Atari 2600 / F213
BEING VERIFIEDCPX MUST NOT BORROW A'S COMPARISON PATH
- STATUS
- BEING VERIFIED
- AREA
- Recompiler
- RECORDED
- 2026-07-15
- PUBLIC SOURCE
- Research dossier / finding 213
- RECORD ID
atari2600-f213- SNAPSHOT
d8dcf6d8dd492341
HYPOTHESIS: CPX applies the same unsigned-C and wrapped-N/Z comparison contract as CMP, but its left operand is X and X is never modified. Immediate, zero-page, and absolute encodings have 2/3/4-cycle read-class schedules.
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