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Core System Settings

Below you can find a full reference to all available core system setting.

Arcade (FBNeo)

Setting Key Info
Vertical mode fbneo-vertical-mode Rotate display for vertical screens
Force 60Hz fbneo-force-60hz Ignore game's original refresh rate and try to run it at 60hz instead. It will cause incorrect game speed and frame pacing. It will try to use your monitor's correct refresh rate instead of 60hz if this refresh rate is between 59hz and 61hz.
Allow patched romsets fbneo-allow-patched-romsets Allow romsets from your system/fbneo/patched/ folder to override your romsets, crcs will be ignored but sizes and names must still match, you need to close content for this setting to take effect
Analog Speed fbneo-analog-speed Mitigate analog controls speed, some games might require low values to be playable
Crosshair emulation fbneo-lightgun-crosshair-emulation Change emulated crosshair behavior
CPU clock fbneo-cpu-speed-adjust Change emulated cpu frequency for various systems, by increasing you can fix native slowdowns in some games, by decreasing you can help performance on low-end devices
Hiscores fbneo-hiscores Enable high scores support, you also need the file hiscore.dat in your system/fbneo/ folder
Samplerate fbneo-samplerate Configure samplerate, it could impact performances, closing & starting game again is required
Sample Interpolation fbneo-sample-interpolation Configure sample interpolation, it could impact performances
FM Interpolation fbneo-fm-interpolation Configure FM interpolation, it could impact performances
LowPass Filter fbneo-lowpass-filter Enable LowPass Filter
Neo-Geo mode fbneo-neogeo-mode Load appropriate bios depending on your choice, under the condition such a bios is compatible with the running game
Memory card mode fbneo-memcard-mode Change the behavior for the memory card

Arcade (MAME)

Setting Key Info
Thread Mode mame_thread_mode n/a
Throttle mame_throttle n/a
Boot to BIOS mame_boot_to_bios n/a
Boot to OSD mame_boot_to_osd n/a
Read Configuration mame_read_config n/a
Write Configuration mame_write_config n/a
Save State Naming mame_saves n/a
Auto Save/Load States mame_auto_save n/a
Softlists mame_softlists_enable n/a
Softlist Automatic Media Type mame_softlists_auto_media n/a
Media Type mame_media_type n/a
Screen Rotation Mode mame_rotation_mode n/a
Joystick Deadzone mame_joystick_deadzone n/a
Joystick Saturation mame_joystick_saturation n/a
Joystick Threshold mame_joystick_threshold n/a
Joystick 4-way Simulation mame_mame_4way_enable n/a
Profile Buttons Per Game mame_buttons_profiles n/a
Mouse mame_mouse_enable n/a
Lightgun Mode mame_lightgun_mode n/a
Lightgun Offscreen Position mame_lightgun_offscreen_mode n/a
CPU Overclock mame_cpu_overclock n/a

Arcade (MAME 2K3+)

Setting Key Info
CPU Clock Scale mame2003-plus_cpu_clock_scale Used to under or over clock the emulated CPU by a specified percentage.
Skip Disclaimer mame2003-plus_skip_disclaimer Bypasses a copyright warning from being displayed when loading content.
Skip Warnings mame2003-plus_skip_warnings Bypasses a warning message from being displayed when loading content containing known issues.
Display MAME Menu mame2003-plus_display_setup Toggles the visibility of the internal MAME menu.
Legacy Remapping mame2003-plus_mame_remapping Restart core required. Enables MAME menu input remapping.
Autosave Hiscore mame2003-plus_autosave_hiscore Recommended to use default which will save the hiscore when closing content. Recursively will save repeatedly the entire time during gameplay. Disabled will bypass the use of the hiscore.dat file entirely.
Locate System Files Within a Subfolder mame2003-plus_core_sys_subfolder n/a
Locate Save Files Within a Subfolder mame2003-plus_core_save_subfolder n/a
X-Y Device mame2003-plus_xy_device Selects a specific x-y coordinates input device to read.
Input Interface mame2003-plus_input_interface Configures which input types are being read.
Allow Input Button to Act as a Toggle Switch mame2003-plus_input_toggle Disable to use actual hardware such as a fixed position high/low shifter.
Center Joystick Axis for Digital Controls mame2003-plus_digital_joy_centering Emulates the center position of an analog joystick when using digital controls. Automatically returns the center position when no direction is being applied.
Use Samples mame2003-plus_use_samples Restart core required. Allow audio sample files to be loaded when provided in the samples directory.
Sample Rate mame2003-plus_sample_rate Number of audio samples taken per second. Higher rates provide better quality audio.
Brightness mame2003-plus_brightness Modifies the brightness level being used.
Gamma Correction mame2003-plus_gamma Modifies the gamma level being used.
TATE Mode mame2003-plus_tate_mode When enabled, the display will be rotated to the orientation used by actual hardware.

Arcade SEGA Naomi/Atomis

Setting Key Info
Region reicast_region n/a
Language reicast_language Changes the language used by the BIOS and by any games that contain multiple languages.
HLE BIOS (Restart Required) reicast_hle_bios Force use of high-level emulation BIOS.
Boot to BIOS (Restart Required) reicast_boot_to_bios Boot directly into the Dreamcast BIOS menu.
Enable DSP reicast_enable_dsp Enable emulation of the Dreamcast's audio DSP (digital signal processor). Improves the accuracy of generated sound, but increases performance requirements.
Force Windows CE Mode reicast_force_wince Enable full MMU (Memory Management Unit) emulation and other settings for Windows CE games.
Allow NAOMI Service Buttons reicast_allow_service_buttons Enables SERVICE button for NAOMI, to enter cabinet settings.
Set NAOMI Games to Free Play reicast_force_freeplay Modify to coin settings of the game to free play.
Broadband Adapter Emulation reicast_emulate_bba Emulate the ethernet broadband adapter instead of the modem. (Restart Required)
Enable UPnP reicast_upnp Use UPnP to automatically configure your Internet router for online games.
Cable Type reicast_cable_type The output signal type. 'TV (Composite)' is the most widely supported.
Broadcast Standard reicast_broadcast n/a
Screen Orientation reicast_screen_rotation n/a
Alpha Sorting reicast_alpha_sorting n/a
Full framebuffer emulation reicast_emulate_framebuffer Enable full framebuffer emulation in VRAM. This is useful for games that directly read or write the framebuffer in VRAM. When enabled, Internal Resolution is forced to 640x480 and performance may be severely impacted.
Enable RTT (Render To Texture) Buffer reicast_enable_rttb Copy rendered textures back from the GPU to VRAM. This option is normally enabled for games that require it. When enabled, texture rendering upscaling is disabled and performance may be impacted.
Mipmapping reicast_mipmapping n/a
Fog Effects reicast_fog n/a
Volume Modifier reicast_volume_modifier_enable A Dreamcast GPU feature that is typically used by games to draw object shadows. This should normally be enabled - the performance impact is usually minimal to negligible.
Anisotropic Filtering reicast_anisotropic_filtering Enhance the quality of textures on surfaces that are at oblique viewing angles with respect to the camera. Higher values are more demanding on the GPU. Changes to this setting only apply after restarting.
Texture Filtering reicast_texture_filtering The texture filtering mode to use. This can be used to force a certain texture filtering mode on all textures to get a crisper (or smoother) appearance than Default. Values other than Default may cause various rendering issues. Changes to this setti
Delay Frame Swapping reicast_delay_frame_swapping Useful to avoid flashing screens or glitchy videos. Not recommended on slow platforms.
Detect Frame Rate Changes reicast_detect_vsync_swap_interval Notify frontend when internal frame rate changes (e.g. from 60 fps to 30 fps). Improves frame pacing in games that run at a locked 30 fps or 20 fps, but should be disabled for games with unlocked (unstable) frame rates (e.g. Ecco the Dolphin, Unreal
Native Depth Interpolation reicast_native_depth_interpolation Helps with texture corruption and depth issues on AMD GPUs. Can also help Intel GPUs in some cases.
Threaded Rendering reicast_threaded_rendering Runs the GPU and CPU on different threads. Highly recommended.
GD-ROM Fast Loading (inaccurate) reicast_gdrom_fast_loading Speeds up GD-ROM loading.
Dreamcast 32MB RAM Mod reicast_dc_32mb_mod Enables 32MB RAM Mod for Dreamcast. May affect compatibility
SH4 CPU under/overclock reicast_sh4clock Change the SH4 main CPU clock from the default 200 MHz. Underclocking may help slow platforms. Overclocking may increase the frame rate for some games. Use with caution.
Analog Stick Deadzone reicast_analog_stick_deadzone n/a
Trigger Deadzone reicast_trigger_deadzone n/a
Digital Triggers reicast_digital_triggers n/a
Purupuru Pack/Vibration Pack reicast_enable_purupuru Enables controller force feedback.
Broadcast Digital Outputs reicast_network_output Broadcast digital outputs and force-feedback state on TCP port 8000. Compatible with the "-output network" MAME option.
Show Light Gun Settings reicast_show_lightgun_settings Enable configuration of light gun crosshair display options. NOTE: Quick Menu may need to be toggled for this setting to take effect.
Gun Crosshair Size Scaling reicast_lightgun_crosshair_size_scaling n/a
Gun Crosshair 1 Display reicast_lightgun1_crosshair n/a
Gun Crosshair 2 Display reicast_lightgun2_crosshair n/a
Gun Crosshair 3 Display reicast_lightgun3_crosshair n/a
Gun Crosshair 4 Display reicast_lightgun4_crosshair n/a
Per-Game Visual Memory Units/Systems (VMU) reicast_per_content_vmus When disabled, all games share 4 VMU save files (A1, B1, C1, D1) located in RetroArch's system directory. The 'VMU A1' setting creates a unique VMU 'A1' file in RetroArch's save directory for each game that is launched. The 'All VMUs' setting create
Visual Memory Units/Systems (VMU) Sounds reicast_vmu_sound When enabled, VMU beeps are played.
Show Visual Memory Unit/System (VMU) Display Settings reicast_show_vmu_screen_settings Enable configuration of emulated VMU LCD screen visibility, size, position and color. NOTE: Quick Menu may need to be toggled for this setting to take effect.
VMU Screen 1 Display reicast_vmu1_screen_display n/a
VMU Screen 1 Position reicast_vmu1_screen_position n/a
VMU Screen 1 Size reicast_vmu1_screen_size_mult n/a
VMU Screen 1 Pixel On Color reicast_vmu1_pixel_on_color n/a
VMU Screen 1 Pixel Off Color reicast_vmu1_pixel_off_color n/a
VMU Screen 1 Opacity reicast_vmu1_screen_opacity n/a
VMU Screen 2 Display reicast_vmu2_screen_display n/a
VMU Screen 2 Position reicast_vmu2_screen_position n/a
VMU Screen 2 Size reicast_vmu2_screen_size_mult n/a
VMU Screen 2 Pixel On Color reicast_vmu2_pixel_on_color n/a
VMU Screen 2 Pixel Off Color reicast_vmu2_pixel_off_color n/a
VMU Screen 2 Opacity reicast_vmu2_screen_opacity n/a
VMU Screen 3 Display reicast_vmu3_screen_display n/a
VMU Screen 3 Position reicast_vmu3_screen_position n/a
VMU Screen 3 Size reicast_vmu3_screen_size_mult n/a
VMU Screen 3 Pixel On Color reicast_vmu3_pixel_on_color n/a
VMU Screen 3 Pixel Off Color reicast_vmu3_pixel_off_color n/a
VMU Screen 3 Opacity reicast_vmu3_screen_opacity n/a
VMU Screen 4 Display reicast_vmu4_screen_display n/a
VMU Screen 4 Position reicast_vmu4_screen_position n/a
VMU Screen 4 Size reicast_vmu4_screen_size_mult n/a
VMU Screen 4 Pixel On Color reicast_vmu4_pixel_on_color n/a
VMU Screen 4 Pixel Off Color reicast_vmu4_pixel_off_color n/a
VMU Screen 4 Opacity reicast_vmu4_screen_opacity n/a

Atari 2600/VCS

Setting Key Info
Console display stella_console n/a
Palette colors stella_palette n/a
TV effects stella_filter n/a
NTSC aspect % stella_ntsc_aspect n/a
PAL aspect % stella_pal_aspect n/a
Stereo sound stella_stereo n/a
Phosphor mode stella_phosphor n/a
Phosphor blend % stella_phosphor_blend n/a
Paddle joypad sensitivity stella_paddle_joypad_sensitivity n/a
Paddle analog sensitivity stella_paddle_analog_sensitivity n/a

Atari 5200

Setting Key Info
BIOS (Restart) a5200_bios Set BIOS image. 'Official' loads an original console dump provided by the user, named '5200.rom' and placed in the frontend 'System' directory. 'Internal (Altirra OS)' uses an inbuilt open-source alternative with reduced compatibility. The 'Official
Hi-Res Artifacting Mode a5200_artifacting_mode Set Hi-Res Artifacting mode used. Typically dependant on the actual emulated system. Pick the color combination that pleases you. None disables artifacting. Good for games like A.E., Backgammon, Miniature Golf and several Atari 800 to Atari 5200
High Fidelity POKEY (Restart) a5200_enable_new_pokey Enable High Fidelity Pokey for better quality sound. Disable for games that use digital sound (Berzerk)
Audio Filter a5200_low_pass_filter Enable a low pass audio filter to soften the 'harsh' sound produced by the Atari 5200's POKEY chip.
Audio Filter Level a5200_low_pass_range Specify the cut-off frequency of the low pass audio filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.
Controller Hacks a5200_input_hack Apply gamepad input hacks required for specific games. 'Dual Stick' maps Player 2's joystick to the right analog stick of Player 1's RetroPad, enabling dual stick control in 'Robotron 2084' and 'Space Dungeon'. 'Swap Ports' maps Player 1 to port 2 a
Pause acts as Reset a5200_pause_is_reset Pressing the button assigned to Pause will send a reset instead. Some games like Kangaroo and Pole Position need this in order to change game difficulty or number of players.
Digital Joystick Sensitivity a5200_digital_sensitivity Set the effective range of the emulated analog joystick when using the gamepad's digital D-Pad for movement. Lower values equate to slower speeds. 'Auto' sets value based on cartridge checksum (requires good ROM dumps).
Analog Joystick Sensitivity a5200_analog_sensitivity Set the effective range of the emulated analog joystick when using the gamepad's left analog stick for movement. Lower values equate to slower speeds. 'Auto' sets value based on cartridge checksum (requires good ROM dumps).
Analog Joystick Response a5200_analog_response Configure movement speed response when tilting the gamepad's analog stick. 'Linear': Speed is directly proportional to stick displacement. 'Quadratic': Speed increases quadratically with stick displacement, enabling greater precision when making sma
Analog Joystick Deadzone a5200_analog_deadzone Set the deadzone of the gamepad's analog sticks. May be used to eliminate controller drift.
Analog Device a5200_analog_device Set the device used for analog input.

Atari 7800

Setting Key Info
Audio Filter prosystem_low_pass_filter Enables a low pass audio filter to soften the 'harsh' sound produced by the Atari 7800's TIA chip.
Audio Filter Level prosystem_low_pass_range Specifies the cut-off frequency of the low pass audio filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.
Dual Stick Controller prosystem_gamepad_dual_stick_hack Maps Player 2's joystick to the right analog stick of Player 1's RetroPad. Enables dual stick control in supported games (e.g. Robotron: 2084, T:ME Salvo).

