Pushing the bulk of UHD-3.7.0 code.

Original-commit: ff1546f8137f7f92bb250f685561b0c34cc0e053

top/x300/gen_ddrlvds_tb.v

@@ -0,0 +1,70 @@
+`timescale 1ns/1ps
+
+module gen_ddrlvds_tb();
+
+   wire GSR, GTS;
+   glbl glbl( );
+
+   reg clk    = 1;
+   reg reset  = 1;
+   reg tx_strobe = 0;
+   
+   always #100 clk = ~clk;
+   always #200 tx_strobe = ~tx_strobe;
+   
+   
+   initial $dumpfile("gen_ddrlvds_tb.vcd");
+   initial $dumpvars(0,gen_ddrlvds_tb);
+
+   wire [7:0] pins_p, pins_n;
+   wire       frame_p, frame_n;
+   wire       clk_p, clk_n;
+      
+   reg [7:0]  count;
+   
+   wire [15:0] i = {4'hA,count};
+   wire [15:0] q = {4'hB,count};
+
+   initial
+     begin
+	#10000 reset = 0;
+	BURST(4);
+	BURST(5);
+	#2000;
+	$finish;
+     end
+   
+   task BURST;
+      input [7:0] len;
+
+      begin
+//	 tx_strobe <= 0;
+	 count <= 0;
+	 @(posedge clk);
+	 @(posedge clk);
+	 repeat(len)
+	   begin
+	  //    tx_strobe <= 1;
+	      @(posedge clk);
+	  //    tx_strobe <= 0;
+	      @(posedge clk);
+	      count <= count + 1;
+	   end
+//	 tx_strobe <= 0;
+	 @(posedge clk);
+	 @(posedge clk);
+	 @(posedge clk);
+      end
+   endtask // BURST
+   
+   gen_ddrlvds gen_ddrlvds
+     (.rst(reset),
+      .tx_clk_p(clk_p), .tx_clk_n(clk_n),
+      .tx_frame_p(frame_p), .tx_frame_n(frame_n),
+      .tx_d_p(pins_p), .tx_d_n(pins_n),
+      .tx_clk(clk), .tx_strobe(tx_strobe),
+      .i(i), .q(q)
+      );
+   
+      
+endmodule // gen_ddrlvds_tb