosi),.miso_pad_i(miso) );
+
+   // /////////////////////////////////////////////////////////////////////////
+   // I2C -- Slave #3
+   i2c_master_top #(.ARST_LVL(1)) 
+     i2c (.wb_clk_i(wb_clk),.wb_rst_i(wb_rst),.arst_i(1'b0), 
+	  .wb_adr_i(s3_adr[4:2]),.wb_dat_i(s3_dat_o[7:0]),.wb_dat_o(s3_dat_i[7:0]),
+	  .wb_we_i(s3_we),.wb_stb_i(s3_stb),.wb_cyc_i(s3_cyc),
+	  .wb_ack_o(s3_ack),.wb_inta_o(i2c_int),
+	  .scl_pad_i(scl_pad_i),.scl_pad_o(scl_pad_o),.scl_padoen_o(scl_pad_oen_o),
+	  .sda_pad_i(sda_pad_i),.sda_pad_o(sda_pad_o),.sda_padoen_o(sda_pad_oen_o) );
+
+   assign 	 s3_dat_i[31:8] = 24'd0;
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // GPIOs -- Slave #4
+   nsgpio nsgpio(.clk_i(wb_clk),.rst_i(wb_rst),
+		 .cyc_i(s4_cyc),.stb_i(s4_stb),.adr_i(s4_adr[3:0]),.we_i(s4_we),
+		 .dat_i(s4_dat_o),.dat_o(s4_dat_i),.ack_o(s4_ack),
+		 .atr(atr_lines),.debug_0(debug_gpio_0),.debug_1(debug_gpio_1),
+		 .gpio( {io_tx,io_rx} ) );
+
+   // /////////////////////////////////////////////////////////////////////////
+   // Buffer Pool Status -- Slave #5   
+   
+   reg [31:0] 	 cycle_count;
+   always @(posedge wb_clk)
+     if(wb_rst)
+       cycle_count <= 0;
+     else
+       cycle_count <= cycle_count + 1;
+   
+   wb_readback_mux buff_pool_status
+     (.wb_clk_i(wb_clk), .wb_rst_i(wb_rst), .wb_stb_i(s5_stb),
+      .wb_adr_i(s5_adr), .wb_dat_o(s5_dat_i), .wb_ack_o(s5_ack),
+      
+      .word00(status_b0),.word01(status_b1),.word02(status_b2),.word03(status_b3),
+      .word04(status_b4),.word05(status_b5),.word06(status_b6),.word07(status_b7),
+      .word08(status),.word09({sim_mode,27'b0,clock_divider[3:0]}),.word10(vita_time[63:32]),
+      .word11(vita_time[31:0]),.word12(32'b0),.word13(irq),.word14(status_enc),.word15(cycle_count)
+      );
+
+   // /////////////////////////////////////////////////////////////////////////
+   // Ethernet MAC  Slave #6
+
+   wire [18:0] 	 rx_f19_data, tx_f19_data;
+   wire 	 rx_f19_src_rdy, rx_f19_dst_rdy, rx_f36_src_rdy, rx_f36_dst_rdy;
+   
+   simple_gemac_wrapper19 #(.RXFIFOSIZE(11), .TXFIFOSIZE(6)) simple_gemac_wrapper19
+     (.clk125(clk_to_mac),  .reset(wb_rst),
+      .GMII_GTX_CLK(GMII_GTX_CLK), .GMII_TX_EN(GMII_TX_EN),  
+      .GMII_TX_ER(GMII_TX_ER), .GMII_TXD(GMII_TXD),
+      .GMII_RX_CLK(GMII_RX_CLK), .GMII_RX_DV(GMII_RX_DV),  
+      .GMII_RX_ER(GMII_RX_ER), .GMII_RXD(GMII_RXD),
+      .sys_clk(dsp_clk),
+      .rx_f19_data(rx_f19_data), .rx_f19_src_rdy(rx_f19_src_rdy), .rx_f19_dst_rdy(rx_f19_dst_rdy),
+      .tx_f19_data(tx_f19_data), .tx_f19_src_rdy(tx_f19_src_rdy), .tx_f19_dst_rdy(tx_f19_dst_rdy),
+      .wb_clk(wb_clk), .wb_rst(wb_rst), .wb_stb(s6_stb), .wb_cyc(s6_cyc), .wb_ack(s6_ack),
+      .wb_we(s6_we), .wb_adr(s6_adr), .wb_dat_i(s6_dat_o), .wb_dat_o(s6_dat_i),
+      .mdio(MDIO), .mdc(MDC),
+      .debug(debug_mac));
+
+   wire [35:0] 	 udp_tx_data, udp_rx_data;
+   wire 	 udp_tx_src_rdy, udp_tx_dst_rdy, udp_rx_src_rdy, udp_rx_dst_rdy;
+   
+   udp_wrapper #(.BASE(SR_UDP_SM)) udp_wrapper
+     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
+      .set_stb(set_stb_dsp), .set_addr(set_addr_dsp), .set_data(set_data_dsp),
+      .rx_f19_data(rx_f19_data), .rx_f19_src_rdy_i(rx_f19_src_rdy), .rx_f19_dst_rdy_o(rx_f19_dst_rdy),
+      .tx_f19_data(tx_f19_data), .tx_f19_src_rdy_o(tx_f19_src_rdy), .tx_f19_dst_rdy_i(tx_f19_dst_rdy),
+      .rx_f36_data(udp_rx_data), .rx_f36_src_rdy_o(udp_rx_src_rdy), .rx_f36_dst_rdy_i(udp_rx_dst_rdy),
+      .tx_f36_data(udp_tx_data), .tx_f36_src_rdy_i(udp_tx_src_rdy), .tx_f36_dst_rdy_o(udp_tx_dst_rdy),
+      .debug(debug_udp) );
+
+   fifo_cascade #(.WIDTH(36), .SIZE(ETH_TX_FIFOSIZE)) tx_eth_fifo
+     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