Atari Jaguar

Setting Key Info
Fast Blitter virtualjaguar_usefastblitter Use the faster blitter, it is older and less compatible, it will break some games.
Doom Resolution Hack virtualjaguar_doom_res_hack Hack to fix the halved resolution in Doom.
BIOS virtualjaguar_bios Use the Jaguar BIOS, required for some games.
PAL (Restart) virtualjaguar_pal Emulate a PAL Jaguar instead of NTSC.
Port 1 > Numpad Buttons to Keyboard Keys virtualjaguar_p1_numpad_to_kb Map Jaguar numpad 0-9, * and # to keyboard keys. 'Number Row Keys' will use 1234567890-= keys, 'Keypad Keys' will use 0123456789/* keypad keys.
Port 1 > RetroPad Up virtualjaguar_p1_retropad_up n/a
Port 1 > RetroPad Down virtualjaguar_p1_retropad_down n/a
Port 1 > RetroPad Left virtualjaguar_p1_retropad_left n/a
Port 1 > RetroPad Right virtualjaguar_p1_retropad_right n/a
Port 1 > RetroPad A virtualjaguar_p1_retropad_a n/a
Port 1 > RetroPad B virtualjaguar_p1_retropad_b n/a
Port 1 > RetroPad X virtualjaguar_p1_retropad_x n/a
Port 1 > RetroPad Y virtualjaguar_p1_retropad_y n/a
Port 1 > RetroPad Select virtualjaguar_p1_retropad_select n/a
Port 1 > RetroPad Start virtualjaguar_p1_retropad_start n/a
Port 1 > RetroPad L1 virtualjaguar_p1_retropad_l1 n/a
Port 1 > RetroPad R1 virtualjaguar_p1_retropad_r1 n/a
Port 1 > RetroPad L2 virtualjaguar_p1_retropad_l2 n/a
Port 1 > RetroPad R2 virtualjaguar_p1_retropad_r2 n/a
Port 1 > RetroPad L3 virtualjaguar_p1_retropad_l3 n/a
Port 1 > RetroPad R3 virtualjaguar_p1_retropad_r3 n/a
Port 1 > RetroPad Left Analog Up virtualjaguar_p1_retropad_analog_lu n/a
Port 1 > RetroPad Left Analog Down virtualjaguar_p1_retropad_analog_ld n/a
Port 1 > RetroPad Left Analog Left virtualjaguar_p1_retropad_analog_ll n/a
Port 1 > RetroPad Left Analog Right virtualjaguar_p1_retropad_analog_lr n/a
Port 1 > RetroPad Right Analog Up virtualjaguar_p1_retropad_analog_ru n/a
Port 1 > RetroPad Right Analog Down virtualjaguar_p1_retropad_analog_rd n/a
Port 1 > RetroPad Right Analog Left virtualjaguar_p1_retropad_analog_rl n/a
Port 1 > RetroPad Right Analog Right virtualjaguar_p1_retropad_analog_rr n/a
Port 2 > Numpad Buttons to Keyboard Keys virtualjaguar_p2_numpad_to_kb Map Jaguar numpad 0-9, * and # to keyboard keys. 'Number Row Keys' will use 1234567890-= keys, 'Keypad Keys' will use 0123456789/* keypad keys.
Port 2 > RetroPad Up virtualjaguar_p2_retropad_up n/a
Port 2 > RetroPad Down virtualjaguar_p2_retropad_down n/a
Port 2 > RetroPad Left virtualjaguar_p2_retropad_left n/a
Port 2 > RetroPad Right virtualjaguar_p2_retropad_right n/a
Port 2 > RetroPad A virtualjaguar_p2_retropad_a n/a
Port 2 > RetroPad B virtualjaguar_p2_retropad_b n/a
Port 2 > RetroPad X virtualjaguar_p2_retropad_x n/a
Port 2 > RetroPad Y virtualjaguar_p2_retropad_y n/a
Port 2 > RetroPad Select virtualjaguar_p2_retropad_select n/a
Port 2 > RetroPad Start virtualjaguar_p2_retropad_start n/a
Port 2 > RetroPad L1 virtualjaguar_p2_retropad_l1 n/a
Port 2 > RetroPad R1 virtualjaguar_p2_retropad_r1 n/a
Port 2 > RetroPad L2 virtualjaguar_p2_retropad_l2 n/a
Port 2 > RetroPad R2 virtualjaguar_p2_retropad_r2 n/a
Port 2 > RetroPad L3 virtualjaguar_p2_retropad_l3 n/a
Port 2 > RetroPad R3 virtualjaguar_p2_retropad_r3 n/a
Port 2 > RetroPad Left Analog Up virtualjaguar_p2_retropad_analog_lu n/a
Port 2 > RetroPad Left Analog Down virtualjaguar_p2_retropad_analog_ld n/a
Port 2 > RetroPad Left Analog Left virtualjaguar_p2_retropad_analog_ll n/a
Port 2 > RetroPad Left Analog Right virtualjaguar_p2_retropad_analog_lr n/a
Port 2 > RetroPad Right Analog Up virtualjaguar_p2_retropad_analog_ru n/a
Port 2 > RetroPad Right Analog Down virtualjaguar_p2_retropad_analog_rd n/a
Port 2 > RetroPad Right Analog Left virtualjaguar_p2_retropad_analog_rl n/a
Port 2 > RetroPad Right Analog Right virtualjaguar_p2_retropad_analog_rr n/a

Atari Lynx

Setting Key Info
Auto-rotate Screen lynx_rot_screen Virtually rotate screen orientation and button mappings automatically for known games. When set to 'Manual', screen rotation is adjusted by pressing the SELECT button, otherwise a fixed rotation can be set to either 0, 90, 180 or 270 degrees counter
Force 60Hz lynx_force_60hz Force 60Hz instead of original 75Hz refresh rate, for perfectly smooth movement on 60Hz displays

NEC TurboGrafx-16/PC Engine

Setting Key Info
Raspberry Pi 4 and higher
Color Palette pce_palette Composite tries to recreate the original console output and can show more details in some games.
High Resolution Blending Strength pce_hires_blend Blend pixels together when in High Resolution mode. Higher values will blur the picture more.
PSG Audio Chip (Restart Required) pce_psgrevision HuC6280 represents the original PC Engine, HuC6280A the SuperGrafx and CoreGrafx I.
Owl Resampler Quality pce_resamp_quality Higher values give better signal-to-noise ratio and preservation of higher frequencies but increase the computation cost and may cause higher latency and clipping if the volume is set too high.
Mouse Sensitivity pce_mouse_sensitivity Higher values will make the mouse cursor move faster.
Allow Opposing Directions pce_up_down_allowed Enabling this will allow pressing / quickly alternating / holding both left and right (or up and down) directions at the same time. This may cause movement-based glitches.
Disable Soft Reset (RUN+SELECT) pce_disable_softreset When RUN and SELECT are pressed simultaneously, disable both buttons temporarily instead of resetting.
Multitap 5-port Controller pce_multitap Enable up to 5-player multitap emulation. Disabling this is only needed in some cases (e.g. Cho Aniki).
P1 Default Joypad Type pce_default_joypad_type_p1 Choose if port 1 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P2 Default Joypad Type pce_default_joypad_type_p2 Choose if port 2 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P3 Default Joypad Type pce_default_joypad_type_p3 Choose if port 3 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P4 Default Joypad Type pce_default_joypad_type_p4 Choose if port 4 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P5 Default Joypad Type pce_default_joypad_type_p5 Choose if port 5 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
Turbo Hotkey Mode pce_Turbo_Toggling Enable turbo buttons. Hotkeys (buttons III and IV) can behave as either toggle switches or dedicated (hold to use) turbo buttons.
Alternate Turbo Hotkey pce_turbo_toggle_hotkey Assign RetroPad's L3/R3 buttons as turbo hotkeys instead of buttons III and IV. Works only in 'Toggle' mode and only as long as nothing is assigned to the L3/R3 buttons. You can avoid remapping buttons III and IV when switching to 6-button controlle
Turbo Speed pce_Turbo_Delay Choose how fast button presses are repeated.
P1 Turbo I pce_p0_turbo_I_enable n/a
P1 Turbo II pce_p0_turbo_II_enable n/a
P2 Turbo I pce_p1_turbo_I_enable n/a
P2 Turbo II pce_p1_turbo_II_enable n/a
P3 Turbo I pce_p2_turbo_I_enable n/a
P3 Turbo II pce_p2_turbo_II_enable n/a
P4 Turbo I pce_p3_turbo_I_enable n/a
P4 Turbo II pce_p3_turbo_II_enable n/a
P5 Turbo I pce_p4_turbo_I_enable n/a
P5 Turbo II pce_p4_turbo_II_enable n/a
No Sprite Limit pce_nospritelimit Remove 16-sprites-per-scanline hardware limit. WARNING: May cause graphics glitching on some games (such as Bloody Wolf).
CPU Overclock Multiplier pce_ocmultiplier Higher values can reduce slowdowns in games. WARNING: Can cause glitches and crashes.
CD Image Cache (Restart Required) pce_cdimagecache Load the complete image into memory at startup. Can potentially decrease loading times at the cost of an increased startup time.
CD Bios (Restart Required) pce_cdbios Most games can run on 'System Card 3'. 'Games Express' is needed for several unlicensed games.
Arcade Card (Restart Required) pce_arcadecard Leave this option enabled to allow enhanced modes of ACD-enhanced SCD games.
(CD) CD Speed pce_cdspeed Higher values enable faster loading times but can cause issues with a couple of games.
(CD) ADPCM precision pce_adpcmextraprec Full precision of 12-bits for the MSM5205 ADPCM predictor can reduce whining noise during ADPCM playback.
(CD) ADPCM Volume % pce_adpcmvolume CD game only. Setting this volume control too high may cause sample clipping.
(CD) CDDA Volume % pce_cddavolume CD game only. Setting this volume control too high may cause sample clipping.
(CD) CD PSG Volume % pce_cdpsgvolume CD game only. Setting this volume control too high may cause sample clipping.
Raspberry Pi 3 / Zero 2
Color Palette sgx_palette Composite tries to recreate the original console output and can show more details in some games.
Mouse Sensitivity sgx_mouse_sensitivity Higher values will make the mouse cursor move faster.
Allow Opposing Directions sgx_up_down_allowed Enabling this will allow pressing / quickly alternating / holding both left and right (or up and down) directions at the same time. This may cause movement-based glitches.
Disable Soft Reset (RUN+SELECT) sgx_disable_softreset When RUN and SELECT are pressed simultaneously, disable both buttons temporarily instead of resetting.
Multitap 5-port Controller sgx_multitap Enable up to 5-player multitap emulation. Disabling this is only needed in some cases (e.g. Cho Aniki).
P1 Default Joypad Type sgx_default_joypad_type_p1 Choose if port 1 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P2 Default Joypad Type sgx_default_joypad_type_p2 Choose if port 2 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P3 Default Joypad Type sgx_default_joypad_type_p3 Choose if port 3 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P4 Default Joypad Type sgx_default_joypad_type_p4 Choose if port 4 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P5 Default Joypad Type sgx_default_joypad_type_p5 Choose if port 5 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
Turbo Hotkey Mode sgx_turbo_toggle Enable turbo buttons. Hotkeys (buttons III and IV) can behave as either toggle switches or dedicated (hold to use) turbo buttons.
Alternate Turbo Hotkey sgx_turbo_toggle_hotkey Assign RetroPad's L3/R3 buttons as turbo hotkeys instead of buttons III and IV. Works only in 'Toggle' mode and only as long as nothing is assigned to the L3/R3 buttons. You can avoid remapping buttons III and IV when switching to 6-button controlle
Turbo Delay sgx_turbo_delay Adjust the time between turbo fire (in frames).
Input input n/a
Force SuperGrafx Emulation (Restart Required) sgx_forcesgx This is helpful to run homebrew games or to isolate games that will not run in SuperGrafx mode (like Space Harrier). Save states are not compatible with each mode. It's better to leave this option off unless needed. Known SuperGrafx games (like Dai-
No Sprite Limit sgx_nospritelimit Remove 16-sprites-per-scanline hardware limit. WARNING: May cause graphics glitching on some games.
CPU Overclock Multiplier (Restart Required) sgx_ocmultiplier Higher values can reduce slowdowns in games. WARNING: Can cause glitches and crashes.
CD Image Cache (Restart Required) sgx_cdimagecache Load the complete image into memory at startup. Can potentially decrease loading times at the cost of an increased startup time.
CD BIOS (Restart Required) sgx_cdbios Most games can run on 'System Card 3'. 'Games Express' is needed for several unlicensed games.
Detect Games Express CD (Restart Required) sgx_detect_gexpress Automatically load the Games Express BIOS regardless of CD BIOS setting when loading Games Express CD games.
(CD) CD Speed sgx_cdspeed Higher values enable faster loading times but can cause issues with a couple of games.
(CD) ADPCM Volume % sgx_adpcmvolume CD game only. Setting this volume control too high may cause sample clipping.
(CD) CDDA Volume % sgx_cddavolume CD game only. Setting this volume control too high may cause sample clipping.
(CD) PSG Volume % sgx_cdpsgvolume CD game only. Setting this volume control too high may cause sample clipping.

NEC TurboGrafx-CD/CD-ROM2 System

Setting Key Info
Raspberry Pi 4 and higher
Color Palette pce_palette Composite tries to recreate the original console output and can show more details in some games.
High Resolution Blending Strength pce_hires_blend Blend pixels together when in High Resolution mode. Higher values will blur the picture more.
PSG Audio Chip (Restart Required) pce_psgrevision HuC6280 represents the original PC Engine, HuC6280A the SuperGrafx and CoreGrafx I.
Owl Resampler Quality pce_resamp_quality Higher values give better signal-to-noise ratio and preservation of higher frequencies but increase the computation cost and may cause higher latency and clipping if the volume is set too high.
Mouse Sensitivity pce_mouse_sensitivity Higher values will make the mouse cursor move faster.
Allow Opposing Directions pce_up_down_allowed Enabling this will allow pressing / quickly alternating / holding both left and right (or up and down) directions at the same time. This may cause movement-based glitches.
Disable Soft Reset (RUN+SELECT) pce_disable_softreset When RUN and SELECT are pressed simultaneously, disable both buttons temporarily instead of resetting.
Multitap 5-port Controller pce_multitap Enable up to 5-player multitap emulation. Disabling this is only needed in some cases (e.g. Cho Aniki).
P1 Default Joypad Type pce_default_joypad_type_p1 Choose if port 1 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P2 Default Joypad Type pce_default_joypad_type_p2 Choose if port 2 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P3 Default Joypad Type pce_default_joypad_type_p3 Choose if port 3 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P4 Default Joypad Type pce_default_joypad_type_p4 Choose if port 4 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P5 Default Joypad Type pce_default_joypad_type_p5 Choose if port 5 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
Turbo Hotkey Mode pce_Turbo_Toggling Enable turbo buttons. Hotkeys (buttons III and IV) can behave as either toggle switches or dedicated (hold to use) turbo buttons.
Alternate Turbo Hotkey pce_turbo_toggle_hotkey Assign RetroPad's L3/R3 buttons as turbo hotkeys instead of buttons III and IV. Works only in 'Toggle' mode and only as long as nothing is assigned to the L3/R3 buttons. You can avoid remapping buttons III and IV when switching to 6-button controlle
Turbo Speed pce_Turbo_Delay Choose how fast button presses are repeated.
P1 Turbo I pce_p0_turbo_I_enable n/a
P1 Turbo II pce_p0_turbo_II_enable n/a
P2 Turbo I pce_p1_turbo_I_enable n/a
P2 Turbo II pce_p1_turbo_II_enable n/a
P3 Turbo I pce_p2_turbo_I_enable n/a
P3 Turbo II pce_p2_turbo_II_enable n/a
P4 Turbo I pce_p3_turbo_I_enable n/a
P4 Turbo II pce_p3_turbo_II_enable n/a
P5 Turbo I pce_p4_turbo_I_enable n/a
P5 Turbo II pce_p4_turbo_II_enable n/a
No Sprite Limit pce_nospritelimit Remove 16-sprites-per-scanline hardware limit. WARNING: May cause graphics glitching on some games (such as Bloody Wolf).
CPU Overclock Multiplier pce_ocmultiplier Higher values can reduce slowdowns in games. WARNING: Can cause glitches and crashes.
CD Image Cache (Restart Required) pce_cdimagecache Load the complete image into memory at startup. Can potentially decrease loading times at the cost of an increased startup time.
CD Bios (Restart Required) pce_cdbios Most games can run on 'System Card 3'. 'Games Express' is needed for several unlicensed games.
Arcade Card (Restart Required) pce_arcadecard Leave this option enabled to allow enhanced modes of ACD-enhanced SCD games.
(CD) CD Speed pce_cdspeed Higher values enable faster loading times but can cause issues with a couple of games.
(CD) ADPCM precision pce_adpcmextraprec Full precision of 12-bits for the MSM5205 ADPCM predictor can reduce whining noise during ADPCM playback.
(CD) ADPCM Volume % pce_adpcmvolume CD game only. Setting this volume control too high may cause sample clipping.
(CD) CDDA Volume % pce_cddavolume CD game only. Setting this volume control too high may cause sample clipping.
(CD) CD PSG Volume % pce_cdpsgvolume CD game only. Setting this volume control too high may cause sample clipping.
Raspberry Pi 3 / Zero 2
Color Palette sgx_palette Composite tries to recreate the original console output and can show more details in some games.
Mouse Sensitivity sgx_mouse_sensitivity Higher values will make the mouse cursor move faster.
Allow Opposing Directions sgx_up_down_allowed Enabling this will allow pressing / quickly alternating / holding both left and right (or up and down) directions at the same time. This may cause movement-based glitches.
Disable Soft Reset (RUN+SELECT) sgx_disable_softreset When RUN and SELECT are pressed simultaneously, disable both buttons temporarily instead of resetting.
Multitap 5-port Controller sgx_multitap Enable up to 5-player multitap emulation. Disabling this is only needed in some cases (e.g. Cho Aniki).
P1 Default Joypad Type sgx_default_joypad_type_p1 Choose if port 1 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P2 Default Joypad Type sgx_default_joypad_type_p2 Choose if port 2 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P3 Default Joypad Type sgx_default_joypad_type_p3 Choose if port 3 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P4 Default Joypad Type sgx_default_joypad_type_p4 Choose if port 4 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
P5 Default Joypad Type sgx_default_joypad_type_p5 Choose if port 5 joypad should be 2 or 6 buttons by default. This option is only applied when the core starts, if you want to switch while content is running, use the 'Mode Switch' button. NOTE: 6 buttons joypad can have weird behaviors in non compa
Turbo Hotkey Mode sgx_turbo_toggle Enable turbo buttons. Hotkeys (buttons III and IV) can behave as either toggle switches or dedicated (hold to use) turbo buttons.
Alternate Turbo Hotkey sgx_turbo_toggle_hotkey Assign RetroPad's L3/R3 buttons as turbo hotkeys instead of buttons III and IV. Works only in 'Toggle' mode and only as long as nothing is assigned to the L3/R3 buttons. You can avoid remapping buttons III and IV when switching to 6-button controlle
Turbo Delay sgx_turbo_delay Adjust the time between turbo fire (in frames).
Input input n/a
Force SuperGrafx Emulation (Restart Required) sgx_forcesgx This is helpful to run homebrew games or to isolate games that will not run in SuperGrafx mode (like Space Harrier). Save states are not compatible with each mode. It's better to leave this option off unless needed. Known SuperGrafx games (like Dai-
No Sprite Limit sgx_nospritelimit Remove 16-sprites-per-scanline hardware limit. WARNING: May cause graphics glitching on some games.
CPU Overclock Multiplier (Restart Required) sgx_ocmultiplier Higher values can reduce slowdowns in games. WARNING: Can cause glitches and crashes.
CD Image Cache (Restart Required) sgx_cdimagecache Load the complete image into memory at startup. Can potentially decrease loading times at the cost of an increased startup time.
CD BIOS (Restart Required) sgx_cdbios Most games can run on 'System Card 3'. 'Games Express' is needed for several unlicensed games.
Detect Games Express CD (Restart Required) sgx_detect_gexpress Automatically load the Games Express BIOS regardless of CD BIOS setting when loading Games Express CD games.
(CD) CD Speed sgx_cdspeed Higher values enable faster loading times but can cause issues with a couple of games.
(CD) ADPCM Volume % sgx_adpcmvolume CD game only. Setting this volume control too high may cause sample clipping.
(CD) CDDA Volume % sgx_cddavolume CD game only. Setting this volume control too high may cause sample clipping.
(CD) PSG Volume % sgx_cdpsgvolume CD game only. Setting this volume control too high may cause sample clipping.

