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feat: re-profile 30 emulators, beetle to parallel_n64
source-verified: mesen FdsBios.bin→alias, MesenDB.txt phantom (embedded). mupen64plus 64DD_IPL.bin→IPL.n64 (code path fix). neocd 000-lo.lo/ng-lo.rom phantoms (algorithmically generated). new profiles: mesen-s, mupen64plus next develop/gles2/gles3. regenerate database.
This commit is contained in:
Abdessamad Derraz
+79
-101
@@ -1,144 +1,122 @@
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emulator: NeoCD
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type: libretro
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core_classification: pure_libretro
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source: "https://github.com/libretro/neocd_libretro"
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profiled_date: "2026-03-18"
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core_version: "2019"
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upstream: "https://github.com/libretro/neocd_libretro"
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profiled_date: "2026-03-24"
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core_version: "2022"
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display_name: "SNK - Neo Geo CD (NeoCD)"
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cores:
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- neocd
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systems:
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- snk-neogeo-cd
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notes: |
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NeoCD is a dedicated SNK Neo Geo CD emulator. It supports Front Loader,
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Top Loader, and CDZ hardware variants. BIOS files go in {system_dir}/neocd/
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subdirectory (src/path.cpp:7, src/libretro_bios.cpp:76-81).
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Complete rewrite of NeoCD in C++11. Scans {system_dir}/neocd/ for any .rom
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or .bin file, also inside .zip archives (src/libretro_bios.cpp:69-105,
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src/path.cpp:6 NEOCD_SYSTEM_SUBDIR = "neocd").
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The core scans the neocd/ directory for any .rom or .bin file (also inside
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.zip archives), reads the first 512 bytes, and identifies the BIOS type by
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binary pattern matching at fixed ROM addresses (src/bios.cpp:168-208).
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Filenames listed in the .info are conventional but not enforced by the core.
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BIOS identified by binary pattern matching at fixed ROM addresses, not by
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filename (src/bios.cpp:167-206). Files are auto byte-swapped if needed
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(src/bios.cpp:148-160). Files smaller than 524288 bytes are skipped
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(src/libretro_bios.cpp:42).
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Three hardware families are detected: Front Loader (NeoCD), Top Loader
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(NeoCD), and CDZ. Modified BIOS variants are also recognized: SMKDan 0.07,
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SMKDan 0.07b, Universe BIOS 3.2, and Universe BIOS 3.3. The core applies
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speed hack patches and CD recognition patches at load time for each type
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(src/bios.cpp:209-280).
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Three hardware families detected: Front Loader, Top Loader, CDZ. Modified
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variants recognized: SMKDan 0.07, SMKDan 0.07b, Universe BIOS 3.2,
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Universe BIOS 3.3 (src/bios.h:11-27). Any single valid BIOS is sufficient;
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selection via core options dropdown sorted alphabetically.
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The Y-ZOOM ROM (ng-lo.rom / 000-lo.lo) is a sprite zoom lookup table loaded
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separately (src/memory.h:22, YZOOMROM_SIZE = 0x10000 = 65536 bytes). It is
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optional but improves sprite scaling accuracy.
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Y-ZOOM ROM (ng-lo.rom / 000-lo.lo) listed in .info but generated
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algorithmically, never loaded from file (src/memory.cpp:223-253
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generateYZoomData, CRC32 E09E253C). These are phantom .info entries.
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All firmware entries are marked optional in the .info (any single valid BIOS
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is sufficient). The core presents detected BIOSes as a dropdown in the core
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options menu, sorted alphabetically by description.
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BIOS ROM size: 524288 bytes (0x80000, src/memory.h:16).
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Y-ZOOM ROM size: 65536 bytes (0x10000, src/memory.h:22).
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.info firmware_count=12 but 2 are phantoms (Y-ZOOM), effective count=10.
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.info lists uni-bioscd.rom as "Universe BIOS 3.2" but SHA1 matches
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Universe BIOS 3.3 (confirmed by GitHub README).