+      .datain({rd2_flags,rd2_dat}), .src_rdy_i(rd2_ready_o), .dst_rdy_o(rd2_ready_i),
+      .dataout(udp_tx_data), .src_rdy_o(udp_tx_src_rdy), .dst_rdy_i(udp_tx_dst_rdy));
+
+   fifo_cascade #(.WIDTH(36), .SIZE(ETH_RX_FIFOSIZE)) rx_eth_fifo
+     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
+      .datain(udp_rx_data), .src_rdy_i(udp_rx_src_rdy), .dst_rdy_o(udp_rx_dst_rdy),
+      .dataout({wr2_flags,wr2_dat}), .src_rdy_o(wr2_ready_i), .dst_rdy_i(wr2_ready_o));
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // Settings Bus -- Slave #7
+   settings_bus settings_bus
+     (.wb_clk(wb_clk),.wb_rst(wb_rst),.wb_adr_i(s7_adr),.wb_dat_i(s7_dat_o),
+      .wb_stb_i(s7_stb),.wb_we_i(s7_we),.wb_ack_o(s7_ack),
+      .strobe(set_stb),.addr(set_addr),.data(set_data));
+   
+   assign 	 s7_dat_i = 32'd0;
+
+   settings_bus_crossclock settings_bus_crossclock
+     (.clk_i(wb_clk), .rst_i(wb_rst), .set_stb_i(set_stb), .set_addr_i(set_addr), .set_data_i(set_data),
+      .clk_o(dsp_clk), .rst_o(dsp_rst), .set_stb_o(set_stb_dsp), .set_addr_o(set_addr_dsp), .set_data_o(set_data_dsp));
+   
+   // Output control lines
+   wire [7:0] 	 clock_outs, serdes_outs, adc_outs;
+   assign 	 {clock_ready, clk_en[1:0], clk_sel[1:0]} = clock_outs[4:0];
+   assign 	 {ser_enable, ser_prbsen, ser_loopen, ser_rx_en} = serdes_outs[3:0];
+   assign 	 {adc_oe_a, adc_on_a, adc_oe_b, adc_on_b } = adc_outs[3:0];
+
+   wire 	 phy_reset;
+   assign 	 PHY_RESETn = ~phy_reset;
+   
+   setting_reg #(.my_addr(0),.width(8)) sr_clk (.clk(wb_clk),.rst(wb_rst),.strobe(s7_ack),.addr(set_addr),
+				      .in(set_data),.out(clock_outs),.changed());
+   setting_reg #(.my_addr(1),.width(8)) sr_ser (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
+				      .in(set_data),.out(serdes_outs),.changed());
+   setting_reg #(.my_addr(2),.width(8)) sr_adc (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
+				      .in(set_data),.out(adc_outs),.changed());
+   setting_reg #(.my_addr(4),.width(1)) sr_phy (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
+				      .in(set_data),.out(phy_reset),.changed());
+
+   // /////////////////////////////////////////////////////////////////////////
+   //  LEDS
+   //    register 8 determines whether leds are controlled by SW or not
+   //    1 = controlled by HW, 0 = by SW
+   //    In Rev3 there are only 6 leds, and the highest one is on the ETH connector
+   
+   wire [7:0] 	 led_src, led_sw;
+   wire [7:0] 	 led_hw = {clk_status,serdes_link_up};
+   
+   setting_reg #(.my_addr(3),.width(8)) sr_led (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
+				      .in(set_data),.out(led_sw),.changed());
+   setting_reg #(.my_addr(8),.width(8)) sr_led_src (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
+					  .in(set_data),.out(led_src),.changed());
+
+   assign 	 leds = (led_src & led_hw) | (~led_src & led_sw);
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // Interrupt Controller, Slave #8
+
+   assign irq= {{8'b0},
+		{8'b0},
+		{3'b0, periodic_int, clk_status, serdes_link_up, uart_tx_int, uart_rx_int},
+		{pps_int,overrun,underrun,PHY_INTn,i2c_int,spi_int,onetime_int,buffer_int}};
+   
+   pic pic(.clk_i(wb_clk),.rst_i(wb_rst),.cyc_i(s8_cyc),.stb_i(s8_stb),.adr_i(s8_adr[4:2]),
+	   .we_i(s8_we),.dat_i(s8_dat_o),.dat_o(s8_dat_i),.ack_o(s8_ack),.int_o(proc_int),
+	   .irq(irq) );
+ 	 
+   // /////////////////////////////////////////////////////////////////////////
+   // Master Timer, Slave #9
+
+   // No longer used, replaced with simple_timer below
+   /*
+   wire [31:0] 	 master_time;
+   timer timer
+     (.wb_clk_i(wb_clk),.rst_i(wb_rst),
+      .cyc_i(s9_cyc),.stb_i(s9_stb),.adr_i(s9_adr[4:2]),