Nintendo NES/Famicom

Setting Key Info
Region fceumm_region Force core to use NTSC, PAL or Dendy region timings.
Game Genie Add-On (Restart Required) fceumm_game_genie Enable emulation of a Game Genie add-on cartridge, allowing cheat codes to be entered when launching games. The Game Genie ROM file 'gamegenie.nes' must be present in the frontend's system directory. Does not apply to FDS or arcade content.
Color Palette fceumm_palette Choose from pre-generated palettes, a custom 64x3 palette from file or raw format (needs to use a nes-decoder shader).
NTSC Filter fceumm_ntsc_filter Blargg's NTSC filters are used to replicate RF, Composite, S-Video, and RGB cable signals.
Sound Quality fceumm_sndquality Enable higher quality sound. Increases performance requirements.
Audio RF Filter fceumm_sndlowpass Apply a low pass audio filter to simulate the 'muted' sound of the NES when connected to a television via the RF modulator.
Stereo Sound Effect fceumm_sndstereodelay Enable a fake stereo sound effect by delaying the right audio channel when upmixing the mono signal output from the NES.
Swap Audio Duty Cycles fceumm_swapduty Simulates the sound from famiclones that have the pulse wave channels duty cycle bits reversed.
Master Volume fceumm_sndvolume Change master volume level.
Audio Channel 1 (Square 1) fceumm_apu_1 Enables or disables pulse wave generator audio output 1.
Audio Channel 2 (Square 2) fceumm_apu_2 Enables or disables pulse wave generator audio output 2.
Audio Channel 3 (Triangle) fceumm_apu_3 Enables or disables triangle wave generator audio output.
Audio Channel 4 (Noise) fceumm_apu_4 Enables or disables noise generator audio output.
Audio Channel 5 (PCM) fceumm_apu_5 Enables or disables delta modulation channel audio output.
Turbo Enable fceumm_turbo_enable Enables or disables turbo buttons.
Turbo Delay (in frames) fceumm_turbo_delay Repeat rate of turbo buttons in frames.
Zapper Mode fceumm_zapper_mode Selects device to use for Zapper games.
Show Zapper Crosshair fceumm_show_crosshair Shows or hides on-screen crosshairs when using a Zapper.
Zapper Tolerance fceumm_zapper_tolerance Sets how many pixels from target area is on target.
Invert Zapper Trigger Signal fceumm_zapper_trigger Inverts trigger logic when using a Zapper. Disabling it resembles original hardware behavior.
Invert Zapper Sensor Signal fceumm_zapper_sensor Inverts sensor logic when using a Zapper (Sequential Targets Light gun mode only). Disabling it resembles original NES/FC hardware behavior.
Arkanoid Mode fceumm_arkanoid_mode Selects device to use for Arkanoid games.
Mouse Sensitivity fceumm_mouse_sensitivity Mouse sensitivity in percent.
Allow Opposing Directions fceumm_up_down_allowed Allows simultaneous UP+DOWN or LEFT+RIGHT button combinations, which can create different effects in some games.
No Sprite Limit fceumm_nospritelimit Removes the 8-per-scanline hardware limit. This reduces sprite flickering but can cause some games to glitch since some use this for effects.
Overclock fceumm_overclocking Enables or disables overclocking, which can reduce slowdowns in some games. Postrender method is more compatible with every game, Vblank is more effective for games like Contra Force.
RAM Power-On Fill (Restart Required) fceumm_ramstate RAM values on power up. Some games rely on initial RAM values for random number generation as an example.

Nintendo Super Nintendo/Super Famicom

Setting Key Info
Raspberry Pi 4 and higher
Console Region (Reload Core) snes9x_region Specify which region the system is from. 'PAL' is 50hz, 'NTSC' is 60hz. Games will run faster or slower than normal if the incorrect region is selected.
Hi-Res Blending snes9x_hires_blend Blend adjacent pixels when game switches to hi-res mode (512x448). Required for certain games that use hi-res mode to produce transparency effects (Kirby's Dream Land, Jurassic Park...).
Blargg NTSC Filter snes9x_blargg Apply a video filter to mimic various NTSC TV signals.
Audio Interpolation snes9x_audio_interpolation Apply an audio filter. 'Gaussian' reproduces the bass-heavy sound of the original hardware. 'Cubic' and 'Sinc' are less accurate, and preserve more of the high range.
Allow Opposing Directions snes9x_up_down_allowed Enabling this will allow pressing / quickly alternating / holding both left and right (or up and down) directions at the same time. This may cause movement-based glitches.
Show Light Gun Settings snes9x_show_lightgun_settings Enable configuration of Super Scope / Justifier / M.A.C.S. rifle input. NOTE: Quick Menu must be toggled for this setting to take effect.
SuperFX Overclocking snes9x_overclock_superfx SuperFX coprocessor frequency multiplier. Can improve frame rate or cause timing errors. Values under 100% can improve game performance on slow devices.
Reduce Slowdown (Hack, Unsafe) snes9x_overclock_cycles Overclock SNES CPU. May cause games to crash! Use 'Light' for shorter loading times, 'Compatible' for most games exhibiting slowdown and 'Max' only if absolutely required (Gradius 3, Super R-type...).
Reduce Flickering (Hack, Unsafe) snes9x_reduce_sprite_flicker Increases number of sprites that can be drawn simultaneously on screen.
Randomize Memory (Unsafe) snes9x_randomize_memory Randomizes system RAM upon start-up. Some games such as 'Super Off Road' use system RAM as a random number generator for item placement and AI behavior, to make gameplay more unpredictable.
Block Invalid VRAM Access snes9x_block_invalid_vram_access Some homebrew/ROM hacks require this option to be disabled for correct operation.
Echo Buffer Hack (Unsafe, only enable for old addmusic hacks) snes9x_echo_buffer_hack Some homebrew/ROM hacks require this option to be enabled for correct operation.
Light Gun Mode snes9x_lightgun_mode Use a mouse-controlled 'Light Gun' or 'Touchscreen' input.
Super Scope Reverse Trigger Buttons snes9x_superscope_reverse_buttons Swap the positions of the Super Scope 'Fire' and 'Cursor' buttons.
Super Scope Crosshair snes9x_superscope_crosshair Change the crosshair size on screen.
Super Scope Color snes9x_superscope_color Change the crosshair color on screen.
Justifier 1 Crosshair snes9x_justifier1_crosshair Change the crosshair size on screen.
Justifier 1 Color snes9x_justifier1_color Change the crosshair color on screen.
Justifier 2 Crosshair snes9x_justifier2_crosshair Change the crosshair size on screen.
Justifier 2 Color snes9x_justifier2_color Change the crosshair color on screen.
M.A.C.S. Rifle Crosshair snes9x_rifle_crosshair Change the crosshair size on screen.
M.A.C.S. Rifle Color snes9x_rifle_color Change the crosshair color on screen.
Show Layer 1 snes9x_layer_1 n/a
Show Layer 2 snes9x_layer_2 n/a
Show Layer 3 snes9x_layer_3 n/a
Show Layer 4 snes9x_layer_4 n/a
Show Sprite Layer snes9x_layer_5 n/a
Enable Graphic Clip Windows snes9x_gfx_clip n/a
Enable Transparency Effects snes9x_gfx_transp n/a
Enable Sound Channel 1 snes9x_sndchan_1 n/a
Enable Sound Channel 2 snes9x_sndchan_2 n/a
Enable Sound Channel 3 snes9x_sndchan_3 n/a
Enable Sound Channel 4 snes9x_sndchan_4 n/a
Enable Sound Channel 5 snes9x_sndchan_5 n/a
Enable Sound Channel 6 snes9x_sndchan_6 n/a
Enable Sound Channel 7 snes9x_sndchan_7 n/a
Enable Sound Channel 8 snes9x_sndchan_8 n/a
Raspberry Pi 3 / Zero 2
Console Region (Restart) snes9x_2010_region Specify which region the system is from. 'PAL' is 50hz, 'NTSC' is 60hz. Games will run faster or slower than normal if the incorrect region is selected.
Set Autofire Pulse snes9x_2010_turbodelay Fire interval: medium - 6 frames, fast - 4 frames, slow - 8 frames.
Blargg NTSC Filter snes9x_2010_blargg Apply a video filter to mimic various NTSC TV signals.
SuperFX Overclock snes9x_2010_overclock Overclock or underclock the SuperFX chip. This may improve the framerate and playability of games that use SuperFX.
Reduce Slowdown (Hack, Unsafe) snes9x_2010_overclock_cycles Overclock SNES CPU. May cause games to crash! Use 'Light' for shorter loading times, 'Compatible' for most games exhibiting slowdown and 'Max' only if absolutely required (Gradius 3, Super R-type...).
Reduce Flickering (Hack, Unsafe) snes9x_2010_reduce_sprite_flicker Increases number of sprites that can be drawn simultaneously on screen.
Block Invalid VRAM Access (Restart) snes9x_2010_block_invalid_vram_access Some homebrew/ROM hacks require this option to be disabled for correct operation.

Nintendo 64

Setting Key Info
Frame Duplication mupen64plus-FrameDuping Enable Frame duplication to improve smoothing on low-end. Different from frameskip.
Framerate mupen64plus-Framerate Fullspeed will enforce Count per Op 1 and FBEmu settings, this will break some games!
VI Refresh (Overclock) mupen64plus-virefresh Select a VI Refresh clock, Auto does not impact behaviour, other values override CountPerScanline.
Disable Expansion Pak mupen64plus-ForceDisableExtraMem Force disable Expansion Pak (might improve performance for some games while reducing emulation accuracy, will break games that require it).
Ignore emulated TLB Exceptions mupen64plus-IgnoreTLBExceptions (HACK) Ignore emulated TLB Exceptions, this might fix some broken romhacks. This option might be removed in the future.
Analog Deadzone (percent) mupen64plus-astick-deadzone Size of the non responsive area around an analog stick.
Analog Sensitivity (percent) mupen64plus-astick-sensitivity Adjust how far the stick needs to be moved to reach its max value.
Right C Button mupen64plus-r-cbutton Select Right C Button mapping.
Left C Button mupen64plus-l-cbutton Select Left C Button mapping.
Down C Button mupen64plus-d-cbutton Select Down C Button mapping.
Up C Button mupen64plus-u-cbutton Select Up C Button mapping.
Independent C-button Controls mupen64plus-alt-map Use an alternate control scheme, useful for some 3rdparty controllers.
Player 1 Pak mupen64plus-pak1 Select Player 1 Controller Pak.
Player 2 Pak mupen64plus-pak2 Select Player 2 Controller Pak.
Player 3 Pak mupen64plus-pak3 Select Player 3 Controller Pak.
Player 4 Pak mupen64plus-pak4 Select Player 4 Controller Pak.
Threaded Renderer mupen64plus-ThreadedRenderer (GLN64) Use the Threaded Renderer, improves performance but increases input lag.
Bilinear filtering mode mupen64plus-BilinearMode (GLN64) Select a Bilinear filtering method, 3point is the original system specific way.
Hybrid Filter mupen64plus-HybridFilter (GLN64) Hybrid integer scaling filter, this can be slow with low-end GPUs.
Dithering mupen64plus-DitheringPattern (GLN64) Applies dithering pattern to output image.
Dithering Quantization mupen64plus-DitheringQuantization (GLN64) Dither with color quantization.
Image Dithering Mode mupen64plus-RDRAMImageDitheringMode (GLN64) Dithering mode for image in RDRAM.
MSAA level mupen64plus-MultiSampling (GLN64) Anti-Aliasing level (0 = disabled).
FXAA mupen64plus-FXAA (GLN64) Fast Approximate Anti-Aliasing shader, moderately blur textures (0 = disabled).
LOD Emulation mupen64plus-EnableLODEmulation (GLN64) Calculate per-pixel Level Of Details to select texture mip levels and blend them with each other using LOD fraction.
Framebuffer Emulation mupen64plus-EnableFBEmulation (GLN64) Frame/depth buffer emulation. Disabling it can shorten input lag for particular games, but also break some special effects.
Copy auxiliary buffers to RDRAM mupen64plus-EnableCopyAuxToRDRAM (GLN64) Copy auxiliary buffers to RDRAM (fixes some Game artifacts like Paper Mario Intro).
Color buffer to RDRAM mupen64plus-EnableCopyColorToRDRAM (GLN64) Color buffer copy to RDRAM (Off will trade compatibility for Performance).
Depth buffer to RDRAM mupen64plus-EnableCopyDepthToRDRAM (GLN64) Depth buffer copy to RDRAM (Off will trade compatibility for Performance).
Background Mode mupen64plus-BackgroundMode (GLN64) Render backgrounds mode (HLE only). One piece (fast), Stripped (precise).
Hardware per-pixel lighting mupen64plus-EnableHWLighting (GLN64) Standard per-vertex lighting when disabled. Slightly different rendering.
Continuous texrect coords mupen64plus-CorrectTexrectCoords (GLN64) Make texrect coordinates continuous to avoid black lines between them.
Enable inaccurate texture coordinates mupen64plus-EnableInaccurateTextureCoordinates (GLN64) Enables inaccurate texture coordinate calculations. This can improve performance and texture pack compatibity at the cost of accuracy.
Enable native-res boundaries for texture coordinates mupen64plus-EnableTexCoordBounds (GLN64) Bound texture rectangle texture coordinates to the values they take in native resolutions. It prevents garbage due to fetching out of texture bounds, but can result in hard edges.
Native res. 2D texrects mupen64plus-EnableNativeResTexrects (GLN64) Render 2D texrects in native resolution to fix misalignment between parts of 2D image (example: Mario Kart driver selection portraits).
Less accurate blending mode mupen64plus-EnableLegacyBlending (GLN64) Do not use shaders to emulate N64 blending modes. Works faster on slow GPU. Can cause glitches.
GPU shader depth write mupen64plus-EnableFragmentDepthWrite (GLN64) Enable writing of fragment depth. Some mobile GPUs do not support it, thus it's optional. Leave enabled.
Cache Textures mupen64plus-EnableTextureCache (GLN64) Save texture cache to hard disk.
Max High-Res VRAM Limit mupen64plus-MaxHiResTxVramLimit (GLN64) Limit High-Res textures size in VRAM (in MB, 0 = no limit).
Max texture cache size mupen64plus-MaxTxCacheSize (GLN64) Set Max texture cache size (in elements). Reduce it if you experience black textures leading to a crash.
Texture filter mupen64plus-txFilterMode (GLN64) Select Texture Filtering mode.
Texture Enhancement mupen64plus-txEnhancementMode (GLN64) Various Texture Filters ('As-Is' will just cache).
Don't filter background textures mupen64plus-txFilterIgnoreBG (GLN64) Ignore filtering for Background Textures.
INI Behaviour mupen64plus-GLideN64IniBehaviour (GLN64) Specifies INI Settings behaviour. This should really only contain essential options. Changing this can and will break ROM's, if the correct options aren't set manually. Some options may only be set via INI (fbInfoDisabled).

