diff --git a/libsrc/atari/graphuse.s b/libsrc/atari/graphuse.s
new file mode 100644
index 000000000..d8ceb6885
--- /dev/null
+++ b/libsrc/atari/graphuse.s
@@ -0,0 +1,12 @@
+;
+; Christian Groessler, June 2000
+;
+; this file provides the default for the __graphmode_used variable
+
+	.export	__graphmode_used
+
+	.data
+
+__graphmode_used:
+	.byte	9		; mode with max. memory usage
+