Add a simple test case

We use 2 32bit RAMs, so we need to split the test case into
two files.

scripts/bin2hex-split.py

@@ -0,0 +1,24 @@
+#!/usr/bin/python3
+
+import sys
+import subprocess
+import struct
+
+even = open('even.hex', 'w')
+odd = open('odd.hex', 'w')
+
+with open(sys.argv[1], "rb") as f:
+        while True:
+            even_word = f.read(4)
+            if len(even_word) == 0:
+                exit(0)
+            if len(even_word) != 4:
+                raise Exception("Bad length")
+            even.write("%08x\n" % struct.unpack('<I', even_word));
+
+            odd_word = f.read(4)
+            if len(odd_word) == 0:
+                exit(0)
+            if len(odd_word) != 4:
+                raise Exception("Bad length")
+            odd.write("%08x\n" % struct.unpack('<I', odd_word));