Format top tb and add vga image buffer reset task

tbench/ahblite_sys_tb.sv

@@ -1,31 +1,32 @@
 `timescale 1ns/1ps
-module ahblite_sys_tb(
+module ahblite_sys_tb();
-
-);
-
   reg RESET, CLK;
   wire [7:0] LED;
-
   AHBLITE_SYS dut(.CLK(CLK), .RESET(RESET), .LED(LED));
-
   // Note: you can modify this to give a 50MHz clock or whatever is appropriate
 
-initial
+  task resetVgaImageBuffers;
-begin
+    for (int i = 0; i < (2**dut.uAHBVGA.uvga_image.uimage_ram.ADDR_WIDTH)-1; i++) begin
+      dut.uAHBVGA.uvga_image.uimage_ram.ram[i] = '0;
+    end
+    for (int i = 0; i < (2**dut.uAHBVGA2.uvga_image.uimage_ram.ADDR_WIDTH)-1; i++) begin
+      dut.uAHBVGA2.uvga_image.uimage_ram.ram[i] = '0;
+    end
+  endtask
+
+  initial begin
     CLK=0;
-   forever
+    forever begin
-   begin
       #5 CLK=1;
       #5 CLK=0;
     end
   end
 
-initial
+  initial begin
-begin
+    resetVgaImageBuffers();
     RESET=0;
     #30 RESET=1;
     #20 RESET=0;
   end
-
 endmodule