From 13d94613fb0577ea21895e8def6a6f5480c1a991 Mon Sep 17 00:00:00 2001
From: uvok
Date: Mon, 29 Dec 2025 14:08:02 +0100
Subject: fifo: r/w/address logic

---
 fifo.tb.v | 41 ++++++++++++++++++++++++++++++++++++++---
 1 file changed, 38 insertions(+), 3 deletions(-)

(limited to 'fifo.tb.v')

diff --git a/fifo.tb.v b/fifo.tb.v
index b948cf1..6556eca 100644
--- a/fifo.tb.v
+++ b/fifo.tb.v
@@ -6,9 +6,18 @@ module fifo_tb (
 reg clk_i;
 reg rst_i;
 
-fifo uut(
+reg read_i, write_i;
+reg [7:0] data_i;
+
+fifo #(
+  .DATA_WIDTH(8),
+  .DATA_DEPTH(8)
+) uut(
   .clk_i(clk_i),
-  .rst_i(rst_i)
+  .rst_i(rst_i),
+  .write_i(write_i),
+  .read_i(read_i),
+  .data_i
 );
 
 string filename;
@@ -21,12 +30,38 @@ initial begin
   $dumpfile(filename); $dumpvars();
   clk_i <= 0;
   rst_i <= 1'b1;
-
+  read_i = 0;
+  write_i = 0;
+  data_i = 0;
 end
 
 always #10 clk_i = ~clk_i;
 
 initial begin
+  #10
+
+  for (integer run = 0; run < 2; run++) begin
+  
+    write_i = 1;
+    for (integer addr = 0; addr < 10; addr++) begin
+
+      data_i = addr + run;
+      #20
+      ;
+    end
+
+    write_i = 0;
+    read_i = 1;
+
+    for (integer addr = 0; addr < 10; addr++) begin
+      #20
+      ;
+    end
+
+    read_i = 0;
+    #20
+    ;
+  end
   #100
   $finish();
 end
-- 
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