mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-11-01 07:33:45 -06:00
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.
99 lines
3.6 KiB
YAML
99 lines
3.6 KiB
YAML
emulator: O2EM
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type: libretro
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core_classification: community_fork
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core: o2em_libretro
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cores: [o2em_libretro]
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source: "https://github.com/libretro/libretro-o2em"
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upstream: "https://sourceforge.net/projects/o2em/"
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profiled_date: "2026-03-24"
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source_commit: "679d6fec04963f6e70a7ec217e3d0ebb1fe472fc"
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core_version: "1.18"
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version_basis:
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kind: file
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path: "libretro.c"
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pattern: 'info->library_version\s+=\s+"([^"]+)'
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display_name: "Magnavox - Odyssey2 / Philips Videopac+ (O2EM)"
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systems:
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- odyssey2
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- videopac
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notes: |
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Libretro port of O2EM, an Odyssey2/Videopac emulator by Daniel Boris
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and André de la Rocha. Port by Arlindo M. de Oliveira.
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One BIOS ROM selected via o2em_bios core option (default o2rom.bin).
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Loaded into rom_table[0] (1024 bytes), identified by CRC32. The CRC32 sets
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the model (vpp and bios), and an unknown one still loads with vpp=0.
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ref: libretro.c:194-226
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vpp=1 for Videopac+ variants (g7400.bin, jopac.bin).
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Core fails to load without the selected BIOS.
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Voice module ("The Voice" speech synthesis add-on) emulation via WAV
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samples in system/voice/. 9 banks × 128 samples, named {bank}{sample}.WAV
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(e.g. E480.WAV). Compiled with HAVE_VOICE=1 on most platforms. Optional:
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core works without samples, speech is silently skipped.
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BIOS loading: load_bios() at libretro.c:150-229.
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BIOS selection: libretro_core_options.h:52-64.
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Voice loading: init_voice() at src/voice.c:39-91, called from libretro.c:1060-1067.
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files:
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- name: "o2rom.bin"
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system: odyssey2
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required: true
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variant_group: "o2em-bios"
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min_size: 1024
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md5: "562d5ebf9e030a40d6fabfc2f33139fd"
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sha1: "b2e1955d957a475de2411770452eff4ea19f4cee"
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crc32: "8016a315"
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validation: [size]
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note: >
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Odyssey2 BIOS (G7000 NTSC), vpp=0. The default value of o2em_bios, so
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the core opens it unless another BIOS is chosen. retro_load_game fails
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when the chosen file cannot be opened or holds fewer than 1024 bytes.
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Only the first 1024 bytes are read.
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source_ref: "libretro_core_options.h:52-64, libretro.c:1143-1147, libretro.c:989, libretro.c:1043-1044, libretro.c:160-189"
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- name: "c52.bin"
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system: videopac
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required: false
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variant_group: "o2em-bios"
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min_size: 1024
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md5: "f1071cdb0b6b10dde94d3bc8a6146387"
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sha1: "a6120aed50831c9c0d95dbdf707820f601d9452e"
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crc32: "a318e8d6"
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validation: [size]
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note: "Videopac G7000 European BIOS. vpp=0, auto-sets PAL. Opened only when o2em_bios names it."
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source_ref: "libretro_core_options.h:52-64, libretro.c:1149-1155, libretro.c:1043-1044"
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- name: "g7400.bin"
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system: videopac
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required: false
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variant_group: "o2em-bios"
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min_size: 1024
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md5: "c500ff71236068e0dc0d0603d265ae76"
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sha1: "5130243429b40b01a14e1304d0394b8459a6fbae"
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crc32: "e20a9f41"
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validation: [size]
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note: "Videopac+ G7400 European BIOS. vpp=1. Opened only when o2em_bios names it."
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source_ref: "libretro_core_options.h:52-64, libretro.c:1156-1161, libretro.c:1043-1044"
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- name: "jopac.bin"
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system: videopac
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required: false
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variant_group: "o2em-bios"
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min_size: 1024
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md5: "279008e4a0db2dc5f1c048853b033828"
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sha1: "54b8d2c1317628de51a85fc1c424423a986775e4"
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crc32: "11647ca5"
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validation: [size]
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note: "Videopac+ G7400 French BIOS (JoPac). vpp=1. Opened only when o2em_bios names it."
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source_ref: "libretro_core_options.h:52-64, libretro.c:1162-1167, libretro.c:1043-1044"
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- name: "voice/"
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type: directory
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required: false
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category: game_data
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note: "The Voice speech synthesis WAV samples. 9 banks (E4, E8-EF) × 128 samples."
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source_ref: "src/voice.c:38-90, libretro.c:1060-1068"
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