diff --git a/libsrc/geos/devel/crt0.s b/libsrc/geos/devel/crt0.s
index 76e9c8ef6..091b76edd 100644
--- a/libsrc/geos/devel/crt0.s
+++ b/libsrc/geos/devel/crt0.s
@@ -7,9 +7,8 @@
 
 	.import		__RAM_START__, __RAM_SIZE__	; Linker generated
 	.import		initlib, donelib
-       	.import	       	pushax
 	.import		callmain
-	.import		_MainLoop, _EnterDeskTop
+	.import		_EnterDeskTop
 	.import		zerobss
 	.importzp	sp
 	.export		_exit
@@ -44,8 +43,7 @@
 	cli
        	jsr    	callmain
 
-; Call module destructors. This is also the _exit entry which must be called
-; explicitly by the code.
+; Call module destructors.
 
 _exit:	jsr	donelib	 	; Run module destructors
 
diff --git a/libsrc/geos/devel/extzp.s b/libsrc/geos/devel/extzp.s
index 0ed898c11..aee4aa82f 100644
--- a/libsrc/geos/devel/extzp.s
+++ b/libsrc/geos/devel/extzp.s
@@ -10,8 +10,8 @@
 
 .segment "EXTZP", zeropage
 
-cursor_x:	.res 2		; Cursor column (word)
-cursor_y:	.res 1		; Cursor row
+cursor_x:	.res 2		; Cursor column (0-319/639)
+cursor_y:	.res 1		; Cursor row    (0-199)
 cursor_flag:	.res 1		; Cursor on/off (0-off)
 
 cursor_c:	.res 1		; Cursor column (0-39/79)