add two more pins for shifter 8b

shifter_8b/shifter_8b.qsf

@@ -75,4 +75,6 @@ set_location_assignment PIN_147 -to Y5
 set_location_assignment PIN_149 -to Y6
 set_location_assignment PIN_150 -to Y7
 set_global_assignment -name MISC_FILE "D:/projects/quartus/shifter_8b/shifter_8b.dpf"
-set_global_assignment -name RESERVE_ALL_UNUSED_PINS_NO_OUTPUT_GND "AS INPUT TRI-STATED"
+set_global_assignment -name RESERVE_ALL_UNUSED_PINS_NO_OUTPUT_GND "AS INPUT TRI-STATED"
+set_location_assignment PIN_70 -to R
+set_location_assignment PIN_72 -to L