logical line growth adaptation

c64/kernal/screen/e8ea.screen_scroll_up.s

@@ -56,12 +56,10 @@ screen_scroll_up_delay_done:
 	lda #$80
 	sta LDTBL+24
 
-	// Preserve SAL and EAL
+	// Preserve SAL and EAL, prepare initial SAL/EAL/PNT/USER values
 
 	jsr screen_preserve_sal_eal
 
-	// Now, we need to scroll both screen memory and color memory; first create start/end pointers
-
 	lda HIBASE
 	sta SAL+1
 	sta EAL+1