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libretro/emulators/stella2023.yml
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YAML

emulator: Stella 2023
type: libretro
core_classification: frozen_snapshot
source: "https://github.com/libretro/stella2023"
upstream: "https://github.com/stella-emu/stella"
profiled_date: "2026-03-25"
source_commit: "ba52c43b9eda950eb0c0eec69cda9b17dee8c39b"
core_version: "7.0_pre"
display_name: "Atari - 2600 (Stella 2023)"
cores:
- stella2023
- stella
systems:
- atari_2600
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 src/emucore/CartAR.cxx:279). The game
properties database is compiled into DefProps.hxx, and 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.
files:
- name: KVS1.WAV
description: "KidVid Voice Module audio tape 1 (Smurfs Save the Day)"
required: false
load_from: content_dir
category: game_data
source_ref: "src/emucore/KidVid.cxx:245, src/emucore/KidVid.cxx:273"
- name: KVS2.WAV
description: "KidVid Voice Module audio tape 2 (Smurfs Save the Day)"
required: false
load_from: content_dir
category: game_data
source_ref: "src/emucore/KidVid.cxx:245, src/emucore/KidVid.cxx:273"
- name: KVS3.WAV
description: "KidVid Voice Module audio tape 3 (Smurfs Save the Day)"
required: false
load_from: content_dir
category: game_data
source_ref: "src/emucore/KidVid.cxx:245, src/emucore/KidVid.cxx:273"
- name: KVB1.WAV
description: "KidVid Voice Module audio tape 1 (Berenstain Bears)"
required: false
load_from: content_dir
category: game_data
source_ref: "src/emucore/KidVid.cxx:246, src/emucore/KidVid.cxx:273"
- name: KVB2.WAV
description: "KidVid Voice Module audio tape 2 (Berenstain Bears)"
required: false
load_from: content_dir
category: game_data
source_ref: "src/emucore/KidVid.cxx:246, src/emucore/KidVid.cxx:273"
- name: KVB3.WAV
description: "KidVid Voice Module audio tape 3 (Berenstain Bears)"
required: false
load_from: content_dir
category: game_data
source_ref: "src/emucore/KidVid.cxx:246, src/emucore/KidVid.cxx:273"
- name: KVSHARED.WAV
description: "KidVid Voice Module shared audio samples"
required: false
load_from: content_dir
category: game_data
source_ref: "src/emucore/KidVid.cxx:274"