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Every profile now has: - profiled_date: date of source code analysis - core_version: version from libretro-core-info .info files - display_name: human-readable name from .info files 260/260 profiles complete. 294/294 libretro cores covered. Standalone emulators (cemu, rpcs3, xemu, vita3k) versioned manually.
166 lines
6.3 KiB
YAML
166 lines
6.3 KiB
YAML
emulator: NP2kai
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type: libretro
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source: "https://github.com/libretro/NP2kai"
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profiled_date: "2026-03-18"
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core_version: "0.86"
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display_name: "NEC - PC-98 (Neko Project II Kai)"
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systems: [pc-98]
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# NP2kai is a PC-9801/9821 emulator (Neko Project II kai).
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# All BIOS/font/sound files are loaded from <system>/np2kai/ subdirectory.
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# The core sets np2cfg.biospath to "<system>/np2kai/" in retro_load_game()
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# (sdl/libretro/libretro.c:1800-1815). All getbiospath() calls resolve
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# relative to that directory.
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#
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# The core has a built-in BIOS simulator (BIOS_SIMULATE) that can boot
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# without a real BIOS ROM, but a real bios.rom provides better compatibility.
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# Font data is auto-generated from built-in tables if font.bmp is missing,
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# but Japanese kanji display requires the real font file.
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#
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# The fmgen YM2608 rhythm engine (fmgen_opna.cpp:1413-1443) loads WAV files
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# with uppercase extension (.WAV) but the built-in rhythm engine (rhythmc.c)
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# uses lowercase (.wav). Both paths resolve from np2kai/.
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# The fmgen engine also accepts "2608_RYM.WAV" as fallback for the rim sample.
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files:
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# -- Main BIOS ROM --
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# Loaded in bios/bios.c:430-440. 96 KB (0x18000) mapped at 0xe8000.
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# Without this, the built-in BIOS simulator is used (less compatible).
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- name: "bios.rom"
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path: "np2kai/bios.rom"
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required: false
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note: >
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PC-9801 system BIOS ROM (96 KB). Provides full hardware compatibility.
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The core can boot without it using the built-in BIOS simulator, but
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some software may not work correctly. Loaded at address 0xe8000.
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source_ref: "bios/bios.c:430-440, common/strres.c:60"
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# -- ITF ROM --
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# Initial Test Firmware, loaded at ITF_ADRS (0xf8000), 32 KB.
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# Only loaded when BIOS_SIMULATE is not defined (bios/bios.c:569-574).
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# In the libretro build, BIOS_SIMULATE is typically enabled, so this is
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# only needed for non-simulated builds.
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- name: "itf.rom"
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path: "np2kai/itf.rom"
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required: false
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note: >
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Initial Test Firmware ROM (32 KB). Used for hardware initialization
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and memory check at boot. Only loaded when the built-in ITF simulator
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is disabled. Most libretro builds include the simulator.
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source_ref: "bios/bios.c:569-574"
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# -- Font file --
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# Set explicitly in libretro.c:1813 as "<system>/np2kai/font.bmp".
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# The core also supports FONT.ROM / font.rom (V98 format) via font_load().
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# Without any font file, built-in 8x8 bitmap data is used but kanji
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# characters will not display correctly.
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- name: "font.bmp"
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path: "np2kai/font.bmp"
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required: false
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note: >
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PC-98 font bitmap (288 KB). Required for correct Japanese kanji display.
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The core also accepts FONT.ROM (V98 format). Without this file,
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only basic ASCII characters render correctly using built-in data.
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source_ref: "sdl/libretro/libretro.c:1813, font/fontdata.c:11-14"
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# -- Sound BIOS ROM --
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# Loaded by soundrom_load() as "sound.rom" (soundrom.c:15-16, 28-32).
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# The filename is composed as "sound" + optional board name + ".rom".
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# 16 KB ROM for the FM sound board.
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- name: "sound.rom"
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path: "np2kai/sound.rom"
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required: false
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note: >
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FM sound board BIOS ROM (16 KB). Used by the PC-9801-26K/86/118
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sound boards. The core falls back to a minimal built-in default
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(9-byte stub) if this file is missing.
