Release 1.9.0

5DO 1.9.0

Released: 2026-11-14

5DO 1.9.0 is a feature and interoperability release. It adds English/German localization, external metadata and media attachments, physical optical-drive boot, a Windows DirectInput/HID gamepad backend, a controller preview, auto-crop, display-sleep inhibition, Lua input scripting with an editable input timeline, and best-effort 4DO .4dosav import/export.

Highlights

• Localization. Embedded English and German catalogs, Settings > General > UI language, --locale, and --list-locales. The translated smoke marker is locale=de / firstMenuHeader=Datei.
• Metadata and media. metadata lookup caches an external catalog; metadata media and the Game Metadata window attach, remove, and open manual media files.
• Physical optical drives. File > Boot Optical Drive... and drive-root CLI paths read the host's 2048-byte sectors. Data discs boot; CD-DA from a physical drive is not exposed yet.
• Gamepads. Windows DirectInput/HID enumeration adds axes, POV hats, and triggers alongside XInput. Input Bindings draws a live 3DO pad. --gamepad-probe diagnoses the active source.
• Presentation. Auto-crop uses 4DO's 25% detector and a one-second hysteresis. Windows display-sleep inhibition runs while a game is active. OpenGL framebuffer failures fall back to the CPU presenter.
• TAS and state interop. Lua input scripts run under MoonSharp's hard sandbox. movie timeline export|set|apply and Emulation > Input Timeline... edit movies. state import-4do / state export-4do provide best-effort 4DO interop.

Fixes

• Invalid FILETIME values on removable/network volumes no longer abort the library scan.
• External metadata with a null title/path no longer matches every query; null records are dropped and metadata lookup --write preserves media and the local disc path.
• Empty optical drives dispose their device handle; the DirectInput enumeration callback stays rooted.
• Dependencies updated (Meziantou.Analyzer 3.0.340, CHDSharp 1.7.0, SkiaSharp 4.156.0, Microsoft.NET.Test.Sdk 18.12.0, MoonSharp 2.0.0).

Download

System	Bundle
Windows x64	5do-1.9.0-win-x64.zip
Windows arm64	5do-1.9.0-win-arm64.zip
Linux x64	5do-1.9.0-linux-x64.tar.gz
Linux arm64	5do-1.9.0-linux-arm64.tar.gz
macOS x64	5do-1.9.0-osx-x64.dmg
macOS arm64	5do-1.9.0-osx-arm64.dmg

See the release page for SHA256SUMS.txt.

Requirements and limits

• The .NET 11 Runtime is required; bundles do not include it.
• Supply a legally obtained 3DO BIOS and disc images.
• Windows x64 is the validated GPU target. Linux GPU presentation remains preview/best-effort.
• Physical optical drive and DirectInput evidence still needs the relevant hardware.
• 4DO state import/export is best-effort and does not guarantee native compatibility.