Skip to content
RetroBIOS

UAE4ALL (libretro, Chips-fr)

UAE4ALL (libretro, Chips-fr) emulates Commodore Amiga. It reads 1 file, 1 of them required: without a required file it does not start games.

About this profile
Detail Value
Type libretro
Classification Community fork
Source https://github.com/Chips-fr/uae4all-rpi
Version 0.7
Revision Chips-fr/uae4all-rpi@ae7eb74cfbe7
Built by recalbox, under its core name. The libretro buildbot does not publish this build.
Profiled 2026-10-20
Profile YAML, JSON
Cores uae4all
Systems Commodore Amiga
Install this emulator's files

The installer finds your setup and its BIOS folder, then downloads only the files this emulator reads there and checks each one.

Open the Start menu. Type PowerShell and open it. Paste the line. Press Enter.

PowerShell
&([scriptblock]::Create((irm https://raw.githubusercontent.com/Abdess/retrobios/main/install.ps1))) --emulator uae4all-rpi
Technical notes

Chips-fr's libretro port of UAE4ALL, an Amiga 500 emulator with the FAME 68000 core. It reports itself as uae4all 0.7 and loads adf, adz and zip images (libretro/core/libretro-core.cpp:425-428). Recalbox builds it from this commit with Makefile.libretro at tag 10.1.1 (recalbox package/libretro-uae4all/libretro-uae4all.mk:8-9, 19-22). Its two patches switch the CPU core to Cyclone and lower the cycle unit, neither touches file loading.

The Kickstart path is fixed: retro_init takes the frontend system directory (libretro/core/libretro-core.cpp:309-313) and the option update joins it with A500_ROM, kick34005.A500 (libretro/core/libretro-core.cpp:76, 85-88, 284). No other name is tried. The joined path is cut at 63 characters (romfile[64], src/disk.cpp:50). Recalbox sets the system directory of every Amiga system to bios/amiga/bios (recalbox projects/configgen/configgen/generators/libretro/libretroRetroarch.py:517-519).

read_kickstart (src/memory.cpp:853-888) fills a 512 KB ROM space (src/include/memory.h:53). It accepts 8 KB (A1000 bootstrap), 256 KB (mirrored) or 512 KB, and rejects any other size. A checksum mismatch only writes a log line (src/memory.cpp:836-851). No hash is checked, so any Kickstart of an accepted size works under that name. An AMIROMTYPE1 header is skipped but decode_cloanto_rom is empty (src/memory.cpp:831-834, 860-865), so encrypted Amiga Forever ROMs do not boot and rom.key is never read. extfile is never set, so no extended ROM is loaded (src/memory.cpp:890-896).

Without the ROM the core shows "No Kickstart file found." and runs the UAE ersatz replacement (src/memory.cpp:1234-1240, src/ersatz.cpp:35-41). It stubs a few exec calls and boots the bootblock in DF0 with read-only trackdisk access, so only self-booting trackloader disks start, and the core quits with no disk in DF0 (src/ersatz.cpp:75-112).

A .uae content file is read for its floppy0= and floppy1= lines only (libretro/core/libretro-core.cpp:101-128, 281-282). The data/ assets (menu images, click.wav, music.mod, vkbd bitmaps) belong to the standalone GUI. Makefile.libretro defines NO_VKBD (Makefile.libretro:28), which stubs vkbd_init (src/vkbd/vkbd.cpp:17-23), and does not compile src/menu/menu.cpp or src/sound.cpp (Makefile.libretro:100-132). The bios/uae_data folder the Recalbox package creates is never opened by this core (recalbox package/libretro-uae4all/libretro-uae4all.mk:27).

Files

Section titled “Files”

1 file: 1 required, 0 optional. 1 has an HLE fallback.

In this collection: 1 in repo and 0 missing.

Required

Section titled “Required”

kick34005.A500 required in repo HLE fallback

Kickstart 1.3 rev 34.5, A500

Next steps

Section titled “Next steps”
.

Maintained by Abdess on GitHub. Report a problem.

Packs from release v2026.10.10, .

MIT for the tooling and metadata. BIOS and firmware files are third-party system software, preserved for personal backup, archival and interoperability.