--- ../SrcShared/EmScreen.cpp.orig	Fri Mar 30 07:45:11 2001
+++ ../SrcShared/EmScreen.cpp	Fri Mar 30 07:50:48 2001
@@ -181,6 +181,14 @@
 	}
 }
 
+Bool EmScreen::IsDirty ()
+{
+    if ( gScreenDirtyLow >= gScreenDirtyHigh )
+    {
+        return false;
+    }
+    return true;
+}
 
 /***********************************************************************
  *