XRoar reads a ROM by name from the directories of rompath. The entries
take their file name as path, relative to ~/.xroar/roms or
${prefix}/share/xroar/roms, and rompath and -rompath are declared as
search lists.
Batocera records its rompath line, Recalbox -rompath bios/<system>
(the placeholder its extractor already writes), RetroBat its -rompath
as two records, bios/dragon and bios/coco for coco. An entry whose
name the platform list does not declare follows the launch its
profile system is listed under: Recalbox lists mc10.rom under
trs80coco, so alice.rom is read there.
Batocera ROMs move from the BIOS root to bios/xroar, Recalbox ROMs to
bios/dragon and bios/trs80coco, RetroBat ROMs to bios/dragon and
bios/coco. RetroDECK and RetroPie keep them at the BIOS root.
The scraper now records, from configgen at the pinned tag, the names each Recalbox launcher tries and where it hands them: the Hatari TOS cascades (standalone, hatari and hatarib cores), GSplus, Amiberry kickstarts, the PCSX2 region choice, the Dolphin IPL presence test, xemu, the mupen64plus 64DD IPL, the Mini vMac boot disk and the o2em_bios option. The system_directory libretroRetroarch gives each core, and the per-system overrides after it, are passes_path records.
Abdessamad Derraz