mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-04-13 12:22:33 -05:00
ff82f64cb6
Final batch: scummvm (55 files, MT-32/engine data/themes/shaders), gearcoleco (colecovision.rom), geargrafx (4 syscard variants), gearlynx (lynxboot.img), dosbox_core (MT-32 + BASS libs), geolith (Neo Geo FPGA, aes.zip/neogeo.zip), retrodream (DC boot+flash), noods (NDS, full HLE), freej2me (JAR), jollycv (coleco+creativision), fixgb (gbc_bios), numero (TI-83), smsplus (SMS/GG/CV), vircon32 95 profiles covering every libretro core with firmware requirements. Cross-reference: 803 undeclared files, 249 in repo, 554 to source.
81 lines
3.1 KiB
YAML
81 lines
3.1 KiB
YAML
emulator: Vircon32
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type: libretro
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source: "https://github.com/vircon32/vircon32-libretro"
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cores:
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- vircon32
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systems:
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- vircon32
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notes: |
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Vircon32 is a libretro core for the Vircon32 fantasy console, a 32-bit
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virtual game console with fixed hardware specs (60 fps, 640x360, 16
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sound channels, up to 4 gamepads).
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The Standard BIOS v1.2 is embedded directly into the core binary as a
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C header (embedded/StandardBios.h), generated from Assets/StandardBios.v32
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at build time. The core never strictly requires an external BIOS file.
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BIOS loading logic (libretro.cpp:416-429):
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1. Check if system_dir/Vircon32Bios.v32 exists on disk
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2. If found, load it via Console.LoadBiosFile() (external override)
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3. If not found, load the embedded BIOS via LoadEmbeddedBios()
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This runs inside context_reset() (libretro.cpp:473-474), which is called
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whenever the OpenGL context is (re)created.
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The BIOS file format is a V32 ROM with a specific signature
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(ROMFileFormat::BiosSignature). It must contain exactly 1 texture and
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1 sound. The loader validates the signature, file structure, and version
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compatibility before loading program ROM, video ROM and audio ROM
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(V32Console.cpp:259-431).
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The external BIOS file allows users to replace the boot animation with
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a custom one. Game compatibility is not affected by BIOS choice.
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files:
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- name: "Vircon32Bios.v32"
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system: vircon32
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description: "Vircon32 console BIOS (custom override)"
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required: false
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size: 1073060
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md5: "73f04397cbb2dafcf2047b19a856153a"
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sha1: "67ddbcd018f03ed74b6e013074d92cc5f1f51c80"
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source_ref: "libretro.cpp:423-426"
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notes: |
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Optional external BIOS placed in the system directory root.
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If present, overrides the embedded Standard BIOS v1.2.
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The hashes above correspond to the Standard BIOS v1.2 bundled
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in Assets/StandardBios.v32 of the source repo. Custom BIOSes
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will have different hashes but must follow the V32 BIOS format.
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platform_details:
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embedded_bios:
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version: "Standard BIOS v1.2"
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source_ref: "libretro.cpp:28, Assets/StandardBios.v32"
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file_size: 1073060
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md5: "73f04397cbb2dafcf2047b19a856153a"
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sha1: "67ddbcd018f03ed74b6e013074d92cc5f1f51c80"
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notes: |
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The standard BIOS is compiled into the core binary as
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embedded_StandardBios[] via a generated header file. It provides
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the boot animation (Vircon32 logo + startup sound). LoadEmbeddedBios()
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writes the raw bytes into a stringstream and passes it to
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Console.LoadBiosData().
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bios_format:
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source_ref: "VirconDefinitions/FileFormats.hpp, V32Console.cpp:259-431"
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notes: |
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A V32 BIOS ROM file must have:
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- BiosSignature in the header (distinct from CartridgeSignature)
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- Exactly 1 texture (boot screen graphics)
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- Exactly 1 sound (boot sound)
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- Program ROM, Video ROM and Audio ROM in sequential layout
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The loader validates all of this before accepting the file.
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cartridge_format:
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extensions: "v32"
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source_ref: "V32Console.cpp:468-696"
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notes: |
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Cartridges use CartridgeSignature with up to 256 textures and
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1024 sounds. Program ROM can be up to 128M words (512 MB).
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