simple cross

cgroup3.sv

+`timescale 1ps/1ps
+
+module TB_CG2(
+);
+
+reg clk, rst;
+reg [1:0] A, B;
+
+covergroup cg @(posedge clk);
+  pb1: coverpoint A;
+  pb2: coverpoint B;
+  pb1x2: cross A,B;
+endgroup
+
+cg cg_inst;
+
+initial begin
+  clk = 0;
+end
+
+always #5 clk = ~clk;
+
+initial begin
+  cg_inst = new();
+
+  rst = 1;
+  A = 0; B = 0;
+  #10
+
+  rst = 0;
+  #10
+
+  A = 0; B = 2;
+  #10
+
+  A = 1; B = 3;
+  #10
+
+  A = 3; B = 1;
+  #10
+
+  wait (clk);
+
+  $display("%3.2f %%: Coverage (instance)", cg_inst.get_inst_coverage());
+  $display("%3.2f %%: Coverage (pb1)", cg_inst.pb1.get_coverage());
+  $display("%3.2f %%: Coverage (pb2)", cg_inst.pb2.get_coverage());
+  $display("%3.2f %%: Coverage (cross pb1,pb2)", cg_inst.pb1x2.get_coverage());
+
+  $stop;
+
+
+end
+  
+endmodule
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