RetroRun is a libretro frontend designed specifically for Anbernic devices, including RG351 M/P/V/MP, RG552, and RG503. Enhance your gaming experience with RetroRun.

To use RetroRun you need ro tun first rg351p-js2box. In a way similar to this:

rm /dev/input/by-path/platform-odroidgo2-joypad-event-joystick || true
echo 'creating fake joypad'
/usr/bin/rg351p-js2xbox --silent -t oga_joypad &
sleep 0.2
ln -s /dev/input/event3 /dev/input/by-path/platform-odroidgo2-joypad-event-joystick
chmod 777 /dev/input/by-path/platform-odroidgo2-joypad-event-joystick
sleep 0.2
retrorun --triggers  -s /storage/roms/"<rom_name>" -d /roms/bios <libretro_core> <system_name>
sleep 0.5
rm /dev/input/by-path/platform-odroidgo2-joypad-event-joystick
kill $(pidof rg351p-js2xbox)

• Flycast, Flycast 2021
• ParaLLEl N64
• SwanStation
• DuckStation
• PCSX-ReARMed
• mGBA
• VBA-M
• Virtual Jaguar
• DOSBox-pure
• DOSBox-core
• Beetle VB
• Yaba Sanshiro
• Snes9x, Snes9x 2002, Snes9x 2005 Plus, Snes9x 2010
• Genesis Plus GX
• PicoDrive
• PPSSPP
• Stella, Stella2014

This branch of RetroRun includes several features:

1. Integration of the external library libgo2 (https://github.com/OtherCrashOverride/libgo2) into RetroRun.
2. Tate mode support (useful for Naomi and Atomiswave games).
3. Right analog support for ParaLLEl N64, including C buttons management.
4. Option to display FPS in the logs using the -f flag.
5. Display FPS on the screen using the SELECT + Y button combination.
6. Core configuration via file, with default location at "/storage/.config/distribution/configs/retrorun.cfg", but customizable via the -c parameter.
7. Management of different aspect ratios.
8. Support for GPIO/USB joypad.
9. On-Screen Display (OSD) with explanatory images.
10. Info Menu displaying device and game information.

These parameters can be set in the retrorun.cfg file:

retrorun_screenshot_folder = Defines the folder in which screenshots are saved. Default: /storage/roms/screenshots

retrorun_fps_counter = true | false

• true: Display the FPS counter.
• false: Do not display the FPS counter. Default: false

retrorun_aspect_ratio = 2:1 | 4:3 | 5:4 | 16:9 | 16:10 | 1:1 | 3:2 | auto

• 2:1: Aspect ratio 2:1.
• 4:3: Aspect ratio 4:3.
• 5:4: Aspect ratio 5:4.
• 16:9: Aspect ratio 16:9.
• 16:10: Aspect ratio 16:10.
• 1:1: Aspect ratio 1:1.
• 3:2: Aspect ratio 3:2.
• auto: Automatically determine the aspect ratio. Default: provided by the core

retrorun_force_left_analog_stick = true | false

• true: Force the left analog stick to act like the D-pad.
• false: Do not force the left analog stick to act like the D-pad. Default: false

retrorun_auto_save = true | false

• true: Enable auto-save.
• false: Disable auto-save. Default: false

retrorun_auto_load = true | false

• true: Enable auto-load.
• false: Disable auto-load. Default: same as auto-save

retrorun_loop_60_fps = true | false

• true: Restrict the game loop to not exceed 60 FPS.
• false: Do not restrict the game loop to 60 FPS. Default: true

retrorun_audio_buffer = -1, 1, 256, 512, 1024, 2048, ...

