diff --git a/test/gen_config.py b/test/gen_config.py
index 298e774..9bb51cf 100755
--- a/test/gen_config.py
+++ b/test/gen_config.py
@@ -42,26 +42,43 @@ modules = [
 data_widths = [32]
 bist_lengths = [1, 1024, 8192]
 bist_randoms = [False]
+access_patterns = ['access_pattern.csv']
 
 def main():
     parser = argparse.ArgumentParser(description='Generate configuration for all possible argument combinations.',
                                      formatter_class=argparse.ArgumentDefaultsHelpFormatter)
-    parser.add_argument('--sdram-modules',     nargs='+', default=modules,      help='--sdram-module options')
-    parser.add_argument('--sdram-data-widths', nargs='+', default=data_widths,  help='--sdram-data-width options')
-    parser.add_argument('--bist-lengths',      nargs='+', default=bist_lengths, help='--bist-length options')
-    parser.add_argument('--bist-randoms',      nargs='+', default=bist_randoms, help='--bist-random options')
-    parser.add_argument('--name-format',                  default='test_%d',    help='Name format for i-th test')
+    parser.add_argument('--sdram-modules',     nargs='+', default=modules,         help='--sdram-module options')
+    parser.add_argument('--sdram-data-widths', nargs='+', default=data_widths,     help='--sdram-data-width options')
+    parser.add_argument('--bist-lengths',      nargs='+', default=bist_lengths,    help='--bist-length options')
+    parser.add_argument('--bist-randoms',      nargs='+', default=bist_randoms,    help='--bist-random options')
+    parser.add_argument('--access-patterns',   nargs='+', default=access_patterns, help='--access-pattern options')
+    parser.add_argument('--name-format',                  default='test_%d',       help='Name format for i-th test')
     args = parser.parse_args()
 
-    product = itertools.product(args.sdram_modules, args.sdram_data_widths, args.bist_lengths, args.bist_randoms)
+    bist_product = itertools.product(args.sdram_modules, args.sdram_data_widths, args.bist_lengths, args.bist_randoms)
+    pattern_product = itertools.product(args.sdram_modules, args.sdram_data_widths, args.access_patterns)
+
+    i = 0
     configurations = {}
-    for i, (module, data_width, bist_length, bist_random) in enumerate(product):
+    for module, data_width, bist_length, bist_random in bist_product:
         configurations[args.name_format % i] = {
             'sdram_module':     module,
             'sdram_data_width': data_width,
-            'bist_length':      bist_length,
-            'bist_random':      bist_random,
+            'access_pattern': {
+                'bist_length':  bist_length,
+                'bist_random':  bist_random,
+            }
         }
+        i += 1
+    for module, data_width, access_pattern in pattern_product:
+        configurations[args.name_format % i] = {
+            'sdram_module':     module,
+            'sdram_data_width': data_width,
+            'access_pattern': {
+                'pattern_file': access_pattern,
+            }
+        }
+        i += 1
 
     json_str = json.dumps(configurations, indent=4)
     print(json_str)