diff --git a/libsrc/runtime/incsp3.s b/libsrc/runtime/incsp3.s
index 90dca0b96..6c91bfceb 100644
--- a/libsrc/runtime/incsp3.s
+++ b/libsrc/runtime/incsp3.s
@@ -1,20 +1,23 @@
 ;
-; Ullrich von Bassewitz, 25.10.2000
+; Ullrich von Bassewitz, 2003-05-04
 ;
 ; CC65 runtime: Increment the stackpointer by 3
 ;
 
        	.export		incsp3
-	.import		addysp
+        .importzp       sp
 
 .proc	incsp3
 
-	ldy	#3
-	jmp	addysp
+        lda     sp
+        clc
+        adc     #3
+        sta     sp
+        bcs     @L1
+        rts
+
+@L1:    inc     sp+1
+        rts
 
 .endproc
 
-
-
-
-	
diff --git a/libsrc/runtime/incsp4.s b/libsrc/runtime/incsp4.s
index 125c533e7..0d320fdf2 100644
--- a/libsrc/runtime/incsp4.s
+++ b/libsrc/runtime/incsp4.s
@@ -1,20 +1,23 @@
 ;
-; Ullrich von Bassewitz, 25.10.2000
+; Ullrich von Bassewitz, 2003-05-04
 ;
 ; CC65 runtime: Increment the stackpointer by 4
 ;
 
        	.export		incsp4
-	.import		addysp
+        .importzp       sp
 
 .proc	incsp4
 
-	ldy   	#4
-	jmp   	addysp
+        lda     sp
+        clc
+        adc     #4
+        sta     sp
+        bcs     @L1
+        rts
+
+@L1:    inc     sp+1
+        rts
 
 .endproc
 
-
-
-
-	
diff --git a/libsrc/runtime/incsp5.s b/libsrc/runtime/incsp5.s
index df239cf21..963c0b3aa 100644
--- a/libsrc/runtime/incsp5.s
+++ b/libsrc/runtime/incsp5.s
@@ -1,20 +1,24 @@
 ;
-; Ullrich von Bassewitz, 25.10.2000
+; Ullrich von Bassewitz, 2003-05-04
 ;
 ; CC65 runtime: Increment the stackpointer by 5
 ;
 
        	.export		incsp5
-	.import		addysp
+        .importzp       sp
 
 .proc	incsp5
 
-	ldy   	#5
-	jmp   	addysp
+        lda     sp
+        clc
+        adc     #5
+        sta     sp
+        bcs     @L1
+        rts
+
+@L1:    inc     sp+1
+        rts
 
 .endproc
 
-
-
-
-	
+                  
diff --git a/libsrc/runtime/incsp6.s b/libsrc/runtime/incsp6.s
index a7ab932dd..5221138fc 100644
--- a/libsrc/runtime/incsp6.s
+++ b/libsrc/runtime/incsp6.s
@@ -1,20 +1,24 @@
 ;
-; Ullrich von Bassewitz, 25.10.2000
+; Ullrich von Bassewitz, 2003-05-04
 ;
 ; CC65 runtime: Increment the stackpointer by 6
 ;
 
        	.export		incsp6
-	.import		addysp
+        .importzp       sp
 
 .proc	incsp6
 
-	ldy   	#6
-	jmp   	addysp
+        lda     sp
+        clc
+        adc     #6
+        sta     sp
+        bcs     @L1
+        rts
+
+@L1:    inc     sp+1
+        rts
 
 .endproc
 
-
-
-
-	
+              
diff --git a/libsrc/runtime/incsp7.s b/libsrc/runtime/incsp7.s
index 417700fe9..48fc91a69 100644
--- a/libsrc/runtime/incsp7.s
+++ b/libsrc/runtime/incsp7.s
@@ -1,20 +1,24 @@
 ;
-; Ullrich von Bassewitz, 25.10.2000
+; Ullrich von Bassewitz, 2003-05-04
 ;
 ; CC65 runtime: Increment the stackpointer by 7
 ;
 
        	.export		incsp7
-	.import		addysp
+        .importzp       sp
 
 .proc	incsp7
 
-	ldy   	#7
-	jmp   	addysp
+        lda     sp
+        clc
+        adc     #7
+        sta     sp
+        bcs     @L1
+        rts
+
+@L1:    inc     sp+1
+        rts
 
 .endproc
 
-
-
-
-	
+                  
diff --git a/libsrc/runtime/incsp8.s b/libsrc/runtime/incsp8.s
index 3ec15202e..9baf5185c 100644
--- a/libsrc/runtime/incsp8.s
+++ b/libsrc/runtime/incsp8.s
@@ -1,17 +1,24 @@
 ;
-; Ullrich von Bassewitz, 25.10.2000
+; Ullrich von Bassewitz, 2003-05-04
 ;
 ; CC65 runtime: Increment the stackpointer by 8
 ;
 
        	.export		incsp8
-	.import		addysp
+        .importzp       sp
 
 .proc	incsp8
 
-	ldy   	#8
-	jmp   	addysp
+        lda     sp
+        clc
+        adc     #8
+        sta     sp
+        bcs     @L1
+        rts
+
+@L1:    inc     sp+1
+        rts
 
 .endproc
 
-
+