diff --git a/libsrc/c64/soft80_cgetc.s b/libsrc/c64/soft80_cgetc.s
index 12b2071a2..a8c52c1a2 100644
--- a/libsrc/c64/soft80_cgetc.s
+++ b/libsrc/c64/soft80_cgetc.s
@@ -3,7 +3,7 @@
 ;
 
         .export         soft80_cgetc
-        .import         cursor          ; FIX/CHECK
+        .import         cursor
         .import         soft80_putcolor
 
         .include        "c64.inc"
diff --git a/libsrc/c64/soft80_color.s b/libsrc/c64/soft80_color.s
index c176eca7f..8475cc05c 100644
--- a/libsrc/c64/soft80_color.s
+++ b/libsrc/c64/soft80_color.s
@@ -5,7 +5,7 @@
 ;
 
         .export         soft80_textcolor, soft80_bgcolor, soft80_bordercolor
-        .export         __textcolor,__bgcolor   ; CHECK/FIX
+        .export         __textcolor, __bgcolor
 
         .importzp       tmp1,tmp2
 
@@ -89,7 +89,6 @@ soft80_bordercolor:
         txa
         rts
 
-        ; FIXME: shouldnt they be in zeropage?
         .bss
 __textcolor:
         .res 1
diff --git a/libsrc/c64/soft80_cputc.s b/libsrc/c64/soft80_cputc.s
index d4c7e3050..590e16740 100644
--- a/libsrc/c64/soft80_cputc.s
+++ b/libsrc/c64/soft80_cputc.s
@@ -11,7 +11,7 @@
         .import         popa, _gotoxy
         .import         xsize
         .import         soft80_kplot
-        .import         __bgcolor               ; FIX/CHECK
+        .import         __bgcolor
 
         .importzp       tmp4,tmp3
 
diff --git a/libsrc/c64/soft80_kclrscr.s b/libsrc/c64/soft80_kclrscr.s
index e801c9398..ff1a14a07 100644
--- a/libsrc/c64/soft80_kclrscr.s
+++ b/libsrc/c64/soft80_kclrscr.s
@@ -1,7 +1,7 @@
 
         .export         soft80_kclrscr
         .import         soft80_kplot
-        .import         __bgcolor        ; FIX/CHECK
+        .import         __bgcolor
 
         .include        "c64.inc"
         .include        "soft80.inc"
diff --git a/libsrc/c64/soft80_kplot.s b/libsrc/c64/soft80_kplot.s
index a813fd679..884404b5f 100644
--- a/libsrc/c64/soft80_kplot.s
+++ b/libsrc/c64/soft80_kplot.s
@@ -18,7 +18,8 @@ soft80_kplot:
 
         ; calc pointer to vram
         tya
-        lsr     a
+        lsr     a               ; NOTE: we can save 2 cycles here at the expense of
+                                ;       making the tables twice as big (+50 bytes)
         clc
         adc     _vramlo,x
         sta     CRAM_PTR