mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-20 10:23:16 -05:00
82 lines
4.0 KiB
YAML
82 lines
4.0 KiB
YAML
emulator: DroidArcadia
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type: standalone
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core_classification: embedded_hle
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source: "https://amigan.1emu.net/releases/"
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upstream: "https://amigan.1emu.net/releases/"
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version_source:
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url: "https://amigan.1emu.net/releases/"
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pattern: 'Download DroidArcadia ([0-9.]+) for Android'
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author: "James Jacobs (Amigan Software)"
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profiled_date: "2026-10-20"
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core_version: "4.74"
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display_name: "Emerson Arcadia 2001 / Interton VC 4000 (DroidArcadia)"
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cores:
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- droidarcadia
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- com.amigan.droidarcadia
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systems:
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- emerson-arcadia-2001
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- interton-vc4000
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- elektor-tv-games-computer
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- arcade
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mode: standalone
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notes: |
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Android build of the Signetics 2650 emulator line by James Jacobs, published
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as package com.amigan.droidarcadia. A game arrives as a content URI declared
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by the manifest under MIME type application/octet-stream or application/zip,
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a zip yielding its first member only, and the read stops at 32768 bytes. This
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reading is taken from the author's own source archive DroidArcadia-src.rar
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4.74, md5 1407628c01a2fe87e79e027dce2097f1, and confirmed against the
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published DroidArcadia.apk, md5 ffa7a749c1c776c4b01ed145f2428531, signed
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by the Amigan Software key with certificate sha256
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B4904B06F8BB0832BB90472F1655E776C4A859CEB72753C51CDDB5DD360086A5.
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ref: app/src/main/cpp/da.h:3-5, app/src/main/AndroidManifest.xml:21-37,
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app/build.gradle:22-28, MainActivity.java:1514-1570,
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res/values/strings.xml:5-6
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Fifteen memory maps over five machines: Interton VC 4000 types A to D,
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Elektor TV Games Computer basic and expanded, Emerson Arcadia 2001 types G
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(Emerson), H (Tele-Fever) and I (Palladium), and the coin-ops Astro Wars,
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Galaxia, Laser Battle and Lazarian (Zaccaria) with Malzak 1 and 2 (Kitronix).
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ref: android.c:245-261, da.h:453-475
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Every ROM those machines run is a const array compiled into
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libdroidarcadia.so and copied into memory when the machine is set up:
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a_bios[348] for the
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Arcadia boot stub, i_bios[287] for the Interton one, e_bios_philips[2048] and
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e_bios_hobbymodule[2048] for the two Elektor monitor ROMs, galaxia_game,
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astrowars_game, lb_game and lz_game for the Zaccaria coin-ops, m1_bios and
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m2_bios for the Malzak pair. All ten arrays are present byte for byte in the
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arm64 library of the published apk.
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ref: android.c:874-885, arcadia.h:279 with arcadia.c:426, interton.h:1 with
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interton.c:36, elektor.h:1,130 with elektor.c:95-103,
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zaccaria.h:1,644,1599,3653 with zaccaria.c:243,325,423,436,
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malzak.h:1,558 with malzak.c:363,373
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The native side never opens a file. It receives the game as a byte array over
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JNI and parses it in memory: a cartridge is matched on size and CRC32 against
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the games.h table, and the bios field of the matched entry carries the Arcadia
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region and picks which of the two Elektor monitor ROMs is installed.
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RetroAchievements identification is handed that same memory with the file path
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argument left NULL, so the file reader of the bundled rcheevos is never
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reached. A coin-op is stepped to through the machine button rather than
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loaded, and a raw binary aimed at Zaccaria or Malzak hardware is refused.
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ref: android.c:1161-1178, android.c:2450-2476, android.c:2366-2380,
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android.c:1294-1297, android.c:5560-5599, elektor.c:95-103,
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OptionsActivity.java:457-467
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exclusion_note: >
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Nothing to obtain. The app reads back only what it writes in its own private
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storage, each read wrapped in a catch that continues when the file is absent:
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DroidArcadia.ini for settings, DroidArcadia.hgh for the high score table, and
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Autosave.cos with Quicksave.cos for save states. Screenshots go out to
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/sdcard/Pictures/DroidArcadia and are never read back, and RetroAchievements
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traffic, login and badge and game images alike, is decoded in memory. The apk
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carries no assets directory and no raw resource, so no payload is unpacked on
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first run either.
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ref: MainActivity.java:1135,1196,1254,1324,1352,1427,
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OptionsActivity.java:225-237,684,744, RAActivity.java:239-240,270-271,
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NetworkUtil.java:17-38
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files: []
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