create symbol files for existing elements

2022-03-10 16:52:46 +08:00
--- a/ALU_parallel_8b/adder_parallel_8b.qsf
+++ b/ALU_parallel_8b/adder_parallel_8b.qsf
@@ -83,4 +83,5 @@ set_location_assignment PIN_208 -to M
 set_location_assignment PIN_23 -to S0
 set_location_assignment PIN_24 -to S1
 set_location_assignment PIN_27 -to S2
-set_location_assignment PIN_28 -to S3
+set_location_assignment PIN_28 -to S3
+set_global_assignment -name RESERVE_ALL_UNUSED_PINS_NO_OUTPUT_GND "AS INPUT TRI-STATED"