mirror of
https://github.com/Abdess/retroarch_system.git
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Abdessamad Derraz
1334e84a00
One run of profile_sync --all --rebase-refs --fresh. Every guard held: no ref to review, no prose left under an older pin, no file name or hash literal gained in a cited file since the pin, no built_by pin and no pin keyed by build mode. The site's record of cited source paths is rebuilt with them.
66 lines
2.3 KiB
YAML
66 lines
2.3 KiB
YAML
emulator: Gearsystem
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type: libretro
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core_classification: official_port
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source: "https://github.com/drhelius/Gearsystem"
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upstream: "https://github.com/drhelius/Gearsystem"
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profiled_date: "2026-03-23"
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source_commit: "215c22f73d06871e12291025105c98470509468d"
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core_version: "3.2.0"
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display_name: "Sega - MS/GG/SG-1000 (Gearsystem)"
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cores:
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- gearsystem
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systems:
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- sega-mastersystem
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- sega-gamegear
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- sega-sg1000
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notes: |
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Gearsystem is a Sega Master System / Game Gear / SG-1000 emulator by
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Ignacio Sanchez (drhelius). No BIOS is required for normal operation.
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The core supports optional boot ROMs for Master System and Game Gear,
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controlled by core options "gearsystem_bios_sms" and "gearsystem_bios_gg"
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(both disabled by default). Boot ROMs are loaded in load_bootroms()
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from the system directory with fixed filenames.
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SG-1000 and Game Gear in SMS mode have no BIOS support.
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IsBootromEnabled() returns false for both cases.
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When enabled, the boot ROM executes as on original hardware, which may
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cause invalid ROMs to lock or fail to boot entirely.
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files:
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# --- Master System boot ROM (optional, behind gearsystem_bios_sms) ---
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- name: "bios.sms"
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system: sega-mastersystem
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required: false
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source_ref: "platforms/libretro/libretro.cpp:775, platforms/libretro/libretro.cpp:770-782 (load_bootroms)"
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- name: "bios.gg"
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system: sega-gamegear
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required: false
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source_ref: "platforms/libretro/libretro.cpp:776, platforms/libretro/libretro.cpp:770-782 (load_bootroms)"
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platform_details:
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mastersystem:
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bios_filename: "bios.sms"
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source_ref: "src/Memory.cpp:238-243"
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note: |
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Boot ROM loaded via LoadBootromSMS() -> LoadBootroom(path, false).
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Raw binary read, stored in m_pBootromSMS. Bank count computed as
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Pow2Ceil(size / 0x4000). Memory mapping controlled by port 3E bit 3.
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gamegear:
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bios_filename: "bios.gg"
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source_ref: "src/Memory.cpp:245-250"
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note: |
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Boot ROM loaded via LoadBootromGG() -> LoadBootroom(path, true).
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Raw binary read, stored in m_pBootromGG. Same bank computation.
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Supports standard GG BIOS and Majesco 1KB variant.
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sg1000:
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bios_filename: null
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note: |
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No BIOS support. src/Memory.cpp:352-355 returns false from IsBootromEnabled()
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when IsSG1000() or IsGameGearInSMSMode() is true.
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