+      .we_i(s9_we),.dat_i(s9_dat_o),.dat_o(s9_dat_i),.ack_o(s9_ack),
+      .sys_clk_i(dsp_clk),.master_time_i(master_time),.int_o(timer_int) );
+    */
+   assign s9_ack = 0;
+   
+   // /////////////////////////////////////////////////////////////////////////
+   //  Simple Timer interrupts
+   
+   simple_timer #(.BASE(SR_SIMTIMER)) simple_timer
+     (.clk(wb_clk), .reset(wb_rst),
+      .set_stb(set_stb), .set_addr(set_addr), .set_data(set_data),
+      .onetime_int(onetime_int), .periodic_int(periodic_int));
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // UART, Slave #10
+
+   simple_uart #(.TXDEPTH(3),.RXDEPTH(3)) uart  // depth of 3 is 128 entries
+     (.clk_i(wb_clk),.rst_i(wb_rst),
+      .we_i(sa_we),.stb_i(sa_stb),.cyc_i(sa_cyc),.ack_o(sa_ack),
+      .adr_i(sa_adr[4:2]),.dat_i(sa_dat_o),.dat_o(sa_dat_i),
+      .rx_int_o(uart_rx_int),.tx_int_o(uart_tx_int),
+      .tx_o(uart_tx_o),.rx_i(uart_rx_i),.baud_o(uart_baud_o));
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // ATR Controller, Slave #11
+
+   wire 	 run_rx, run_tx;
+   reg 		 run_rx_d1;
+   always @(posedge dsp_clk)
+     run_rx_d1 <= run_rx;
+   
+   atr_controller atr_controller
+     (.clk_i(wb_clk),.rst_i(wb_rst),
+      .adr_i(sb_adr[5:0]),.sel_i(sb_sel),.dat_i(sb_dat_o),.dat_o(sb_dat_i),
+      .we_i(sb_we),.stb_i(sb_stb),.cyc_i(sb_cyc),.ack_o(sb_ack),
+      .run_rx(run_rx_d1),.run_tx(run_tx),.ctrl_lines(atr_lines) );
+   
+   // //////////////////////////////////////////////////////////////////////////
+   // Time Sync, Slave #12 
+
+   // No longer used, see time_64bit.  Still need to handle mimo time, though
+   assign sc_ack = 0;
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // SD Card Reader / Writer, Slave #13
+
+   sd_spi_wb sd_spi_wb
+     (.clk(wb_clk),.rst(wb_rst),
+      .sd_clk(sd_clk),.sd_csn(sd_csn),.sd_mosi(sd_mosi),.sd_miso(sd_miso),
+      .wb_cyc_i(sd_cyc),.wb_stb_i(sd_stb),.wb_we_i(sd_we),
+      .wb_adr_i(sd_adr[3:2]),.wb_dat_i(sd_dat_o[7:0]),.wb_dat_o(sd_dat_i[7:0]),
+      .wb_ack_o(sd_ack) );
+
+   assign sd_dat_i[31:8] = 0;
+
+   // /////////////////////////////////////////////////////////////////////////
+   // DSP RX
+   wire [31:0] 	 sample_rx, sample_tx;
+   wire 	 strobe_rx, strobe_tx;
+   wire 	 rx_dst_rdy, rx_src_rdy, rx1_dst_rdy, rx1_src_rdy;
+   wire [99:0] 	 rx_data;
+   wire [35:0] 	 rx1_data;
+   
+   dsp_core_rx #(.BASE(SR_RX_DSP)) dsp_core_rx
+     (.clk(dsp_clk),.rst(dsp_rst),
+      .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
+      .adc_a(adc_a),.adc_ovf_a(adc_ovf_a),.adc_b(adc_b),.adc_ovf_b(adc_ovf_b),
+      .sample(sample_rx), .run(run_rx_d1), .strobe(strobe_rx),
+      .debug(debug_rx_dsp) );
+
+   wire [31:0] 	 vrc_debug;
+   
+   vita_rx_control #(.BASE(SR_RX_CTRL), .WIDTH(32)) vita_rx_control
+     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
+      .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
+      .vita_time(vita_time), .overrun(overrun),
+      .sample(sample_rx), .run(run_rx), .strobe(strobe_rx),
+      .sample_fifo_o(rx_data), .sample_fifo_dst_rdy_i(rx_dst_rdy), .sample_fifo_src_rdy_o(rx_src_rdy),
+      .debug_rx(vrc_debug));
+
+   wire [3:0] 	 vita_state;
+   
+   vita_rx_framer #(.BASE(SR_RX_CTRL), .MAXCHAN(1)) vita_rx_framer
+     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
+      .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
+      .sample_fifo_i(rx_data), .sample_fifo_dst_rdy_o(rx_dst_rdy), .sample_fifo_src_rdy_i(rx_src_rdy),
+      .data_o(rx1_data), .dst_rdy_i(rx1_dst_rdy), .src_rdy_o(rx1_src_rdy),
+      .fifo_occupied(), .fifo_full(), .fifo_empty(),
+      .debug_rx(vita_state) );
+
+   fifo_cascade #(.WIDTH(36), .SIZE(DSP_RX_FIFOSIZE)) rx_fifo_cascade
