Boots straight to Centipede attract mode -- the demo game plays itself on the mushroom field. The trackball is mapped to the on-screen D-pad (and the arrow keys); Fire is Space (or Ctrl), insert a coin with 5 (or C) and start with 1. Click the screen first so it captures the keyboard. Open the debugger to single-step the 6502, read and write registers and memory, watch the playfield and motion-object RAM, and set breakpoints and write watchpoints. A sibling config boots Millipede (1982) on the same core.

Boots straight to Centipede attract mode -- the demo game plays itself on the mushroom field. The trackball is mapped to the on-screen D-pad (and the arrow keys); Fire is Space (or Ctrl), insert a coin with 5 (or C) and start with 1. Click the screen first so it captures the keyboard. Open the debugger to single-step the 6502, read and write registers and memory, watch the playfield and motion-object RAM, and set breakpoints and write watchpoints. A sibling config boots Millipede (1982) on the same core.