Tic Tac Toe

1
Tic Tac Toe

• ECE551, Final Project
• Eric Harrah
• Adam Miller

2
System Requirements

• A Tic Tac Toe game
• One Player or Two Player mode
• Test mode and Reset mode
• 9 bits of input
• 6 to set position in 3x3 matrix
• 2 Mode switches
• 1 Push button is used
• 20 bits of output
• 18 bits for the LED Array
• 1 Error LED output bit
• 1 bit to light the win LED

3
Flow Chart
4
Player Module

• Acquires the input
• waits for the pushbutton to be hit
• sends the 6 bits for the position and the 2 bits
  for the mode to the main module

5
Analysis of Input Module

• Inputs 6 bit position and 2 bit mode, plus 18
  bits from LED Array
• Checks for legal move
• if legal, sets bits output based on mode
• if illegal move, sends error

6
AI module

• Input Change
• Logic Order
• Check for winning move
• Check for losing move
• Preset move

7
Output Module

• Checks mode
• in test mode, outputs test input
• 1 player mode
• checks for win by player - output
• checks for win by AI - output
• if win set win LED
• 2 player mode
• check for win by either player

8
Simulation of Output
9
Other Modules

• Main
• Responsible for passing data
• Reset
• Clock Divide
• Test

10
Conclusions

• VHDL
• Setup Time
• Modularity