"Real life" responsibilities be damned, 5 months away from A8 coding is enough. Work resumes! The video needs annotations, but it is late.

Basic explanation:

• GTIA mode 9 bitmap
  
• Narrow playfield
  
• DLI every 3 mode lines
  
• Players 0 and 1 in quad width, black mask the borders
  
• Players 2 and 3 in single width are the "bats"
  
• Missile 0 and 1 are not used
  
• Missile 2 is the net
  
• Missile 3 is the ball
  
• $800 bytes screen RAM
  
• 64*64 independently addressable pixels
  
• Score will go from 0 to 9
  
• Score is blitted and ORed with background in VBI
  
• Paddles are read in VBI
  
• Ball animation is a simple loop just to show motion
  
• No game logic, collision detection or sound yet
  

The video shows some of the tricks used. I move the player masks, turn off the DLIs, turn off GTIA mode. Nothing spectacular yet.