Nintendo Game Boy

Setting Key Info
Game Boy Model (Restart) mgba_gb_model Runs loaded content with a specific Game Boy model. 'Autodetect' will select the most appropriate model for the current game.
Use BIOS File if Found (Restart) mgba_use_bios Use official BIOS/bootloader for emulated hardware, if present in RetroArch's system directory.
Skip BIOS Intro (Restart) mgba_skip_bios When using an official BIOS/bootloader, skip the start-up logo animation. This setting is ignored when 'Use BIOS File if Found' is disabled.
Default Game Boy Palette mgba_gb_colors Selects which palette is used for Game Boy games that are not Game Boy Color or Super Game Boy compatible, or if the model is forced to Game Boy.
Hardware Preset Game Boy Palettes (Restart) mgba_gb_colors_preset Use the palettes for Game Boy games that have presets on the Game Boy Color or Super Game Boy.
Use Super Game Boy Borders (Restart) mgba_sgb_borders Display Super Game Boy borders when running Super Game Boy enhanced games.
Color Correction mgba_color_correction Adjusts output colors to match the display of real GBA/GBC hardware.
Interframe Blending mgba_interframe_blending Simulates LCD ghosting effects. 'Simple' performs a 50:50 mix of the current and previous frames. 'Smart' attempts to detect screen flickering, and only performs a 50:50 mix on affected pixels. 'LCD Ghosting' mimics natural LCD response times by com
Audio Filter mgba_audio_low_pass_filter Enables a low pass audio filter to reduce the 'harshness' of generated audio.
Audio Filter Level mgba_audio_low_pass_range Specifies the cut-off frequency of the low pass audio filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.
Allow Opposing Directional Input mgba_allow_opposing_directions Enabling this will allow pressing / quickly alternating / holding both left and right (or up and down) directions at the same time. This may cause movement-based glitches.
Solar Sensor Level mgba_solar_sensor_level Sets ambient sunlight intensity. Can be used by games that included a solar sensor in their cartridges, e.g: the Boktai series.
Game Boy Player Rumble (Restart) mgba_force_gbp Enabling this will allow compatible games with the Game Boy Player boot logo to make the controller rumble. Due to how Nintendo decided this feature should work, it may cause glitches such as flickering or lag in some of these games.
Idle Loop Removal mgba_idle_optimization Reduce system load by optimizing so-called 'idle-loops' - sections in the code where nothing happens, but the CPU runs at full speed (like a car revving in neutral). Improves performance, and should be enabled on low-end hardware.

Nintendo Game Boy Advance

Setting Key Info
Game Boy Model (Restart) mgba_gb_model Runs loaded content with a specific Game Boy model. 'Autodetect' will select the most appropriate model for the current game.
Use BIOS File if Found (Restart) mgba_use_bios Use official BIOS/bootloader for emulated hardware, if present in RetroArch's system directory.
Skip BIOS Intro (Restart) mgba_skip_bios When using an official BIOS/bootloader, skip the start-up logo animation. This setting is ignored when 'Use BIOS File if Found' is disabled.
Default Game Boy Palette mgba_gb_colors Selects which palette is used for Game Boy games that are not Game Boy Color or Super Game Boy compatible, or if the model is forced to Game Boy.
Hardware Preset Game Boy Palettes (Restart) mgba_gb_colors_preset Use the palettes for Game Boy games that have presets on the Game Boy Color or Super Game Boy.
Use Super Game Boy Borders (Restart) mgba_sgb_borders Display Super Game Boy borders when running Super Game Boy enhanced games.
Color Correction mgba_color_correction Adjusts output colors to match the display of real GBA/GBC hardware.
Interframe Blending mgba_interframe_blending Simulates LCD ghosting effects. 'Simple' performs a 50:50 mix of the current and previous frames. 'Smart' attempts to detect screen flickering, and only performs a 50:50 mix on affected pixels. 'LCD Ghosting' mimics natural LCD response times by com
Audio Filter mgba_audio_low_pass_filter Enables a low pass audio filter to reduce the 'harshness' of generated audio.
Audio Filter Level mgba_audio_low_pass_range Specifies the cut-off frequency of the low pass audio filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.
Allow Opposing Directional Input mgba_allow_opposing_directions Enabling this will allow pressing / quickly alternating / holding both left and right (or up and down) directions at the same time. This may cause movement-based glitches.
Solar Sensor Level mgba_solar_sensor_level Sets ambient sunlight intensity. Can be used by games that included a solar sensor in their cartridges, e.g: the Boktai series.
Game Boy Player Rumble (Restart) mgba_force_gbp Enabling this will allow compatible games with the Game Boy Player boot logo to make the controller rumble. Due to how Nintendo decided this feature should work, it may cause glitches such as flickering or lag in some of these games.
Idle Loop Removal mgba_idle_optimization Reduce system load by optimizing so-called 'idle-loops' - sections in the code where nothing happens, but the CPU runs at full speed (like a car revving in neutral). Improves performance, and should be enabled on low-end hardware.

Nintendo DS

Setting Key Info
Console Mode melonds_console_mode n/a
Boot Game Directly melonds_boot_directly Choose if the core should boot the game directly or if it should boot to the DS menu instead (BIOS and firmware files required).
Use Firmware Settings melonds_use_fw_settings Use language and username from the DS firmware. When disabled or if firmware file was not found, the username will be provided by the Libretro frontend, if it's empty it will default to 'melonDS'.
Language melonds_language Selected language will be used if 'Use Firmware Settings' is disabled or if firmware file was not found.
Randomize MAC Address melonds_randomize_mac_address n/a
Enable DSi SD Card melonds_dsi_sdcard n/a
Threaded Software Renderer melonds_threaded_renderer n/a
Microphone Input melonds_mic_input Choose the type of noise that will be used as microphone input.
Audio Bitrate melonds_audio_bitrate n/a
Audio Interpolation melonds_audio_interpolation n/a
Touch Mode melonds_touch_mode Choose mode for interactions with the touch screen.
Swap Screen Mode melonds_swapscreen_mode Choose if the 'Swap screens' button should work on press or on hold.
Screen Layout melonds_screen_layout Choose how many screens should be displayed and how they should be displayed.
Screen Gap melonds_screen_gap Choose how large the gap between the 2 screens should be.
Hybrid Small Screen Mode melonds_hybrid_small_screen Choose the position of the small screen when using a 'hybrid' mode, or if it should show both screens.

SEGA SG-1000

Setting Key Info
System system n/a
.. .. n/a
System Hardware genesis_plus_gx_system_hw Runs loaded content with a specific emulated console. 'Auto' will select the most appropriate system for the current game.
System Region genesis_plus_gx_region_detect Specify which region the system is from. For consoles other than the Game Gear, 'PAL' is 50 Hz, while 'NTSC' is 60 Hz. Games may run faster or slower than normal if the incorrect region is selected.
System Boot ROM genesis_plus_gx_bios Use official BIOS/bootloader for emulated hardware, if present in RetroArch's system directory. Displays console-specific start-up sequence/animation, then runs loaded content.
CD System BRAM (Requires Restart) genesis_plus_gx_system_bram When running Sega CD/Mega-CD content, specifies whether to share a single save file between all games from a specific region (Per-BIOS) or to create a separate save file for each game (Per-Game). Note that the Sega CD/Mega-CD has limited internal st
CD Backup Cart BRAM (Requires Restart) genesis_plus_gx_cart_bram When running Sega CD/Mega-CD content, specifies whether to share a single backup ram cart for all games (Per-Cart) or to create a separate backup ram cart for each game (Per-Game).
CD Backup Cart BRAM Size (Requires Restart) genesis_plus_gx_cart_size Sets the backup ram cart size when running Sega CD/Mega-CD content. Useful when setting the backup ram cart to Per-Game to avoid multiple larger cart sizes.
CD add-on (MD mode) (Requires Restart) genesis_plus_gx_add_on Specify which add-on to use for CD audio playback with supported Mega Drive/Genesis games.
Cartridge Lock-On genesis_plus_gx_lock_on Lock-On Technology is a Mega Drive/Genesis feature that allowed an older game to connect to the pass-through port of a special cartridge for extended or altered gameplay. This option specifies which type of special 'lock-on' cartridge to emulate. A
Game Gear Extended Screen genesis_plus_gx_gg_extra Forces Game Gear titles to run in SMS mode, with an increased resolution of 256x192. May show additional content, but typically displays a border of corrupt/unwanted image data.
Blargg NTSC Filter genesis_plus_gx_blargg_ntsc_filter Apply a video filter to mimic various NTSC TV signals.
LCD Ghosting Filter genesis_plus_gx_lcd_filter Apply an image 'ghosting' filter to mimic the display characteristics of the Game Gear and Genesis Nomad LCD panels.
Interlaced Mode 2 Output genesis_plus_gx_render Interlaced Mode 2 allows the Mega Drive/Genesis to output a double height (high resolution) 320x448 image by drawing alternate scan lines each frame (this is used by Sonic the Hedgehog 2 and Combat Cars multiplayer modes). 'Double Field' mimics orig
Master System FM (YM2413) genesis_plus_gx_ym2413 Enable emulation of the FM Sound Unit used by certain Sega Mark III/Master System games for enhanced audio output.
Master System FM (YM2413) Core genesis_plus_gx_ym2413_core Select method used to emulate the FM Sound Unit of the Sega Mark III/Master System. 'MAME' option is fast, and runs full speed on most systems. 'Nuked' option is cycle accurate, very high quality, and has substantial CPU requirements.
Mega Drive/Genesis FM genesis_plus_gx_ym2612 Select method used to emulate the FM synthesizer (main sound generator) of the Mega Drive/Genesis. 'MAME' options are fast, and run full speed on most systems. 'Nuked' options are cycle accurate, very high quality, and have substantial CPU requireme
Sound Output genesis_plus_gx_sound_output Select stereo or mono sound playback.
Audio Filter genesis_plus_gx_audio_filter Enable a low pass audio filter to better simulate the characteristic sound of a Model 1 Mega Drive/Genesis.
Low-Pass Filter % genesis_plus_gx_lowpass_range Specify the cut-off frequency of the audio low pass filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.
PSG Preamp Level genesis_plus_gx_psg_preamp Set the audio preamplifier level of the emulated SN76496 4-channel Programmable Sound Generator found in the SG-1000, Sega Mark III, Master System, Game Gear and Mega Drive/Genesis.
FM Preamp Level genesis_plus_gx_fm_preamp Set the audio preamplifier level of the emulated Mega Drive/Genesis FM sound synthesizer or Sega Mark III/Master System FM Sound Unit.
CD-DA Volume genesis_plus_gx_cdda_volume Adjust the mixing volume of the emulated CD audio playback output.
PCM Volume genesis_plus_gx_pcm_volume Adjust the mixing volume of the emulated Sega CD/Mega-CD RF5C164 PCM sound generator output.
EQ Low genesis_plus_gx_audio_eq_low Adjust the low range band of the internal audio equalizer.
EQ Mid genesis_plus_gx_audio_eq_mid Adjust the middle range band of the internal audio equalizer.
EQ High genesis_plus_gx_audio_eq_high Adjust the high range band of the internal audio equalizer.
Light Gun Input genesis_plus_gx_gun_input Use a mouse-controlled 'Light Gun' or 'Touchscreen' input.
Show Light Gun Crosshair genesis_plus_gx_gun_cursor Display light gun crosshairs when using the MD Menacer, MD Justifiers and MS Light Phaser input device types.
Invert Mouse Y-Axis genesis_plus_gx_invert_mouse Inverts the Y-axis of the MD Mouse input device type.
Remove Per-Line Sprite Limit genesis_plus_gx_no_sprite_limit Removes the original sprite-per-scanline hardware limit. This reduces flickering but can cause visual glitches, as some games exploit the hardware limit to generate special effects.
Enhanced per-tile vertical scroll genesis_plus_gx_enhanced_vscroll Allows each individual cell to be scrolled vertically, instead of 16px 2-cell, by averaging out with the vscroll value of the neighbouring cell. This hack only applies to few games that use 2-cell vertical scroll mode.
Enhanced per-tile vertical scroll limit genesis_plus_gx_enhanced_vscroll_limit Only when Enhanced per-tile vertical scroll is enabled. Adjusts the limit of the vertical scroll enhancement. When the vscroll difference between neighbouring tiles is bigger than this limit, the enhancement is disabled.
CPU Speed genesis_plus_gx_overclock Overclock the emulated CPU. Can reduce slowdown, but may cause glitches.
System Lock-Ups genesis_plus_gx_force_dtack Emulate system lock-ups that occur on real hardware when performing illegal address access. This should only be disabled when playing certain demos and homebrew that rely on illegal behavior for correct operation.
68K Address Error genesis_plus_gx_addr_error The Mega Drive/Genesis main CPU (Motorola 68000) generates an Address Error exception (crash) when attempting to perform unaligned memory access. Enabling this will simulate this behavior. It should only be disabled when playing ROM hacks, since the
CD access time genesis_plus_gx_cd_latency Simulate original CD hardware latency when initiating a read or seeking to a specific location on loaded disc. This is required by a few CD games that crash if CD data is available too soon and also fixes CD audio desync issues in some games. Disabl
PSG Tone Channel 0 Volume % genesis_plus_gx_psg_channel_0_volume Reduce the volume of the PSG Tone Channel 0.
PSG Tone Channel 1 Volume % genesis_plus_gx_psg_channel_1_volume Reduce the volume of the PSG Tone Channel 1.
PSG Tone Channel 2 Volume % genesis_plus_gx_psg_channel_2_volume Reduce the volume of the PSG Tone Channel 2.
PSG Noise Channel 3 Volume % genesis_plus_gx_psg_channel_3_volume Reduce the volume of the PSG Noise Channel 3.
Mega Drive/Genesis FM Channel 0 Volume % genesis_plus_gx_md_channel_0_volume Reduce the volume of the Mega Drive/Genesis FM Channel 0. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 1 Volume % genesis_plus_gx_md_channel_1_volume Reduce the volume of the Mega Drive/Genesis FM Channel 1. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 2 Volume % genesis_plus_gx_md_channel_2_volume Reduce the volume of the Mega Drive/Genesis FM Channel 2. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 3 Volume % genesis_plus_gx_md_channel_3_volume Reduce the volume of the Mega Drive/Genesis FM Channel 3. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 4 Volume % genesis_plus_gx_md_channel_4_volume Reduce the volume of the Mega Drive/Genesis FM Channel 4. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 5 Volume % genesis_plus_gx_md_channel_5_volume Reduce the volume of the Mega Drive/Genesis FM Channel 5. Only works with MAME FM emulators.
Master System FM (YM2413) Channel 0 Volume % genesis_plus_gx_sms_fm_channel_0_volume Reduce the volume of the Master System FM Channel 0.
Master System FM (YM2413) Channel 1 Volume % genesis_plus_gx_sms_fm_channel_1_volume Reduce the volume of the Master System FM Channel 1.
Master System FM (YM2413) Channel 2 Volume % genesis_plus_gx_sms_fm_channel_2_volume Reduce the volume of the Master System FM Channel 2.
Master System FM (YM2413) Channel 3 Volume % genesis_plus_gx_sms_fm_channel_3_volume Reduce the volume of the Master System FM Channel 3.
Master System FM (YM2413) Channel 4 Volume % genesis_plus_gx_sms_fm_channel_4_volume Reduce the volume of the Master System FM Channel 4.
Master System FM (YM2413) Channel 5 Volume % genesis_plus_gx_sms_fm_channel_5_volume Reduce the volume of the Master System FM Channel 5.
Master System FM (YM2413) Channel 6 Volume % genesis_plus_gx_sms_fm_channel_6_volume Reduce the volume of the Master System FM Channel 6.
Master System FM (YM2413) Channel 7 Volume % genesis_plus_gx_sms_fm_channel_7_volume Reduce the volume of the Master System FM Channel 7.
Master System FM (YM2413) Channel 8 Volume % genesis_plus_gx_sms_fm_channel_8_volume Reduce the volume of the Master System FM Channel 8.

