mirror of
https://github.com/Abdess/retroarch_system.git
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Abdessamad Derraz
b3b3880c19
Profiles that read two repositories, a libretro port and its upstream, now prefix each citation with source or upstream, decided by which tree carries the cited value at its pin. The emulator pages use the word to tell libretro glue, emulator code as the port carries it, and the upstream emulator apart.
127 lines
5.5 KiB
YAML
127 lines
5.5 KiB
YAML
emulator: "2600.emu"
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type: standalone
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core_classification: community_fork
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source: "https://github.com/Rakashazi/emu-ex-plus-alpha"
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upstream: "https://github.com/stella-emu/stella"
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profiled_date: "2026-08-11"
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source_commit: "1c12fac5ce49badaadff2e2f210dcc30b89f4943"
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upstream_commit: "d55b1aec0d067a4c901a6dcdf81cb8f579685659"
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core_version: "1.5.85"
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display_name: "Atari - 2600 (2600.emu)"
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mode: standalone
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cores:
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- "2600-emu"
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- "2600.emu"
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- "2600-EMU"
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systems:
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- atari-2600
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notes: |
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Android and Linux member of the EX Emulator series by Robert Broglia,
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published as com.explusalpha.A2600Emu (2600.emu/metadata/conf.mk:2,6,7) and
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reached by ES-DE through its 2600-EMU find rule. Stella 7.0 is vendored under
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2600.emu/src/stella (2600.emu/src/stella/common/Version.hxx:21, identical to
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the upstream 7.0 tag) and driven by the app's own OSystem, FrameBuffer,
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EventHandler and Sound.
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The console needs no ROM of its own. The Supercharger BIOS is the built-in
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ourDummyROMCode array, patched at load and copied into the ROM area
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(2600.emu/src/stella/emucore/CartAR.cxx:263-278).
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The build defines EMU_EX_PLATFORM, SOUND_SUPPORT and THUMB_SUPPORT
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(2600.emu/CMakeLists.txt:22). DEBUGGER_SUPPORT and CHEATCODE_SUPPORT are
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absent, so the cheat database and the debugger are not compiled. PropertiesSet
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is constructed on CompositeKeyValueRepositoryNoop
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(2600.emu/src/stella/emucore/PropsSet.cxx:29-32), so cartridge properties come
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from the built-in DefProps table and no properties file is read.
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checkUserPalette returns false and paletteFile returns an empty node
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(2600.emu/src/OSystemEmuEx.hxx:69-70), which stops PaletteHandler before it
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opens anything (2600.emu/src/stella/common/PaletteHandler.cxx:405-409).
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Bezel.cxx and VideoModeHandler are not part of the build.
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KidVid needs no menu entry to engage. Both tapes leave the controller columns
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empty in the properties table
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(2600.emu/src/stella/emucore/DefProps.hxx:2339,3420), the default AUTO
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resolves to Type::Unknown (2600.emu/src/stella/emucore/Control.cxx:137-148),
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and that is the condition ControllerDetector requires before running its
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right-port signature test
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(2600.emu/src/stella/emucore/ControllerDetector.cxx:29,90-92,771-780). The
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controller is then built for either of the two matching cartridge MD5s
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(2600.emu/src/stella/emucore/Console.cxx:1096-1105,
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2600.emu/src/stella/emucore/KidVid.cxx:37-42). The app's own controller list
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bounds the port 1 option only (2600.emu/src/main/system.ccm:80-93).
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OSystem::baseDir hands the file name to EmuSystem::contentFilePath
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(2600.emu/src/main/OSystem.cc:73-76), which appends it to the content name
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instead of joining it as a directory entry (EmuFramework/src/EmuSystem.cc:
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448-452, EmuFramework/include/emuframework/EmuSystem.hh:213-218), the content
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name being the ROM file name without its dot extension
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(EmuFramework/src/EmuSystem.cc:82,91). The tapes are read beside the ROM under
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that name followed by the file name, as in
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"Smurfs Save the Day (1983) (Coleco)KVSHARED.WAV". The upstream 7.0 tag builds
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the same paths as baseDir().getPath() + fileName.
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SoundEmuEx leaves playWav, stopWav and wavSize on their base class bodies,
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which answer false, nothing and zero
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(2600.emu/src/stella/emucore/Sound.hxx:121-134). The tapes are tested with
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FSNode::exists and never read, and both games run without them through the
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timing path in KidVid::setNextSong.
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NVRAM is produced by the app. MT24LC256 fills a fresh EEPROM image with
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INITIAL_VALUE when the file is missing or not 32768 bytes
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(2600.emu/src/stella/emucore/MT24LC256.cxx:44-68), and the CTY and FA2
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cartridge saves take the same route through nvramDir.
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elf_executable_image.bin is a dump written under the elf.dump setting
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(2600.emu/src/stella/emucore/CartELF.cxx:155). ui.png, gpOverlay.png and
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kbOverlay.png are read from the application bundle through openAsset.
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files:
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- name: KVSHARED.WAV
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system: atari-2600
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required: false
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category: game_data
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description: "KidVid Voice Module shared samples, tested for both games"
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source_ref: "source 2600.emu/src/stella/emucore/KidVid.cxx:273, 299"
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- name: KVS1.WAV
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system: atari-2600
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required: false
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category: game_data
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description: "KidVid tape for Smurfs Save the Day, Harmony Smurf"
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source_ref: "source 2600.emu/src/stella/emucore/KidVid.cxx:244, 247-249, 272"
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- name: KVS2.WAV
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system: atari-2600
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required: false
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category: game_data
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description: "KidVid tape for Smurfs Save the Day, Handy Smurf"
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source_ref: "source 2600.emu/src/stella/emucore/KidVid.cxx:244, 247-249, 272"
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- name: KVS3.WAV
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system: atari-2600
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required: false
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category: game_data
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description: "KidVid tape for Smurfs Save the Day, Greedy Smurf"
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source_ref: "source 2600.emu/src/stella/emucore/KidVid.cxx:244, 247-249, 272"
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- name: KVB1.WAV
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system: atari-2600
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required: false
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category: game_data
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description: "KidVid tape for Berenstain Bears, Big Number Hunt"
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source_ref: "source 2600.emu/src/stella/emucore/KidVid.cxx:245, 247-249, 272"
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- name: KVB2.WAV
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system: atari-2600
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required: false
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category: game_data
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description: "KidVid tape for Berenstain Bears, Great Letter Roundup"
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source_ref: "source 2600.emu/src/stella/emucore/KidVid.cxx:245, 247-249, 272"
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- name: KVB3.WAV
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system: atari-2600
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required: false
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category: game_data
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description: "KidVid tape for Berenstain Bears, Spooky Spelling Bee"
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source_ref: "source 2600.emu/src/stella/emucore/KidVid.cxx:245, 247-249, 272"
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