mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-11-11 12:33:53 -06:00
Abdessamad Derraz
45db717db9
Each PCSX2 fork declares how its LoadBiosVersion reads the table: the strncmp length on RESET, the NUL test on names, EXTINFO, and what a read past the end does, from the source at the pin or the shipped libemucore.so for NetherSX2 and its Turnip builds. The Recalbox libretro PCSX2 and PCEE2 check no size, so their 4 to 8 MB bounds are gone, and the PCEE2 and ARMSX2 arcade images require the COH-H zone.
130 lines
5.8 KiB
YAML
130 lines
5.8 KiB
YAML
# libretro PCSX2 at 408e3b2 with Recalbox's BIOS path patch
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# Source: https://gitlab.com/recalbox/packages/libretro/libretro-pcsx2
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# Upstream: https://github.com/PCSX2/pcsx2
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emulator: "PCSX2 libretro (408e3b2, Recalbox)"
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type: libretro
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core_classification: community_fork
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bios_mode: agnostic
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source: "https://gitlab.com/recalbox/packages/libretro/libretro-pcsx2"
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upstream: "https://github.com/PCSX2/pcsx2"
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profiled_date: "2026-11-10"
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source_commit: "408e3b253847b25536ad77e4ab0c3aff6b8b896f"
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pin_frozen: "Recalbox, the only platform that ships it, builds this revision with package/libretro-pcsx2/0003-bios-path.patch (Recalbox package/libretro-pcsx2/libretro-pcsx2.mk:8 at tag 10.1.1). Later commits are not part of that build."
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pin_build:
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- platform: recalbox
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repo: "https://gitlab.com/recalbox/recalbox"
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revision: "10.1.1"
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path: "package/libretro-pcsx2/libretro-pcsx2.mk"
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variable: LIBRETRO_PCSX2_VERSION
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value: "408e3b253847b25536ad77e4ab0c3aff6b8b896f"
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core_version: "1.7.0"
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version_basis:
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kind: file
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path: "pcsx2/SysForwardDefs.h"
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pattern: 'PCSX2_VersionHi\s*=\s*(\d+);\s*\n.*PCSX2_VersionMid\s*=\s*(\d+);\s*\n.*PCSX2_VersionLo\s*=\s*(\d+);'
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format: "{1}.{2}.{3}"
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display_name: "Sony - PlayStation 2 (PCSX2 libretro 408e3b2 for Recalbox)"
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cores: [pcsx2]
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built_by: [recalbox]
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systems: [sony-playstation-2]
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bios_directory: "ps2/"
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notes: |
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The wxWidgets-era libretro port of PCSX2 1.7.0. Recalbox builds it for
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x86_64 only (Recalbox package/libretro-pcsx2/Config.in:3, Recalbox
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configs/recalbox-x86_64_defconfig:352), installs it as pcsx2_libretro.so
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(Recalbox package/libretro-pcsx2/libretro-pcsx2.mk:30-31) and lists it as
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the libretro core pcsx2 of the ps2 system (Recalbox
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package/recalbox-romfs2/systems/ps2/system.ini:54-58).
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The library version is git describe of the build tree, empty when the tree
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has no .git (cmake/Pcsx2Utils.cmake:38-52, 70-72, libretro/main.cpp:447-448).
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Its patch moves the BIOS scan from pcsx2/bios to ps2 below the system
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directory (libretro/main.cpp:264), /recalbox/share/bios/ps2 on Recalbox.
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BIOS detection is filename-agnostic: every file in ps2/ whose romdir holds
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a RESET and a ROMVER entry is listed, no size or hash is checked, and the
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list fills the pcsx2_bios core option whose default is the first BIOS found
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(libretro/main.cpp:262-303). Without one, retro_init returns before it
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creates the emulator and no game starts (libretro/main.cpp:282-287,
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325-328). The companion files take their path from the selected BIOS.
