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Stella 2023 - RetroBIOS
Type libretro
Classification Frozen snapshots
Source https://github.com/libretro/stella2023
Upstream https://github.com/stella-emu/stella
Version 7.0_pre
Profiled 2026-03-25
Cores stella2023, stella
Systems atari_2600
Technical notes

Frozen snapshot of Stella development branch (7.0_pre, copyright 2024). The .info reports display_version 6.6 which does not match the source (src/common/Version.hxx defines STELLA_VERSION as "7.0_pre").

The Atari 2600 has no BIOS ROM; TIA, RIOT, and 6507 CPU are fully emulated in software. The SuperCharger (Starpath) BIOS is emulated via a built-in dummy ROM (ourDummyROMCode in CartAR.cxx:279). The game properties database is compiled into DefProps.hxx; external loading is disabled in the libretro port (OSystemLIBRETRO returns CompositeKeyValueRepositoryNoop for the property repository).

The libretro interface does not call RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY and declares no firmware requirements (firmware_count=0 in .info).

KidVid Voice Module audio tapes (7 WAV files) are checked via FSNode::exists() in baseDir (resolves to content directory in the libretro port). SoundLIBRETRO does not override playWav()/wavSize() from the base Sound class, so WAV playback is non-functional. Games work without WAV files using a timing-based fallback in KidVid::setNextSong().

EEPROM save data for AtariVox and SaveKey peripherals is managed as NVRAM, not user-supplied.

7 files | 0 required, 7 optional | 7 in repo, 0 missing Categories: 7 game data

KVS1.WAV optional in repo game_data
KidVid Voice Module audio tape 1 (Smurfs Save the Day)

  • Source: stella2023/src/emucore/KidVid.cxx:245,273

KVS2.WAV optional in repo game_data
KidVid Voice Module audio tape 2 (Smurfs Save the Day)

  • Source: stella2023/src/emucore/KidVid.cxx:245,273

KVS3.WAV optional in repo game_data
KidVid Voice Module audio tape 3 (Smurfs Save the Day)

  • Source: stella2023/src/emucore/KidVid.cxx:245,273

KVB1.WAV optional in repo game_data
KidVid Voice Module audio tape 1 (Berenstain Bears)

  • Source: stella2023/src/emucore/KidVid.cxx:246,273

KVB2.WAV optional in repo game_data
KidVid Voice Module audio tape 2 (Berenstain Bears)

  • Source: stella2023/src/emucore/KidVid.cxx:246,273

KVB3.WAV optional in repo game_data
KidVid Voice Module audio tape 3 (Berenstain Bears)

  • Source: stella2023/src/emucore/KidVid.cxx:246,273

KVSHARED.WAV optional in repo game_data
KidVid Voice Module shared audio samples

  • Source: stella2023/src/emucore/KidVid.cxx:274

Generated on 2026-04-03T20:37:39Z