SEGA Game Gear

Setting Key Info
System system n/a
.. .. n/a
System Hardware genesis_plus_gx_system_hw Runs loaded content with a specific emulated console. 'Auto' will select the most appropriate system for the current game.
System Region genesis_plus_gx_region_detect Specify which region the system is from. For consoles other than the Game Gear, 'PAL' is 50 Hz, while 'NTSC' is 60 Hz. Games may run faster or slower than normal if the incorrect region is selected.
System Boot ROM genesis_plus_gx_bios Use official BIOS/bootloader for emulated hardware, if present in RetroArch's system directory. Displays console-specific start-up sequence/animation, then runs loaded content.
CD System BRAM (Requires Restart) genesis_plus_gx_system_bram When running Sega CD/Mega-CD content, specifies whether to share a single save file between all games from a specific region (Per-BIOS) or to create a separate save file for each game (Per-Game). Note that the Sega CD/Mega-CD has limited internal st
CD Backup Cart BRAM (Requires Restart) genesis_plus_gx_cart_bram When running Sega CD/Mega-CD content, specifies whether to share a single backup ram cart for all games (Per-Cart) or to create a separate backup ram cart for each game (Per-Game).
CD Backup Cart BRAM Size (Requires Restart) genesis_plus_gx_cart_size Sets the backup ram cart size when running Sega CD/Mega-CD content. Useful when setting the backup ram cart to Per-Game to avoid multiple larger cart sizes.
CD add-on (MD mode) (Requires Restart) genesis_plus_gx_add_on Specify which add-on to use for CD audio playback with supported Mega Drive/Genesis games.
Cartridge Lock-On genesis_plus_gx_lock_on Lock-On Technology is a Mega Drive/Genesis feature that allowed an older game to connect to the pass-through port of a special cartridge for extended or altered gameplay. This option specifies which type of special 'lock-on' cartridge to emulate. A
Game Gear Extended Screen genesis_plus_gx_gg_extra Forces Game Gear titles to run in SMS mode, with an increased resolution of 256x192. May show additional content, but typically displays a border of corrupt/unwanted image data.
Blargg NTSC Filter genesis_plus_gx_blargg_ntsc_filter Apply a video filter to mimic various NTSC TV signals.
LCD Ghosting Filter genesis_plus_gx_lcd_filter Apply an image 'ghosting' filter to mimic the display characteristics of the Game Gear and Genesis Nomad LCD panels.
Interlaced Mode 2 Output genesis_plus_gx_render Interlaced Mode 2 allows the Mega Drive/Genesis to output a double height (high resolution) 320x448 image by drawing alternate scan lines each frame (this is used by Sonic the Hedgehog 2 and Combat Cars multiplayer modes). 'Double Field' mimics orig
Master System FM (YM2413) genesis_plus_gx_ym2413 Enable emulation of the FM Sound Unit used by certain Sega Mark III/Master System games for enhanced audio output.
Master System FM (YM2413) Core genesis_plus_gx_ym2413_core Select method used to emulate the FM Sound Unit of the Sega Mark III/Master System. 'MAME' option is fast, and runs full speed on most systems. 'Nuked' option is cycle accurate, very high quality, and has substantial CPU requirements.
Mega Drive/Genesis FM genesis_plus_gx_ym2612 Select method used to emulate the FM synthesizer (main sound generator) of the Mega Drive/Genesis. 'MAME' options are fast, and run full speed on most systems. 'Nuked' options are cycle accurate, very high quality, and have substantial CPU requireme
Sound Output genesis_plus_gx_sound_output Select stereo or mono sound playback.
Audio Filter genesis_plus_gx_audio_filter Enable a low pass audio filter to better simulate the characteristic sound of a Model 1 Mega Drive/Genesis.
Low-Pass Filter % genesis_plus_gx_lowpass_range Specify the cut-off frequency of the audio low pass filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.
PSG Preamp Level genesis_plus_gx_psg_preamp Set the audio preamplifier level of the emulated SN76496 4-channel Programmable Sound Generator found in the SG-1000, Sega Mark III, Master System, Game Gear and Mega Drive/Genesis.
FM Preamp Level genesis_plus_gx_fm_preamp Set the audio preamplifier level of the emulated Mega Drive/Genesis FM sound synthesizer or Sega Mark III/Master System FM Sound Unit.
CD-DA Volume genesis_plus_gx_cdda_volume Adjust the mixing volume of the emulated CD audio playback output.
PCM Volume genesis_plus_gx_pcm_volume Adjust the mixing volume of the emulated Sega CD/Mega-CD RF5C164 PCM sound generator output.
EQ Low genesis_plus_gx_audio_eq_low Adjust the low range band of the internal audio equalizer.
EQ Mid genesis_plus_gx_audio_eq_mid Adjust the middle range band of the internal audio equalizer.
EQ High genesis_plus_gx_audio_eq_high Adjust the high range band of the internal audio equalizer.
Light Gun Input genesis_plus_gx_gun_input Use a mouse-controlled 'Light Gun' or 'Touchscreen' input.
Show Light Gun Crosshair genesis_plus_gx_gun_cursor Display light gun crosshairs when using the MD Menacer, MD Justifiers and MS Light Phaser input device types.
Invert Mouse Y-Axis genesis_plus_gx_invert_mouse Inverts the Y-axis of the MD Mouse input device type.
Remove Per-Line Sprite Limit genesis_plus_gx_no_sprite_limit Removes the original sprite-per-scanline hardware limit. This reduces flickering but can cause visual glitches, as some games exploit the hardware limit to generate special effects.
Enhanced per-tile vertical scroll genesis_plus_gx_enhanced_vscroll Allows each individual cell to be scrolled vertically, instead of 16px 2-cell, by averaging out with the vscroll value of the neighbouring cell. This hack only applies to few games that use 2-cell vertical scroll mode.
Enhanced per-tile vertical scroll limit genesis_plus_gx_enhanced_vscroll_limit Only when Enhanced per-tile vertical scroll is enabled. Adjusts the limit of the vertical scroll enhancement. When the vscroll difference between neighbouring tiles is bigger than this limit, the enhancement is disabled.
CPU Speed genesis_plus_gx_overclock Overclock the emulated CPU. Can reduce slowdown, but may cause glitches.
System Lock-Ups genesis_plus_gx_force_dtack Emulate system lock-ups that occur on real hardware when performing illegal address access. This should only be disabled when playing certain demos and homebrew that rely on illegal behavior for correct operation.
68K Address Error genesis_plus_gx_addr_error The Mega Drive/Genesis main CPU (Motorola 68000) generates an Address Error exception (crash) when attempting to perform unaligned memory access. Enabling this will simulate this behavior. It should only be disabled when playing ROM hacks, since the
CD access time genesis_plus_gx_cd_latency Simulate original CD hardware latency when initiating a read or seeking to a specific location on loaded disc. This is required by a few CD games that crash if CD data is available too soon and also fixes CD audio desync issues in some games. Disabl
PSG Tone Channel 0 Volume % genesis_plus_gx_psg_channel_0_volume Reduce the volume of the PSG Tone Channel 0.
PSG Tone Channel 1 Volume % genesis_plus_gx_psg_channel_1_volume Reduce the volume of the PSG Tone Channel 1.
PSG Tone Channel 2 Volume % genesis_plus_gx_psg_channel_2_volume Reduce the volume of the PSG Tone Channel 2.
PSG Noise Channel 3 Volume % genesis_plus_gx_psg_channel_3_volume Reduce the volume of the PSG Noise Channel 3.
Mega Drive/Genesis FM Channel 0 Volume % genesis_plus_gx_md_channel_0_volume Reduce the volume of the Mega Drive/Genesis FM Channel 0. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 1 Volume % genesis_plus_gx_md_channel_1_volume Reduce the volume of the Mega Drive/Genesis FM Channel 1. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 2 Volume % genesis_plus_gx_md_channel_2_volume Reduce the volume of the Mega Drive/Genesis FM Channel 2. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 3 Volume % genesis_plus_gx_md_channel_3_volume Reduce the volume of the Mega Drive/Genesis FM Channel 3. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 4 Volume % genesis_plus_gx_md_channel_4_volume Reduce the volume of the Mega Drive/Genesis FM Channel 4. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 5 Volume % genesis_plus_gx_md_channel_5_volume Reduce the volume of the Mega Drive/Genesis FM Channel 5. Only works with MAME FM emulators.
Master System FM (YM2413) Channel 0 Volume % genesis_plus_gx_sms_fm_channel_0_volume Reduce the volume of the Master System FM Channel 0.
Master System FM (YM2413) Channel 1 Volume % genesis_plus_gx_sms_fm_channel_1_volume Reduce the volume of the Master System FM Channel 1.
Master System FM (YM2413) Channel 2 Volume % genesis_plus_gx_sms_fm_channel_2_volume Reduce the volume of the Master System FM Channel 2.
Master System FM (YM2413) Channel 3 Volume % genesis_plus_gx_sms_fm_channel_3_volume Reduce the volume of the Master System FM Channel 3.
Master System FM (YM2413) Channel 4 Volume % genesis_plus_gx_sms_fm_channel_4_volume Reduce the volume of the Master System FM Channel 4.
Master System FM (YM2413) Channel 5 Volume % genesis_plus_gx_sms_fm_channel_5_volume Reduce the volume of the Master System FM Channel 5.
Master System FM (YM2413) Channel 6 Volume % genesis_plus_gx_sms_fm_channel_6_volume Reduce the volume of the Master System FM Channel 6.
Master System FM (YM2413) Channel 7 Volume % genesis_plus_gx_sms_fm_channel_7_volume Reduce the volume of the Master System FM Channel 7.
Master System FM (YM2413) Channel 8 Volume % genesis_plus_gx_sms_fm_channel_8_volume Reduce the volume of the Master System FM Channel 8.

SEGA Master System/Mark III

Setting Key Info
System system n/a
.. .. n/a
System Hardware genesis_plus_gx_system_hw Runs loaded content with a specific emulated console. 'Auto' will select the most appropriate system for the current game.
System Region genesis_plus_gx_region_detect Specify which region the system is from. For consoles other than the Game Gear, 'PAL' is 50 Hz, while 'NTSC' is 60 Hz. Games may run faster or slower than normal if the incorrect region is selected.
System Boot ROM genesis_plus_gx_bios Use official BIOS/bootloader for emulated hardware, if present in RetroArch's system directory. Displays console-specific start-up sequence/animation, then runs loaded content.
CD System BRAM (Requires Restart) genesis_plus_gx_system_bram When running Sega CD/Mega-CD content, specifies whether to share a single save file between all games from a specific region (Per-BIOS) or to create a separate save file for each game (Per-Game). Note that the Sega CD/Mega-CD has limited internal st
CD Backup Cart BRAM (Requires Restart) genesis_plus_gx_cart_bram When running Sega CD/Mega-CD content, specifies whether to share a single backup ram cart for all games (Per-Cart) or to create a separate backup ram cart for each game (Per-Game).
CD Backup Cart BRAM Size (Requires Restart) genesis_plus_gx_cart_size Sets the backup ram cart size when running Sega CD/Mega-CD content. Useful when setting the backup ram cart to Per-Game to avoid multiple larger cart sizes.
CD add-on (MD mode) (Requires Restart) genesis_plus_gx_add_on Specify which add-on to use for CD audio playback with supported Mega Drive/Genesis games.
Cartridge Lock-On genesis_plus_gx_lock_on Lock-On Technology is a Mega Drive/Genesis feature that allowed an older game to connect to the pass-through port of a special cartridge for extended or altered gameplay. This option specifies which type of special 'lock-on' cartridge to emulate. A
Game Gear Extended Screen genesis_plus_gx_gg_extra Forces Game Gear titles to run in SMS mode, with an increased resolution of 256x192. May show additional content, but typically displays a border of corrupt/unwanted image data.
Blargg NTSC Filter genesis_plus_gx_blargg_ntsc_filter Apply a video filter to mimic various NTSC TV signals.
LCD Ghosting Filter genesis_plus_gx_lcd_filter Apply an image 'ghosting' filter to mimic the display characteristics of the Game Gear and Genesis Nomad LCD panels.
Interlaced Mode 2 Output genesis_plus_gx_render Interlaced Mode 2 allows the Mega Drive/Genesis to output a double height (high resolution) 320x448 image by drawing alternate scan lines each frame (this is used by Sonic the Hedgehog 2 and Combat Cars multiplayer modes). 'Double Field' mimics orig
Master System FM (YM2413) genesis_plus_gx_ym2413 Enable emulation of the FM Sound Unit used by certain Sega Mark III/Master System games for enhanced audio output.
Master System FM (YM2413) Core genesis_plus_gx_ym2413_core Select method used to emulate the FM Sound Unit of the Sega Mark III/Master System. 'MAME' option is fast, and runs full speed on most systems. 'Nuked' option is cycle accurate, very high quality, and has substantial CPU requirements.
Mega Drive/Genesis FM genesis_plus_gx_ym2612 Select method used to emulate the FM synthesizer (main sound generator) of the Mega Drive/Genesis. 'MAME' options are fast, and run full speed on most systems. 'Nuked' options are cycle accurate, very high quality, and have substantial CPU requireme
Sound Output genesis_plus_gx_sound_output Select stereo or mono sound playback.
Audio Filter genesis_plus_gx_audio_filter Enable a low pass audio filter to better simulate the characteristic sound of a Model 1 Mega Drive/Genesis.
Low-Pass Filter % genesis_plus_gx_lowpass_range Specify the cut-off frequency of the audio low pass filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.
PSG Preamp Level genesis_plus_gx_psg_preamp Set the audio preamplifier level of the emulated SN76496 4-channel Programmable Sound Generator found in the SG-1000, Sega Mark III, Master System, Game Gear and Mega Drive/Genesis.
FM Preamp Level genesis_plus_gx_fm_preamp Set the audio preamplifier level of the emulated Mega Drive/Genesis FM sound synthesizer or Sega Mark III/Master System FM Sound Unit.
CD-DA Volume genesis_plus_gx_cdda_volume Adjust the mixing volume of the emulated CD audio playback output.
PCM Volume genesis_plus_gx_pcm_volume Adjust the mixing volume of the emulated Sega CD/Mega-CD RF5C164 PCM sound generator output.
EQ Low genesis_plus_gx_audio_eq_low Adjust the low range band of the internal audio equalizer.
EQ Mid genesis_plus_gx_audio_eq_mid Adjust the middle range band of the internal audio equalizer.
EQ High genesis_plus_gx_audio_eq_high Adjust the high range band of the internal audio equalizer.
Light Gun Input genesis_plus_gx_gun_input Use a mouse-controlled 'Light Gun' or 'Touchscreen' input.
Show Light Gun Crosshair genesis_plus_gx_gun_cursor Display light gun crosshairs when using the MD Menacer, MD Justifiers and MS Light Phaser input device types.
Invert Mouse Y-Axis genesis_plus_gx_invert_mouse Inverts the Y-axis of the MD Mouse input device type.
Remove Per-Line Sprite Limit genesis_plus_gx_no_sprite_limit Removes the original sprite-per-scanline hardware limit. This reduces flickering but can cause visual glitches, as some games exploit the hardware limit to generate special effects.
Enhanced per-tile vertical scroll genesis_plus_gx_enhanced_vscroll Allows each individual cell to be scrolled vertically, instead of 16px 2-cell, by averaging out with the vscroll value of the neighbouring cell. This hack only applies to few games that use 2-cell vertical scroll mode.
Enhanced per-tile vertical scroll limit genesis_plus_gx_enhanced_vscroll_limit Only when Enhanced per-tile vertical scroll is enabled. Adjusts the limit of the vertical scroll enhancement. When the vscroll difference between neighbouring tiles is bigger than this limit, the enhancement is disabled.
CPU Speed genesis_plus_gx_overclock Overclock the emulated CPU. Can reduce slowdown, but may cause glitches.
System Lock-Ups genesis_plus_gx_force_dtack Emulate system lock-ups that occur on real hardware when performing illegal address access. This should only be disabled when playing certain demos and homebrew that rely on illegal behavior for correct operation.
68K Address Error genesis_plus_gx_addr_error The Mega Drive/Genesis main CPU (Motorola 68000) generates an Address Error exception (crash) when attempting to perform unaligned memory access. Enabling this will simulate this behavior. It should only be disabled when playing ROM hacks, since the
CD access time genesis_plus_gx_cd_latency Simulate original CD hardware latency when initiating a read or seeking to a specific location on loaded disc. This is required by a few CD games that crash if CD data is available too soon and also fixes CD audio desync issues in some games. Disabl
PSG Tone Channel 0 Volume % genesis_plus_gx_psg_channel_0_volume Reduce the volume of the PSG Tone Channel 0.
PSG Tone Channel 1 Volume % genesis_plus_gx_psg_channel_1_volume Reduce the volume of the PSG Tone Channel 1.
PSG Tone Channel 2 Volume % genesis_plus_gx_psg_channel_2_volume Reduce the volume of the PSG Tone Channel 2.
PSG Noise Channel 3 Volume % genesis_plus_gx_psg_channel_3_volume Reduce the volume of the PSG Noise Channel 3.
Mega Drive/Genesis FM Channel 0 Volume % genesis_plus_gx_md_channel_0_volume Reduce the volume of the Mega Drive/Genesis FM Channel 0. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 1 Volume % genesis_plus_gx_md_channel_1_volume Reduce the volume of the Mega Drive/Genesis FM Channel 1. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 2 Volume % genesis_plus_gx_md_channel_2_volume Reduce the volume of the Mega Drive/Genesis FM Channel 2. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 3 Volume % genesis_plus_gx_md_channel_3_volume Reduce the volume of the Mega Drive/Genesis FM Channel 3. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 4 Volume % genesis_plus_gx_md_channel_4_volume Reduce the volume of the Mega Drive/Genesis FM Channel 4. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 5 Volume % genesis_plus_gx_md_channel_5_volume Reduce the volume of the Mega Drive/Genesis FM Channel 5. Only works with MAME FM emulators.
Master System FM (YM2413) Channel 0 Volume % genesis_plus_gx_sms_fm_channel_0_volume Reduce the volume of the Master System FM Channel 0.
Master System FM (YM2413) Channel 1 Volume % genesis_plus_gx_sms_fm_channel_1_volume Reduce the volume of the Master System FM Channel 1.
Master System FM (YM2413) Channel 2 Volume % genesis_plus_gx_sms_fm_channel_2_volume Reduce the volume of the Master System FM Channel 2.
Master System FM (YM2413) Channel 3 Volume % genesis_plus_gx_sms_fm_channel_3_volume Reduce the volume of the Master System FM Channel 3.
Master System FM (YM2413) Channel 4 Volume % genesis_plus_gx_sms_fm_channel_4_volume Reduce the volume of the Master System FM Channel 4.
Master System FM (YM2413) Channel 5 Volume % genesis_plus_gx_sms_fm_channel_5_volume Reduce the volume of the Master System FM Channel 5.
Master System FM (YM2413) Channel 6 Volume % genesis_plus_gx_sms_fm_channel_6_volume Reduce the volume of the Master System FM Channel 6.
Master System FM (YM2413) Channel 7 Volume % genesis_plus_gx_sms_fm_channel_7_volume Reduce the volume of the Master System FM Channel 7.
Master System FM (YM2413) Channel 8 Volume % genesis_plus_gx_sms_fm_channel_8_volume Reduce the volume of the Master System FM Channel 8.

