more work towards Mega65 native mode, added NSYS command

src/basic/engine_editor/tokenise_line.s

@@ -98,6 +98,18 @@ tokenise_line_loop:
 	jsr tk_search
 	bcc tokenise_line_keyword_02                 // branch if keyword identified
 
+#endif
+
+#if ROM_LAYOUT_M65
+
+	lda #<packed_freq_keywords_03
+	sta FRESPC+0
+	lda #>packed_freq_keywords_03
+	sta FRESPC+1
+
+	jsr tk_search
+	bcc tokenise_line_keyword_03                 // branch if keyword identified
+
 #endif
 
 	// Shorten packed keyword candidate and try again
@@ -173,6 +185,19 @@ tokenise_line_char:
 
 // Support for extended keyword lists
 
+#if ROM_LAYOUT_M65
+
+tokenise_line_keyword_03:
+
+	// Store the token list index
+
+	lda #$03
+	skip_2_bytes_trash_nvz
+
+	// FALLTROUGH
+
+#endif
+
 #if !HAS_SMALL_BASIC
 
 tokenise_line_keyword_02: