emulator: Opera (4DO) type: libretro core_classification: community_fork core: opera_libretro cores: [opera] source: "https://github.com/libretro/opera-libretro" upstream: "https://sourceforge.net/projects/freedo/" profiled_date: "2026-03-24" core_version: "1.0.0" display_name: "The 3DO Company - 3DO (Opera)" systems: - 3do notes: | Opera is the libretro port of the 4DO/FreeDO 3DO Interactive Multiplayer emulator. The core requires exactly one system BIOS ROM (rom1) selected via the opera_bios core option. BIOS files are loaded from the system directory with read_file_from_system_directory() and byteswapped on little-endian hosts. The core will not start without a valid BIOS ROM. The user selects which BIOS to use from the core option dropdown, which only lists BIOS files physically present in the system directory. Any single BIOS from the list below is sufficient to run games from its region. Kanji font ROMs (rom2) are optional and only needed for Japanese text rendering. They are loaded via opera_lr_opts_set_font() and selected via opera_font core option. All BIOS files are exactly 1 MB (1048576 bytes) except 3do_arcade_saot.bin (512 KB) and panafz1-kanji.bin (933636 bytes). BIOS definitions: libopera/opera_bios.c BIOSES[] lines 3-136. BIOS loading: opera_lr_opts.c opera_lr_opts_set_bios() lines 239-270. Font loading: opera_lr_opts.c opera_lr_opts_get_font() lines 274-293, opera_lr_opts_set_font() lines 297-328. Core option: libretro_core_options.c opera_bios / opera_font. files: # ------------------------------------------------------- # Panasonic FZ-1 (US) - original 3DO launch model # ------------------------------------------------------- - name: "panafz1.bin" system: 3do region: [north-america] required: true size: 1048576 # 1 MB md5: "f47264dd47fe30f73ab3c010015c155b" sha1: "34bf189111295f74d7b7dfc1f304d98b8d36325a" note: "Panasonic FZ-1 (U). Version unknown, dated 1993-08-03." source_ref: "libopera/opera_bios.c:6-17" # ------------------------------------------------------- # Panasonic FZ-1 (Japan) # ------------------------------------------------------- - name: "panafz1j.bin" system: 3do region: [japan] required: true size: 1048576 # 1 MB md5: "a496cfdded3da562759be3561317b605" sha1: "ec7ec62d60ec0459a14ed56ebc66761ef3c80efc" note: "Panasonic FZ-1 (J). Version 1.54, dated 1994-01-22." source_ref: "libopera/opera_bios.c:19-30" # ------------------------------------------------------- # Panasonic FZ-1 (Japan) [No RSA] # ------------------------------------------------------- - name: "panafz1j-norsa.bin" system: 3do region: [japan] required: false size: 1048576 # 1 MB md5: "f6c71de7470d16abe4f71b1444883dc8" sha1: "a417587ae3b0b8ef00c830920c21af8bee88e419" note: "Panasonic FZ-1 (J) with RSA check removed. Version 1.54." source_ref: "libopera/opera_bios.c:32-43" # ------------------------------------------------------- # Panasonic FZ-10 (US) - slim redesign # ------------------------------------------------------- - name: "panafz10.bin" system: 3do region: [north-america] required: true size: 1048576 # 1 MB md5: "51f2f43ae2f3508a14d9f56597e2d3ce" sha1: "3c912300775d1ad730dc35757e279c274c0acaad" note: "Panasonic FZ-10 (U). Version 1.59.1.1, dated 1994-08-25." source_ref: "libopera/opera_bios.c:45-56" # ------------------------------------------------------- # Panasonic FZ-10 (US) [No RSA] # ------------------------------------------------------- - name: "panafz10-norsa.bin" system: 3do region: [north-america] required: false size: 1048576 # 1 MB md5: "1477bda80dc33731a65468c1f5bcbee9" sha1: "f05e642322c03694f06a809c0b90fc27ac73c002" note: "Panasonic FZ-10 (U) with RSA check removed. Version 1.59.1.1." source_ref: "libopera/opera_bios.c:58-69" # ------------------------------------------------------- # Panasonic FZ-10 (Europe) ANVIL # ------------------------------------------------------- - name: "panafz10e-anvil.bin" system: 