CASE Statements
1) Constant (1’b1) in Case Expression [4:2 PRIORITY ENCODER]
2) IF-ELSE [4:2 PRIORITY ENCODER]
3) CASEX [4:2 PRIORITY ENCODER]
4) CASEZ [4:2 PRIORITY ENCODER]
5) CASEX [2:4 PRIORITY ENCODER] Order of Case items does not Matter
6) CASEX [4:2 PRIORITY ENCODER] Order of Case items does not matter
7) CASEZ [Over lapping case items] Order of case items Matter!
8) PARALLEL CASE [case items order does not matter]
9) PARALLEL CASE [Order does not matter]