+diff -up /home/blp/cs140/bochs-2.2.6/bochs.h\~ /home/blp/cs140/bochs-2.2.6/bochs.h
+--- bochs-2.2.6/bochs.h.orig 2006-01-28 08:16:02.000000000 -0800
++++ bochs-2.2.6/bochs.h 2006-04-03 14:03:54.000000000 -0700
+@@ -698,4 +698,6 @@ int bx_init_hardware ();
+
+ #endif
+
++extern int jitter;
++
+ #endif /* BX_BOCHS_H */