mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-10 13:33:24 -05:00
Abdessamad Derraz
bc005ddd7a
melonds_ds cited the bios9 load and the tool offered the bios7 line one above it; the ref names bios9.bin, so it goes to 306. m2000's P2000.c gained a serial-support branch inside the ROM patch loop. Pins moved with the refs in all three.
202 lines
11 KiB
YAML
202 lines
11 KiB
YAML
emulator: melonDS Nightly
|
|
type: standalone
|
|
core_classification: community_fork
|
|
source: "https://github.com/rafaelvcaetano/melonDS-android"
|
|
upstream: "https://github.com/rafaelvcaetano/melonDS-android-lib"
|
|
source_commit: "3f3a1c8260850ce5f5ffe2b25ee4274b8674fa5f"
|
|
upstream_commit: "431ab4bd0003c4356e25fce89640ae1004579b9b"
|
|
profiled_date: "2026-08-12"
|
|
core_version: "2.0.1 (NIGHTLY)"
|
|
display_name: "Nintendo - DS (melonDS Nightly)"
|
|
cores: ["melonds-nightly"]
|
|
systems: [nintendo-ds, nintendo-dsi]
|
|
mode: standalone
|
|
|
|
notes: |
|
|
Android port of melonDS. The emulation code is the melonDS-android-lib
|
|
submodule, a fork of melonDS-emu/melonDS pinned at 431ab4bd and declaring
|
|
version 1.1 (CMakeLists.txt:20); the app around it is Kotlin plus a JNI layer
|
|
under app/src/main/cpp.
|
|
|
|
Nightly is a product flavor, not a separate tree: the build dimension "build"
|
|
has prod and nightly, and nightly sets applicationIdSuffix ".nightly" and the
|
|
version suffix " (NIGHTLY)" (app/build.gradle.kts:59-61,76-79), giving the package
|
|
id me.magnum.melonds.nightly. Its source set holds an app name and a launcher
|
|
icon (app/src/nightly/res), and the gitHubNightly set points the update check
|
|
at the nightly release instead of the tagged one
|
|
(app/src/gitHubNightly/java/me/magnum/melonds/github/repositories/GitHubNightlyUpdatesRepository.kt:31).
|
|
No load path differs from the prod flavor.
|
|
|
|
Files live in two directories the user picks through the storage access
|
|
framework, stored in the preferences bios_dir and dsi_bios_dir
|
|
(app/src/main/res/xml/pref_custom_firmware.xml:29-39). Both are read by
|
|
basename, so bios7.bin, bios9.bin and firmware.bin each name a DS image in one
|
|
directory and a DSi image in the other; the accepted lengths are what tell them
|
|
apart. The app lists the expected names on screen when a directory is unset or
|
|
rejected (app/src/main/res/values/strings.xml:116,118). Entries below carry the
|
|
basename the app opens in the path, under the console identifier the picker
|
|
binds to each directory, ds and dsi
|
|
(app/src/main/res/xml/pref_custom_firmware.xml:33,39).
|
|
|
|
use_custom_bios defaults off (app/src/main/res/xml/pref_custom_firmware.xml:11,
|
|
SharedPreferencesSettingsRepository.kt:258-260). With it off, launching a ROM
|
|
skips the directory check entirely and the core substitutes FreeBIOS and a
|
|
firmware built in memory, so DS games run with nothing supplied. Booting into
|
|
the firmware menu instead of a ROM always turns it on
|
|
(AndroidEmulatorManager.kt:247-253), as does any per-ROM console override
|
|
(AndroidEmulatorManager.kt:239). DSi needs both directories: the DSi check
|
|
runs the DS check after its own (ConfigurationDirectoryVerifier.kt:13-21).
|
|
|
|
The generated firmware keeps its Wi-Fi access point block in wfcsettings.bin,
|
|
read at boot and written back by the emulator
|
|
(EmulatorArgsBuilder.cpp:189,200-226, MelonInstance.cpp:58-62). It resolves
|
|
against context.filesDir (PlatformAndroid.cpp:158-163,
|
|
SharedPreferencesSettingsRepository.kt:155), app-private internal storage the
|
|
user cannot write to, and holds settings this build produced. Not listed below:
|
|
there is nothing to obtain.
|
|
|
|
Neither SD card is reachable in this build. getSDCardArgs returns nothing when
|
|
a card is disabled (SDCardArgsBuilder.cpp:19-20) and the JNI layer hardcodes
|
|
both the DSi card and the homebrew DLDI card to disabled
|
|
(MelonDSAndroidConfiguration.cpp:93-94), with no preference anywhere in the app
|
|
to turn either on; the README lists DSi SD card support under missing features. The Action Replay database the core can parse is likewise
|
|
never built: ARDatabaseDAT is reached only from src/frontend/qt_sdl, and the
|
|
Android build sets BUILD_QT_SDL OFF and links the core alone
|
|
(app/CMakeLists.txt:8,73). Cheats are entered in the app's own database.
