-COMMAND_ENABLE = yes # Commands for debug and configuration
-SLEEP_LED_ENABLE = yes # Breathing sleep LED during USB suspend
-NKRO_ENABLE = yes # USB Nkey Rollover(+500)
-#PS2_MOUSE_ENABLE = yes # PS/2 mouse(TrackPoint) support
+#COMMAND_ENABLE = yes # Commands for debug and configuration
+#SLEEP_LED_ENABLE = yes # Breathing sleep LED during USB suspend
+#NKRO_ENABLE = yes # USB Nkey Rollover(+500)
+
+PS2_MOUSE_ENABLE = yes # PS/2 mouse(TrackPoint) support
+PS2_USE_BUSYWAIT = yes # uses primitive reference code
+#PS2_USE_INT = yes # uses external interrupt for falling edge of PS/2 clock pin
+#PS2_USE_USART = yes # uses hardware USART engine for PS/2 signal receive(recomened)