3do region: [europe] required: true size: 1048576 # 1 MB md5: "a48e6746bd7edec0f40cff078f0bb19f" sha1: "a900371f0cdcdc03f79557f11d406fd71251a5fd" note: "Panasonic FZ-10 (E) ANVIL. Version 1.66.1.1, dated 1994-09-22." source_ref: "libopera/opera_bios.c:71-82" # ------------------------------------------------------- # Panasonic FZ-10 (Europe) ANVIL [No RSA] # ------------------------------------------------------- - name: "panafz10e-anvil-norsa.bin" system: 3do region: [europe] required: false size: 1048576 # 1 MB md5: "cf11bbb5a16d7af9875cca9de9a15e09" sha1: "2765c7b4557cc838b32567d2428d088980295159" note: "Panasonic FZ-10 (E) ANVIL with RSA check removed. Version 1.66.1.1." source_ref: "libopera/opera_bios.c:84-95" # ------------------------------------------------------- # Goldstar GDO-101M (US) # ------------------------------------------------------- - name: "goldstar.bin" system: 3do region: [north-america] required: true size: 1048576 # 1 MB md5: "8639fd5e549bd6238cfee79e3e749114" sha1: "c4a2e5336f77fb5f743de1eea2cda43675ee2de7" note: "Goldstar GDO-101M. Version 1.59, dated 1994-05-10." source_ref: "libopera/opera_bios.c:97-108" # ------------------------------------------------------- # Sanyo Try IMP-21J (Japan) # ------------------------------------------------------- - name: "sanyotry.bin" system: 3do region: [japan] required: true size: 1048576 # 1 MB md5: "35fa1a1ebaaeea286dc5cd15487c13ea" sha1: "b01c53da256dde43ffec4ad3fc3adfa8d635e943" note: "Sanyo Try IMP-21J. Version 1.59, dated 1994-05-10." source_ref: "libopera/opera_bios.c:110-121" # ------------------------------------------------------- # 3DO Arcade - SAOT # ------------------------------------------------------- - name: "3do_arcade_saot.bin" system: 3do region: [north-america] required: false size: 524288 # 512 KB md5: "8970fc987ab89a7f64da9f8a8c4333ff" sha1: "520d3d1b5897800af47f92efd2444a26b7a7dead" note: "3DO Arcade SAOT board BIOS. Half the size of consumer BIOS ROMs." source_ref: "libopera/opera_bios.c:123-134" # ------------------------------------------------------- # Kanji font ROM - FZ-1 (933636 bytes, non-standard size) # ------------------------------------------------------- - name: "panafz1-kanji.bin" system: 3do region: [japan] required: false size: 933636 md5: "b8dc97f778a6245c58e064b0312e8281" sha1: "acd39a8fee1b9d2950d5ab447846c11fb31af63e" note: "Kanji font ROM for FZ-1. Version 16.4, dated 1993-08-03. Optional, Japanese text only." source_ref: "libopera/opera_bios.c:141-152" # ------------------------------------------------------- # Kanji font ROM - FZ-1J (1 MB) # ------------------------------------------------------- - name: "panafz1j-kanji.bin" system: 3do region: [japan] required: false size: 1048576 # 1 MB md5: "c23fb5d5e6bb1c240d02cf968972be37" sha1: "884515605ee243577ab20767ef8c1a7368e4e407" note: "Kanji font ROM for FZ-1J. Version 16.4, dated 1993-08-03. Optional, Japanese text only." source_ref: "libopera/opera_bios.c:154-165" # ------------------------------------------------------- # Kanji font ROM - FZ-10JA ANVIL (1 MB) # ------------------------------------------------------- - name: "panafz10ja-anvil-kanji.bin" system: 3do region: [japan] required: false size: 1048576 # 1 MB md5: "428577250f43edc902ea239c50d2240d" sha1: "2e857b957803d0331fd229328df01f3ffab69eee" note: "Kanji font ROM for FZ-10JA ANVIL. Version 16.4. Optional, Japanese text only." source_ref: "libopera/opera_bios.c:167-178" platform_details: 3do: rom1_size: 1048576 # 1 MB standard BIOS rom1_arcade_size: 524288 # 512 KB arcade BIOS rom2_max_size: 1048576 # 1 MB kanji font ROM bios_selection: "core option opera_bios, user picks from detected files" font_selection: "core option opera_font, optional" byteswap: "rom1 is byteswapped on little-endian (opera_mem_rom1_byteswap32_if_le)" hle_available: false source_ref: "opera_lr_opts.c:239-270, libopera/opera_bios.c:3-180"