mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 10:19:47 -04:00
Shokunin
825a89a9c5
Only CPU stores are cache-isolated. Mods, the FMV skip, debug pokes, the bg2d ring fill and the exception sentinel write guest memory from the host; they now go through psx_host_write_*, which bypasses isc_store the way DMA does, so a host store inside a FlushCache window reaches memory instead of rewriting an I-cache tag. The render-pass checkpoint restores the new depth counter like the DMA depth. isc_store_test covers it (a lane-0 host store in tag-test mode would otherwise mark a cold line valid). Docs: the SCPH-1001 residual starts at kernel init 0x598, and without #429 the fix removes 113 of the 126 OpenBIOS flush cycles. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Internal dev-logs & design notes
These are the working design documents and burn-down logs the project was built from. They are historical/working notes, not contributor onboarding docs — they capture decisions, phased plans, and deep subsystem investigations in the order they happened, and some sections are superseded by later ones.
If you're new here, start with the top-level README.md,
then docs/ARCHITECTURE.md,
docs/EXECUTION_MODEL.md,
docs/BUILDING.md, and
CONTRIBUTING.md. Come here when you need the why
behind a specific subsystem.
Plans & roadmap
PLAN.md— the original phased build plan (P1–P6).FAITHFUL_TIMING_PLAN.md— the authoritative cycle-accuracy north-star plan and status log.FIRST_MILESTONE.md— the first-boot milestone gate.STUBS_TO_FIX.md— hardware-stub burn-down (pre-game gate).
Cycle accuracy & timing
PRECISE_IRQ_SLICE.md— exact-instruction IRQ delivery.CYCLE_MODEL_BEETLE.md— the Beetle-derived cycle model.ACCURACY_BURNDOWN.md— full accuracy burn-down across all axes (semantics, cycle, IRQ, MMIO, peripherals, determinism).COSIM_ORACLE.md— the first-divergence co-sim oracle.
BIOS / scheduler
HLE_SCHEDULER_CARVEOUT_PLAN.md— the cooperative-thread scheduler HLE carve-out.WEDGE_load4_shell_rootcause.md— a specific boot-shell wedge root-cause writeup.
Renderer / widescreen
GL_RENDERER_HANDOFF.md— OpenGL renderer design.NATIVE_WIDE_PLAN.md— native-wide 16:9 (GTE FOV) plan.BACKDROP_PRELOAD.md— widescreen backdrop preload.
Project conventions & tracking
PRINCIPLES.md— this repo's debugging and enhancement principles (first-divergence, verified-enhancement HLE). Source comments cite it asdocs/internal/PRINCIPLES.md; a "recomp-template PRINCIPLES.md" citation means a different repo's file.ISSUES.md— the historical framework issue log. Live framework work is tracked in Beads (epicbeads-eio.3), not here.DEBUG.md— the debugging playbook behind the TCP debug server; the command reference itself is../TCP_COMMANDS.md.audit_inventory.md— what the codegen/GTE audit pipeline covers and why.
Overlay design & discovery
overlay-recompilation-design.md— the design and rationale for overlay recompilation.overlay-plan.md— the phased overlay implementation plan.overlay-discovery.md— how overlays are discovered on disc and at runtime.overlay-status.md— living what-works / what's-broken status for the overlay capture/compile/cache path.CASE_A_AOT_GAP.md— the Case-A AOT dispatch-miss gap; cited by therationalefields inrecompiler/seeds/*.json.
BIOS / boot hardening
bios-hardening.md— BIOS boot hardening notes.
GTE / CPU investigations
GTE_LM_FIX.md— the GTElmsaturation-flag fix writeup.TOMBA2_EXC_CONSULT_RESPONSE.md— exception -path consultation response for the Tomba 2 bring-up.
Upstream contributor reviews
upstream/ holds per-PR review notes for community contributions, one file per
change, named <contributor>-<pr>-<topic>.md.
upstream/UPSTREAM_2026-08-20.md— the 2026-08-20 upstreaming sweep: which contributed changes are framework-general and which are title configuration.
Overlay cache internals
SLJIT_PERSIST_CACHE.md— removed. It described the persisted shard cache of the sljit Tier-2 backend, which was deleted in5b7e69b4(2026-07-15). For the current model seeruntime/src/overlay_loader.c(per-entry candidate validity),tools/compile_overlays.py(shard formation and the.rangesmanifest), and../COMPILING_OVERLAYS.md.
Removed
CYCLE_TIMING_ARCH.md— removed. Its cycle-timing architecture sketch was superseded and nothing linked to it. For the current model seeFAITHFUL_TIMING_PLAN.md(the authoritative plan),CYCLE_MODEL_BEETLE.md(the Beetle-derived cycle model), andPRECISE_IRQ_SLICE.md(exact-instruction IRQ delivery).