Atari 2600 / F229
BEING VERIFIEDROR MUST SNAPSHOT OLD CARRY BEFORE WRITING NEW CARRY
- STATUS
- BEING VERIFIED
- AREA
- Recompiler
- RECORDED
- 2026-07-15
- PUBLIC SOURCE
- Research dossier / finding 229
- RECORD ID
atari2600-f229- SNAPSHOT
d8dcf6d8dd492341
HYPOTHESIS: ROR copies old carry into result bit 7, copies old operand bit 0 to new carry, masks to one byte, and derives N/Z from the result. The carry-in and carry-out roles require the same ordered handoff as ROL in the opposite direction.
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