SEGA Megadrive/Genesis

Setting Key Info
System system n/a
.. .. n/a
System Hardware genesis_plus_gx_system_hw Runs loaded content with a specific emulated console. 'Auto' will select the most appropriate system for the current game.
System Region genesis_plus_gx_region_detect Specify which region the system is from. For consoles other than the Game Gear, 'PAL' is 50 Hz, while 'NTSC' is 60 Hz. Games may run faster or slower than normal if the incorrect region is selected.
System Boot ROM genesis_plus_gx_bios Use official BIOS/bootloader for emulated hardware, if present in RetroArch's system directory. Displays console-specific start-up sequence/animation, then runs loaded content.
CD System BRAM (Requires Restart) genesis_plus_gx_system_bram When running Sega CD/Mega-CD content, specifies whether to share a single save file between all games from a specific region (Per-BIOS) or to create a separate save file for each game (Per-Game). Note that the Sega CD/Mega-CD has limited internal st
CD Backup Cart BRAM (Requires Restart) genesis_plus_gx_cart_bram When running Sega CD/Mega-CD content, specifies whether to share a single backup ram cart for all games (Per-Cart) or to create a separate backup ram cart for each game (Per-Game).
CD Backup Cart BRAM Size (Requires Restart) genesis_plus_gx_cart_size Sets the backup ram cart size when running Sega CD/Mega-CD content. Useful when setting the backup ram cart to Per-Game to avoid multiple larger cart sizes.
CD add-on (MD mode) (Requires Restart) genesis_plus_gx_add_on Specify which add-on to use for CD audio playback with supported Mega Drive/Genesis games.
Cartridge Lock-On genesis_plus_gx_lock_on Lock-On Technology is a Mega Drive/Genesis feature that allowed an older game to connect to the pass-through port of a special cartridge for extended or altered gameplay. This option specifies which type of special 'lock-on' cartridge to emulate. A
Game Gear Extended Screen genesis_plus_gx_gg_extra Forces Game Gear titles to run in SMS mode, with an increased resolution of 256x192. May show additional content, but typically displays a border of corrupt/unwanted image data.
Blargg NTSC Filter genesis_plus_gx_blargg_ntsc_filter Apply a video filter to mimic various NTSC TV signals.
LCD Ghosting Filter genesis_plus_gx_lcd_filter Apply an image 'ghosting' filter to mimic the display characteristics of the Game Gear and Genesis Nomad LCD panels.
Interlaced Mode 2 Output genesis_plus_gx_render Interlaced Mode 2 allows the Mega Drive/Genesis to output a double height (high resolution) 320x448 image by drawing alternate scan lines each frame (this is used by Sonic the Hedgehog 2 and Combat Cars multiplayer modes). 'Double Field' mimics orig
Master System FM (YM2413) genesis_plus_gx_ym2413 Enable emulation of the FM Sound Unit used by certain Sega Mark III/Master System games for enhanced audio output.
Master System FM (YM2413) Core genesis_plus_gx_ym2413_core Select method used to emulate the FM Sound Unit of the Sega Mark III/Master System. 'MAME' option is fast, and runs full speed on most systems. 'Nuked' option is cycle accurate, very high quality, and has substantial CPU requirements.
Mega Drive/Genesis FM genesis_plus_gx_ym2612 Select method used to emulate the FM synthesizer (main sound generator) of the Mega Drive/Genesis. 'MAME' options are fast, and run full speed on most systems. 'Nuked' options are cycle accurate, very high quality, and have substantial CPU requireme
Sound Output genesis_plus_gx_sound_output Select stereo or mono sound playback.
Audio Filter genesis_plus_gx_audio_filter Enable a low pass audio filter to better simulate the characteristic sound of a Model 1 Mega Drive/Genesis.
Low-Pass Filter % genesis_plus_gx_lowpass_range Specify the cut-off frequency of the audio low pass filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.
PSG Preamp Level genesis_plus_gx_psg_preamp Set the audio preamplifier level of the emulated SN76496 4-channel Programmable Sound Generator found in the SG-1000, Sega Mark III, Master System, Game Gear and Mega Drive/Genesis.
FM Preamp Level genesis_plus_gx_fm_preamp Set the audio preamplifier level of the emulated Mega Drive/Genesis FM sound synthesizer or Sega Mark III/Master System FM Sound Unit.
CD-DA Volume genesis_plus_gx_cdda_volume Adjust the mixing volume of the emulated CD audio playback output.
PCM Volume genesis_plus_gx_pcm_volume Adjust the mixing volume of the emulated Sega CD/Mega-CD RF5C164 PCM sound generator output.
EQ Low genesis_plus_gx_audio_eq_low Adjust the low range band of the internal audio equalizer.
EQ Mid genesis_plus_gx_audio_eq_mid Adjust the middle range band of the internal audio equalizer.
EQ High genesis_plus_gx_audio_eq_high Adjust the high range band of the internal audio equalizer.
Light Gun Input genesis_plus_gx_gun_input Use a mouse-controlled 'Light Gun' or 'Touchscreen' input.
Show Light Gun Crosshair genesis_plus_gx_gun_cursor Display light gun crosshairs when using the MD Menacer, MD Justifiers and MS Light Phaser input device types.
Invert Mouse Y-Axis genesis_plus_gx_invert_mouse Inverts the Y-axis of the MD Mouse input device type.
Remove Per-Line Sprite Limit genesis_plus_gx_no_sprite_limit Removes the original sprite-per-scanline hardware limit. This reduces flickering but can cause visual glitches, as some games exploit the hardware limit to generate special effects.
Enhanced per-tile vertical scroll genesis_plus_gx_enhanced_vscroll Allows each individual cell to be scrolled vertically, instead of 16px 2-cell, by averaging out with the vscroll value of the neighbouring cell. This hack only applies to few games that use 2-cell vertical scroll mode.
Enhanced per-tile vertical scroll limit genesis_plus_gx_enhanced_vscroll_limit Only when Enhanced per-tile vertical scroll is enabled. Adjusts the limit of the vertical scroll enhancement. When the vscroll difference between neighbouring tiles is bigger than this limit, the enhancement is disabled.
CPU Speed genesis_plus_gx_overclock Overclock the emulated CPU. Can reduce slowdown, but may cause glitches.
System Lock-Ups genesis_plus_gx_force_dtack Emulate system lock-ups that occur on real hardware when performing illegal address access. This should only be disabled when playing certain demos and homebrew that rely on illegal behavior for correct operation.
68K Address Error genesis_plus_gx_addr_error The Mega Drive/Genesis main CPU (Motorola 68000) generates an Address Error exception (crash) when attempting to perform unaligned memory access. Enabling this will simulate this behavior. It should only be disabled when playing ROM hacks, since the
CD access time genesis_plus_gx_cd_latency Simulate original CD hardware latency when initiating a read or seeking to a specific location on loaded disc. This is required by a few CD games that crash if CD data is available too soon and also fixes CD audio desync issues in some games. Disabl
PSG Tone Channel 0 Volume % genesis_plus_gx_psg_channel_0_volume Reduce the volume of the PSG Tone Channel 0.
PSG Tone Channel 1 Volume % genesis_plus_gx_psg_channel_1_volume Reduce the volume of the PSG Tone Channel 1.
PSG Tone Channel 2 Volume % genesis_plus_gx_psg_channel_2_volume Reduce the volume of the PSG Tone Channel 2.
PSG Noise Channel 3 Volume % genesis_plus_gx_psg_channel_3_volume Reduce the volume of the PSG Noise Channel 3.
Mega Drive/Genesis FM Channel 0 Volume % genesis_plus_gx_md_channel_0_volume Reduce the volume of the Mega Drive/Genesis FM Channel 0. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 1 Volume % genesis_plus_gx_md_channel_1_volume Reduce the volume of the Mega Drive/Genesis FM Channel 1. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 2 Volume % genesis_plus_gx_md_channel_2_volume Reduce the volume of the Mega Drive/Genesis FM Channel 2. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 3 Volume % genesis_plus_gx_md_channel_3_volume Reduce the volume of the Mega Drive/Genesis FM Channel 3. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 4 Volume % genesis_plus_gx_md_channel_4_volume Reduce the volume of the Mega Drive/Genesis FM Channel 4. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 5 Volume % genesis_plus_gx_md_channel_5_volume Reduce the volume of the Mega Drive/Genesis FM Channel 5. Only works with MAME FM emulators.
Master System FM (YM2413) Channel 0 Volume % genesis_plus_gx_sms_fm_channel_0_volume Reduce the volume of the Master System FM Channel 0.
Master System FM (YM2413) Channel 1 Volume % genesis_plus_gx_sms_fm_channel_1_volume Reduce the volume of the Master System FM Channel 1.
Master System FM (YM2413) Channel 2 Volume % genesis_plus_gx_sms_fm_channel_2_volume Reduce the volume of the Master System FM Channel 2.
Master System FM (YM2413) Channel 3 Volume % genesis_plus_gx_sms_fm_channel_3_volume Reduce the volume of the Master System FM Channel 3.
Master System FM (YM2413) Channel 4 Volume % genesis_plus_gx_sms_fm_channel_4_volume Reduce the volume of the Master System FM Channel 4.
Master System FM (YM2413) Channel 5 Volume % genesis_plus_gx_sms_fm_channel_5_volume Reduce the volume of the Master System FM Channel 5.
Master System FM (YM2413) Channel 6 Volume % genesis_plus_gx_sms_fm_channel_6_volume Reduce the volume of the Master System FM Channel 6.
Master System FM (YM2413) Channel 7 Volume % genesis_plus_gx_sms_fm_channel_7_volume Reduce the volume of the Master System FM Channel 7.
Master System FM (YM2413) Channel 8 Volume % genesis_plus_gx_sms_fm_channel_8_volume Reduce the volume of the Master System FM Channel 8.

