added rom image extract dd script

diff --git a/tools/test-image/dd-img.sh b/tools/test-image/dd-img.sh
new file mode 100755 (executable)
index 0000000..72dd1aa
--- /dev/null
+++ b/tools/test-image/dd-img.sh
@@ -0,0 +1,4 @@
+#!/bin/bash -x
+
+dd if=sample1.nes of=sample1.hex bs=16 skip=1 count=2048
+