- Near full Game Boy Advance hardware support[1].
- Fast emulation. Known to run at full speed even on low end hardware, such as netbooks.
- Qt and SDL ports for a heavy-weight and a light-weight frontend.
- Save type detection, even for flash memory size[2].
- Real-time clock support, even without configuration.
- A built-in BIOS implementation, and ability to load external BIOS files.
- Turbo/fast-forward support by holding Tab.
- Frameskip, configurable up to 9.
- Screenshot support.
- 9 savestate slots. Savestates are also viewable as screenshots.
- Video and GIF recording.
- Remappable controls for both keyboards and gamepads.
- Loading from ZIP files.
- IPS and UPS patch support.
- Game debugging via a command-line interface (not available with Qt port) and GDB remote support.
mGBA v0.5.1 Changelog:
Bugfixes:
* Core: Fix importing save games as read-only
* FFmpeg: Fix encoding AAC
* GB: Fix invalid STOP behavior on Game Boy Color
* GB: Initialize audio properly
* GB: Properly clear KEY1 bit 0 when switching speeds
* GB: Properly unload save files when unloading a ROM
* GB, GBA: Fix emulator hardlocking when halting with IRQs off
* GB MBC: Fix MBC7 when size is incorrectly specified
* GB MBC: Fix RTC access when no save file is loaded
* GB SIO: Don’t auto-clock external shift clock
* GB Video: Setting LYC=LY during mode 2 should trigger an IRQ
* GB Video: Fix video frames getting missed when LCDC is off
* GB Video: Clear screen when LCDC is off
* GBA Cheats: Fix holding onto pointers that may get invalidated
* GBA Cheats: Fix key-activated CodeBreaker cheats
* GBA Cheats: Fix uninitialized memory getting freed when saving
* GBA Hardware: Improve Game Boy Player rumble behavior
* GBA Memory: Fix several unused I/O register read values
* GBA Savedata: Fix loading savestates with 512Mb Flash saves
* LR35902: Fix events running with the wrong cycle active
* Qt: Fix “close” button on Overrides view
* Qt: Fix saving overrides
* Qt: Fix directory set unloading when replacing the ROM
* Qt: Fix patch loading
* Qt: Fix crash when saving an override if a game isn’t loaded
* Qt: Fix showing default display driver as OpenGL (force 1.x)
* SDL: Attach rumble in SDL frontend
* Util: Fix PNG identification on files too small to be a PNG
Misc:
* All: Only update version info if needed
* All: Split out install locations for Libretro and OpenEmu
* FFmpeg: Encoding cleanup
* GB: Reset active region when reloading ROM
* GB Memory: Initialize RAM pattern for GBC
* GB Video: Improved video timings
* Qt: Manage window sizes slightly better
* Qt: Remember scale option independent of core dimensions
