mirror of
https://github.com/Abdess/retroarch_system.git
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162 lines
7.5 KiB
YAML
162 lines
7.5 KiB
YAML
emulator: PCEE2
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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://github.com/WizzardSK/pcee2-libretro"
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upstream: "https://github.com/PCSX2/pcsx2"
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profiled_date: "2026-09-03"
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source_commit: "93aded21a46e60f3def27b2590eccb49d30d6a05"
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upstream_commit: "6db638dc0373769b4c5d5b5dd7ed6da641b9a18e"
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core_version: "v2.7.523"
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display_name: "Sony - PlayStation 2 (PCEE2)"
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cores: [pcee2]
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systems: [sony-playstation-2]
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bios_directory: "pcsx2/bios/"
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resources_directory: "pcsx2/resources/"
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data_directories:
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- ref: pcsx2-resources
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destination: "pcsx2/resources"
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source_ref: "pcee2-libretro/Libretro.cpp:414-442, pcsx2/Pcsx2Config.cpp:2388-2400"
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notes: |
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libretro port of current PCSX2, merged up to upstream 6db638dc (v2.7.523,
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pcee2-libretro/upstream.version); the build reports that version as
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library_version. Everything the port adds lives in pcee2-libretro/ and in
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the libretro renderer bridges; the BIOS, CDVD, patch and database code is
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upstream PCSX2.
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InitializeConfig maps the PCSX2 folder layout under <system>/pcsx2:
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AppRoot and DataRoot are that directory, Resources and UserResources are
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pcsx2/resources, Settings is pcsx2/inis, and EmuFolders::LoadConfig
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derives bios, memcards, cheats, patches, textures, gamesettings, cache,
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snaps, sstates, logs, covers, inputprofiles and videos from DataRoot
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(pcee2-libretro/Libretro.cpp:414-428, pcsx2/Pcsx2Config.cpp:2319-2336).
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A standalone PCSX2.ini dropped in pcsx2/inis contributes nine emulation
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sections as the baseline (Libretro.cpp:504-535); the core options and the
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port overrides apply on top.
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BIOS detection is filename-agnostic. The core option pcsx2_bios lists every
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file of pcsx2/bios that IsBIOS accepts: a romdir whose RESET entry is
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followed by a readable ROMVER, whose fifth character gives the zone (Japan,
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USA, Europe, Asia, China, T10K, COH-H, Test, Free). With the option on
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auto, SettingsOverride selects the first accepted file (Libretro.cpp:578-618,
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pcsx2/ps2/BiosTools.cpp:80-197, 284-294). When no BIOS is configured or the
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configured name is missing, LoadBIOS falls back to FindBiosImage, which
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also filters on size between 4 and 8 MB (BiosTools.cpp:258-282, 317-369).
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The image is read into the 4 MB ROM region; a file shorter than 2465792
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bytes turns off the OSDSys parameter HLE. No hash is matched. Booting with
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no content starts the BIOS (Libretro.cpp:2090-2096).
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Companions derive from the selected image: rom1 and rom2 are tried as the
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full name plus extension, then with the extension replaced, and are skipped
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when absent; the nvm is read at the replaced extension and rebuilt with
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region and language defaults when missing or blank; the mec is written back
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as 0x00020603 when it cannot be read (BiosTools.cpp:214-241, 366-367,
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pcsx2/CDVD/CDVD.cpp:136-205).
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The shaders, four interface fonts and GameIndex.yaml are built into the
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core (cmake/EmbedResources.cmake:19-31, pcsx2/CMakeLists.txt:1137-1157)
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and win over the copies on disk unless PCEE2_EXTERNAL_RESOURCES is set in
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the environment (pcsx2/EmbeddedResources.cpp:8-12, pcsx2/GS/Renderers/Common/GSDevice.cpp:372-387,
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pcsx2/ImGui/ImGuiManager.cpp:470-492, pcsx2/GameDatabase.cpp:1021-1050,
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Libretro.cpp:451-473). A missing resources directory is a warning, not a
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failure (Libretro.cpp:433-442). What the directory still supplies to this
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build is patches.zip. RedumpDatabase.yaml is read only by the Qt game
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summary (pcsx2/GameDatabase.cpp:1197-1210 has no caller in the core),
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game_controller_db.txt only by the SDL input source the port disables
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(Libretro.cpp:561-562, pcsx2/Input/SDLInputSource.cpp:701-706), the
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achievement sounds only with achievements enabled, which no core option or
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adopted ini section does (pcsx2/Achievements.cpp:943-951), and
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fullscreenui/no-save.png only by the save state selector, whose hotkeys the
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port clears (Libretro.cpp:564, pcsx2/ImGui/ImGuiOverlays.cpp:1461-1462).
