Add nandgame files

need/want systemverilog

1 files changed, 58 insertions, 0 deletions

diff --git a/nandgame/logic_unit_tb.sv b/nandgame/logic_unit_tb.sv
new file mode 100644
index 0000000..c1495c3
--- /dev/null
+++ b/nandgame/logic_unit_tb.sv
@@ -0,0 +1,58 @@
+`timescale 1us/1us
+
+`include "nandgame_types.v"
+
+module logic_unit_tb (
+);
+
+logic [15:0] in1;
+logic [15:0] in2;
+LogicCode opcode;
+logic [15:0] result;
+
+logic_unit uut (
+  .X(in1),
+  .Y(in2),
+  .operation(opcode),
+  .RES(result)
+);
+
+string filename;
+initial begin
+`ifdef DUMP_FILE_NAME
+  filename=`DUMP_FILE_NAME;
+`else
+  filename="logic_unit.lxt2";
+`endif
+  $dumpfile(filename); $dumpvars();
+
+end
+
+initial begin
+  in1 = 16'b1010;
+  in2 = 16'b1100;
+  opcode = LOGIC_AND;
+  #1
+  assert(result == 16'b1000);
+  #1
+  in1 = 16'b1010;
+  in2 = 16'b1100;
+  opcode = LOGIC_OR;
+  #1
+  assert(result == 16'b1110);
+  #1
+  in1 = 16'b1010;
+  in2 = 16'b1100;
+  opcode = LOGIC_XOR;
+  #1
+  assert(result == 16'b0110);
+  #1
+  in1 = 16'b1010101010101010;
+  opcode = LOGIC_NEGT;
+  #1
+  assert(result == 16'b0101010101010101);
+  #1
+  $finish();
+end
+
+endmodule