mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-04-13 12:22:33 -05:00
639ff69d6c
a5200, prosystem (Atari 7800), atari800 (400/800/XL/XE), vice (C64/C128/VIC-20/Plus4/PET - 10 cores, all ROMs embedded), neocd (Neo Geo CD, 12 BIOS variants), beetle_pce (PC Engine, 6 files), beetle_pcfx (PC-FX), np2kai (PC-9801, 14 files + YM2608 samples), quasi88 (PC-8801, 13 ROMs + 3 hidden fonts), opera (3DO, 10 BIOS + 3 kanji) 31 total profiles. Cross-reference: 572 undeclared, 148 in repo.
142 lines
4.7 KiB
YAML
142 lines
4.7 KiB
YAML
emulator: NeoCD
|
|
type: libretro
|
|
source: "https://github.com/libretro/neocd_libretro"
|
|
systems:
|
|
- snk-neogeo-cd
|
|
|
|
notes: |
|
|
NeoCD is a dedicated SNK Neo Geo CD emulator. It supports Front Loader,
|
|
Top Loader, and CDZ hardware variants. BIOS files go in {system_dir}/neocd/
|
|
subdirectory (src/path.cpp:7, src/libretro_bios.cpp:76-81).
|
|
|
|
The core scans the neocd/ directory for any .rom or .bin file (also inside
|
|
.zip archives), reads the first 512 bytes, and identifies the BIOS type by
|
|
binary pattern matching at fixed ROM addresses (src/bios.cpp:168-208).
|
|
Filenames listed in the .info are conventional but not enforced by the core.
|
|
|
|
Three hardware families are detected: Front Loader (NeoCD), Top Loader
|
|
(NeoCD), and CDZ. Modified BIOS variants are also recognized: SMKDan 0.07,
|
|
SMKDan 0.07b, Universe BIOS 3.2, and Universe BIOS 3.3. The core applies
|
|
speed hack patches and CD recognition patches at load time for each type
|
|
(src/bios.cpp:209-280).
|
|
|
|
The Y-ZOOM ROM (ng-lo.rom / 000-lo.lo) is a sprite zoom lookup table loaded
|
|
separately (src/memory.h:22, YZOOMROM_SIZE = 0x10000 = 65536 bytes). It is
|
|
optional but improves sprite scaling accuracy.
|
|
|
|
All firmware entries are marked optional in the .info (any single valid BIOS
|
|
is sufficient). The core presents detected BIOSes as a dropdown in the core
|
|
options menu, sorted alphabetically by description.
|
|
|
|
BIOS ROM size: 524288 bytes (0x80000, src/memory.h:16).
|
|
Y-ZOOM ROM size: 65536 bytes (0x10000, src/memory.h:22).
|
|
|
|
files:
|
|
# Front Loader BIOS (NeoCD original front-loading unit)
|
|
- name: neocd_f.rom
|
|
dest: neocd/neocd_f.rom
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 524288
|
|
note: "Front Loader BIOS, official NeoCD format"
|
|
source_ref: "retroarch/libneocd_libretro.info:15 (firmware0)"
|
|
|
|
# Front Loader BIOS, SMKDan custom
|
|
- name: neocd_sf.rom
|
|
dest: neocd/neocd_sf.rom
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 524288
|
|
note: "Front Loader BIOS, SMKDan custom"
|
|
source_ref: "retroarch/libneocd_libretro.info:18 (firmware1)"
|
|
|
|
# Top Loader BIOS (NeoCD top-loading unit)
|
|
- name: neocd_t.rom
|
|
dest: neocd/neocd_t.rom
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 524288
|
|
note: "Top Loader BIOS, official NeoCD format"
|
|
source_ref: "retroarch/libneocd_libretro.info:21 (firmware2)"
|
|
|
|
# Top Loader BIOS, SMKDan custom
|
|
- name: neocd_st.rom
|
|
dest: neocd/neocd_st.rom
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 524288
|
|
note: "Top Loader BIOS, SMKDan custom"
|
|
source_ref: "retroarch/libneocd_libretro.info:24 (firmware3)"
|
|
|
|
# CDZ BIOS (Neo Geo CDZ, last revision)
|
|
- name: neocd_z.rom
|
|
dest: neocd/neocd_z.rom
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 524288
|
|
note: "CDZ BIOS, official NeoCD format"
|
|
source_ref: "retroarch/libneocd_libretro.info:27 (firmware4)"
|
|
|
|
# CDZ BIOS, SMKDan custom
|
|
- name: neocd_sz.rom
|
|
dest: neocd/neocd_sz.rom
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 524288
|
|
note: "CDZ BIOS, SMKDan custom"
|
|
source_ref: "retroarch/libneocd_libretro.info:30 (firmware5)"
|
|
|
|
# Y-ZOOM ROM (sprite zoom lookup table)
|
|
- name: ng-lo.rom
|
|
dest: neocd/ng-lo.rom
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 65536
|
|
note: "Y-ZOOM ROM, NeoCD format"
|
|
source_ref: "retroarch/libneocd_libretro.info:33 (firmware6)"
|
|
|
|
# Y-ZOOM ROM, MAME naming
|
|
- name: 000-lo.lo
|
|
dest: neocd/000-lo.lo
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 65536
|
|
note: "Y-ZOOM ROM, MAME naming (same content as ng-lo.rom)"
|
|
source_ref: "retroarch/libneocd_libretro.info:36 (firmware7)"
|
|
|
|
# Front Loader BIOS, MAME naming
|
|
- name: front-sp1.bin
|
|
dest: neocd/front-sp1.bin
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 524288
|
|
note: "Front Loader BIOS, MAME naming (same content as neocd_f.rom)"
|
|
source_ref: "retroarch/libneocd_libretro.info:39 (firmware8)"
|
|
|
|
# Top Loader BIOS, MAME naming
|
|
- name: top-sp1.bin
|
|
dest: neocd/top-sp1.bin
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 524288
|
|
note: "Top Loader BIOS, MAME naming (same content as neocd_t.rom)"
|
|
source_ref: "retroarch/libneocd_libretro.info:42 (firmware9)"
|
|
|
|
# CDZ BIOS, MAME naming
|
|
- name: neocd.bin
|
|
dest: neocd/neocd.bin
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 524288
|
|
note: "CDZ BIOS, MAME naming (same content as neocd_z.rom)"
|
|
source_ref: "retroarch/libneocd_libretro.info:45 (firmware10)"
|
|
|
|
# Universe BIOS for CD systems
|
|
- name: uni-bioscd.rom
|
|
dest: neocd/uni-bioscd.rom
|
|
system: snk-neogeo-cd
|
|
required: false
|
|
size: 524288
|
|
note: "Universe BIOS CD, third-party multi-region BIOS (hack)"
|
|
source_ref: "retroarch/libneocd_libretro.info:48 (firmware11)"
|