MegaManX6Recomp

This recompilation is a byproduct of developing psxrecomp — the games are the proving ground, the framework is the goal. These are in-development previews, not finished ports — expect rough edges, and depth will keep landing over months, not days. My time for any one title is limited, so I ask for your patience. Contributions are welcome — testing, issues, and PRs to the game or framework all help and will accelerate this game's polish. More on the why at: Recomp + AI: 5 Months Later »

Mega Man X6 (USA, SLUS-01395, disc revision v1.1) statically recompiled to a native PC executable with PSXRecomp — the same framework behind TombaRecomp.

What This Is

This repository contains the game-specific configuration, seeds, tools, and build glue for running Mega Man X6 on the PSXRecomp framework. The game's MIPS code is machine-translated ("recompiled") ahead of time into native C, then compiled into a real Windows program that runs the game's own logic on a faithful simulation of the PS1 hardware (GPU, SPU, GTE, memory cards) plus the real, recompiled PS1 BIOS — no high-level emulation shims.

It does not contain the Mega Man X6 disc image, a retail PS1 BIOS, generated game code, or any decompiled game C. Release builds include the MIT-licensed OpenBIOS from PCSX-Redux; game data and an optional retail BIOS come from your own legally obtained assets.

The Mods catalog incorporates an adaptation of Mega Man X6 Tweaks, authored by acediez (RHDN project thread). acediez explicitly granted permission to adapt and ship his work as part of Mega Man X6 Recompiled. Every included tweak remains opt-in and disabled by default.

The English retranslation by DuoDynamo is included with his direct redistribution approval and remains opt-in and disabled by default. The extra portrait/palette work credited to MetalWario64 is neither included nor enabled while separate approval remains pending. See mods/preloaded/ATTRIBUTION.md.

Important files:

• game.toml: runtime / recompiler / video / controller / widescreen config.
• mods/preloaded/: built-in mod catalog and attribution/permission ledger.
• seeds/: Ghidra-derived function starts and game-specific seed data.
• tools/regen.ps1: regenerates the recompiled C output.
• tools/package_release.ps1: builds the redistributable release zip.
• psxrecomp-v4.pin: framework commit this project is known-good against.
• ISSUES.md: game-specific issue log.
• DISC.md: source-disc identity and verification hashes.
• WIDESCREEN.md: design notes for the experimental 16:9 mode.

Status

Playable preview — v0.0.1-alpha. This is the first public cut. Mega Man X6 boots from the PS1 BIOS and plays — through the opening, into stages, with working controller input and memory-card save/load, and no known crashes. It has not yet been verified all the way to the end, so treat it as a very playable preview rather than a certified full playthrough.

Area	State
PS1 BIOS boot	Works (real recompiled BIOS)
Disc-detect / boot	Works (loads ROCK_X6.DAT, reaches the engine)
X-vs-Zero / Space Colony intro FMV	Plays; opt-in skip features available under Mods
Controller	Works; DualShock/analog and rumble supported
Stage gameplay	Works (not yet verified all the way to the end)
Memory-card save / load	Works (standard PS1 .mcd, emulator-compatible)
Renderers	Software and OpenGL (GPU); Software is the default this release (see ISSUES.md #7), OpenGL selectable
Widescreen 16:9	Experimental, opt-in (2D wider field of view)

Known issues: see ISSUES.md for the current issue log (including renderer notes) and the remaining enhancement follow-ups.

Enhancements

MegaManX6Recomp supports opt-in enhancement packages without permanently patching your disc. Mega Man X6 Tweaks-derived packages expose their changes as individual launcher features, including configurable animation timing, status adjustments, and optional voice hooks.

An alternate Japanese-style title screen from Mega Man X6 Tweaks.	Tweaks are enabled and configured feature-by-feature in the launcher.

The experimental widescreen package renders a genuinely wider 2D field of view instead of stretching the original 4:3 picture.

