diff --git a/include/c128.h b/include/c128.h
index 85782aef3..ebb367e3b 100644
--- a/include/c128.h
+++ b/include/c128.h
@@ -46,6 +46,7 @@
 
 
 /* Additional key defines */
+#define CH_ESC                  27
 #define CH_F1			133
 #define CH_F2			137
 #define CH_F3			134
diff --git a/include/cbm.h b/include/cbm.h
index ba831dd54..12753deb1 100644
--- a/include/cbm.h
+++ b/include/cbm.h
@@ -104,8 +104,8 @@ extern unsigned char _filetype;         /* Default 'u' */
 #define CH_PI			126
 #define CH_DEL			 20
 #define CH_INS			148
-#define CH_ESC			 95
 #define CH_ENTER                '\n'
+#define CH_STOP                   3
 
 
 
diff --git a/include/cbm264.h b/include/cbm264.h
index 25d8e84da..a9125d5d5 100644
--- a/include/cbm264.h
+++ b/include/cbm264.h
@@ -46,6 +46,7 @@
 
 
 /* Additional key defines */
+#define CH_ESC                  27
 #define CH_F1  			133
 #define CH_F2  			137
 #define CH_F3  			134
@@ -113,4 +114,4 @@
 
 
 
-                
+
diff --git a/include/cbm510.h b/include/cbm510.h
index 9f03f1217..078557f94 100644
--- a/include/cbm510.h
+++ b/include/cbm510.h
@@ -46,6 +46,7 @@
 
 
 /* Additional key defines */
+#define CH_ESC                  27
 #define CH_F1			224
 #define CH_F2			225
 #define CH_F3			226
diff --git a/include/cbm610.h b/include/cbm610.h
index 723d87699..8f9e78c6a 100644
--- a/include/cbm610.h
+++ b/include/cbm610.h
@@ -46,6 +46,7 @@
 
 
 /* Additional key defines */
+#define CH_ESC                  27
 #define CH_F1			224
 #define CH_F2			225
 #define CH_F3			226
diff --git a/include/pet.h b/include/pet.h
index 684d20f81..ccc31432f 100644
--- a/include/pet.h
+++ b/include/pet.h
@@ -6,7 +6,7 @@
 /*                                                                           */
 /*                                                                           */
 /*                                                                           */
-/* (C) 1998-2001 Ullrich von Bassewitz                                       */
+/* (C) 1998-2002 Ullrich von Bassewitz                                       */
 /*               Wacholderweg 14                                             */
 /*               D-70597 Stuttgart                                           */
 /* EMail:        uz@musoftware.de                                            */
@@ -45,6 +45,9 @@
 
 
 
+/* Additional key defines */
+#define CH_ESC                  27
+
 /* Color defines */
 #define COLOR_BLACK  	       	0x00
 #define COLOR_WHITE  	       	0x01
diff --git a/libsrc/dbg/dbg.c b/libsrc/dbg/dbg.c
index c285027d4..a929bddcf 100644
--- a/libsrc/dbg/dbg.c
+++ b/libsrc/dbg/dbg.c
@@ -465,6 +465,24 @@ static void AnyKeyPrompt (void)
 
 
 
+static char IsAbortKey (char C)
+/* Return true if C is an abort key */
+{
+#if defined(CH_ESC)
+    if (C == CH_ESC) {
+        return 1;
+    }
+#endif
+#if defined(CH_STOP) 
+    if (C == CH_STOP) {
+        return 1;
+    }
+#endif
+    return 0;
+}
+
+
+
 static char Input (char* Prompt, char* Buf, unsigned char Count)
 /* Read input from the user, return 1 on success, 0 if aborted */
 {
@@ -503,8 +521,8 @@ static char Input (char* Prompt, char* Buf, unsigned char Count)
 	} else if (c == '\n') {
 	    Buf [i] = '\0';
 	    done = 1;
-	} else if (c == CH_ESC) {
-	    /* Abort */
+	} else if (IsAbortKey (c)) {
+	    /* Abort */          
 	    done = 2;
 	}
     } while (!done);
@@ -1500,4 +1518,4 @@ void DbgEntry (void)
 }
 
 
-    
+