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ECE 223 Lab 3 Electronic Ping Pong Game

• Fall 2007
• David Li
• d4li_at_engmail.uwaterloo
• EIT 3148 x37434

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Outline

• Functionality
• Behaviour
• Things to Consider
• Deliverables Demo and Report
• Questions

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Functionality

• Electronic Ping Pong Game
• Two Players (Left Right)
• Display the ball position
• Score Keeping
• Selection of clock speed
• Indication of service light
• Game ends when a player scores 7 points

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Functionality

• Default service goes to the right player
• LPAD or RPAD must be pressed when the ball
  position (i.e.) is at the leftmost or rightmost
  position
• A point is scored when the player hits the ball
  too early or late
• Player who won the point gets the next service
• The score is only displayed when the game is not
  in play (i.e. Left or right service state or game
  over)

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Behaviour
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Behaviour
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Behaviour
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Things to Consider

• Divide the internal clock accordingly to get the
  appropriate frequency
• Design the state machine
• Minimize the number of states
• Determine appropriate inputs/outputs for state
  transition
• Work with state diagram or transition table
• Ball movement, reset, score display, and clock
  divider are not part of state machine

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Things to Consider

• Ball Movement
• Implemented using shift register
• Two control signals Direction Mode
• Ball Movement
• Counters are required to keep track of score

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Deliverables - Report

• Lab Submission Form Report Title Page
• Formal Specifications of the Problem
• VHDL Code (Appendix)
• Simulation Waveforms and Command Files (Appendix)
• Analysis in Maximum TWO pages
• Problems Encountered
• Debugging Approach
• Improvements

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Marking Scheme