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The port supplies Roboto alone to ImGui, so no emoji font is read.
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Per-game user files keep their PCSX2 locations under <system>/pcsx2:
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cheats and patches as <serial>_<crc>.pnach (pcsx2/Patch.cpp:333-363),
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gamesettings/<serial>_<crc>.ini (pcsx2/VMManager.cpp:830-833),
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textures/<serial>/replacements (pcsx2/GS/Renderers/HW/GSTextureReplacements.cpp:262-264),
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memcards/*.ps2, which the core creates and lists in the memory card
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options (Libretro.cpp:620-640). The DEV9 HDD image is named in the ini and
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created on demand.
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files:
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- name: "<bios>.bin"
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path: "pcsx2/bios/<bios>.bin"
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description: "PS2 BIOS image"
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min_size: 4194304
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max_size: 8388608
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required: true
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validation: [size]
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source_ref: "pcee2-libretro/Libretro.cpp:578-618, pcsx2/ps2/BiosTools.cpp:16-17, pcsx2/ps2/BiosTools.cpp:80-197, pcsx2/ps2/BiosTools.cpp:258-294, pcsx2/ps2/BiosTools.cpp:317-369"
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note: >
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Any file of pcsx2/bios whose romdir carries RESET and ROMVER. The 4 to
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8 MB filter applies in FindBiosImage only; the core option scan and the
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auto selection accept any size that passes the romdir check.
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- name: "<bios>.rom1"
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path: "pcsx2/bios/<bios>.rom1"
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description: "DVD player ROM"
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max_size: 4194304
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required: false
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source_ref: "pcsx2/ps2/BiosTools.cpp:214-241, pcsx2/ps2/BiosTools.cpp:366, pcsx2/MemoryTypes.h:13"
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note: >
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Tried as <bios>.bin.rom1 then <bios>.rom1, opened case-insensitively,
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skipped with a console line when absent.
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- name: "<bios>.rom2"
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path: "pcsx2/bios/<bios>.rom2"
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description: "Chinese ROM extension"
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max_size: 4194304
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required: false
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source_ref: "pcsx2/ps2/BiosTools.cpp:214-241, pcsx2/ps2/BiosTools.cpp:367, pcsx2/MemoryTypes.h:14"
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note: >
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Same lookup as rom1. Present on Chinese region consoles only.
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- name: "<bios>.nvm"
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path: "pcsx2/bios/<bios>.nvm"
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description: "Console NVRAM (region parameters, language, iLink ID, OSD settings)"
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size: 1024
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required: false
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hle_fallback: true
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source_ref: "pcsx2/CDVD/CDVD.cpp:47, pcsx2/CDVD/CDVD.cpp:136-188, pcsx2/CDVD/CDVD.cpp:207-238"
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note: >
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Read at <bios>.nvm, rebuilt in memory with region and language defaults
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when it is missing, short, or has a blank config block, and written back
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on save.
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- name: "<bios>.mec"
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path: "pcsx2/bios/<bios>.mec"
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description: "Mechacon version, one u32"
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size: 4
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required: false
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hle_fallback: true
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source_ref: "pcsx2/CDVD/CDVD.cpp:49, pcsx2/CDVD/CDVD.cpp:190-204"
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note: >
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Read at <bios>.mec; written as 0x00020603 when it cannot be read.
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- name: "patches.zip"
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path: "pcsx2/resources/patches.zip"
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description: "Built-in game patch archive (pnach per serial and CRC)"
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required: false
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bundled: true
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category: game_data
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source_ref: "pcsx2/Patch.cpp:117, pcsx2/Patch.cpp:289-317, pcsx2/Patch.cpp:365-405"
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note: >
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Opened read only from the resources directory when a game's patches are
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enumerated and searched for <serial>_<crc>.pnach, then <crc>.pnach. Files
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in the patches folder take precedence. A failure to open is reported once
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on screen. Not part of the PCSX2 source tree: PCSX2 builds fetch it from
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the pcsx2_patches releases, a rolling asset rebuilt on every patch commit.
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- name: "eeprom.dat"
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description: "DEV9 network adapter EEPROM"
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size: 64
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required: false
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hle_fallback: true
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source_ref: "pcsx2/DEV9/DEV9.cpp:60-73, pcsx2/DEV9/DEV9.cpp:97-158"
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note: >
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Opened read-write and mapped from the process working directory by
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DEV9init; the built-in eeprom table is used when it cannot be opened.
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