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https://github.com/RetroPortingToolKit/psxrecomp
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Matthew Stanley
588bb679fc
Restarted recomp, dumped cd_read_log: total=2651, dest range 0x41800..0x104368, LBAs {16,18,24,373},
covers_0x107xxx=False. Recomp does the directory lookup (LBA16/18/373->0x104368) but never issues the
file load to 0x107xxx, then goes quiet (stuck). NOT a DMA-targeting/CD-fidelity bug (the 0x41800 load
proved raw reads land correct advancing code) — it's a code-path/TASK divergence in the file-load
DECISION. The state-0 handler 0x80050D44 only renders+loops, so the load is issued by another
task/callback during the splash that the recomp doesn't run. Likely candidates: (a) per-frame
scheduler/event chain off the game VBlank handler (same neighborhood as frame-1997 HookEntryInt) so
the scene-loader task never runs; (b) CD-complete-event callback; (c) a thread/TCB never resumed.
Next: trace the oracle's CD cmd stream (@0x1F801801) ~frame 2289-3960 to find the SetLoc+ReadN for
0x107xxx + the issuing PC, then check if the recomp executes it / how its event-callback chain differs.
Tooling debt: beetle lacks cd_read_log + cdrom cmd trace; raw-socket cd_read_log parse fails (use client).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>