SEGA Mega-CD/Sega CD

Setting Key Info
System system n/a
.. .. n/a
System Hardware genesis_plus_gx_system_hw Runs loaded content with a specific emulated console. 'Auto' will select the most appropriate system for the current game.
System Region genesis_plus_gx_region_detect Specify which region the system is from. For consoles other than the Game Gear, 'PAL' is 50 Hz, while 'NTSC' is 60 Hz. Games may run faster or slower than normal if the incorrect region is selected.
System Boot ROM genesis_plus_gx_bios Use official BIOS/bootloader for emulated hardware, if present in RetroArch's system directory. Displays console-specific start-up sequence/animation, then runs loaded content.
CD System BRAM (Requires Restart) genesis_plus_gx_system_bram When running Sega CD/Mega-CD content, specifies whether to share a single save file between all games from a specific region (Per-BIOS) or to create a separate save file for each game (Per-Game). Note that the Sega CD/Mega-CD has limited internal st
CD Backup Cart BRAM (Requires Restart) genesis_plus_gx_cart_bram When running Sega CD/Mega-CD content, specifies whether to share a single backup ram cart for all games (Per-Cart) or to create a separate backup ram cart for each game (Per-Game).
CD Backup Cart BRAM Size (Requires Restart) genesis_plus_gx_cart_size Sets the backup ram cart size when running Sega CD/Mega-CD content. Useful when setting the backup ram cart to Per-Game to avoid multiple larger cart sizes.
CD add-on (MD mode) (Requires Restart) genesis_plus_gx_add_on Specify which add-on to use for CD audio playback with supported Mega Drive/Genesis games.
Cartridge Lock-On genesis_plus_gx_lock_on Lock-On Technology is a Mega Drive/Genesis feature that allowed an older game to connect to the pass-through port of a special cartridge for extended or altered gameplay. This option specifies which type of special 'lock-on' cartridge to emulate. A
Game Gear Extended Screen genesis_plus_gx_gg_extra Forces Game Gear titles to run in SMS mode, with an increased resolution of 256x192. May show additional content, but typically displays a border of corrupt/unwanted image data.
Blargg NTSC Filter genesis_plus_gx_blargg_ntsc_filter Apply a video filter to mimic various NTSC TV signals.
LCD Ghosting Filter genesis_plus_gx_lcd_filter Apply an image 'ghosting' filter to mimic the display characteristics of the Game Gear and Genesis Nomad LCD panels.
Interlaced Mode 2 Output genesis_plus_gx_render Interlaced Mode 2 allows the Mega Drive/Genesis to output a double height (high resolution) 320x448 image by drawing alternate scan lines each frame (this is used by Sonic the Hedgehog 2 and Combat Cars multiplayer modes). 'Double Field' mimics orig
Master System FM (YM2413) genesis_plus_gx_ym2413 Enable emulation of the FM Sound Unit used by certain Sega Mark III/Master System games for enhanced audio output.
Master System FM (YM2413) Core genesis_plus_gx_ym2413_core Select method used to emulate the FM Sound Unit of the Sega Mark III/Master System. 'MAME' option is fast, and runs full speed on most systems. 'Nuked' option is cycle accurate, very high quality, and has substantial CPU requirements.
Mega Drive/Genesis FM genesis_plus_gx_ym2612 Select method used to emulate the FM synthesizer (main sound generator) of the Mega Drive/Genesis. 'MAME' options are fast, and run full speed on most systems. 'Nuked' options are cycle accurate, very high quality, and have substantial CPU requireme
Sound Output genesis_plus_gx_sound_output Select stereo or mono sound playback.
Audio Filter genesis_plus_gx_audio_filter Enable a low pass audio filter to better simulate the characteristic sound of a Model 1 Mega Drive/Genesis.
Low-Pass Filter % genesis_plus_gx_lowpass_range Specify the cut-off frequency of the audio low pass filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.
PSG Preamp Level genesis_plus_gx_psg_preamp Set the audio preamplifier level of the emulated SN76496 4-channel Programmable Sound Generator found in the SG-1000, Sega Mark III, Master System, Game Gear and Mega Drive/Genesis.
FM Preamp Level genesis_plus_gx_fm_preamp Set the audio preamplifier level of the emulated Mega Drive/Genesis FM sound synthesizer or Sega Mark III/Master System FM Sound Unit.
CD-DA Volume genesis_plus_gx_cdda_volume Adjust the mixing volume of the emulated CD audio playback output.
PCM Volume genesis_plus_gx_pcm_volume Adjust the mixing volume of the emulated Sega CD/Mega-CD RF5C164 PCM sound generator output.
EQ Low genesis_plus_gx_audio_eq_low Adjust the low range band of the internal audio equalizer.
EQ Mid genesis_plus_gx_audio_eq_mid Adjust the middle range band of the internal audio equalizer.
EQ High genesis_plus_gx_audio_eq_high Adjust the high range band of the internal audio equalizer.
Light Gun Input genesis_plus_gx_gun_input Use a mouse-controlled 'Light Gun' or 'Touchscreen' input.
Show Light Gun Crosshair genesis_plus_gx_gun_cursor Display light gun crosshairs when using the MD Menacer, MD Justifiers and MS Light Phaser input device types.
Invert Mouse Y-Axis genesis_plus_gx_invert_mouse Inverts the Y-axis of the MD Mouse input device type.
Remove Per-Line Sprite Limit genesis_plus_gx_no_sprite_limit Removes the original sprite-per-scanline hardware limit. This reduces flickering but can cause visual glitches, as some games exploit the hardware limit to generate special effects.
Enhanced per-tile vertical scroll genesis_plus_gx_enhanced_vscroll Allows each individual cell to be scrolled vertically, instead of 16px 2-cell, by averaging out with the vscroll value of the neighbouring cell. This hack only applies to few games that use 2-cell vertical scroll mode.
Enhanced per-tile vertical scroll limit genesis_plus_gx_enhanced_vscroll_limit Only when Enhanced per-tile vertical scroll is enabled. Adjusts the limit of the vertical scroll enhancement. When the vscroll difference between neighbouring tiles is bigger than this limit, the enhancement is disabled.
CPU Speed genesis_plus_gx_overclock Overclock the emulated CPU. Can reduce slowdown, but may cause glitches.
System Lock-Ups genesis_plus_gx_force_dtack Emulate system lock-ups that occur on real hardware when performing illegal address access. This should only be disabled when playing certain demos and homebrew that rely on illegal behavior for correct operation.
68K Address Error genesis_plus_gx_addr_error The Mega Drive/Genesis main CPU (Motorola 68000) generates an Address Error exception (crash) when attempting to perform unaligned memory access. Enabling this will simulate this behavior. It should only be disabled when playing ROM hacks, since the
CD access time genesis_plus_gx_cd_latency Simulate original CD hardware latency when initiating a read or seeking to a specific location on loaded disc. This is required by a few CD games that crash if CD data is available too soon and also fixes CD audio desync issues in some games. Disabl
PSG Tone Channel 0 Volume % genesis_plus_gx_psg_channel_0_volume Reduce the volume of the PSG Tone Channel 0.
PSG Tone Channel 1 Volume % genesis_plus_gx_psg_channel_1_volume Reduce the volume of the PSG Tone Channel 1.
PSG Tone Channel 2 Volume % genesis_plus_gx_psg_channel_2_volume Reduce the volume of the PSG Tone Channel 2.
PSG Noise Channel 3 Volume % genesis_plus_gx_psg_channel_3_volume Reduce the volume of the PSG Noise Channel 3.
Mega Drive/Genesis FM Channel 0 Volume % genesis_plus_gx_md_channel_0_volume Reduce the volume of the Mega Drive/Genesis FM Channel 0. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 1 Volume % genesis_plus_gx_md_channel_1_volume Reduce the volume of the Mega Drive/Genesis FM Channel 1. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 2 Volume % genesis_plus_gx_md_channel_2_volume Reduce the volume of the Mega Drive/Genesis FM Channel 2. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 3 Volume % genesis_plus_gx_md_channel_3_volume Reduce the volume of the Mega Drive/Genesis FM Channel 3. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 4 Volume % genesis_plus_gx_md_channel_4_volume Reduce the volume of the Mega Drive/Genesis FM Channel 4. Only works with MAME FM emulators.
Mega Drive/Genesis FM Channel 5 Volume % genesis_plus_gx_md_channel_5_volume Reduce the volume of the Mega Drive/Genesis FM Channel 5. Only works with MAME FM emulators.
Master System FM (YM2413) Channel 0 Volume % genesis_plus_gx_sms_fm_channel_0_volume Reduce the volume of the Master System FM Channel 0.
Master System FM (YM2413) Channel 1 Volume % genesis_plus_gx_sms_fm_channel_1_volume Reduce the volume of the Master System FM Channel 1.
Master System FM (YM2413) Channel 2 Volume % genesis_plus_gx_sms_fm_channel_2_volume Reduce the volume of the Master System FM Channel 2.
Master System FM (YM2413) Channel 3 Volume % genesis_plus_gx_sms_fm_channel_3_volume Reduce the volume of the Master System FM Channel 3.
Master System FM (YM2413) Channel 4 Volume % genesis_plus_gx_sms_fm_channel_4_volume Reduce the volume of the Master System FM Channel 4.
Master System FM (YM2413) Channel 5 Volume % genesis_plus_gx_sms_fm_channel_5_volume Reduce the volume of the Master System FM Channel 5.
Master System FM (YM2413) Channel 6 Volume % genesis_plus_gx_sms_fm_channel_6_volume Reduce the volume of the Master System FM Channel 6.
Master System FM (YM2413) Channel 7 Volume % genesis_plus_gx_sms_fm_channel_7_volume Reduce the volume of the Master System FM Channel 7.
Master System FM (YM2413) Channel 8 Volume % genesis_plus_gx_sms_fm_channel_8_volume Reduce the volume of the Master System FM Channel 8.

SEGA Megadrive 32X/Sega 32X

Setting Key Info
System Region picodrive_region Specify which region the system is from. 'PAL'/'Europe' is 50hz while 'NTSC'/'US' is 60hz. Games may run faster or slower than normal (or produce errors) if the incorrect region is selected.
Master System Type picodrive_smstype Choose which type of hardware (SMS or Game Gear) the core should emulate when running Master System content.
Master System ROM Mapping picodrive_smsmapper Choose which ROM mapper the core should apply. 'Auto' will work for a wide range of content, but in some cases automatic detection fails.
Sega CD RAM Cart picodrive_ramcart Emulate a Sega CD RAM cart, used for save game data. WARNING: When enabled, internal save data (BRAM) will be discarded.
Video Renderer picodrive_renderer Specify video rendering method. 'Accurate' is slowest, but most exact. 'Good' is faster, but fails if colors change mid-frame too often. 'Fast' renders the complete frame in one pass, and is incompatible with games that rely on mid-frame palette/spr
Audio Sample Rate (Hz) picodrive_sound_rate Higher values increase sound quality. Lower values may increase performance. Native is the Megadrive sound chip rate (~53000). Select this if you want the most accurate audio.
FM filtering picodrive_fm_filter Enable filtering for Mega Drive FM sound at non-native bitrates. Sound output will improve, at the price of being noticeably slower
Master System FM Sound Unit picodrive_smsfm Enable emulation of the SMS FM Sound Unit. This produces higher quality audio in some games, but non-Japanese titles may fail to run.
Mega Drive FM DAC noise picodrive_dacnoise Enable emulation of YM2612 DAC noise. This option generates a distortion which existed on most Model 1 Mega Drive/Genesis, but not on newer models.
Audio Filter picodrive_audio_filter Enable a low pass audio filter to better simulate the characteristic sound of a Model 1 Mega Drive/Genesis. Note that only Model 1 and its add-ons (Sega CD, 32X) employed a physical low pass filter.
Low-Pass Filter % picodrive_lowpass_range Specify the cut-off frequency of the low pass audio filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.
Input Device 1 picodrive_input1 Choose which type of controller is plugged into slot 1. Note that a multiplayer adaptor uses both slots.
Input Device 2 picodrive_input2 Choose which type of controller is plugged into slot 2. This setting is ignored when a multiplayer adaptor is plugged into slot 1.
Dynamic Recompilers picodrive_drc Enable dynamic recompilers which help to improve performance. Less accurate than interpreter CPU cores, but significantly faster.
No Sprite Limit picodrive_sprlim Removes the original sprite-per-scanline hardware limit. This reduces flickering but can cause visual glitches, as some games exploit the hardware limit to generate special effects.
68K Overclock picodrive_overclk68k Overclock the emulated 68K chip. Can reduce slowdown, but may cause glitches.

SEGA Saturn

Setting Key Info
System Region beetle_saturn_region Choose which region the system is from.
BIOS language beetle_saturn_autortc_lang Also affects language used in some games (e.g. the European release of 'Panzer Dragoon').
CD Image Cache (Restart) beetle_saturn_cdimagecache Loads the complete image in memory at startup. Can potentially decrease loading times at the cost of increased startup time. Requires a restart in order for a change to take effect.
Mid-frame Input Synchronization beetle_saturn_midsync Mid-frame synchronization can reduce input latency, but it will increase CPU requirements.
Automatically set RTC on game load beetle_saturn_autortc Automatically set the SMPC's emulated Real-Time Clock to the host system's current time and date upon game load.
Enable Horizontal Blend(blur) beetle_saturn_horizontal_blend Enable horizontal blend(blur) filter. Has a more noticeable effect with the Saturn's higher horizontal resolution modes(640/704).
6Player Adaptor on Port 1 beetle_saturn_multitap_port1 Enable multitap on Saturn port 1.
6Player Adaptor on Port 2 beetle_saturn_multitap_port2 Enable multitap on Saturn port 2.
Allow Up+Down and Left+Right beetle_saturn_opposite_directions Enabling this will allow pressing up and down or left and right directions at the same time. This may cause glitches.
Analog Stick Deadzone beetle_saturn_analog_stick_deadzone Configure the '3D Control Pad' Device Type's analog deadzone.
Trigger Deadzone beetle_saturn_trigger_deadzone Configure the '3D Control Pad' Device Type's trigger deadzone.
Mouse Sensitivity beetle_saturn_mouse_sensitivity Configure the 'Mouse' device type's sensitivity.
Gun Crosshair beetle_saturn_virtuagun_crosshair Choose the crosshair for the 'Stunner' and 'Virtua Gun' device types. Setting it to Off disables the crosshair.
Gun Input Mode beetle_saturn_virtuagun_input n/a
Cartridge beetle_saturn_cart Certain games require an external cartridge to run (ROM Cart, 1M RAM Cart, 4M RAM Cart).
Shared Internal Memory (Restart) beetle_saturn_shared_int Enables shared internal memory.
Shared Backup Memory (Restart) beetle_saturn_shared_ext Enables shared backup memory.

SEGA Dreamcast

Setting Key Info
Region reicast_region n/a
Language reicast_language Changes the language used by the BIOS and by any games that contain multiple languages.
HLE BIOS (Restart Required) reicast_hle_bios Force use of high-level emulation BIOS.
Boot to BIOS (Restart Required) reicast_boot_to_bios Boot directly into the Dreamcast BIOS menu.
Enable DSP reicast_enable_dsp Enable emulation of the Dreamcast's audio DSP (digital signal processor). Improves the accuracy of generated sound, but increases performance requirements.
Force Windows CE Mode reicast_force_wince Enable full MMU (Memory Management Unit) emulation and other settings for Windows CE games.
Allow NAOMI Service Buttons reicast_allow_service_buttons Enables SERVICE button for NAOMI, to enter cabinet settings.
Set NAOMI Games to Free Play reicast_force_freeplay Modify to coin settings of the game to free play.
Broadband Adapter Emulation reicast_emulate_bba Emulate the ethernet broadband adapter instead of the modem. (Restart Required)
Enable UPnP reicast_upnp Use UPnP to automatically configure your Internet router for online games.
Cable Type reicast_cable_type The output signal type. 'TV (Composite)' is the most widely supported.
Broadcast Standard reicast_broadcast n/a
Screen Orientation reicast_screen_rotation n/a
Alpha Sorting reicast_alpha_sorting n/a
Full framebuffer emulation reicast_emulate_framebuffer Enable full framebuffer emulation in VRAM. This is useful for games that directly read or write the framebuffer in VRAM. When enabled, Internal Resolution is forced to 640x480 and performance may be severely impacted.
Enable RTT (Render To Texture) Buffer reicast_enable_rttb Copy rendered textures back from the GPU to VRAM. This option is normally enabled for games that require it. When enabled, texture rendering upscaling is disabled and performance may be impacted.
Mipmapping reicast_mipmapping n/a
Fog Effects reicast_fog n/a
Volume Modifier reicast_volume_modifier_enable A Dreamcast GPU feature that is typically used by games to draw object shadows. This should normally be enabled - the performance impact is usually minimal to negligible.
Anisotropic Filtering reicast_anisotropic_filtering Enhance the quality of textures on surfaces that are at oblique viewing angles with respect to the camera. Higher values are more demanding on the GPU. Changes to this setting only apply after restarting.
Texture Filtering reicast_texture_filtering The texture filtering mode to use. This can be used to force a certain texture filtering mode on all textures to get a crisper (or smoother) appearance than Default. Values other than Default may cause various rendering issues. Changes to this setti
Delay Frame Swapping reicast_delay_frame_swapping Useful to avoid flashing screens or glitchy videos. Not recommended on slow platforms.
Detect Frame Rate Changes reicast_detect_vsync_swap_interval Notify frontend when internal frame rate changes (e.g. from 60 fps to 30 fps). Improves frame pacing in games that run at a locked 30 fps or 20 fps, but should be disabled for games with unlocked (unstable) frame rates (e.g. Ecco the Dolphin, Unreal
Native Depth Interpolation reicast_native_depth_interpolation Helps with texture corruption and depth issues on AMD GPUs. Can also help Intel GPUs in some cases.
Threaded Rendering reicast_threaded_rendering Runs the GPU and CPU on different threads. Highly recommended.
GD-ROM Fast Loading (inaccurate) reicast_gdrom_fast_loading Speeds up GD-ROM loading.
Dreamcast 32MB RAM Mod reicast_dc_32mb_mod Enables 32MB RAM Mod for Dreamcast. May affect compatibility
SH4 CPU under/overclock reicast_sh4clock Change the SH4 main CPU clock from the default 200 MHz. Underclocking may help slow platforms. Overclocking may increase the frame rate for some games. Use with caution.
Analog Stick Deadzone reicast_analog_stick_deadzone n/a
Trigger Deadzone reicast_trigger_deadzone n/a
Digital Triggers reicast_digital_triggers n/a
Purupuru Pack/Vibration Pack reicast_enable_purupuru Enables controller force feedback.
Broadcast Digital Outputs reicast_network_output Broadcast digital outputs and force-feedback state on TCP port 8000. Compatible with the "-output network" MAME option.
Show Light Gun Settings reicast_show_lightgun_settings Enable configuration of light gun crosshair display options. NOTE: Quick Menu may need to be toggled for this setting to take effect.
Gun Crosshair Size Scaling reicast_lightgun_crosshair_size_scaling n/a
Gun Crosshair 1 Display reicast_lightgun1_crosshair n/a
Gun Crosshair 2 Display reicast_lightgun2_crosshair n/a
Gun Crosshair 3 Display reicast_lightgun3_crosshair n/a
Gun Crosshair 4 Display reicast_lightgun4_crosshair n/a
Per-Game Visual Memory Units/Systems (VMU) reicast_per_content_vmus When disabled, all games share 4 VMU save files (A1, B1, C1, D1) located in RetroArch's system directory. The 'VMU A1' setting creates a unique VMU 'A1' file in RetroArch's save directory for each game that is launched. The 'All VMUs' setting create
Visual Memory Units/Systems (VMU) Sounds reicast_vmu_sound When enabled, VMU beeps are played.
Show Visual Memory Unit/System (VMU) Display Settings reicast_show_vmu_screen_settings Enable configuration of emulated VMU LCD screen visibility, size, position and color. NOTE: Quick Menu may need to be toggled for this setting to take effect.
VMU Screen 1 Display reicast_vmu1_screen_display n/a
VMU Screen 1 Position reicast_vmu1_screen_position n/a
VMU Screen 1 Size reicast_vmu1_screen_size_mult n/a
VMU Screen 1 Pixel On Color reicast_vmu1_pixel_on_color n/a
VMU Screen 1 Pixel Off Color reicast_vmu1_pixel_off_color n/a
VMU Screen 1 Opacity reicast_vmu1_screen_opacity n/a
VMU Screen 2 Display reicast_vmu2_screen_display n/a
VMU Screen 2 Position reicast_vmu2_screen_position n/a
VMU Screen 2 Size reicast_vmu2_screen_size_mult n/a
VMU Screen 2 Pixel On Color reicast_vmu2_pixel_on_color n/a
VMU Screen 2 Pixel Off Color reicast_vmu2_pixel_off_color n/a
VMU Screen 2 Opacity reicast_vmu2_screen_opacity n/a
VMU Screen 3 Display reicast_vmu3_screen_display n/a
VMU Screen 3 Position reicast_vmu3_screen_position n/a
VMU Screen 3 Size reicast_vmu3_screen_size_mult n/a
VMU Screen 3 Pixel On Color reicast_vmu3_pixel_on_color n/a
VMU Screen 3 Pixel Off Color reicast_vmu3_pixel_off_color n/a
VMU Screen 3 Opacity reicast_vmu3_screen_opacity n/a
VMU Screen 4 Display reicast_vmu4_screen_display n/a
VMU Screen 4 Position reicast_vmu4_screen_position n/a
VMU Screen 4 Size reicast_vmu4_screen_size_mult n/a
VMU Screen 4 Pixel On Color reicast_vmu4_pixel_on_color n/a
VMU Screen 4 Pixel Off Color reicast_vmu4_pixel_off_color n/a
VMU Screen 4 Opacity reicast_vmu4_screen_opacity n/a

