Mouser

PCB

• 

Reference

Clocks

• 
  Main CPU
• 
  Sub CPU
• 
  A-Y-8910
• 
  Sub CPU NMI
• 
  H-sync
• 
  V-sync
• 
  Sync output

Custom IC

• 
  Die shot
• 
  Schematic of custom IC

Credits

• PCB picture from Porchy