diff --git a/util/list_yet_unsupported_chips.sh b/util/list_yet_unsupported_chips.sh
new file mode 100755
index 0000000..3a4d1b8
--- /dev/null
+++ b/util/list_yet_unsupported_chips.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+scriptname=$(readlink -f "$0") 2>/dev/null
+path=$(dirname "$scriptname")/.. 2>/dev/null
+if [ ! -e "$path/flashchips.c" -o ! -e "$path/flashchips.h" ]; then
+	echo "Warning: could not calculate flashchips.[ch]'s directory. Trying current..."
+	path="."
+	if [ ! -e "$path/flashchips.c" -o ! -e "$path/flashchips.h" ]; then
+		echo "Nope, sorry!"
+		exit 1
+	fi
+fi
+
+chips=$(sed -re '/#define [A-Z]/ !d' -e '/_ID\s/d' -e 's/\s*#define\s+([[:alnum:]_]+)\s+.*/\1/' "$path/flashchips.h")
+for c in $chips ; do
+	if ! grep "$c" "$path/flashchips.c" >/dev/null ; then
+		if [ -n "$1" ]; then
+			grep -o "$c.*" "$path/flashchips.h"
+		else
+			echo "$c"
+		fi
+	fi
+done