diff --git a/compiler/res/prog8lib/cx16/diskio.p8 b/compiler/res/prog8lib/cx16/diskio.p8
index 50e02442a..cd67b944f 100644
--- a/compiler/res/prog8lib/cx16/diskio.p8
+++ b/compiler/res/prog8lib/cx16/diskio.p8
@@ -4,12 +4,16 @@
 ; NOTE: If you experience weird behavior with these routines and you are using them
 ;       in the X16 emulator using HostFs, please try again with an SD-card image instead first.
 ;       It is possible that there are still small differences between HostFS and actual CBM DOS in the emulator.
-;
+
 ; About the secondary addresses:
 ; for writes (new files or overwrites), you can use 1 (without the mode string) or 2-14 (with the mode string)
 ; for reads (existing files) you can use 0 or 2-14 (mode string is optional)
 ; for modify mode (new files* or existing files), you must use 2-14, and the mode string ,s,m is required
 
+; About the Dos/Drive error status message:
+; The routines don't usually read/clear the dos/drive error status and message. ("blinking red led")
+; In case of an error, you usually have to read/clear that yourself (with status() for example).
+
 
 %import textio
 %import conv
@@ -980,6 +984,7 @@ io_error:
     sub exists(str filename) -> bool {
         ; -- returns true if the given file exists on the disk, otherwise false
         ;    DON'T use this if you already have a file open with f_open!
+        ;    NOTE: doesn't clear the dos error status and message, you'll have to read/clear that yourself (with status() for example)
         if f_open(filename) {
             f_close()
             return true
diff --git a/compiler/res/prog8lib/cx16/syslib.p8 b/compiler/res/prog8lib/cx16/syslib.p8
index e8f676cb5..19552a2f0 100644
--- a/compiler/res/prog8lib/cx16/syslib.p8
+++ b/compiler/res/prog8lib/cx16/syslib.p8
@@ -558,6 +558,7 @@ const ubyte  EXTAPI_mouse_set_position = $0C
 const ubyte  EXTAPI_scnsiz = $0D
 const ubyte  EXTAPI_kbd_leds = $0E
 const ubyte  EXTAPI_memory_decompress_from_func = $0F
+const ubyte  EXTAPI_default_palette = $10
 
 ; extapi16 call numbers
 const ubyte  EXTAPI16_test = $00
@@ -668,6 +669,13 @@ asmsub scnsiz(ubyte width @X, ubyte heigth @Y) clobbers(A,X,Y) {
     }}
 }
 
+asmsub memory_decompress_from_func(uword datafunction @R4, uword output @R1)  clobbers(A,X,Y) -> uword @R1  {
+    %asm {{
+        lda  #EXTAPI_memory_decompress_from_func
+        jmp  cx16.extapi
+    }}
+}
+
 asmsub get_charset() -> ubyte @A {
     ;Get charset mode.  result: 0=unknown, 1=ISO, 2=PETSCII upper case/gfx, 3=PETSCII lowercase.
     %asm {{
diff --git a/compiler/res/prog8lib/shared_cbm_diskio.p8 b/compiler/res/prog8lib/shared_cbm_diskio.p8
index 7ff85284e..2100b3183 100644
--- a/compiler/res/prog8lib/shared_cbm_diskio.p8
+++ b/compiler/res/prog8lib/shared_cbm_diskio.p8
@@ -1,5 +1,10 @@
 ; shared CBM (C64/C128) disk drive I/O routines.
 
+; About the Dos/Drive error status message:
+; The routines don't usually read/clear the dos/drive error status and message. ("blinking red led")
+; In case of an error, you usually have to read/clear that yourself (with status() for example).
+
+
 %import textio
 %import conv
 %import strings
@@ -679,6 +684,7 @@ io_error:
     sub exists(str filename) -> bool {
         ; -- returns true if the given file exists on the disk, otherwise false
         ;    DON'T use this if you already have a file open with f_open!
+        ;    NOTE: doesn't clear the dos error status and message, you'll have to read/clear that yourself (with status() for example)
         if f_open(filename) {
             f_close()
             return true