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source_ref: "sound/soundrom.c:15-16,21-55,93-106"
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# -- YM2608 OPNA rhythm samples --
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# Loaded by both the built-in rhythm engine (rhythmc.c:60-71) and the
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# fmgen engine (fmgen_opna.cpp:1413-1443). Required for YM2608 OPNA
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# rhythm sound channel (bass drum, snare, etc).
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# The fmgen engine tries uppercase .WAV, the built-in engine uses .wav.
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# Place lowercase versions - the filesystem handles case on most platforms.
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- name: "2608_bd.wav"
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path: "np2kai/2608_bd.wav"
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required: false
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note: "YM2608 OPNA rhythm sample: bass drum"
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source_ref: "sound/rhythmc.c:11, sound/fmgen/fmgen_opna.cpp:1431-1433"
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- name: "2608_sd.wav"
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path: "np2kai/2608_sd.wav"
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required: false
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note: "YM2608 OPNA rhythm sample: snare drum"
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source_ref: "sound/rhythmc.c:12"
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- name: "2608_top.wav"
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path: "np2kai/2608_top.wav"
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required: false
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note: "YM2608 OPNA rhythm sample: top cymbal"
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source_ref: "sound/rhythmc.c:13"
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- name: "2608_hh.wav"
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path: "np2kai/2608_hh.wav"
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required: false
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note: "YM2608 OPNA rhythm sample: hi-hat"
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source_ref: "sound/rhythmc.c:14"
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- name: "2608_tom.wav"
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path: "np2kai/2608_tom.wav"
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required: false
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note: "YM2608 OPNA rhythm sample: tom"
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source_ref: "sound/rhythmc.c:15"
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- name: "2608_rim.wav"
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path: "np2kai/2608_rim.wav"
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required: false
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note: "YM2608 OPNA rhythm sample: rim shot"
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source_ref: "sound/rhythmc.c:16"
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# -- IDE BIOS ROM --
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# Loaded by ideio.c:1913-1931. Tried in order: ide.rom, d8000.rom,
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# bank3.bin, bios9821.rom. Only loaded when IDE BIOS is enabled in
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# core options (np2cfg.idebios) and a real BIOS ROM is also present.
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- name: "ide.rom"
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path: "np2kai/ide.rom"
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required: false
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note: >
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IDE controller BIOS ROM (8 KB). Required for real IDE BIOS emulation
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(HDD boot from IDE). The core also checks d8000.rom, bank3.bin,
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and bios9821.rom as fallback filenames. Without this, a simulated
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IDE BIOS is used.
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source_ref: "cbus/ideio.c:1913-1931"
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# -- SCSI BIOS ROM --
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# Loaded by scsiio.c:219-231. Falls back to built-in scsibios[] stub.
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- name: "scsi.rom"
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path: "np2kai/scsi.rom"
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required: false
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note: >
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SCSI controller BIOS ROM (16 KB). For PC-98 SCSI HDD support.
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The core includes a built-in SCSI BIOS stub as fallback.
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source_ref: "cbus/scsiio.c:219-231"
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# -- PCI BIOS ROM --
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# Loaded by pcidev.c:364-382. Tries pci.rom then bank0.bin.
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# Falls back to built-in PCI BIOS simulation.
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- name: "pci.rom"
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path: "np2kai/pci.rom"
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required: false
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note: >
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PCI BIOS ROM (32 KB). For PC-9821 PCI bus emulation.
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The core also checks bank0.bin as fallback. Without this,
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the built-in PCI BIOS simulator is used.
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source_ref: "io/pcidev.c:360-382"
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# -- GPIB BIOS ROM --
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# Loaded by gpibio.c:327-356.
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- name: "gpib.rom"
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path: "np2kai/gpib.rom"
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required: false
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note: >
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GP-IB interface BIOS ROM. Rarely needed, only for GP-IB peripheral
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emulation.
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source_ref: "cbus/gpibio.c:327-356"
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