• -1: Audio buffer size linked to original FPS of the game.
• 1, 256, 512, 1024, 2048, ...: Specific audio buffer size. Default: -1

retrorun_swap_l1r1_with_l2r2 = true | false

• true: Swap the triggers L1 and L2 with R1 and R2.
• false: Do not swap the triggers L1 and L2 with R1 and R2. Default: false

retrorun_swap_sticks = true | false

• true: Swap the left analog stick with the right analog stick.
• false: Do not swap the left analog stick with the right analog stick. Default: false

retrorun_tate_mode = auto | enabled | disabled | reverted

• auto: Automatically enable tate mode for vertical games.
• enabled: Enable tate mode.
• disabled: Disable tate mode.
• reverted: Rotate the screen by 180 degrees. Default: disabled

retrorun_log_level = INFO | DEBUG | WARNING | ERROR

• INFO: Display informational logs.
• DEBUG: Display debug logs.
• WARNING: Display warning logs.
• ERROR: Display error logs. Default: INFO

retrorun_device_name =

• Sets the device name. If not found in the config, the device name will be detected differently.

retrorun_mouse_speed_factor =

• Sets the speed factor for the mouse. Default: 5

Clone the repository and build RetroRun:

git clone https://github.com/navy1978/retrorun
make
strip retrorun

======

The configuration file looks like the following:

# ---- RETRORUN INTERNAL SETTINGS ----
retrorun_screenshot_folder = /storage/roms/screenshots
# ---- FLYCAST ----
flycast_threaded_rendering = enabled
flycast_internal_resolution = 640x480
flycast_anisotropic_filtering = off
flycast_enable_dsp = disabled
flycast_synchronous_rendering = disabled
flycast_enable_rtt = disabled
flycast_enable_rttb = disabled
flycast_delay_frame_swapping = disabled
# Alpha sorting should be set to per strip
flycast_alpha_sorting = per-strip (fast, least accurate)
flycast_div_matching = auto
# Texupscale should be off
flycast_texupscale = off
# Vibration support should be on
flycast_enable_purupuru = enabled
flycast_auto_skip_frame = disabled
flycast_gdrom_fast_loading = enabled
flycast_volume_modifier_enable = disabled
flycast_framerate = fullspeed
flycast_anisotropic_filtering = disabled
# ---- FLYCAST2021 ----
flycast2021_threaded_rendering = enabled
flycast2021_internal_resolution = 640x480
flycast2021_anisotropic_filtering = off
flycast2021_enable_dsp = disabled
flycast2021_synchronous_rendering = disabled
flycast2021_enable_rtt = disabled
flycast2021_enable_rttb = disabled
flycast2021_delay_frame_swapping = disabled
# Alpha sorting should be set to per strip
flycast2021_alpha_sorting = per-strip (fast, least accurate)
flycast2021_div_matching = auto
# Texupscale should be off
flycast2021_texupscale = off
# Vibration support should be on
flycast2021_enable_purupuru = enabled
flycast2021_gdrom_fast_loading = enabled
flycast2021_volume_modifier_enable = disabled
flycast2021_framerate = fullspeed
flycast2021_anisotropic_filtering = disabled
# ---- PARALLEL N64 ----
parallel-n64-framerate = fullspeed
parallel-n64-filtering = nearest
parallel-n64-audio-buffer-size = 1024
parallel-n64-gfxplugin-accuracy = medium
parallel-n64-screensize = 640x480
parallel-n64-gfxplugin = rice
# ---- JAGUAR ----
virtualjaguar_doom_res_hack = enabled
virtualjaguar_pal = disabled
virtualjaguar_usefastblitter = enabled
virtualjaguar_bios = enabled
# ---- PPSSPP ----
ppsspp_cpu_core = JIT
#ppsspp_detect_vsync_swap_interval = disabled
ppsspp_fast_memory = enabled
ppsspp_frameskip = 0
ppsspp_frameskiptype = Number of frames
ppsspp_ignore_bad_memory_access = enabled
ppsspp_internal_resolution = 480x272
ppsspp_rendering_mode=buffered
# ---- DUCKSTATION ----
duckstation_CPU.Overclock = 100
duckstation_Controller1.Type=AnalogController
# ---- SWANSTATION ----
swanstation_CPU_Overclock = 100
swanstation_GPU_Renderer = Software

# ---- RETRORUN RUNTIME SETTINGS ----