+     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
+      .datain(rx1_data), .src_rdy_i(rx1_src_rdy), .dst_rdy_o(rx1_dst_rdy),
+      .dataout({wr1_flags,wr1_dat}), .src_rdy_o(wr1_ready_i), .dst_rdy_i(wr1_ready_o));
+
+   // ///////////////////////////////////////////////////////////////////////////////////
+   // DSP TX
+
+   wire [35:0] 	 tx_data;
+   wire [99:0] 	 tx1_data;
+   wire 	 tx_src_rdy, tx_dst_rdy, tx1_src_rdy, tx1_dst_rdy;
+
+   wire [31:0] 	 debug_vtc, debug_vtd, debug_vt;
+   
+   fifo_cascade #(.WIDTH(36), .SIZE(DSP_TX_FIFOSIZE)) tx_fifo_cascade
+     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
+      .datain({rd1_flags,rd1_dat}), .src_rdy_i(rd1_ready_o), .dst_rdy_o(rd1_ready_i),
+      .dataout(tx_data), .src_rdy_o(tx_src_rdy), .dst_rdy_i(tx_dst_rdy) );
+
+   vita_tx_deframer #(.BASE(SR_TX_CTRL), .MAXCHAN(1)) vita_tx_deframer
+     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
+      .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
+      .data_i(tx_data), .src_rdy_i(tx_src_rdy), .dst_rdy_o(tx_dst_rdy),
+      .sample_fifo_o(tx1_data), .sample_fifo_src_rdy_o(tx1_src_rdy), .sample_fifo_dst_rdy_i(tx1_dst_rdy),
+      .debug(debug_vtd) );
+
+   vita_tx_control #(.BASE(SR_TX_CTRL), .WIDTH(32)) vita_tx_control
+     (.clk(dsp_clk), .reset(dsp_rst), .clear(0),
+      .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
+      .vita_time(vita_time),.underrun(underrun),
+      .sample_fifo_i(tx1_data), .sample_fifo_src_rdy_i(tx1_src_rdy), .sample_fifo_dst_rdy_o(tx1_dst_rdy),
+      .sample(sample_tx), .run(run_tx), .strobe(strobe_tx),
+      .debug(debug_vtc) );
+   
+   assign debug_vt = debug_vtc | debug_vtd;
+   
+   dsp_core_tx #(.BASE(SR_TX_DSP)) dsp_core_tx
+     (.clk(dsp_clk),.rst(dsp_rst),
+      .set_stb(set_stb_dsp),.set_addr(set_addr_dsp),.set_data(set_data_dsp),
+      .sample(sample_tx), .run(run_tx), .strobe(strobe_tx),
+      .dac_a(dac_a),.dac_b(dac_b),
+      .debug(debug_tx_dsp) );
+
+   assign dsp_rst = wb_rst;
+
+   // ///////////////////////////////////////////////////////////////////////////////////
+   // SERDES
+
+   serdes #(.TXFIFOSIZE(SERDES_TX_FIFOSIZE),.RXFIFOSIZE(SERDES_RX_FIFOSIZE)) serdes
+     (.clk(dsp_clk),.rst(dsp_rst),
+      .ser_tx_clk(ser_tx_clk),.ser_t(ser_t),.ser_tklsb(ser_tklsb),.ser_tkmsb(ser_tkmsb),
+      .rd_dat_i(rd0_dat),.rd_flags_i(rd0_flags),.rd_ready_o(rd0_ready_i),.rd_ready_i(rd0_ready_o),
+      .ser_rx_clk(ser_rx_clk),.ser_r(ser_r),.ser_rklsb(ser_rklsb),.ser_rkmsb(ser_rkmsb),
+      .wr_dat_o(wr0_dat),.wr_flags_o(wr0_flags),.wr_ready_o(wr0_ready_i),.wr_ready_i(wr0_ready_o),
+      .tx_occupied(ser_tx_occ),.tx_full(ser_tx_full),.tx_empty(ser_tx_empty),
+      .rx_occupied(ser_rx_occ),.rx_full(ser_rx_full),.rx_empty(ser_rx_empty),
+      .serdes_link_up(serdes_link_up),.debug0(debug_serdes0), .debug1(debug_serdes1) );
+
+   // ///////////////////////////////////////////////////////////////////////////////////
+   // External RAM Interface
+
+   localparam PAGE_SIZE = 10;  // PAGE SIZE is in bytes, 10 = 1024 bytes
+
+   wire [15:0] bus2ram, ram2bus;
+   wire [15:0] bridge_adr;
+   wire [1:0]  bridge_sel;
+   wire        bridge_stb, bridge_cyc, bridge_we, bridge_ack;
+   
+   wire [19:0] page;
+   wire [19:0] wb_ram_adr = {page[19:PAGE_SIZE],bridge_adr[PAGE_SIZE-1:0]};
+   setting_reg #(.my_addr(6),.width(20)) sr_page (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
+				       .in(set_data),.out(page),.changed());
+
+   wb_bridge_16_32 bridge
+     (.wb_clk(wb_clk),.wb_rst(wb_rst),
+      .A_cyc_i(se_cyc),.A_stb_i(se_stb),.A_we_i(se_we),.A_sel_i(se_sel),
+      .A_adr_i(se_adr),.A_dat_i(se_dat_o),.A_dat_o(se_dat_i),.A_ack_o(se_ack),
