Write VHDL programme; please help

[naavid]

Can you please help me to write VHDL program for the ones-counting state machine as described by the following state table

C D Q QN
1 0 0 1
1 1 1 0
0 X last Q last QN

Many thanks,

 

[rca]

You table is the true table of a flop. Many example could be found with google, too basic to be in forum.