|
|
|
|
files:
|
|
# --- DS BIOS directory (preference bios_dir) ---
|
|
- name: bios9.bin
|
|
aliases: [NDS_Bios9.bin, nds9.bin]
|
|
path: "ds/bios9.bin"
|
|
system: nintendo-ds
|
|
config_key: "bios_dir"
|
|
description: "Nintendo DS ARM9 BIOS"
|
|
required: false
|
|
hle_fallback: true
|
|
size: 4096
|
|
crc32: 2ab23573
|
|
validation: [size, crc32]
|
|
note: >-
|
|
The picker rejects any length other than 4096. The core hashes what it
|
|
loads and keeps the result as a flag rather than refusing the image: a
|
|
CRC32 other than 2ab23573 marks the BIOS non-native, which forces direct
|
|
boot and makes SetupDirectBoot copy the Nintendo logo out of the ROM header
|
|
into the BIOS at 0x20 so DS-to-GBA communication still works. FreeBIOS is
|
|
substituted when custom BIOS is off.
|
|
source_ref: "app/src/main/java/me/magnum/melonds/impl/FileSystemConfigurationDirectoryVerifier.kt:51-53,100-113, app/src/main/java/me/magnum/melonds/impl/SharedPreferencesSettingsRepository.kt:149, app/src/main/cpp/EmulatorArgsBuilder.cpp:19-40, src/MemConstants.h:30-36, src/NDS.cpp:807-811, src/NDS.cpp:277-296,303-310"
|
|
|
|
- name: bios7.bin
|
|
aliases: [NDS_Bios7.bin, nds7.bin]
|
|
path: "ds/bios7.bin"
|
|
system: nintendo-ds
|
|
config_key: "bios_dir"
|
|
description: "Nintendo DS ARM7 BIOS"
|
|
required: false
|
|
hle_fallback: true
|
|
size: 16384
|
|
crc32: 1280f0d5
|
|
validation: [size, crc32]
|
|
note: >-
|
|
The picker rejects any length other than 16384. A CRC32 other than
|
|
1280f0d5 marks the BIOS non-native, which forces direct boot and leaves
|
|
Key1_KeyBuf zeroed instead of seeding it from offset 0x0030, so cartridge
|
|
Key1 encryption is unavailable. FreeBIOS is substituted when custom BIOS is
|
|
off.
|
|
source_ref: "app/src/main/java/me/magnum/melonds/impl/FileSystemConfigurationDirectoryVerifier.kt:47-49,100-113, app/src/main/java/me/magnum/melonds/impl/SharedPreferencesSettingsRepository.kt:148, app/src/main/cpp/EmulatorArgsBuilder.cpp:42-62, src/MemConstants.h:30-36, src/NDS.cpp:801-805, src/NDSCart.cpp:138-151"
|
|
|
|
- name: firmware.bin
|
|
aliases: [dsfirmware.bin]
|
|
path: "ds/firmware.bin"
|
|
system: nintendo-ds
|
|
config_key: "bios_dir"
|
|
description: "Nintendo DS firmware image"
|
|
required: false
|
|
hle_fallback: true
|
|
size_options: [131072, 262144, 524288]
|
|
validation: [size]
|
|
note: >-
|
|
Three lengths are accepted and everything else is rejected. Loaded only in
|
|
DS mode; DSi mode reads the firmware from the DSi directory but still needs
|
|
this file present, because the DSi check re-runs the DS directory check.
|
|
Nickname, message, language, colour, birthday and MAC are written into the
|
|
image before it reaches the core. A firmware the core reports as
|
|
non-bootable forces direct boot. When custom BIOS is off the core builds a
|
|
firmware in memory instead.
|
|
source_ref: "app/src/main/java/me/magnum/melonds/impl/FileSystemConfigurationDirectoryVerifier.kt:55-70,120, app/src/main/java/me/magnum/melonds/impl/SharedPreferencesSettingsRepository.kt:150, app/src/main/cpp/EmulatorArgsBuilder.cpp:93-185,289-337, src/NDS.cpp:286-288"
|
|
|
|
# --- DSi BIOS directory (preference dsi_bios_dir) ---
|
|
- name: dsi_bios9.bin
|
|
aliases: [biosdsi9.bin]
|
|
path: "dsi/bios9.bin"
|
|
system: nintendo-dsi
|
|
config_key: "dsi_bios_dir"
|
|
description: "Nintendo DSi ARM9i BIOS"
|
|
required: true
|
|
size: 65536
|
|
validation: [size]
|
|
note: >-
|
|
Opened as bios9.bin inside the DSi directory. The picker rejects any length
|
|
other than 65536, and no hash is computed on it. A load failure aborts the
|
|
launch. DSi boot copies four blocks out of it
|
|
into ITCM from 0x87F4, 0x9920, 0x99A0 and 0xA9E8, and cartridge Key1 in DSi
|
|
mode is seeded from 0x99A0. With the boot screen off, the reset vector is
|
|
overwritten in memory with 0xEAFFFFFE.