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GameIndex.yaml and the widescreen, no-interlacing and 60 fps patch archives
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are compiled in (pcsx2/CMakeLists.txt:338-367,
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pcsx2/gui/AppGameDatabase.cpp:20-24, pcsx2/Patch.cpp:30-32). DEV9 is the
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null device (pcsx2/DEV9/DEV9.cpp:59-64), so no hard disk, EEPROM or flash
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file is read. Memory cards and pnach patches under system/pcsx2 are user
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files.
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files:
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- name: "<bios>.bin"
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found_by: content
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path: "ps2/<bios>.bin"
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required: true
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validation: [romdir]
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romdir:
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reset_compare: 5
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missing_reset: rejects
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terminated_names: false
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extinfo: false
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unreadable_romver: rejects
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truncated_walk: rejects
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offset_width: 32
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description: "PS2 BIOS binary"
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config_key: "pcsx2_bios"
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source_ref: "source libretro/main.cpp:262-303, source libretro/main.cpp:317-328, source libretro/main.cpp:653-654, source pcsx2/ps2/BiosTools.cpp:74-167, 261-319, 340-356, source common/src/Utilities/pxStreams.cpp:74-93, source common/include/Utilities/Exceptions.h:346, source pcsx2/MemoryTypes.h:21"
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note: >
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Any file in ps2/ whose name holds a dot (the *.* mask of wxDir) and
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whose romdir holds RESET and ROMVER, picked by the pcsx2_bios core
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option. No size is checked. The table is read 16 bytes at a time from
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the start of the file until a name starting with RESET, within 512 Ki
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entries, then walked to an entry named ROMVER, whose 14 bytes are read
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at the sum of the sizes before it. Every read past the end of the file
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throws EndOfStream and the file is not listed. The first 4 MB are
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mapped.
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- name: "<bios>.rom1"
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path: "ps2/<bios>.rom1"
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required: false
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description: "DVD player ROM"
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source_ref: "source pcsx2/ps2/BiosTools.cpp:191-229, 294, source pcsx2/MemoryTypes.h:22"
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note: "Tries <bios path>.rom1, then the BIOS path with its extension replaced by rom1. Skipped when neither exists. The first 256 KB are read."
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- name: "<bios>.rom2"
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path: "ps2/<bios>.rom2"
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required: false
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description: "Chinese ROM extension"
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source_ref: "source pcsx2/ps2/BiosTools.cpp:191-229, 295, source pcsx2/MemoryTypes.h:23"
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note: "Same naming as rom1. Present only on Chinese consoles. The first 512 KB are read."
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- name: "<bios>.erom"
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path: "ps2/<bios>.erom"
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required: false
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description: "DVD player extension ROM"
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source_ref: "source pcsx2/ps2/BiosTools.cpp:191-229, 296, source pcsx2/MemoryTypes.h:24"
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note: "Same naming as rom1. The first 0x1C0000 bytes are read."
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- name: "<bios>.nvm"
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path: "ps2/<bios>.nvm"
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required: false
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hle_fallback: true
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size: 1024
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description: "NVRAM / EEPROM data"
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source_ref: "source pcsx2/CDVD/CDVD.cpp:142-187, source libretro/main.cpp:634-642, source libretro/language_injector.cpp:231-262"
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note: >
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Read at the BIOS path with the extension replaced by nvm. A file shorter
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than 1024 bytes is replaced by a blank one with a dummy i.LINK ID.
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Without it the fast boot option is ignored. When it exists and the BIOS
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is in the language table, the system language option is written into it.
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- name: "<bios>.mec"
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path: "ps2/<bios>.mec"
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required: false
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hle_fallback: true
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size: 4
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description: "Mechacon version"
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source_ref: "source pcsx2/CDVD/CDVD.cpp:96-126"
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note: "Read at the BIOS path with the extension replaced by mec. Written as bytes 03 06 02 00 when missing."
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