more work towards Mega65 native mode, added NSYS command

src/kernal/screen/chrout_screen.s

@@ -10,6 +10,13 @@
 
 chrout_screen:
 
+#if ROM_LAYOUT_M65
+
+	jsr M65_ISMODE65
+	beq_16 m65_chrout_screen
+
+#endif
+
 	jsr cursor_hide_if_visible
 
 	lda SCHAR

src/kernal/screen/screen_off.s

@@ -8,7 +8,7 @@
 //
 
 
-#if ((CONFIG_TAPE_NORMAL || CONFIG_TAPE_TURBO) && !CONFIG_MB_MEGA_65) || (CONFIG_IEC_JIFFYDOS && !CONFIG_MEMORY_MODEL_60K)
+#if ((CONFIG_TAPE_NORMAL || CONFIG_TAPE_TURBO)) || (CONFIG_IEC_JIFFYDOS && !CONFIG_MEMORY_MODEL_60K)
 
 
 screen_off: