From c33d1df5f95b1baadee66aa464d6af4a2c849966 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joachim=20Stro=CC=88mbergson?= <joachim@secworks.se>
Date: Sun, 16 Mar 2014 21:46:10 +0100
Subject: Adding self resetting init and next flags. Updating TBs to not reset
 the flags. Fixing clock parameter naming.

---
 src/tb/tb_sha256.v      | 11 ++++++-----
 src/tb/tb_sha256_core.v | 15 +++++++--------
 2 files changed, 13 insertions(+), 13 deletions(-)

(limited to 'src/tb')

diff --git a/src/tb/tb_sha256.v b/src/tb/tb_sha256.v
index 69f2186..72e7d21 100644
--- a/src/tb/tb_sha256.v
+++ b/src/tb/tb_sha256.v
@@ -53,6 +53,7 @@ module tb_sha256();
   parameter DEBUG = 0;
 
   parameter CLK_HALF_PERIOD = 2;
+  parameter CLK_PERIOD = 2 * CLK_HALF_PERIOD;
 
   // The address map.
   parameter ADDR_NAME0       = 8'h00;
@@ -297,7 +298,7 @@ module tb_sha256();
       tb_write_data = word;
       tb_cs = 1;
       tb_we = 1;
-      #(2 * CLK_HALF_PERIOD);
+      #(CLK_PERIOD);
       tb_cs = 0;
       tb_we = 0;
     end
@@ -343,7 +344,7 @@ module tb_sha256();
       tb_address = address;
       tb_cs = 1;
       tb_we = 0;
-      #(2 * CLK_HALF_PERIOD);
+      #(CLK_PERIOD);
       read_data = tb_read_data;
       tb_cs = 0;
 
@@ -424,7 +425,7 @@ module tb_sha256();
      
       write_block(block);
       write_word(ADDR_CTRL, CTRL_INIT_VALUE);
-      write_word(ADDR_CTRL, 8'h00);
+      #(CLK_PERIOD);
       wait_ready();
       read_digest();
 
@@ -463,7 +464,7 @@ module tb_sha256();
       // First block
       write_block(block0);
       write_word(ADDR_CTRL, CTRL_INIT_VALUE);
-      write_word(ADDR_CTRL, 8'h00);
+      #(CLK_PERIOD);
       wait_ready();
       read_digest();
 
@@ -482,7 +483,7 @@ module tb_sha256();
       // Final block
       write_block(block1);
       write_word(ADDR_CTRL, CTRL_NEXT_VALUE);
-      write_word(ADDR_CTRL, 8'h00);
+      #(CLK_PERIOD);
       wait_ready();
       read_digest();
       
diff --git a/src/tb/tb_sha256_core.v b/src/tb/tb_sha256_core.v
index 2f2a288..df0cafc 100644
--- a/src/tb/tb_sha256_core.v
+++ b/src/tb/tb_sha256_core.v
@@ -6,7 +6,8 @@
 //
 //
 // Author: Joachim Strombergson
-// Copyright (c) 2014 SUNET
+// Copyright (c) 2014, SUNET
+// All rights reserved.
 // 
 // Redistribution and use in source and binary forms, with or 
 // without modification, are permitted provided that the following 
@@ -52,6 +53,7 @@ module tb_sha256_core();
   parameter DEBUG = 0;
 
   parameter CLK_HALF_PERIOD = 2;
+  parameter CLK_PERIOD = 2 * CLK_HALF_PERIOD;
   
   
   //----------------------------------------------------------------
@@ -243,7 +245,7 @@ module tb_sha256_core();
     begin
       while (!tb_ready)
         begin
-          #(2 * CLK_HALF_PERIOD);
+          #(CLK_PERIOD);
         end
     end
   endtask // wait_ready
@@ -263,8 +265,7 @@ module tb_sha256_core();
 
      tb_block = block;
      tb_init = 1;
-     #(2 * CLK_HALF_PERIOD);
-     tb_init = 0;
+     #(CLK_PERIOD);
      wait_ready();
 
       
@@ -308,8 +309,7 @@ module tb_sha256_core();
      $display("*** TC %0d first block started.", tc_number);
      tb_block = block1;
      tb_init = 1;
-     #(2 * CLK_HALF_PERIOD);
-     tb_init = 0;
+     #(CLK_PERIOD);
      wait_ready();
      db_digest1 = tb_digest;
      $display("*** TC %0d first block done.", tc_number);
@@ -317,8 +317,7 @@ module tb_sha256_core();
      $display("*** TC %0d second block started.", tc_number);
      tb_block = block2;
      tb_next = 1;
-     #(2 * CLK_HALF_PERIOD);
-     tb_next = 0;
+     #(CLK_PERIOD);
      wait_ready();
      $display("*** TC %0d second block done.", tc_number);
       
-- 
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