Squashed B200 FPGA Source. Code from Josh Blum, Ian Buckley, and Matt Ettus.

Original-commit: 0df4b801a34697f2058b4a7b95e08d2a0576c9db

top/b200/catcap_tb.v

@@ -0,0 +1,109 @@
+`timescale 1ns/1ps
+
+module catcap_tb();
+
+   wire GSR, GTS;
+   glbl glbl( );
+
+   reg 	clk    = 0;
+   reg 	ddrclk = 0;
+   reg 	reset  = 1;
+
+   always #100 clk = ~clk;
+   always @(negedge clk) ddrclk <= ~ddrclk;
+
+   initial $dumpfile("catcap_tb.vcd");
+   initial $dumpvars(0,catcap_tb);
+
+   wire [11:0] i0 = {4'hA,count};
+   wire [11:0] q0 = {4'hB,count};
+   wire [11:0] i1 = {4'hC,count};
+   wire [11:0] q1 = {4'hD,count};
+
+   reg 	       mimo;
+   reg [11:0]  pins;
+   reg 	       frame;
+   reg [7:0]   count;
+   
+   initial
+     begin
+	#1000 reset = 0;
+	MIMO_BURST(4);
+	MIMO_BURST(5);
+	BURST(4);
+	BURST(5);
+	#2000;
+	$finish;
+     end
+   
+   task BURST;
+      input [7:0] len;
+      begin
+	 frame <= 0;
+	 @(posedge clk);
+	 @(posedge clk);
+	 mimo <= 0;
+	 @(posedge clk);
+	 @(posedge clk);
+	 @(posedge clk);
+	 @(posedge ddrclk);
+	 count <= 0;
+	 repeat(len)
+	   begin
+	      @(posedge clk);
+	      pins <= i0;
+	      frame <= 1;
+	      @(posedge clk);
+	      pins <= q0;
+	      frame <= 0;
+	      count <= count + 1;
+	   end
+      end
+   endtask // BURST
+   
+   task MIMO_BURST;
+      input [7:0] len;
+      begin
+	 frame <= 0;
+	 @(posedge clk);
+	 @(posedge clk);
+	 mimo <= 1;
+	 @(posedge clk);
+	 @(posedge clk);
+	 @(posedge clk);
+	 @(posedge ddrclk);
+	 count <= 0;
+	 repeat(len)
+	   begin
+	      @(posedge clk);
+	      pins <= i0;
+	      frame <= 1;
+	      @(posedge clk);
+	      pins <= q0;
+	      @(posedge clk);
+	      pins <= i1;
+	      frame <= 0;
+	      @(posedge clk);
+	      pins <= q1;
+	      count <= count + 1;
+	   end
+	 @(posedge clk);
+	 @(posedge clk);
+      end
+   endtask // MIMO_BURST
+      
+   wire        rx_clk, rx_strobe;
+   wire [11:0] i0o,i1o,q0o,q1o;
+   
+   catcap_ddr_cmos catcap
+     (.data_clk(ddrclk),
+      .reset(reset),
+      .mimo(mimo),
+      .rx_frame(frame),
+      .rx_d(pins),
+      .rx_clk(rx_clk),
+      .rx_strobe(rx_strobe),
+      .i0(i0o),.q0(q0o),
+      .i1(i1o),.q1(q1o));
+   
+endmodule // hb_chain_tb