|
|
source_ref: "app/src/main/java/me/magnum/melonds/impl/FileSystemConfigurationDirectoryVerifier.kt:76-78,100-113,124, app/src/main/java/me/magnum/melonds/impl/SharedPreferencesSettingsRepository.kt:152, app/src/main/cpp/EmulatorArgsBuilder.cpp:235-260,475-477, src/DSi.cpp:950-955, src/NDSCart.cpp:127-134"
|
|
|
|
- name: dsi_bios7.bin
|
|
aliases: [biosdsi7.bin]
|
|
path: "dsi/bios7.bin"
|
|
system: nintendo-dsi
|
|
config_key: "dsi_bios_dir"
|
|
description: "Nintendo DSi ARM7i BIOS"
|
|
required: true
|
|
size: 65536
|
|
validation: [size]
|
|
note: >-
|
|
Opened as bios7.bin inside the DSi directory. The picker rejects any length
|
|
other than 65536, and no hash is computed on it. A load failure aborts the
|
|
launch. Offset 0x8308 holds the ES key used
|
|
to derive the NAND AES keys, so the NAND cannot be opened without this
|
|
exact image. DSi boot copies four blocks out of it from 0x8188, 0xB5D8,
|
|
0xC6D0 and 0xD718. With the boot screen off, the reset vector is
|
|
overwritten in memory with 0xEAFFFFFE.
|
|
source_ref: "app/src/main/java/me/magnum/melonds/impl/FileSystemConfigurationDirectoryVerifier.kt:72-74,100-113,123, app/src/main/java/me/magnum/melonds/impl/SharedPreferencesSettingsRepository.kt:151, app/src/main/cpp/EmulatorArgsBuilder.cpp:262-287,347,471-473, src/DSi.cpp:959-962"
|
|
|
|
- name: dsi_firmware.bin
|
|
aliases: [dsifirmware.bin]
|
|
path: "dsi/firmware.bin"
|
|
system: nintendo-dsi
|
|
config_key: "dsi_bios_dir"
|
|
description: "Nintendo DSi firmware image"
|
|
required: true
|
|
size: 131072
|
|
validation: [size]
|
|
note: >-
|
|
Opened as firmware.bin inside the DSi directory, where only 131072 is
|
|
accepted against three accepted lengths in the DS directory. Read in DSi
|
|
mode in place of the DS firmware, and customised the same way. The core has
|
|
no generator for DSi firmware, so nothing stands in for it.
|
|
source_ref: "app/src/main/java/me/magnum/melonds/impl/FileSystemConfigurationDirectoryVerifier.kt:80-93,125, app/src/main/java/me/magnum/melonds/impl/SharedPreferencesSettingsRepository.kt:153, app/src/main/cpp/EmulatorArgsBuilder.cpp:289-337"
|
|
|
|
- name: dsi_nand.bin
|
|
path: "dsi/nand.bin"
|
|
agnostic: true
|
|
system: nintendo-dsi
|
|
config_key: "dsi_bios_dir"
|
|
description: "Nintendo DSi NAND dump"
|
|
required: true
|
|
storage: large_file
|
|
validation: [existence]
|
|
note: >-
|
|
Opened as nand.bin inside the DSi directory. The only test the app makes is
|
|
that the entry is a file: no length, no hash. It is opened for read and
|
|
write and must already exist. The core
|
|
wants the nocash footer "DSi eMMC CID/CPU" at 0x40 before the end, falling
|
|
back to 0x000FF800 for images cut short by external tools, and reads the
|
|
eMMC CID and console ID from there to derive the FAT and ES keys with the
|
|
key at 0x8308 of the ARM7i BIOS. Touchscreen calibration is rewritten in
|
|
the mounted user data on every launch. Any regional dump works. A DSiWare
|
|
title is refused unless it is already installed in this image.
|
|
source_ref: "app/src/main/java/me/magnum/melonds/impl/FileSystemConfigurationDirectoryVerifier.kt:95-98,126, app/src/main/java/me/magnum/melonds/impl/SharedPreferencesSettingsRepository.kt:154, app/src/main/cpp/EmulatorArgsBuilder.cpp:339-420,479-481, app/src/main/java/me/magnum/melonds/domain/services/EmulatorLaunchPreconditionChecker.kt:47-70, src/DSi_NAND.cpp:43-70"
|