REFORGE
Atari 2600 / F99
BEING VERIFIED

PHP/PLP were flag no-ops; Pac-Man's maze-row parity died in transit

STATUS
BEING VERIFIED
AREA
CPU
RECORDED
2026-06-11
PUBLIC SOURCE
Research dossier / finding 99
RECORD ID
atari2600-f99
SNAPSHOT
a58ea4ac37c644e9

The lifter pushed/pulled a dead r_flags vreg; the materialized model (ucmp carry, cmp_result N/Z, decimal_mode, overflow_flag) was never packed/unpacked. Pac-Man computes its legal-move table index as (X>>2) + 0x28*(row&1), preserving row parity in CARRY across two LSRs via PHP/PLP ($FBC5-$FBCE).

Raw traces, ROM material, local paths, and personal data are not part of this public record.