Features

These are the framework features that are already working in this build:

• Two renderers. A CPU software rasterizer (this release's default) and a GPU-authoritative OpenGL backend, both selectable in the launcher. Software is the default here because OpenGL shows intermittent flicker in this build (see ISSUES.md #7); OpenGL also serves as the automatic fallback path.
• Fast loading (turbo loads). While a load is in progress the whole machine fast-forwards at your PC's full speed, then drops back to normal the instant it finishes — so disc loads complete far faster while all of the game's internal timing (and audio) stays correct. Authentic 1× disc timing is kept; the speed comes from the load fast-forward, not from speeding up the emulated CD (which would break timing). On by default; toggleable in the launcher.
• Opt-in FMV skips. The Capcom logo and opening movie play by default. Separate skip features are available under Mods; the deprecated generic Settings toggle is disabled.
• Experimental widescreen (16:9). A genuine wider field of view for the 2D stage engine — more of the scene is drawn on both sides, not a stretched picture. Opt-in and experimental; some 2D/HUD/FMV elements and background seams can still look off. See WIDESCREEN.md.
• DualShock controller by default. MMX6 will not poll buttons until it detects an analog-capable pad, so the runtime presents a DualShock by default. Adjustable stick deadzone; per-player override in the launcher.
• Supersampling + anti-aliasing. Internal-resolution SSAA (1×–4×) with optional linear present filtering for clean edges.
• Graphical launcher. OpenBIOS works out of the box. Pick your disc and memory cards, optionally select your own verified retail BIOS, and configure renderer / supersampling / widescreen / controller before launching.
• Feature-oriented mod loader. The release preloads the adapted MMX6 Tweaks catalog as 15 package families with 203 independently configurable, default-disabled feature rows in the launcher.

Setup

Release Package (recommended)

1. Download MegaManX6Recomp-v*-windows-x64.zip from Releases and extract it.
2. Run MegaManX6Recomp.exe. A launcher window opens.
3. OpenBIOS is selected automatically. Optionally select your legally obtained SCPH1001.BIN in the BIOS row.
4. Set the game disc: select your legally obtained Mega Man X6 (USA, v1.1, SLUS-01395) disc image. The launcher verifies the ISO9660 header, region, and serial.
5. Optionally adjust renderer, supersampling, screen look, widescreen, and controller settings, then press Launch. Your choices are remembered.

Accepted disc formats: .cue + .bin (preferred — pick the .cue) and .bin. Do not convert the disc to a 2048-byte "cooked" .iso — that discards the Mode-2 Form-2 XA sectors MMX6 streams its FMV/audio from. If the header or game ID does not match SLUS-01395, the launcher warns and tries to run it anyway.

Selected paths persist next to the executable (disc.cfg and settings.toml). Clear the BIOS row to return from an optional retail selection to OpenBIOS.

Building From Source

Builds on Windows (MSYS2/MinGW).

Requirements:

• A C/C++ toolchain (MSYS2 mingw-w64-x86_64) and CMake 3.20+.
• Mega Man X6 (USA, v1.1, SLUS-01395) disc image (.cue + .bin or .bin). Not included. Verify it against DISC.md before reporting regressions.
• Optional Sony SCPH1001 BIOS ROM (SCPH1001.BIN). Not included.
• The psxrecomp framework available at the sibling path ../psxrecomp (linked in as the psxrecomp-v4 junction at the psxrecomp-v4.pin SHA), plus a recompiled BIOS in psxrecomp/generated/ (see the framework README).

The recompiler needs the game's PS-X EXE extracted from the disc. A helper is included:

python3 ../psxrecomp/tools/extract_psx_exe.py "mmx6/Mega Man X6 (USA) (v1.1).bin" SLUS_013.95 mmx6/SLUS_013.95

Generate the recompiled C, then build and run:

# Regenerate generated/SLUS_013.95_{full,dispatch}.c from the disc/EXE.
# This also emits the widescreen sites, so a regen is required after changing them.
#   Windows: pwsh tools/regen.ps1
#   (or invoke the recompiler directly:
#    ../psxrecomp/recompiler/build/psxrecomp-game.exe --config game.toml)

cmake -S . -B build -G "Unix Makefiles"
cmake --build build -j16
./build/mmx6-runtime.exe

SDL3 is the default host backend. To build the explicit SDL2 compatibility fallback, add -DPSX_SDL_BACKEND=SDL2 to the configure command above. CMake prints the selected backend and never silently changes it.