+      .B_cyc_o(bridge_cyc),.B_stb_o(bridge_stb),.B_we_o(bridge_we),.B_sel_o(bridge_sel),
+      .B_adr_o(bridge_adr),.B_dat_o(bus2ram),.B_dat_i(ram2bus),.B_ack_i(bridge_ack));
+
+   wb_zbt16_b wb_zbt16_b
+     (.clk(wb_clk),.rst(wb_rst),
+      .wb_adr_i(wb_ram_adr),.wb_dat_i(bus2ram),.wb_dat_o(ram2bus),.wb_sel_i(bridge_sel),
+      .wb_cyc_i(bridge_cyc),.wb_stb_i(bridge_stb),.wb_ack_o(bridge_ack),.wb_we_i(bridge_we),
+      .sram_clk(RAM_CLK),.sram_a(RAM_A),.sram_d(RAM_D[15:0]),.sram_we(RAM_WEn),
+      .sram_bw(),.sram_adv(RAM_LDn),.sram_ce(RAM_CENn),.sram_oe(RAM_OEn),
+      .sram_mode(),.sram_zz() );
+
+   assign      RAM_CE1n = 0;
+   assign      RAM_D[17:16] = 2'bzz;
+   
+   // /////////////////////////////////////////////////////////////////////////
+   // VITA Timing
+
+   time_64bit #(.TICKS_PER_SEC(32'd100000000),.BASE(SR_TIME64)) time_64bit
+     (.clk(dsp_clk), .rst(dsp_rst), .set_stb(set_stb_dsp), .set_addr(set_addr_dsp), .set_data(set_data_dsp),
+      .pps(pps_in), .vita_time(vita_time), .pps_int(pps_int));
+   
+   // /////////////////////////////////////////////////////////////////////////////////////////
+   // Debug Pins
+
+   assign debug_clk[1:0] = 2'b00;
+   assign debug = 32'd0;
+   assign debug_gpio_0 = 32'd0;
+   assign debug_gpio_1 = 32'd0;
+   
+endmodule // u2_core
+
+   /*
+   // FIFO Level Debugging
+   reg [31:0]  host_to_dsp_fifo,dsp_to_host_fifo,eth_mac_debug,serdes_to_dsp_fifo,dsp_to_serdes_fifo;
+   
+   always @(posedge dsp_clk)
+     serdes_to_dsp_fifo <= { {ser_rx_full,ser_rx_empty,ser_rx_occ[13:0]},
+			     {dsp_tx_full,dsp_tx_empty,dsp_tx_occ[13:0]} };
+
+   always @(posedge dsp_clk)
+     dsp_to_serdes_fifo <= { {ser_tx_full,ser_tx_empty,ser_tx_occ[13:0]},
+			     {dsp_rx_full,dsp_rx_empty,dsp_rx_occ[13:0]} };
+   
+   always @(posedge dsp_clk)
+     host_to_dsp_fifo <= { {eth_rx_full,eth_rx_empty,eth_rx_occ[13:0]},
+			   {dsp_tx_full,dsp_tx_empty,dsp_tx_occ[13:0]} };
+   
+   always @(posedge dsp_clk)
+     dsp_to_host_fifo <= { {eth_tx_full,eth_tx_empty,eth_tx_occ[13:0]},
+			   {dsp_rx_full,dsp_rx_empty,dsp_rx_occ[13:0]} };
+   
+   always @(posedge dsp_clk)
+     eth_mac_debug <= { { 6'd0, GMII_TX_EN, GMII_RX_DV, debug_mac0[7:0]},
+			{eth_rx_full2, eth_rx_empty2, eth_rx_occ2[13:0]} };
+   
+   assign  debug_clk[0]  = GMII_RX_CLK; // wb_clk;
+   assign  debug_clk[1]  = dsp_clk;
+
+   wire        mdio_cpy  = MDIO;
+   assign  debug 	 = { { 1'b0, s6_stb, s6_ack, s6_we, s6_sel[3:0] },
+			     { s6_adr[15:8] },
+			     { s6_adr[7:0] },
+			     { 6'd0, mdio_cpy, MDC } };
+
+   assign debug 	 = { { GMII_TXD },
+			     { 5'd0, GMII_TX_EN, GMII_TX_ER, GMII_GTX_CLK },
+			     { wr2_flags, rd2_flags },
+			     { 4'd0, wr2_ready_i, wr2_ready_o, rd2_ready_i, rd2_ready_o } };
+   assign debug 	 = { { GMII_RXD },
+			     { 5'd0, GMII_RX_DV, GMII_RX_ER, GMII_RX_CLK },
+			     { wr2_flags, rd2_flags },
+			     { GMII_TX_EN,3'd0, wr2_ready_i, wr2_ready_o, rd2_ready_i, rd2_ready_o } };
+
+   assign debug = debug_udp;
+   assign debug = vrc_debug;
+   assign debug_gpio_0 = { {pps_in, pps_int, 2'd0, vita_state},
+			   {2'd0, rx_dst_rdy, rx_src_rdy, rx_data[99:96]},
+			   {run_rx_d1, run_rx, strobe_rx, overrun, wr1_flags[3:0]} , 
+			   {wr1_ready_i, wr1_ready_o, rx1_src_rdy, rx1_dst_rdy, rx1_data[35:32]}};
+
+   assign debug_gpio_1 = {vita_time[63:32] };
+   
+   assign debug_gpio_1 = { { tx_f19_data[15:8] },
+			   { tx_f19_data[7:0] },
+			   { 3'd0, tx_f19_src_rdy, tx_f19_dst_rdy, tx_f19_data[18:16] },
+			   { 2'b0, rd2_ready_i, rd2_ready_o, rd2_flags } };
+ */  
+   
+
+//   wire        debug_mux;
+//   setting_reg #(.my_addr(5)) sr_debug (.clk(wb_clk),.rst(wb_rst),.strobe(set_stb),.addr(set_addr),
+//					.in(set_data),.out(debug_mux),.changed());
