mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-23 20:29:06 -05:00
Abdessamad Derraz
8b8d94e331
profile_sync --all reported 18 repositories the forge answers under another owner or name. Each pin resolves in the renamed repository, so the URLs change and the pins stay. flycast2021 builds from metallic77/flycast 603814c9 (ROCKNIX package.mk), whose upstream libretro/flycast now answers as libretro/parallel-dc with 4c293f30 still in its master history.
65 lines
2.8 KiB
YAML
65 lines
2.8 KiB
YAML
emulator: Reicast
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type: standalone
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core_classification: community_fork
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source: "https://github.com/skmp/reicast-emulator"
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upstream: "https://github.com/skmp/reicast-emulator"
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profiled_date: "2026-10-17"
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source_commit: "ad61f95dd6b4c6218846a25de6194550311a5d28"
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pin_frozen: "Recalbox 10.1.1 builds this revision (package/reicast/reicast.mk REICAST_VERSION). Later commits on reicast-emulator are not part of that build."
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core_version: "Git"
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display_name: "Sega - Dreamcast (Reicast)"
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cores:
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- "reicast"
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systems:
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- "sega-dreamcast"
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notes: |
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Dreamcast emulator descended from nullDC. The Linux build is compiled
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for one platform, and the default is dreamcast, which sets the ROM prefix
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dc_, a 2 MB boot ROM, a 128 KB flash and NVR_OPTIONAL 0
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(ref: core/types.h:209-217).
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LoadRomFiles() tries dc_boot.bin, dc_boot.bin.bin, dc_bios.bin and
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dc_bios.bin.bin for the boot ROM, then dc_nvmem.bin, dc_flash_wb.bin,
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dc_flash.bin and dc_flash.bin.bin for the flash
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(ref: core/hw/holly/sb_mem.cpp:30-51). Each candidate is accepted
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when a full chip's worth of bytes can be read from it
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(ref: core/hw/flashrom/flashrom.h:39-49, 61-99). No hash is checked.
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With NVR_OPTIONAL 0 a missing flash fails LoadRomFiles() the same way
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a missing boot ROM does.
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When LoadRomFiles() fails, or the reios setting is on, the core starts
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its HLE BIOS instead and loads only the flash, if present
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(ref: core/nullDC.cpp:183-200, core/hw/holly/sb_mem.cpp:58-64).
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Upstream resolves the directory as <data dir>/data/, the data dir
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being $XDG_DATA_HOME/reicast or ~/.local/share/reicast, then each
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$XDG_DATA_DIRS entry plus /reicast (ref: core/stdclass.cpp:83-100,
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core/linux-dist/main.cpp:287-326, 355-379). Recalbox patches
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nullDC.cpp to read and write both files in /recalbox/share/bios/dc/,
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which is the path given below.
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files:
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- name: "dc_boot.bin"
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path: "dc/dc_boot.bin"
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aliases: ["dc_boot.bin.bin", "dc_bios.bin", "dc_bios.bin.bin"]
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system: "sega-dreamcast"
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required: false
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hle_fallback: true
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min_size: 2097152
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validation: [size]
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description: "Dreamcast boot ROM"
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source_ref: "core/hw/holly/sb_mem.cpp:20, 30-36, core/types.h:211, 215"
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note: "First of the four names that reads 2097152 bytes wins. Missing, the HLE BIOS runs."
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- name: "dc_nvmem.bin"
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path: "dc/dc_nvmem.bin"
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aliases: ["dc_flash_wb.bin", "dc_flash.bin", "dc_flash.bin.bin"]
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system: "sega-dreamcast"
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required: false
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hle_fallback: true
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min_size: 131072
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validation: [size]
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description: "Dreamcast flash memory"
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source_ref: "core/hw/holly/sb_mem.cpp:22-23, 37-48, 58-64, core/types.h:212, 217"
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note: "Tried as dc_nvmem.bin, dc_flash_wb.bin, dc_flash.bin, then dc_flash.bin.bin. Written back as dc_nvmem.bin on exit. Missing, LoadRomFiles() fails even with a boot ROM present and the HLE BIOS runs."
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