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emulator: hakuX
type: standalone
core_classification: community_fork
source: "https://github.com/rfandango/hakuX"
upstream: "https://github.com/xemu-project/xemu"
author: "rfandango"
profiled_date: "2026-08-11"
source_commit: "e64e336d27dc8a56b67f441ec36bfddc1379cb6e"
upstream_commit: "26fcbe54f17e496bdf530dad9f237e74e2f943fc"
core_version: "0.3.1"
display_name: "Microsoft - Xbox (hakuX)"
cores:
- hakux
systems:
- microsoft-xbox
mode: standalone
notes: |
Original Xbox emulator for Android, package com.rfandango.haku_x, arm64-v8a,
tuned for Adreno. A Kotlin front end carries the launcher, setup wizard, game
library and settings, and drives a whole xemu tree built through CMake against
SDL2 and QEMU 10.2.0, the tree branching off the day before xemu moved to SDL3.
The imgui interface under ui/xui is filtered out of the source list and the
HUD, monitor and snapshot entry points are stubbed, so that front end is the
only interface. ES-DE starts .LauncherActivity with an intent VIEW whose data
URI becomes the disc slot before emulation opens.
ref: QEMU_VERSION,
android/README.md:36-39,
android/app/build.gradle.kts:33-34,
android/app/src/main/AndroidManifest.xml:13-30,
android/app/src/main/cpp/CMakeLists.txt:423-424,
android/app/src/main/cpp/xemu_hud_stub.c,
android/app/src/main/cpp/monitor_stub.c,
android/app/src/main/cpp/xemu_snapshots_stub.c,
android/app/src/main/java/com/rfandango/haku_x/LauncherActivity.kt:94-104
The wizard asks for three files through the Storage Access Framework and
copies each into x1box under the external files directory of the package,
renamed mcpx.bin, flash.bin and hdd.img. The pickers keep .bin, .rom and .img
for the two ROMs and .qcow2 and .img for the disk, and each step stays blocked
until its copy lands. Those three paths, the eeprom the wizard never asks for
and the disc are written to x1box/xemu.toml under sys.files, and the launcher
sends the user back through the wizard whenever one of them stops resolving.
ref: android/app/src/main/java/com/rfandango/haku_x/SetupWizardActivity.kt:49-51,
53-120, 249-255, 350-378,
android/app/src/main/java/com/rfandango/haku_x/LauncherActivity.kt:31-92,
android/app/src/main/cpp/xemu_android.cpp:669-673, 709-711, 748-820
The flash image is the only one whose absence stops the run: it is passed as
-bios and a path that cannot be opened clears autostart. Its size must be a
non-zero multiple of 64 KB, otherwise 256 KB of 0xFF is mapped in its place.
The MCPX image must be exactly 512 bytes, another size clears the path with an
error, and the machine property is checked a second time and ends the process
when it disagrees; the bytes are overlaid on the last 512 of the mirrored flash
region. The EEPROM must be 256 bytes and is generated as
XBOX_EEPROM_VERSION_R1 when the path does not exist. An empty disk path
attaches no drive at index 0 at all, while the disc drive at index 1 is always
attached and simply carries no media when no image is picked.
ref: system/vl.c:2921-2964, 2998-3022, 3057-3072, 3078-3092, 3094-3113,
hw/xbox/xbox.c:65-104, 144-166
Settings imports a dashboard tree from a ZIP or a folder into the FATX
partitions of the configured disk image, C at 0x8CA80000 and E at 0xABE80000,
moving the entries it overwrites to a backup folder first. A source that has
neither a C nor an E directory goes to C whole. The tree is searched for a boot
XBE beforehand and the best candidate is copied to C/xboxdash.xbe when that
name is missing, xboxdash.xbe, default.xbe, evoxdash.xbe, avalaunch.xbe,
unleashx.xbe, xbmc.xbe and nexgen.xbe scoring in that order. The status line
probes C for xboxdash.xbe, msdash.xbe, xbox.xtf and the directories xodash,
audio, fonts and xboxdashdata.*, and calls the install complete when the boot
XBE sits beside at least one of the others.
ref: android/app/src/main/cpp/xemu_fatx_import.c:51-54, 1704-1730, 1763-1862,
1864-1927,
android/app/src/main/java/com/rfandango/haku_x/XboxInsigniaHelper.kt:10-53,
android/app/src/main/java/com/rfandango/haku_x/SettingsActivity.kt:2523-2620,
2661-2708
Preparing Insignia networking turns the NAT backend on and writes the DNS
46.101.64.175 into the config sector of the disk image and into the EEPROM at
0xAC. Registration boots a Setup Assistant image the user picks, which is put
in the disc slot like any other game.