+
+//assign     debug = debug_mux ? host_to_dsp_fifo : dsp_to_host_fifo;
+//assign     debug = debug_mux ? serdes_to_dsp_fifo : dsp_to_serdes_fifo;
+   
+//assign      debug = {{strobe_rx,/*adc_ovf_a*/ 1'b0,adc_a},
+//		{run_rx,/*adc_ovf_b*/ 1'b0,adc_b}};
+
+//assign      debug = debug_tx_dsp;
+//assign      debug = debug_serdes0;
+
+//assign      debug_gpio_0 = 0; //debug_serdes0;
+//assign      debug_gpio_1 = 0; //debug_serdes1;
+
+//   assign      debug={{3'b0, wb_clk, wb_rst, dsp_rst, por, config_success},
+//	      {8'b0},
+//      {3'b0,ram_loader_ack, ram_loader_stb, ram_loader_we,ram_loader_rst,ram_loader_done },
+//    {cpld_start,cpld_mode,cpld_done,cpld_din,cpld_clk,cpld_detached,cpld_misc,cpld_init_b} };
+
+//assign      debug = {dac_a,dac_b};
+
+/*
+ assign      debug = {{ram_loader_done, takeover, 6'd0},
+ {1'b0, cpld_start_int, cpld_mode_int, cpld_done_int, sd_clk, sd_csn, sd_miso, sd_mosi},
+ {8'd0},
+ {cpld_start, cpld_mode, cpld_done, cpld_din, cpld_misc, cpld_detached, cpld_clk, cpld_init_b}}; */
+
+/*assign      debug = host_to_dsp_fifo;
+ assign      debug_gpio_0 = eth_mac_debug;
+ assign      debug_gpio_1 = 0;
+ */
+// Assign various commonly used debug buses.
+/*
+ wire [31:0] debug_rx_1 = {uart_tx_o,GMII_TX_EN,strobe_rx,overrun,proc_int,buffer_int,timer_int,GMII_RX_DV,
+ irq[7:0],
+ GMII_RXD,
+ GMII_TXD};
+ 
+ wire [31:0] debug_rx_2 = { 5'd0, s8_we, s8_stb, s8_ack, debug_rx[23:0] };
+   
+   wire [31:0] debug_time =  {uart_tx_o, 7'b0,
+			      irq[7:0],
+			      6'b0, GMII_RX_DV, GMII_TX_EN,
+			      4'b0, exp_pps_in, exp_pps_out, pps_in, pps_int};
+
+   wire [31:0] debug_irq =  {uart_tx_o, iwb_adr, iwb_ack,
+			     irq[7:0],
+			     proc_int,  7'b0 };
+
+   wire [31:0] debug_eth = 
+	       {{uart_tx_o,proc_int,underrun,buffer_int,wr2_ready,wr2_error,wr2_done,wr2_write},
+		{8'd0},
+		{8'd0},
+		{GMII_TX_EN,GMII_RX_DV,Rx_mac_empty,Rx_mac_rd,Rx_mac_err,Rx_mac_sop,Rx_mac_eop,wr2_full} };
+
+   assign      debug_serdes0 = { { rd0_dat[7:0] },
+				 { ser_tx_clk, ser_tkmsb, ser_tklsb, rd0_sop, rd0_eop, rd0_read, rd0_error, rd0_done },
+				 { ser_t[15:8] },
+				 { ser_t[7:0] } };
+
+   assign      debug_serdes1 = { {1'b0,proc_int,underrun,buffer_int,wr0_ready,wr0_error,wr0_done,wr0_write},
+				 { 1'b0, ser_rx_clk, ser_rkmsb, ser_rklsb, ser_enable, ser_prbsen, ser_loopen, ser_rx_en },
+				 { ser_r[15:8] },
+				 { ser_r[7:0] } };
+       
+   assign      debug_gpio_1 = {uart_tx_o,7'd0,
+			       3'd0,rd1_sop,rd1_eop,rd1_read,rd1_done,rd1_error,
+			       debug_txc[15:0]};
+   assign      debug_gpio_1 = debug_rx;
+   assign      debug_gpio_1 = debug_serdes1;
+   assign      debug_gpio_1 = debug_eth;
+      
+    */
+      
diff --git a/usrp2/top/u2_rev3/Makefile b/usrp2/top/u2_rev3/Makefile
index af93700c5..541f3264f 100644
--- a/usrp2/top/u2_rev3/Makefile
+++ b/usrp2/top/u2_rev3/Makefile
@@ -66,6 +66,7 @@ control_lib/mux4.v \
 control_lib/mux8.v \
 control_lib/nsgpio.v \
 control_lib/ram_2port.v \
+control_lib/ram_harvard.v \
 control_lib/ram_harv_cache.v \
 control_lib/ram_loader.v \
 control_lib/setting_reg.v \
@@ -193,6 +194,8 @@ timing/time_64bit.v \
 timing/time_compare.v \
 timing/time_receiver.v \
 timing/time_sender.v \
+timing/time_sync.v \
+timing/timer.v \
 timing/simple_timer.v \
 top/u2_core/u2_core.v \
 top/u2_rev3/u2_rev3.ucf \
diff --git a/usrp2/top/u2_rev3/Makefile.udp b/usrp2/top/u2_rev3/Makefile.udp
new file mode 100644
index 000000000..fa94c7bd1
--- /dev/null
+++ b/usrp2/top/u2_rev3/Makefile.udp
@@ -0,0 +1,268 @@
+#
+# Copyright 2008 Ettus Research LLC
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio 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, or (at your option)
+# any later version.
