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https://github.com/Abdess/retroarch_system.git
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Every profile now has: - profiled_date: date of source code analysis - core_version: version from libretro-core-info .info files - display_name: human-readable name from .info files 260/260 profiles complete. 294/294 libretro cores covered. Standalone emulators (cemu, rpcs3, xemu, vita3k) versioned manually.
114 lines
4.6 KiB
YAML
114 lines
4.6 KiB
YAML
emulator: px68k
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type: libretro
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source: "https://github.com/libretro/px68k-libretro"
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profiled_date: "2026-03-18"
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core_version: "0.15+"
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display_name: "Sharp - X68000 (PX68k)"
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cores:
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- px68k
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systems:
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- sharp-x68000
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# PX68K is a Sharp X68000 emulator (originally Keropi) ported to libretro.
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# All ROM files are loaded from <system_dir>/keropi/ subdirectory.
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#
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# ROM loading (libretro.c:848-893 WinX68k_LoadROMs):
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# 1. Base path set to <system_dir>/keropi/ via file_setcd(winx68k_dir) at line 969
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# 2. IPL ROM: iterates BIOSFILE[] = {iplrom.dat, iplrom30.dat, iplromco.dat, iplromxv.dat}
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# and opens the first file found. Reads 0x20000 bytes (128 KB) into IPL buffer.
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# Returns 0 (failure) if none found -- core will not start.
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# 3. SCSI check (WinX68k_SCSICheck): if IPL contains SCSI vectors at offset 0x30600-0x30c00,
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# patches a fake SCSI BIOS stub at $fc0000 with "Human68k" signature.
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# 4. Byte-swaps IPL in 16-bit pairs (big-endian ROM on little-endian host).
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# 5. Font ROM: opens cgrom.dat, falls back to cgrom.tmp if not found.
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# Reads 0xc0000 bytes (768 KB) into FONT buffer. Returns 0 if neither exists.
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#
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# SRAM (x68k/sram.c:50-73):
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# sram.dat is 16 KB of battery-backed SRAM, loaded on init and saved on cleanup.
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# Not a BIOS -- runtime state. Created automatically if missing.
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#
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# Directory layout expected:
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# <system_dir>/keropi/iplrom.dat (or iplrom30.dat, iplromco.dat, iplromxv.dat)
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# <system_dir>/keropi/cgrom.dat (or cgrom.tmp)
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# <system_dir>/keropi/sram.dat (auto-created)
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# <system_dir>/keropi/config (auto-created, core settings)
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files:
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# IPL ROM -- the main system BIOS. The core tries four filenames in order and
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# uses the first one found. Only one is needed. iplrom.dat is the original X68000,
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# iplrom30.dat is X68030, iplromco.dat is X68000 Compact, iplromxv.dat is X68000 XVI.
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- name: "iplrom.dat"
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path: "keropi/iplrom.dat"
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size: 131072
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required: true
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note: >
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X68000 IPL ROM (original model). 128 KB, loaded at IPL buffer offset 0x20000.
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The core tries iplrom.dat first, then iplrom30.dat, iplromco.dat, iplromxv.dat
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in order. At least one must be present or the core fails to start.
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source_ref: "libretro.c:850-867"
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- name: "iplrom30.dat"
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path: "keropi/iplrom30.dat"
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size: 131072
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required: false
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note: >
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X68030 IPL ROM. Alternative to iplrom.dat for X68030 model emulation.
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Only used if iplrom.dat is not found.
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source_ref: "libretro.c:851"
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- name: "iplromco.dat"
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path: "keropi/iplromco.dat"
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size: 131072
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required: false
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note: >
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X68000 Compact IPL ROM. Alternative to iplrom.dat.
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Only used if iplrom.dat and iplrom30.dat are not found.
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source_ref: "libretro.c:851"
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- name: "iplromxv.dat"
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path: "keropi/iplromxv.dat"
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size: 131072
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required: false
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note: >
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X68000 XVI IPL ROM. Last fallback in the IPL search order.
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Only used if the three other IPL variants are not found.
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source_ref: "libretro.c:851"
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# Font ROM -- character generator ROM for text rendering.
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- name: "cgrom.dat"
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path: "keropi/cgrom.dat"
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size: 786432
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required: true
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note: >
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X68000 character generator ROM. 768 KB, provides the font glyphs for text
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display. If missing, the core falls back to cgrom.tmp (user-generated font
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cache). Core fails to start if neither file exists.
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source_ref: "libretro.c:853, libretro.c:881-891"
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- name: "cgrom.tmp"
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path: "keropi/cgrom.tmp"
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size: 786432
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required: false
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note: >
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Alternative font file, used as fallback when cgrom.dat is absent.
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Typically a font cache generated by the emulator itself on other platforms.
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source_ref: "libretro.c:854, libretro.c:884-888"
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notes:
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subdirectory: >
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All files must be placed in <system_dir>/keropi/ subdirectory. The core sets
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this path at init via sprintf(retro_system_conf, "%s/keropi", system_dir) and
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then calls file_setcd() to make it the base for all file_open_c() calls.
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ipl_selection: >
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The four IPL ROM variants correspond to different X68000 hardware revisions.
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The core uses whichever it finds first in order: iplrom.dat (original X68000),
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iplrom30.dat (X68030), iplromco.dat (Compact), iplromxv.dat (XVI). Most users
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only need iplrom.dat. The IPL also determines SASI vs SCSI disk support based
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on vectors found at offsets 0x30600-0x30c00.
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sram: >
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sram.dat (16 KB) is read/write runtime state, not a BIOS file. The core creates
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it automatically on first shutdown. It stores X68000 NVRAM settings (boot count,
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boot device preferences, SRAM-resident programs).
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