To build the redistributable Windows release (regens, builds with the launcher, bundles assets + cache, and zips it): pwsh tools/package_release.ps1.

Configuration

Most options are exposed in the launcher and persist to settings.toml. The underlying defaults live in game.toml:

• [video] — renderer (opengl / software), supersampling (1–4), antialiasing, texture_filtering, aspect_ratio (4:3 / 16:9).
• [controller] — default_analog (DualShock on by default), deadzone.
• [runtime] — disc_speed (kept at 1x), turbo_loads, fast_boot, overlay_cache.
• [widescreen]* — 2D widescreen projection / background-streamer hooks (gen-time; changing these requires a regen and overlay-cache rebuild).

Controls

PSX button	Keyboard
D-Pad Up / Down / Left / Right	Arrow keys
Cross	X
Square	Z
Circle	S
Triangle	A
L1 / R1	Q / W
L2 / R2	E / R
Start	Enter
Select	Right Shift
Turbo	Tab (hold)
Fullscreen	F11 / Alt+Enter

A game controller (Xbox, PlayStation, or any SDL-recognized pad) is supported via SDL when connected. MMX6 expects an analog pad, so a DualShock/analog controller is presented by default.

PSX button	Xbox controller
D-Pad Up / Down / Left / Right	D-pad or left stick
Cross	A
Circle	B
Square	X
Triangle	Y
L1 / R1	LB / RB
L2 / R2	LT / RT
Start	Menu
Select	View / Back

Release builds include input.ini next to MegaManX6Recomp.exe. Edit it to change controller device index, deadzone, or button mapping.

Memory Cards

Save and load work. The runtime uses standard PS1 memory-card images (.mcd / .mcr) compatible with DuckStation, PCSX-Redux, Mednafen, ePSXe, and similar emulators. Cards are stored in the saves directory and managed in the launcher's memory-card UI. Runtime memory-card files are local artifacts and must not be committed.

Help make your game faster — just by playing

Why isn't the game already at full speed everywhere? Most of MMX6's code is converted ("recompiled") into a fast native program ahead of time. But PlayStation games don't keep all of their code in memory at once — they stream extra chunks of code off the disc as you reach new areas (these chunks are called overlays; MMX6 streams most of its game logic from ROCK_X6.DAT). We can't convert a chunk we've never seen, and the only way to see it is for someone to actually visit that area. Until then, that area's code runs in a slower compatibility mode.

Releases ship a head start. The cache folder next to the executable contains pre-converted native code for areas covered so far, and that work is reused across launches. While you play, the runtime records newly visited areas into overlay_captures.json and your own cache grows automatically.

Please do not post overlay_captures.json publicly. It contains verbatim snapshots of the game's code read from your disc, which is copyrighted material — keep it on your own machine, alongside your disc image.

Development Rules

• Use the real recompiled BIOS and real hardware simulation in PSXRecomp.
• No HLE BIOS shims, no stubs, no fake events, no hand-edited generated files.
• Framework changes go in mstan/psxrecomp, not here.
• Game binaries, generated code, memory cards, Ghidra databases, and build outputs stay local.
• See CLAUDE.md for project-specific rules.

License

PolyForm Noncommercial 1.0.0. See LICENSE.

Mega Man X6 is copyright Capcom. This repository contains none of the game's original binaries or assets. Release packages include PCSX-Redux OpenBIOS under the MIT notice in bios/OpenBIOS.LICENSE; they contain no retail BIOS, game assets, or disc data. The release executable and bundled cache folder contain statically recompiled (machine-translated) builds of the game's code.

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