+# 
+# GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+
+##################################################
+# xtclsh Shell and tcl Script Path
+##################################################
+#XTCLSH := /opt/Xilinx/10.1/ISE/bin/lin/xtclsh
+XTCLSH := xtclsh
+ISE_HELPER := ../tcl/ise_helper.tcl
+
+##################################################
+# Project Setup
+##################################################
+BUILD_DIR := build-udp/
+export TOP_MODULE := u2_rev3
+export PROJ_FILE := $(BUILD_DIR)$(TOP_MODULE).ise
+
+##################################################
+# Project Properties
+##################################################
+export PROJECT_PROPERTIES := \
+family Spartan3 \
+device xc3s2000 \
+package fg456 \
+speed -5 \
+top_level_module_type "HDL" \
+synthesis_tool "XST (VHDL/Verilog)" \
+simulator "ISE Simulator (VHDL/Verilog)" \
+"Preferred Language" "Verilog" \
+"Enable Message Filtering" FALSE \
+"Display Incremental Messages" FALSE 
+
+##################################################
+# Sources
+##################################################
+export SOURCE_ROOT := ../../../
+export SOURCES := \
+control_lib/CRC16_D16.v \
+control_lib/atr_controller.v \
+control_lib/bin2gray.v \
+control_lib/dcache.v \
+control_lib/decoder_3_8.v \
+control_lib/dpram32.v \
+control_lib/gray2bin.v \
+control_lib/gray_send.v \
+control_lib/icache.v \
+control_lib/mux4.v \
+control_lib/mux8.v \
+control_lib/nsgpio.v \
+control_lib/ram_2port.v \
+control_lib/ram_harvard.v \
+control_lib/ram_harv_cache.v \
+control_lib/ram_loader.v \
+control_lib/setting_reg.v \
+control_lib/settings_bus.v \
+control_lib/settings_bus_crossclock.v \
+control_lib/srl.v \
+control_lib/system_control.v \
+control_lib/wb_1master.v \
+control_lib/wb_readback_mux.v \
+control_lib/simple_uart.v \
+control_lib/simple_uart_tx.v \
+control_lib/simple_uart_rx.v \
+control_lib/oneshot_2clk.v \
+control_lib/sd_spi.v \
+control_lib/sd_spi_wb.v \
+control_lib/wb_bridge_16_32.v \
+control_lib/reset_sync.v \
+control_lib/priority_enc.v \
+control_lib/pic.v \
+vrt/vita_rx_control.v \
+vrt/vita_rx_framer.v \
+vrt/vita_tx_control.v \
+vrt/vita_tx_deframer.v \
+udp/udp_wrapper.v \
+udp/fifo19_rxrealign.v \
+udp/prot_eng_tx.v \
+udp/add_onescomp.v \
+simple_gemac/simple_gemac_wrapper.v \
+simple_gemac/simple_gemac_wrapper19.v \
+simple_gemac/simple_gemac.v \
+simple_gemac/simple_gemac_wb.v \
+simple_gemac/simple_gemac_tx.v \
+simple_gemac/simple_gemac_rx.v \
+simple_gemac/crc.v \
+simple_gemac/delay_line.v \
+simple_gemac/flow_ctrl_tx.v \
+simple_gemac/flow_ctrl_rx.v \
+simple_gemac/address_filter.v \
+simple_gemac/ll8_to_txmac.v \
+simple_gemac/rxmac_to_ll8.v \
+simple_gemac/miim/eth_miim.v \
+simple_gemac/miim/eth_clockgen.v \
+simple_gemac/miim/eth_outputcontrol.v \
+simple_gemac/miim/eth_shiftreg.v \
+control_lib/newfifo/buffer_int.v \
+control_lib/newfifo/buffer_pool.v \
+control_lib/newfifo/fifo_2clock.v \
+control_lib/newfifo/fifo_2clock_cascade.v \
+control_lib/newfifo/ll8_shortfifo.v \
+control_lib/newfifo/fifo_short.v \
+control_lib/newfifo/fifo_long.v \
+control_lib/newfifo/fifo_cascade.v \
+control_lib/newfifo/fifo36_to_ll8.v \
+control_lib/newfifo/ll8_to_fifo36.v \
+control_lib/newfifo/fifo19_to_ll8.v \
+control_lib/newfifo/ll8_to_fifo19.v \
+control_lib/newfifo/fifo36_to_fifo19.v \
+control_lib/newfifo/fifo19_to_fifo36.v \
+control_lib/longfifo.v \
+control_lib/shortfifo.v \
+control_lib/medfifo.v \
+coregen/fifo_xlnx_2Kx36_2clk.v \
+coregen/fifo_xlnx_2Kx36_2clk.xco \
+coregen/fifo_xlnx_512x36_2clk.v \
+coregen/fifo_xlnx_512x36_2clk.xco \
+coregen/fifo_xlnx_64x36_2clk.v \
+coregen/fifo_xlnx_64x36_2clk.xco \
+coregen/fifo_xlnx_16x19_2clk.v \
+coregen/fifo_xlnx_16x19_2clk.xco \
