It's working now😀! I have also implemented Dmux4way and Dmux8way chips. Thanks for being there always.
However, One thing is to get it working, another thing is to have a very clear understanding of what I have done. A real practical understanding. The whole process of how to build the chips in hdl to implement a certain chip is still not completely clear to me. So, if you could help refer me to some resources to deepen my understanding , I would appreciate.
Thanks a lot once again.