ref: android/app/src/main/java/com/rfandango/haku_x/XboxInsigniaHelper.kt:7-8,
56-86,
android/app/src/main/java/com/rfandango/haku_x/XboxEepromEditor.kt:17,
android/app/src/main/java/com/rfandango/haku_x/SettingsActivity.kt:1764-1766,
1830-1847
The disk tools format an image that is already configured and never create one:
a retail layout needs at least 0x1DD156000 bytes and the extended F and G
layouts need room past that boundary. The EEPROM editor rewrites language,
video standard, resolution flags, aspect ratio and refresh rate in place, and
recomputes both checksums.
ref: android/app/src/main/java/com/rfandango/haku_x/XboxHddFormatter.kt:7-29,
47-79,
android/app/src/main/java/com/rfandango/haku_x/XboxEepromEditor.kt:9-38,
android/app/src/main/cpp/xemu_hdd_tools_jni.c:932-983
files:
- name: mcpx_1.0.bin
required: true
path: "x1box/mcpx.bin"
config_key: "sys.files.bootrom_path"
size: 512
validation: [size]
description: "MCPX southbridge boot ROM"
note: >-
Copied under the fixed name mcpx.bin from whatever .bin, .rom or .img file
the wizard is pointed at, and named by bootrom_path in the config. A size
other than 512 bytes empties the setting and the machine property is left
off; when the property is set the loader checks the size again and ends the
process rather than continue. The bytes are read over the last 512 of the
flash image and the region stays writable so early retail kernels keep
their cache quirk.
source_ref: "system/vl.c:2998-3022, hw/xbox/xbox.c:144-172, android/app/src/main/java/com/rfandango/haku_x/SetupWizardActivity.kt:53-74, android/app/src/main/cpp/xemu_android.cpp:669, 748-760"
- name: Complex_4627.bin
required: true
path: "x1box/flash.bin"
config_key: "sys.files.flashrom_path"
min_size: 65536
size_note: "Any non-zero multiple of 65536; 256 KB is assumed when the image cannot be read."
validation: [size]
description: "Xbox flash ROM"
note: >-
Copied under the fixed name flash.bin and passed as -bios. A path that
cannot be opened queues an error and clears autostart, so nothing runs
without it. The image is mapped at 0xFF000000 and mirrored to the top of
the address space; a size that is zero or not a multiple of 64 KB, or a
short read, falls back to 256 KB filled with 0xFF. A retail image cannot
launch unsigned code, so a debug or modified image is what boots a title.
source_ref: "system/vl.c:3057-3072, hw/xbox/xbox.c:65-124, android/app/src/main/java/com/rfandango/haku_x/SetupWizardActivity.kt:76-97, android/app/src/main/cpp/xemu_android.cpp:670, 761-773"
- name: xbox_hdd.qcow2
required: true
path: "x1box/hdd.img"
config_key: "sys.files.hdd_path"
description: "Xbox hard disk image"
note: >-
Copied under the fixed name hdd.img, in qcow2 or raw form, and attached as
index 0 with locked=on and cache=writethrough. An empty setting attaches no
drive at all and an unopenable one only queues a message, but the launcher
refuses to leave the wizard until the file resolves. The formatter builds
FATX partitions inside an image that already exists and needs at least
0x1DD156000 bytes for the retail layout; it never creates the image. A
qcow2 with a backing file is reported at load because the sectors it did
not modify are read from that other file.
source_ref: "system/vl.c:3078-3092, android/app/src/main/java/com/rfandango/haku_x/SetupWizardActivity.kt:99-120, android/app/src/main/java/com/rfandango/haku_x/XboxHddFormatter.kt:7-29, 47-79, android/app/src/main/cpp/xemu_android.cpp:176-184, 671-672, 774-795"
- name: eeprom.bin
required: false
path: "x1box/eeprom.bin"
config_key: "sys.files.eeprom_path"
size: 256
validation: [size]
description: "Xbox EEPROM image"
note: >-
Always pointed at x1box/eeprom.bin, a path the wizard never asks for.
Generated as XBOX_EEPROM_VERSION_R1 when it does not exist, so a dump is
needed only to carry over a console serial, region or HDD key. It is
attached through the smbus-storage device; a size other than 256 bytes, or
a generation that fails, clears autostart. Preparing Insignia and the
EEPROM editor write to it in place.
source_ref: "system/vl.c:2921-2964, 3045-3055, android/app/src/main/cpp/xemu_android.cpp:671, 711, android/app/src/main/java/com/rfandango/haku_x/SettingsActivity.kt:1264-1267"
- name: xboxdash.xbe
required: false
load_from: hdd_image
path: "C/xboxdash.xbe"
description: "Retail dashboard boot executable"
note: >-
Imported to the root of partition C from the C directory of a user
dashboard tree. The import treats this name as the boot entry: when it is
absent the best scoring .xbe of the tree is copied to it, and the retail
boot counts as ready only once the name exists. The start path of the
emulator never reads partition C, and preparing Insignia finishes with a
warning when the name is missing.
source_ref: "android/app/src/main/cpp/xemu_fatx_import.c:1796-1797, 1842-1843, 1864-1893, android/app/src/main/java/com/rfandango/haku_x/SettingsActivity.kt:2523-2563, 2584-2620"
- name: msdash.xbe
required: false
load_from: hdd_image
path: "C/msdash.xbe"
description: "Retail dashboard executable kept beside the boot copy"
note: >-
Probed at the root of partition C and imported with the rest of the tree.
