Atari 2600 / F159
CONFIRMEDF8 READ-PATH bank switching landed (any access to $1FF8/$1FF9 now flips the bank, matching hardware
- STATUS
- CONFIRMED
- AREA
- Evidence
- RECORDED
- 2026-06-12
- PUBLIC SOURCE
- Research dossier / finding 159
- RECORD ID
atari2600-f159- SNAPSHOT
a58ea4ac37c644e9
Two changes landed (emitter_c.py): (1) HARDWARE-CORRECTNESS — addr_map_read now flips reforge_active_bank on ANY read of $1FF8/$1FF9 (LDA/BIT/data fetches), where Finding 36 had implemented only the write path; the bank flips before the byte fetch so the returned byte comes from the newly selected bank. Affects only F8 ROMs (rom_size > 0x1000); Asteroids is the corpus' only F8 cart.
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