VHDL: Need to keep track of a count inside two separate processes

[jerryt]

I am working on a tic tac toe design for a class project.

I have one VHDL process running to keep track of anytime the player makes a move.
I have another VHDL process running to keep track of anytime the machine makes a move.

I need to be able to keep track of how many moves are made total. The maximum amount of moves in a tictactoe game is 9 moves. If 9 moves are made I need to enable an LED to tell the player and machine that the game ended in a DRAW (meaning nobody one that game).

Should I create a signal in my design and each time a move is made increment it by one? Then I could have a separate process specifically for figuring out if 9 moves were made or not and if so I would enable the LED.

Any suggestions? I really appreciate everyones help.

 

[TrickyDicky]

you will need 2 signals. Player_move and machine_move. you use either of these to increment the "moves" counter

 

[jerryt]

Thanks Tricky - Why couldn't I just use one signal for both of the processes?

 

[TrickyDicky]

signals can only be assigned in 1 process, otherwise you get a multiple source drive error.
You can read a signal in many processes however.