diff --git a/libsrc/c128/kernal.s b/libsrc/c128/kernal.s
index 138473218..47e80c559 100644
--- a/libsrc/c128/kernal.s
+++ b/libsrc/c128/kernal.s
@@ -46,7 +46,9 @@
         .export         CKOUT
         .export         CLRCH
         .export         BASIN
+        .export         CHRIN
         .export         BSOUT
+        .export         CHROUT
         .export         LOAD
         .export         SAVE
         .export         SETTIM
diff --git a/libsrc/c16/kernal.s b/libsrc/c16/kernal.s
index 15ce35772..5f70123a2 100644
--- a/libsrc/c16/kernal.s
+++ b/libsrc/c16/kernal.s
@@ -35,7 +35,9 @@
         .export         CKOUT
         .export         CLRCH
         .export         BASIN
+        .export         CHRIN
         .export         BSOUT
+        .export         CHROUT
         .export         LOAD
         .export         SAVE
         .export         SETTIM
diff --git a/libsrc/c64/kernal.s b/libsrc/c64/kernal.s
index 771872082..cf5511ce8 100644
--- a/libsrc/c64/kernal.s
+++ b/libsrc/c64/kernal.s
@@ -38,7 +38,9 @@
         .export         CKOUT
         .export         CLRCH
         .export         BASIN
+        .export         CHRIN
         .export         BSOUT
+        .export         CHROUT
         .export         LOAD
         .export         SAVE
         .export         SETTIM
diff --git a/libsrc/cbm510/kernal.s b/libsrc/cbm510/kernal.s
index 7908c40ec..705422709 100644
--- a/libsrc/cbm510/kernal.s
+++ b/libsrc/cbm510/kernal.s
@@ -28,7 +28,9 @@
         .export         CKOUT
         .export         CLRCH
         .export         BASIN
+        .export         CHRIN
         .export         BSOUT
+        .export         CHROUT
         .export         LOAD
         .export         SAVE
         .export         STOP
diff --git a/libsrc/cbm610/kernal.s b/libsrc/cbm610/kernal.s
index 921bf524e..30156e79c 100644
--- a/libsrc/cbm610/kernal.s
+++ b/libsrc/cbm610/kernal.s
@@ -28,7 +28,9 @@
         .export         CKOUT
         .export         CLRCH
         .export         BASIN
+        .export         CHRIN
         .export         BSOUT
+        .export         CHROUT
         .export         LOAD
         .export         SAVE
         .export         STOP
diff --git a/libsrc/pet/kbsout.s b/libsrc/pet/kbsout.s
index 178ac8205..8b21378af 100644
--- a/libsrc/pet/kbsout.s
+++ b/libsrc/pet/kbsout.s
@@ -1,17 +1,20 @@
 ;
 ; Ullrich von Bassewitz, 19.11.2002
 ;
-; BSOUT replacement function for the PETs
+; BSOUT/CHROUT replacement function for the PETs
 ;
 
         .export         BSOUT
+        .export         CHROUT
+
         .import         checkst
 
 
 .proc   BSOUT
 
-        jsr     $FFD2           ; Call kernal function
+        jsr     $FFD2           ; Call Kernal function
         jmp     checkst         ; Check status, return carry on error
 
 .endproc
 
+CHROUT  :=      BSOUT
diff --git a/libsrc/pet/kernal.s b/libsrc/pet/kernal.s
index ba66c4653..fc8d62c4a 100644
--- a/libsrc/pet/kernal.s
+++ b/libsrc/pet/kernal.s
@@ -8,6 +8,7 @@
 
         .export         CLRCH
         .export         BASIN
+        .export         CHRIN
         .export         STOP
         .export         GETIN
         .export         CLALL
diff --git a/libsrc/plus4/kbasin.s b/libsrc/plus4/kbasin.s
index 507043866..3bbee9f74 100644
--- a/libsrc/plus4/kbasin.s
+++ b/libsrc/plus4/kbasin.s
@@ -1,10 +1,11 @@
 ;
 ; Ullrich von Bassewitz, 22.11.2002
 ;
-; BASIN replacement function
+; BASIN/CHRIN replacement function
 ;
-             
+
         .export         BASIN
+        .export         CHRIN
 
         .include        "plus4.inc"
 
@@ -17,4 +18,4 @@
         rts                             ; Return to caller
 .endproc
 
-
+CHRIN   :=      BASIN
diff --git a/libsrc/plus4/kbsout.s b/libsrc/plus4/kbsout.s
index a86a334b2..8b6df19ff 100644
--- a/libsrc/plus4/kbsout.s
+++ b/libsrc/plus4/kbsout.s
@@ -1,10 +1,11 @@
 ;
 ; Ullrich von Bassewitz, 22.11.2002
 ;
-; BSOUT replacement function
+; BSOUT/CHROUT replacement function
 ;
 
         .export         BSOUT
+        .export         CHROUT
 
         .include        "plus4.inc"
 
@@ -17,4 +18,4 @@
         rts                             ; Return to caller
 .endproc
 
-
+CHROUT  :=      BSOUT
diff --git a/libsrc/vic20/kernal.s b/libsrc/vic20/kernal.s
index 94a5ec1a4..7c54b205f 100644
--- a/libsrc/vic20/kernal.s
+++ b/libsrc/vic20/kernal.s
@@ -36,7 +36,9 @@
         .export         CKOUT
         .export         CLRCH
         .export         BASIN
+        .export         CHRIN
         .export         BSOUT
+        .export         CHROUT
         .export         LOAD
         .export         SAVE
         .export         SETTIM