Its presence beside the boot XBE is one of the marks the status line reads
to call a dashboard install complete.
source_ref: "android/app/src/main/cpp/xemu_fatx_import.c:1798-1799, 1844-1845, android/app/src/main/java/com/rfandango/haku_x/XboxInsigniaHelper.kt:13, 42-50"
- name: xbox.xtf
required: false
load_from: hdd_image
path: "C/xbox.xtf"
description: "Dashboard typeface"
note: >-
Probed at the root of partition C and imported with the rest of the tree,
alongside the xodash, audio, fonts and xboxdashdata.* directories the root
scan looks for.
source_ref: "android/app/src/main/cpp/xemu_fatx_import.c:1800-1801, 1846-1847, 1786-1794, android/app/src/main/java/com/rfandango/haku_x/XboxInsigniaHelper.kt:14-16"
- name: "<driver>.zip"
required: false
unsourceable: "third-party Vulkan driver built for one GPU family, not an emulator artefact"
description: "Replacement Vulkan driver package"
note: >-
Imported through a picker into gpu_drivers under the external files
directory, renamed after the name field of the meta.json it carries, then
unpacked whole into gpu_driver in internal storage. The minApi field is
compared against the device before the archive is kept. Loading is offered
only when /dev/kgsl-3d0 exists, and clearing the install directory returns
the app to the system driver.
source_ref: "android/app/src/main/java/com/rfandango/haku_x/GpuDriverHelper.kt:19-35, 37-70, 72-99, 101-104, 138-165"
- name: "<content hash>.png"
required: false
unsourceable: "texture pack authored per title against the hashes one dump produces"
description: "Replacement texture"
note: >-
Taken from a folder of per-title subdirectories, copied into
texture_replace in internal storage, and read back by the Vulkan renderer
from the subdirectory named after the title id of the running XBE in eight
hexadecimal digits. A name is kept only when the stem is sixteen
hexadecimal digits, which is the content hash of the texture it replaces;
each PNG is decoded to a .raw sidecar carrying width and height and mapped
from there. Off unless the setting is on and the folder is set.
source_ref: "hw/xbox/nv2a/pgraph/vk/texture_replace.c:227-320, 331-377, 388-435, android/app/src/main/java/com/rfandango/haku_x/GameLibraryActivity.kt:904-990, android/app/src/main/java/com/rfandango/haku_x/MainActivity.kt:105-113"
- name: gamecontrollerdb.txt
required: false
bundled: true
size: 589031
sha1: "b194b556763146786b994f606c8697ab8f1b5f47"
description: "SDL controller mapping database"
note: >-
Read from the assets of the package at startup and handed to SDL as a
memory stream. The asset manager reads inside the archive and the path is
a constant, so there is no search order and nothing outside the package
replaces this copy; an added pad mapping goes in through
controller_map.txt instead. The revision shipped here is 589031 bytes and
is not the one other releases carry under this name.
source_ref: "android/app/src/main/cpp/xemu_android.cpp:193-268"
- name: X1_Covers.txt
required: false
bundled: true
description: "Cover art index for the game library"
note: >-
Read from the assets and turned into a lookup from normalised game name to
a URL under the X1_Covers repository, which the library fetches and caches
per title. Only lines ending in .png are kept.
source_ref: "android/app/src/main/java/com/rfandango/haku_x/GameLibraryActivity.kt:59, 398-430"
- name: controller_map.txt
required: false
load_from: internal_storage
description: "Extra SDL controller mappings"
note: >-
SDL builds this path from the internal storage directory of the package
when SDL_GAMECONTROLLERCONFIG_FILE is unset, which it is here, and reads it
while the game controller subsystem starts, after the mappings compiled in
and before the ones the environment carries. It is the one mapping file a
user can add without rebuilding the package. The SDL2 tree in thirdparty is
what the build compiles, the local checkout taking precedence over the
release archive CMake would otherwise fetch.
source_ref: "thirdparty/SDL2/src/joystick/SDL_gamecontroller.c:1873-1884, 1890-1916, android/app/src/main/cpp/CMakeLists.txt:26-34"
exclusion_note: >
Three file loads present in the tree are not reached by this build and are not
listed. hw/xbox/chihiro.c falls back to the media board ROM
fpr21042_m29w160et.bin when no path is given, and maps a media board
filesystem image beside it, but the whole driver is filtered out of the source
list, so no Chihiro machine exists here. X1_Covers.xml ships in the assets and
no code opens it, the library reading X1_Covers.txt instead.
ref: hw/xbox/chihiro.c:191-253, 279-284,
android/app/src/main/cpp/CMakeLists.txt:468,
android/app/src/main/java/com/rfandango/haku_x/GameLibraryActivity.kt:403