1 files changed, 58 insertions(+), 0 deletions(-)

A testbench/tb_ram.sv

@@ 0,0 1,58 @@
+import cpu_types::*;
+
+module tb_ram();
+
+  reg clk;
+
+  reg [31:0] a;
+
+  wire [31:0] rd;
+
+  memory_mask_t mask;
+
+  reg         we;
+  reg [31:0]  wd;
+
+  ram uut(
+    .clk(clk),
+    .a(a),
+    .rd(rd),
+    .mask(mask),
+    .we(we),
+    .wd(wd)
+  );
+
+  initial begin
+    clk = 0;
+    forever #5 clk = ~clk;
+  end
+
+  initial begin
+    $dumpfile("waves/tb_ram.vcd");
+    $dumpvars;
+
+    #10
+    a = 32'd103;
+    mask = MEM_WORD;
+    we = 1;
+    wd = 32'h5;
+
+    #10
+    a = 32'd107;
+    we = 1;
+    wd = 32'h1;
+
+    #10
+    wd = 32'h0;
+    we = 0;
+    a = 32'd103;
+
+    #10
+    we = 0;
+    a = 32'd107;
+
+    #10 $finish;
+  end
+
+
+endmodule