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Document SYS4INI startup settings

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gamer147
2026-07-28 18:08:17 -04:00
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docs/phase-a-slice-plan.md
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@@ -3329,6 +3329,35 @@ shared-profile registration.
`G[0x3ebe]` (21 references across CALCREVISE, CHMENU, DRAWTIP, GAMECLEAR, GAMESTART, IMPROVE, and
TUNE).
## SYS4INI startup-settings investigation (2026-07-28)
The post-directory SYS4INI data is now structurally and behaviorally cataloged. Himegari's decompressed
tail contains a `0x90`-byte VM-metadata block followed by a `0x2bb`-byte, 36-pair CP932 startup-settings
record. Native AGE first registers generic defaults, imports those pairs case-insensitively, applies three
special transforms (`SAVEVERSION`, `NOSETMUSIC`, and wheel-key duplication), then initializes the logical
canvas, text, graphics, audio, ADV input policy, persistence, and Windows registration integration from
the completed registry.
The investigation distinguishes active Himegari behavior from loaded compatibility metadata. Active core
results include retained renderer/draw mode, `800x600`, Mincho/antialias profile, movie-audio policy,
save layout 3.10, and AppData save-root selection. The important newly exposed ADV overrides are
`CANCELMESSKIPONCLICK=2`, `CONTROLDISIBLECURSOR=1`, `COEXISTMESSKIP=1`,
`REDRAWTEXTONKEY=0`, and wheel actions 8/9. The port does not currently parse/apply those ADV policy
values; in particular, the earlier click-cancel conclusion accidentally preserved AGE's zero fallback
instead of Himegari's override.
Legacy DirectDraw-only values, unused native-menu flags, and Windows registration/key metadata are now
classified separately so a later generic profile loader does not mistake every serialized setting for a
portable runtime requirement. No gameplay/runtime behavior changed in this investigation. The exact
serialized inventory is canonical in `sys4-format-notes.md`, native consumers and port relevance in
`engine-re.md`, multi-profile direction in `remake-architecture-and-roadmap.md`, and portability impact in
`platform-portability.md`. The `/v2` Ghidra image names/comments the importer and principal graphics,
ADV-toggle, audio, and registration consumers.
**Next:** keep the settings parser/application as a bounded generic-profile/configuration slice. Resume
the Phase-B gameplay spine unless one of the cataloged ADV policy differences becomes a visible gameplay
or input defect.
## ADV requested-face selection implemented (2026-07-28)
Opcode `0x1a5` is no longer a presentation no-op. The VM retains its requested face in