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files:
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# Front Loader BIOS (NeoCD original front-loading unit)
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# --- Front Loader family ---
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- name: neocd_f.rom
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dest: neocd/neocd_f.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "Front Loader BIOS, official NeoCD format"
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source_ref: "retroarch/libneocd_libretro.info:15 (firmware0)"
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note: "Front Loader BIOS (big-endian, NeoCD naming)"
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source_ref: "src/bios.cpp:59 FRONT_LOADER_SEARCH_PATTERN at 0xC0006C"
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# Front Loader BIOS, SMKDan custom
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- name: neocd_sf.rom
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dest: neocd/neocd_sf.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "Front Loader BIOS, SMKDan custom"
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source_ref: "retroarch/libneocd_libretro.info:18 (firmware1)"
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# Top Loader BIOS (NeoCD top-loading unit)
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- name: neocd_t.rom
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dest: neocd/neocd_t.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "Top Loader BIOS, official NeoCD format"
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source_ref: "retroarch/libneocd_libretro.info:21 (firmware2)"
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# Top Loader BIOS, SMKDan custom
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- name: neocd_st.rom
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dest: neocd/neocd_st.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "Top Loader BIOS, SMKDan custom"
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source_ref: "retroarch/libneocd_libretro.info:24 (firmware3)"
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# CDZ BIOS (Neo Geo CDZ, last revision)
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- name: neocd_z.rom
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dest: neocd/neocd_z.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "CDZ BIOS, official NeoCD format"
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source_ref: "retroarch/libneocd_libretro.info:27 (firmware4)"
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# CDZ BIOS, SMKDan custom
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- name: neocd_sz.rom
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dest: neocd/neocd_sz.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "CDZ BIOS, SMKDan custom"
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source_ref: "retroarch/libneocd_libretro.info:30 (firmware5)"
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# Y-ZOOM ROM (sprite zoom lookup table)
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- name: ng-lo.rom
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dest: neocd/ng-lo.rom
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system: snk-neogeo-cd
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required: false
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size: 65536
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note: "Y-ZOOM ROM, NeoCD format"
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source_ref: "retroarch/libneocd_libretro.info:33 (firmware6)"
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# Y-ZOOM ROM, MAME naming
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- name: 000-lo.lo
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dest: neocd/000-lo.lo
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system: snk-neogeo-cd
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required: false
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size: 65536
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note: "Y-ZOOM ROM, MAME naming (same content as ng-lo.rom)"
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source_ref: "retroarch/libneocd_libretro.info:36 (firmware7)"
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# Front Loader BIOS, MAME naming
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- name: front-sp1.bin
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dest: neocd/front-sp1.bin
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "Front Loader BIOS, MAME naming (same content as neocd_f.rom)"
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source_ref: "retroarch/libneocd_libretro.info:39 (firmware8)"
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note: "Front Loader BIOS (little-endian, MAME naming)"
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source_ref: "src/bios.cpp:59 FRONT_LOADER_SEARCH_PATTERN, src/bios.cpp:148-160 autoByteSwap"
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- name: neocd_sf.rom
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dest: neocd/neocd_sf.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "Front Loader BIOS, SMKDan 0.07b"
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source_ref: "src/bios.cpp:62 SMKDANBETA_FRONT_SEARCH_PATTERN at 0xC00004"
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# --- Top Loader family ---
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- name: neocd_t.rom
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dest: neocd/neocd_t.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "Top Loader BIOS (big-endian, NeoCD naming)"
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source_ref: "src/bios.cpp:60 TOP_LOADER_SEARCH_PATTERN at 0xC0006C"
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# Top Loader BIOS, MAME naming
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- name: top-sp1.bin
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dest: neocd/top-sp1.bin
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "Top Loader BIOS, MAME naming (same content as neocd_t.rom)"
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source_ref: "retroarch/libneocd_libretro.info:42 (firmware9)"
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note: "Top Loader BIOS (little-endian, MAME naming)"
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source_ref: "src/bios.cpp:60 TOP_LOADER_SEARCH_PATTERN, src/bios.cpp:148-160 autoByteSwap"
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- name: neocd_st.rom
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dest: neocd/neocd_st.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "Top Loader BIOS, SMKDan 0.07b"
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source_ref: "src/bios.cpp:63 SMKDANBETA_TOP_SEARCH_PATTERN at 0xC00004"
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# --- CDZ family ---
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- name: neocd_z.rom
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dest: neocd/neocd_z.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "CDZ BIOS (big-endian, NeoCD naming)"
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source_ref: "src/bios.cpp:61 CDZ_SEARCH_PATTERN at 0xC0006C"
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# CDZ BIOS, MAME naming
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- name: neocd.bin
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dest: neocd/neocd.bin
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "CDZ BIOS, MAME naming (same content as neocd_z.rom)"
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source_ref: "retroarch/libneocd_libretro.info:45 (firmware10)"
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note: "CDZ BIOS (little-endian, MAME naming)"
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source_ref: "src/bios.cpp:61 CDZ_SEARCH_PATTERN, src/bios.cpp:148-160 autoByteSwap"
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- name: neocd_sz.rom
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dest: neocd/neocd_sz.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "CDZ BIOS, SMKDan 0.07b"
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source_ref: "src/bios.cpp:64 SMKDANBETA_CDZ_SEARCH_PATTERN at 0xC00004"
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# Universe BIOS for CD systems
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- name: uni-bioscd.rom
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dest: neocd/uni-bioscd.rom
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system: snk-neogeo-cd
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required: false
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size: 524288
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note: "Universe BIOS CD, third-party multi-region BIOS (hack)"
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source_ref: "retroarch/libneocd_libretro.info:48 (firmware11)"
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note: "Universe BIOS 3.3, CDZ-based third-party multi-region BIOS"
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source_ref: "src/bios.cpp:68 UNIVERSE33_SEARCH_PATTERN at 0xC00150"
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