nullDC Controller Support: Requires JoyToKey / x360ce Workarounds — Better: Use Redream or flycast

nullDC (Dreamcast emulator) has no native gamepad/joystick support. It reads only keyboard/mouse input.

Workarounds (Windows)

1. JoyToKey (Free/Paid): Maps controller buttons → keyboard keys. Create profile: Start=Enter, A=Space, D-pad=Arrows, etc. Run in background.
2. x360ce (XInput wrapper): Makes DirectInput controllers appear as XInput (Xbox 360). Some nullDC builds recognize XInput; place xinput1_3.dll in nullDC folder.
3. AntiMicroX (Open source): Modern JoyToKey alternative; per-game profiles, macros.

Limitations

• Analog stick dead zones / sensitivity hard to tune via keyboard mapping.
• Pressure-sensitive triggers (Dreamcast) → digital keyboard = lost nuance.
• Per-game config often needed.
• Plugins exist but are outdated/unstable.

Better Alternatives: Modern Dreamcast Emulators

• Redream (Paid/Pro): Excellent native XInput/DS4/Switch Pro support, high compatibility, simple UI. Best choice.
• flycast (Libretro/Standalone): Active development, Vulkan, netplay, great controller config. Runs in RetroArch.
• Demul (Legacy): Older, plugin-based, higher hardware req, but good compatibility.

Recommendation: Switch to Redream or flycast. Native controller support saves hours of mapping frustration.