+coregen/fifo_xlnx_16x40_2clk.v \
+coregen/fifo_xlnx_16x40_2clk.xco \
+extram/wb_zbt16_b.v \
+opencores/8b10b/decode_8b10b.v \
+opencores/8b10b/encode_8b10b.v \
+opencores/aemb/rtl/verilog/aeMB_bpcu.v \
+opencores/aemb/rtl/verilog/aeMB_core_BE.v \
+opencores/aemb/rtl/verilog/aeMB_ctrl.v \
+opencores/aemb/rtl/verilog/aeMB_edk32.v \
+opencores/aemb/rtl/verilog/aeMB_ibuf.v \
+opencores/aemb/rtl/verilog/aeMB_regf.v \
+opencores/aemb/rtl/verilog/aeMB_xecu.v \
+opencores/i2c/rtl/verilog/i2c_master_bit_ctrl.v \
+opencores/i2c/rtl/verilog/i2c_master_byte_ctrl.v \
+opencores/i2c/rtl/verilog/i2c_master_defines.v \
+opencores/i2c/rtl/verilog/i2c_master_top.v \
+opencores/i2c/rtl/verilog/timescale.v \
+opencores/spi/rtl/verilog/spi_clgen.v \
+opencores/spi/rtl/verilog/spi_defines.v \
+opencores/spi/rtl/verilog/spi_shift.v \
+opencores/spi/rtl/verilog/spi_top.v \
+opencores/spi/rtl/verilog/timescale.v \
+sdr_lib/acc.v \
+sdr_lib/add2.v \
+sdr_lib/add2_and_round.v \
+sdr_lib/add2_and_round_reg.v \
+sdr_lib/add2_reg.v \
+sdr_lib/cic_dec_shifter.v \
+sdr_lib/cic_decim.v \
+sdr_lib/cic_int_shifter.v \
+sdr_lib/cic_interp.v \
+sdr_lib/cic_strober.v \
+sdr_lib/clip.v \
+sdr_lib/clip_reg.v \
+sdr_lib/cordic.v \
+sdr_lib/cordic_z24.v \
+sdr_lib/cordic_stage.v \
+sdr_lib/dsp_core_rx_udp.v \
+sdr_lib/dsp_core_tx.v \
+sdr_lib/hb_dec.v \
+sdr_lib/hb_interp.v \
+sdr_lib/round.v \
+sdr_lib/round_reg.v \
+sdr_lib/rx_control.v \
+sdr_lib/rx_dcoffset.v \
+sdr_lib/sign_extend.v \
+sdr_lib/small_hb_dec.v \
+sdr_lib/small_hb_int.v \
+sdr_lib/tx_control.v \
+serdes/serdes.v \
+serdes/serdes_fc_rx.v \
+serdes/serdes_fc_tx.v \
+serdes/serdes_rx.v \
+serdes/serdes_tx.v \
+timing/time_64bit.v \
+timing/time_compare.v \
+timing/time_receiver.v \
+timing/time_sender.v \
+timing/time_sync.v \
+timing/timer.v \
+timing/simple_timer.v \
+top/u2_core/u2_core_udp.v \
+top/u2_rev3/u2_rev3.ucf \
+top/u2_rev3/u2_rev3.v 
+
+##################################################
+# Process Properties
+##################################################
+export SYNTHESIZE_PROPERTIES := \
+"Number of Clock Buffers" 8 \
+"Pack I/O Registers into IOBs" Yes \
+"Optimization Effort" High \
+"Optimize Instantiated Primitives" TRUE \
+"Register Balancing" Yes \
+"Use Clock Enable" Auto \
+"Use Synchronous Reset" Auto \
+"Use Synchronous Set" Auto
+
+export TRANSLATE_PROPERTIES := \
+"Macro Search Path" "$(shell pwd)/../../coregen/"
+
+export MAP_PROPERTIES := \
+"Allow Logic Optimization Across Hierarchy" TRUE \
+"Map to Input Functions" 4 \
+"Optimization Strategy (Cover Mode)" Speed \
+"Pack I/O Registers/Latches into IOBs" "For Inputs and Outputs" \
+"Perform Timing-Driven Packing and Placement" TRUE \
+"Map Effort Level" High \
+"Extra Effort" Normal \
+"Combinatorial Logic Optimization" TRUE \
+"Register Duplication" TRUE
+
+export PLACE_ROUTE_PROPERTIES := \
+"Place & Route Effort Level (Overall)" High 
+
+export STATIC_TIMING_PROPERTIES := \
+"Number of Paths in Error/Verbose Report" 10 \
+"Report Type" "Error Report"
+
+export GEN_PROG_FILE_PROPERTIES := \
+"Configuration Rate" 6 \
+"Create Binary Configuration File" TRUE \
+"Done (Output Events)" 5 \
+"Enable Bitstream Compression" TRUE \
+"Enable Outputs (Output Events)" 6 
+
+export SIM_MODEL_PROPERTIES := ""
+
+##################################################
+# Make Options
+##################################################
+all:
+	@echo make proj, check, synth, bin, or clean
+
+proj:
+	PROCESS_RUN="" $(XTCLSH) $(ISE_HELPER)	
+
+check:
+	PROCESS_RUN="Check Syntax" $(XTCLSH) $(ISE_HELPER)	
+
+synth:
+	PROCESS_RUN="Synthesize - XST" $(XTCLSH) $(ISE_HELPER)	
+
+bin:
+	PROCESS_RUN="Generate Programming File" $(XTCLSH) $(ISE_HELPER)		
+
+clean:
+	rm -rf $(BUILD_DIR)
+
+