mirror of
https://github.com/Abdess/retroarch_system.git
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Abdessamad Derraz
e7aa9e870b
Each libretro profile records version_basis and core_version is read there at its pin. snes9x states 1.63 in snes9x.h, nestopia 2.0.0, mgba 0.11.0, vice 3.10, atari800's libretro tree 7.0.0. Cores whose build takes its version from git carry the nearest tag in describe form (flycast v2.7-90-ge88b0ce, ppsspp, duckstation, gearcoleco), placeholders copied from .info files (Git, SVN) are replaced by the code's statement, and a code that states none is null with kind none.
43 lines
1.7 KiB
YAML
43 lines
1.7 KiB
YAML
emulator: Beetle WonderSwan (Mednafen WonderSwan)
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type: libretro
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core_classification: pure_libretro
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source: "https://github.com/libretro/beetle-wswan-libretro"
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upstream: "https://mednafen.github.io/"
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profiled_date: "2026-03-24"
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source_commit: "4b01295838ea89e3f1355bbe4cb5cf98aa6108cd"
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core_version: "v0.9.35.1"
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version_basis:
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kind: file
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path: "libretro.c"
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pattern: '#define\s+MEDNAFEN_CORE_VERSION\s+"([^"]+)'
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display_name: "Bandai - WonderSwan/Color (Beetle Wonderswan)"
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cores: [beetle_wswan, mednafen_wswan, "beetle-wswan"]
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systems: [bandai-wswan, bandai-wswanc]
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notes: |
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Beetle WonderSwan is a fork of Mednafen's Cygne module for WonderSwan
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and WonderSwan Color emulation via libretro.
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No external BIOS or firmware files are required. The core bypasses the
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original boot ROM entirely by hardcoding the initial I/O register state
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in mednafen/wswan/start.inc (a 256-byte table of power-on defaults for
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all hardware registers 0x00-0xFF). On reset, WSwan_MemoryReset() in
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wswan-memory.c zeroes RAM and writes a fixed 8-byte identifier at
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0x75AC, then the CPU starts executing the cartridge directly.
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Internal EEPROM owner data (name, birthday, sex, blood type) is
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configured through core options (wswan.name, wswan.byear, wswan.bmonth,
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wswan.bday, wswan.sex, wswan.blood) and initialized at boot by
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WSwan_EEPROMInit() without needing a real EEPROM dump.
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The wswan.language core option selects English or Japanese, which is
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returned via I/O port 0xC8+ as the hardware language flag. This
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replaces the boot ROM's language selection screen.
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The NEC V30MZ CPU is emulated in software (v30mz.c). Sound DMA,
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cartridge banking, and RTC are all handled internally.
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ROM extensions: .ws, .wsc, .pc2
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files: []
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