diff --git a/include/atmos.h b/include/atmos.h
index c7a5e82d1..489268e70 100644
--- a/include/atmos.h
+++ b/include/atmos.h
@@ -6,7 +6,11 @@
 /*                                                                           */
 /*                                                                           */
 /*                                                                           */
-/* (C) 2002  Debrune Jérome, <jede@oric.org>		                     */
+/* (C) 2002      Debrune Jérome, <jede@oric.org>		             */
+/* (C) 2003      Ullrich von Bassewitz                                       */
+/*               Roemerstrasse 52                                            */
+/*               D-70794 Filderstadt                                         */
+/* EMail:        uz@cc65.org                                                 */
 /*                                                                           */
 /*                                                                           */
 /* This software is provided 'as-is', without any expressed or implied       */
@@ -52,6 +56,19 @@
 #define COLOR_CYAN 	0x06
 #define COLOR_WHITE 	0x07
 
+/* Character codes */
+#define CH_ULCORNER 	'+'
+#define CH_URCORNER 	'+'
+#define CH_LLCORNER 	'+'
+#define CH_LRCORNER 	'+'
+#define CH_TTEE     	'+'
+#define CH_BTEE     	'+'
+#define CH_LTEE     	'+'
+#define CH_RTEE     	'+'
+#define CH_CROSS    	'+'
+
+
+
 
 
 /* End of atmos.h */
diff --git a/include/conio.h b/include/conio.h
index 71bd74023..cd6c65e9f 100644
--- a/include/conio.h
+++ b/include/conio.h
@@ -65,12 +65,14 @@
 #  include <apple2.h>
 #elif defined(__ATARI__) && !defined(_ATARI_H)
 #  include <atari.h>
+#elif defined(__ATMOS__) && !defined(_ATMOS_H)
+#  include <atmos.h>
 #endif
 
 
 
 /*****************************************************************************/
-/* 	      			   Functions	     			     */
+/*   	      			   Functions	     			     */
 /*****************************************************************************/