emulator: AzaharPlus
type: standalone
core_classification: community_fork
source: "https://github.com/AzaharPlus/AzaharPlus"
upstream: "https://github.com/AzaharPlus/AzaharPlus"
profiled_date: "2026-08-08"
source_commit: "18775d91a5c70be33ec828a32d9007384c4fad98"
core_version: "2126.0-A"
display_name: "Nintendo - 3DS (AzaharPlus)"
cores:
  - azaharplus
systems:
  - nintendo-3ds
mode: standalone

notes: |
  Fork of Azahar. Data dir: azaharplus-emu (AzaharPlus on Windows and macOS),
  with citra-emu and lime3ds-emu probed as legacy locations.
  ref: src/common/common_paths.h:27-49

  InitKeys reads three key sources in order: boot9.bin, keys.txt, aes_keys.txt.
  ref: src/core/hw/aes/key.cpp:617-633

  keys.txt has an AES-encrypted key blob compiled into the binary, used when the
  file is absent. ENABLE_BUILTIN_KEYBLOB defaults to ON.
  ref: src/core/hw/aes/key.cpp:485-613, CMakeLists.txt:153

  1861 title seeds are compiled in and loaded before seeddb.bin is read.
  ref: src/core/file_sys/seed_db.cpp:52-54, src/core/file_sys/seed_db.cpp:220

  System archives (shared font, Mii data, country list, bad word list) have
  open-source replacements embedded in the binary, and ClCertA falls back to an
  embedded certificate and key pair.
  ref: src/core/file_sys/archive_ncch.cpp:174-203,
  src/core/hle/service/http/http_c.cpp:2107-2133

  otp.bin, movable.sed, SecureInfo_A and LocalFriendCodeSeed_B are replaced by
  embedded dummy data when enable_required_online_lle_modules is set. That
  setting defaults to false, and every loader returns a not-found status without
  it.
  ref: src/common/settings.h:492-493

  System titles are downloaded and installed in-app from the Nintendo CDN, so
  the NAND title tree is not user-supplied.
  ref: src/core/nus_download.cpp:13, src/core/hle/service/am/am.cpp:1220-1243

  sector0x96.bin is defined but read by no code path.
  ref: src/common/common_paths.h:88

  mcu.dat, mac.txt, digests.txt, cecIds.txt and http_hle_replace_rules.txt live
  in sysdata but hold per-installation state the emulator writes itself.

files:
  - name: keys.txt
    path: sysdata/keys.txt
    system: nintendo-3ds
    required: false
    hle_fallback: true
    note: "AES key slots, common keys and NFC secrets; embedded encrypted blob used if missing"
    source_ref: "src/core/hw/aes/key.cpp:227-366, src/core/hw/aes/key.cpp:475-615"

  - name: aes_keys.txt
    path: sysdata/aes_keys.txt
    system: nintendo-3ds
    required: false
    note: "legacy keyfile format, parsed without section markers"
    source_ref: "src/core/hw/aes/key.cpp:368-471, src/common/common_paths.h:86"

  - name: boot9.bin
    path: sysdata/boot9.bin
    system: nintendo-3ds
    required: false
    size: 65536
    validation: [size]
    note: "bootrom key section read at offset 55760, filling 80 key slots"
    source_ref: "src/core/hw/aes/key.cpp:156-225, src/common/common_paths.h:87"

  - name: shared_font.bin
    path: sysdata/shared_font.bin
    system: nintendo-3ds
    required: false
    hle_fallback: true
    note: "legacy path, tried after the shared font system archive"
    source_ref: "src/core/hle/service/apt/apt.cpp:278-294, src/core/hle/service/apt/apt.cpp:305"

  - name: seeddb.bin
    path: sysdata/seeddb.bin
    system: nintendo-3ds
    required: false
    hle_fallback: true
    note: "game seed database for 9.6+ titles; written out from the embedded seeds if absent"
    source_ref: "src/core/file_sys/seed_db.cpp:52-103"

  - name: otp.bin
    path: sysdata/otp.bin
    system: nintendo-3ds
    required: false
    size: 256
    validation: [size, crypto]
    note: "console-unique OTP, AES-CBC decrypted then checked against the OTP magic"
    source_ref: "src/core/file_sys/otp.cpp:35-80, src/core/hw/unique_data.cpp:224-275"

  - name: movable.sed
    path: nand/private/movable.sed
    system: nintendo-3ds
    required: false
    size: [288, 320]
    validation: [size, signature]
    note: "console-unique key seed; 288 bytes without the AES MAC block, 320 with it"
    source_ref: "src/core/hw/unique_data.cpp:277-319, src/core/hw/unique_data.h:105-135"

  - name: SecureInfo_A
    path: nand/rw/sys/SecureInfo_A
    system: nintendo-3ds
    required: false
    size: 273
    validation: [size, signature]
    note: "console serial and region; a failed signature is retried against every region"
    source_ref: "src/core/hw/unique_data.cpp:123-181, src/core/hw/unique_data.h:59"

  - name: LocalFriendCodeSeed_B
    path: nand/rw/sys/LocalFriendCodeSeed_B
    system: nintendo-3ds
    required: false
    size: 272
    validation: [size, signature]
    note: "friend code generation seed"
    source_ref: "src/core/hw/unique_data.cpp:183-222, src/core/hw/unique_data.h:78"