Atari 2600 / F12
BEING VERIFIEDMid-Scanline Collision Timing Critical for Death Detection
- STATUS
- BEING VERIFIED
- AREA
- Timing / bus
- RECORDED
- 2026-04-06
- PUBLIC SOURCE
- Research dossier / finding 12
- RECORD ID
atari2600-f12- SNAPSHOT
a58ea4ac37c644e9
Game: Pac-Man (NA) Symptom: Ghosts never kill Pac-Man, can't eat frightened ghosts, even though CXPPMM=$80 at end of frame. Root Cause: Pac-Man reads CXPPMM at $F5D9 during the display kernel, right after writing GRP0 for the current ghost.
Raw traces, ROM material, local paths, and personal data are not part of this public record.
01INPUT IDhash receipt
02BYTE MAPdecode coverage
03CPU STATEtrace comparison
04BUS / TIMEordered effects
05OUTPUTvisual · audio · input
06ARTIFACTbuild identity