SNK NEO-GEO (AES/MVS)

Setting Key Info
Vertical mode fbneo-vertical-mode Rotate display for vertical screens
Force 60Hz fbneo-force-60hz Ignore game's original refresh rate and try to run it at 60hz instead. It will cause incorrect game speed and frame pacing. It will try to use your monitor's correct refresh rate instead of 60hz if this refresh rate is between 59hz and 61hz.
Allow patched romsets fbneo-allow-patched-romsets Allow romsets from your system/fbneo/patched/ folder to override your romsets, crcs will be ignored but sizes and names must still match, you need to close content for this setting to take effect
Analog Speed fbneo-analog-speed Mitigate analog controls speed, some games might require low values to be playable
Crosshair emulation fbneo-lightgun-crosshair-emulation Change emulated crosshair behavior
CPU clock fbneo-cpu-speed-adjust Change emulated cpu frequency for various systems, by increasing you can fix native slowdowns in some games, by decreasing you can help performance on low-end devices
Diagnostic Input fbneo-diagnostic-input Configure button combination to enter cabinet service menu
Neo-Geo mode fbneo-neogeo-mode Load appropriate bios depending on your choice, under the condition such a bios is compatible with the running game
Memory card mode fbneo-memcard-mode Change the behavior for the memory card
Debug Dip 1_1 fbneo-debug-dip-1-1 Enable Debug Dip 1_1
Debug Dip 1_2 fbneo-debug-dip-1-2 Enable Debug Dip 1_2
Debug Dip 1_3 fbneo-debug-dip-1-3 Enable Debug Dip 1_3
Debug Dip 1_4 fbneo-debug-dip-1-4 Enable Debug Dip 1_4
Debug Dip 1_5 fbneo-debug-dip-1-5 Enable Debug Dip 1_5
Debug Dip 1_6 fbneo-debug-dip-1-6 Enable Debug Dip 1_6
Debug Dip 1_7 fbneo-debug-dip-1-7 Enable Debug Dip 1_7
Debug Dip 1_8 fbneo-debug-dip-1-8 Enable Debug Dip 1_8
Debug Dip 2_1 fbneo-debug-dip-2-1 Enable Debug Dip 2_1
Debug Dip 2_2 fbneo-debug-dip-2-2 Enable Debug Dip 2_2
Debug Dip 2_3 fbneo-debug-dip-2-3 Enable Debug Dip 2_3
Debug Dip 2_4 fbneo-debug-dip-2-4 Enable Debug Dip 2_4
Debug Dip 2_5 fbneo-debug-dip-2-5 Enable Debug Dip 2_5
Debug Dip 2_6 fbneo-debug-dip-2-6 Enable Debug Dip 2_6
Debug Dip 2_7 fbneo-debug-dip-2-7 Enable Debug Dip 2_7
Debug Dip 2_8 fbneo-debug-dip-2-8 Enable Debug Dip 2_8
Samplerate fbneo-samplerate Configure samplerate, it could impact performances, closing & starting game again is required
Sample Interpolation fbneo-sample-interpolation Configure sample interpolation, it could impact performances
FM Interpolation fbneo-fm-interpolation Configure FM interpolation, it could impact performances
LowPass Filter fbneo-lowpass-filter Enable LowPass Filter
[Dipswitch] Autofire fbneo-dipswitch-bstars-Autofire Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] Setting mode fbneo-dipswitch-bstars-Setting_mode Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] Coin chutes fbneo-dipswitch-bstars-Coin_chutes Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] Coin chutes fbneo-dipswitch-bstars-Coin_chutes_2 Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] Commmunicaton fbneo-dipswitch-bstars-Commmunicaton Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] Free play fbneo-dipswitch-bstars-Free_play Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] Stop mode fbneo-dipswitch-bstars-Stop_mode Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] BIOS fbneo-dipswitch-bstars-BIOS Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] Memory card fbneo-dipswitch-bstars-Memory_card Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] New card type fbneo-dipswitch-bstars-New_card_type Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.

SNK NEO-GEO CD

Setting Key Info
Vertical mode fbneo-vertical-mode Rotate display for vertical screens
Force 60Hz fbneo-force-60hz Ignore game's original refresh rate and try to run it at 60hz instead. It will cause incorrect game speed and frame pacing. It will try to use your monitor's correct refresh rate instead of 60hz if this refresh rate is between 59hz and 61hz.
Allow patched romsets fbneo-allow-patched-romsets Allow romsets from your system/fbneo/patched/ folder to override your romsets, crcs will be ignored but sizes and names must still match, you need to close content for this setting to take effect
Analog Speed fbneo-analog-speed Mitigate analog controls speed, some games might require low values to be playable
Crosshair emulation fbneo-lightgun-crosshair-emulation Change emulated crosshair behavior
CPU clock fbneo-cpu-speed-adjust Change emulated cpu frequency for various systems, by increasing you can fix native slowdowns in some games, by decreasing you can help performance on low-end devices
Diagnostic Input fbneo-diagnostic-input Configure button combination to enter cabinet service menu
Sample Interpolation fbneo-sample-interpolation Configure sample interpolation, it could impact performances
FM Interpolation fbneo-fm-interpolation Configure FM interpolation, it could impact performances
LowPass Filter fbneo-lowpass-filter Enable LowPass Filter
[Dipswitch] Region fbneo-dipswitch-neocdz-Region Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] BIOS fbneo-dipswitch-neocdz-BIOS Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.
[Dipswitch] CD Loading Speed fbneo-dipswitch-neocdz-CD_Loading_Speed Dipswitch setting, setting is specific to the running romset. Some dipswitches require a restart to work properly.

SNK NEO-GEO Pocket

Setting Key Info
Language (*) ngp_language n/a

SONY PlayStation

Setting Key Info
Raspberry Pi 4 and higher
Console Region swanstation_Console_Region Determines which region/hardware to emulate. Auto-Detect will use the region of the disc inserted.
NTSC-J BIOS (Restart) swanstation_BIOS_PathNTSCJ Select which standard BIOS to use for NTSC-J.
NTSC-U BIOS (Restart) swanstation_BIOS_PathNTSCU Select which standard BIOS to use for NTSC-U.
PAL BIOS (Restart) swanstation_BIOS_PathPAL Select which standard BIOS to use for PAL.
Fast Boot swanstation_BIOS_PatchFastBoot Skips the BIOS shell/intro, booting directly into the game. Usually safe to enable, but some games break.
CD-ROM Region Check swanstation_CDROM_RegionCheck Prevents discs from incorrect regions being read by the emulator. Usually safe to disable.
CD-ROM Read Thread swanstation_CDROM_ReadThread Reads CD-ROM sectors ahead asynchronously, reducing the risk of frame time spikes.
Apply Image Patches (Restart) swanstation_CDROM_LoadImagePatches Automatically applies patches to disc images when they are present in the same directory. Currently only PPF patches are supported with this option. Requires the core to be restarted to apply.
Preload CD-ROM Image To RAM swanstation_CDROM_LoadImageToRAM Loads the disc image to RAM before starting emulation. May reduce hitching if you are running off a network share, at a cost of a greater startup time. As libretro provides no way to draw overlays, the emulator will appear to lock up while the image
Pre-cache CHD Images To RAM swanstation_CDROM_PreCacheCHD Pre-caches CHD CD-ROM images to RAM without decompressing them. Unlike the preload option, this option supports M3U files. It is also faster and requires less RAM compared to preloading as it doesn't decompress the CHD.
Mute CD Audio swanstation_CDROM_MuteCDAudio Forcibly mutes both CD-DA and XA audio from the CD-ROM. Can be used to disable background music in some games.
CD-ROM Read Speedup swanstation_CDROM_ReadSpeedup Speeds up CD-ROM reads by the specified factor. Only applies to double-speed reads, and is ignored when audio is playing. May improve loading speeds in some games, at the cost of breaking others.
CD-ROM Seek Speedup swanstation_CDROM_SeekSpeedup Speeds up CD-ROM seeks by the specified factor. May improve loading speeds in some game, at the cost of breaking others.
CPU Execution Mode swanstation_CPU_ExecutionMode Which mode to use for CPU emulation. Recompiler provides the best performance.
GPU Renderer swanstation_GPU_Renderer Which renderer to use to emulate the GPU.
Threaded Rendering (Software) swanstation_GPU_UseThread Uses a second thread for drawing graphics. Currently only available for the software renderer.
Use Software Renderer For Readbacks (Restart) swanstation_GPU_UseSoftwareRendererForReadbacks Runs the software renderer in parallel for VRAM readbacks. Some games may require this to be enabled to produce proper framebuffer effects (e.g. motion blur, battle swirls ect.), or otherwise fix corrupted textures when using the hardware renderers.
True Color Rendering swanstation_GPU_TrueColor Disables dithering and uses the full 8 bits per channel of color information. May break rendering in some games.
Disable Interlacing swanstation_GPU_DisableInterlacing Disables interlaced rendering and display in the GPU. Some games can render in 480p this way, but others will break.
Force NTSC Timings swanstation_GPU_ForceNTSCTimings Forces PAL games to run at NTSC timings, i.e. 60hz. Some PAL games will run at their "normal" speeds, while others will break.
Force 4:3 For 24-Bit Display swanstation_Display_Force4_3For24Bit Switches back to 4:3 display aspect ratio when displaying 24-bit content, usually FMVs.
Chroma Smoothing For 24-Bit Display swanstation_GPU_ChromaSmoothing24Bit Smooths out blockyness between colour transitions in 24-bit content, usually FMVs. Only applies to the hardware renderers.
PGXP Geometry Correction swanstation_GPU_PGXPEnable Reduces "wobbly" polygons by attempting to preserve the fractional component through memory transfers. Only works with the hardware renderers, and may not be compatible with all games.
PGXP Culling Correction swanstation_GPU_PGXPCulling Increases the precision of polygon culling, reducing the number of holes in geometry. Requires geometry correction enabled.
PGXP Perspective Correct Textures swanstation_GPU_PGXPTextureCorrection Uses perspective-correct interpolation for texture coordinates, straightening out warped textures. Requires geometry correction enabled.
PGXP Perspective Correct Colors swanstation_GPU_PGXPColorCorrection Uses perspective-correct interpolation for vertex colors, which can improve visuals in some games, but cause rendering errors in others. Requires geometry correction enabled.
PGXP Depth Buffer swanstation_GPU_PGXPDepthBuffer Attempts to reduce polygon Z-fighting by testing pixels against the depth values from PGXP. Low compatibility, but can work well in some games. Requires geometry correction enabled.
PGXP Vertex Cache swanstation_GPU_PGXPVertexCache Uses screen coordinates as a fallback when tracking vertices through memory fails. May improve PGXP compatibility.
PGXP CPU Mode swanstation_GPU_PGXPCPU Tries to track vertex manipulation through the CPU. Some games require this option for PGXP to be effective. Very slow, and incompatible with the recompiler.
PGXP Preserve Projection Precision swanstation_GPU_PGXPPreserveProjFP Enables additional precision for PGXP. May improve visuals in some games but break others.
PGXP Geometry Tolerance swanstation_GPU_PGXPTolerance Ignores precise positions if the difference exceeds this threshold.
PGXP Depth Clear Threshold swanstation_GPU_PGXPDepthClearThreshold Sets the threshold for the PGXP Depth Buffer.
Display OSD Messages swanstation_Display_ShowOSDMessages Shows on-screen messages generated by the core.
Memory Card 1 Type (Restart) swanstation_MemoryCards_Card1Type Sets the type of memory card for Slot 1. Restart the core when switching formats. 'Shared Between All Games' and both 'Separate Card Per Game' options may be used for legacy purposes, and are unsupported. 'Libretro' (.srm) and 'Separate Card Per Gam
Memory Card 2 Type swanstation_MemoryCards_Card2Type Sets the type of memory card for Slot 2.
Use Single Card For Playlist swanstation_MemoryCards_UsePlaylistTitle When using a playlist (m3u) and per-game (title) memory cards, a single memory card will be used for all discs. If unchecked, a separate card will be used for each disc.
Multitap Mode swanstation_ControllerPorts_MultitapMode Sets the mode for the multitap.
DualShock Analog Mode Combo swanstation_Controller_AnalogCombo Sets the combo used to toggle analog mode.
DualShock Enable Rumble swanstation_Controller_EnableRumble Enable haptic feedback when using a rumble-equipped gamepad with input device set to 'DualShock'.
GunCon Show Crosshair swanstation_Controller_ShowCrosshair Show a crosshair when the input device is set to 'Namco GunCon'.
Controller 1 Force Analog Mode swanstation_Controller1_ForceAnalog Forces analog mode to be always on. May cause issues with some games. Only use this option for games that support analog mode but do not automatically enable it themselves. When disabled, analog mode can be toggled by pressing and holding the DualSh
Controller 1 Use Analog Sticks for D-Pad in Digital Mode swanstation_Controller1_AnalogDPadInDigitalMode Allows you to use the analog sticks to control the d-pad in digital mode, as well as the buttons.
Controller 1 Analog Axis Scale swanstation_Controller1_AxisScale Sets the analog stick axis scaling factor.
Controller 1 Vibration Bias swanstation_Controller1_VibrationBias Applies an offset to vibration intensities, higher values will make smaller vibrations more noticable.
Controller 1 Lightgun X Scale swanstation_Controller1_XScale Scales X coordinates relative to the center of the screen.
Controller 1 Lightgun Y Scale swanstation_Controller1_YScale Scales Y coordinates relative to the center of the screen.
Controller 1 NeGcon Steering Axis Deadzone swanstation_Controller1_SteeringDeadzone Sets deadzone size for steering axis.
Controller 1 NeGcon Twist Response swanstation_Controller1_TwistResponse Sets the twist response type for the left analog stick. 'Quadratic' allows for greater precision than 'Linear' when making small movements, and is more suited for modern controllers, While 'Cubic' further increases small movement precision, but 'exa
Controller 2 Force Analog Mode swanstation_Controller2_ForceAnalog Forces analog mode to be always on. May cause issues with some games. Only use this option for games that support analog mode but do not automatically enable it themselves. When disabled, analog mode can be toggled by pressing and holding the DualSh
Controller 2 Use Analog Sticks for D-Pad in Digital Mode swanstation_Controller2_AnalogDPadInDigitalMode Allows you to use the analog sticks to control the d-pad in digital mode, as well as the buttons.
Controller 2 Analog Axis Scale swanstation_Controller2_AxisScale Sets the analog stick axis scaling factor.
Controller 2 Vibration Bias swanstation_Controller2_VibrationBias Applies an offset to vibration intensities, higher values will make smaller vibrations more noticable.
Controller 2 Lightgun X Scale swanstation_Controller2_XScale Scales X coordinates relative to the center of the screen.
Controller 2 Lightgun Y Scale swanstation_Controller2_YScale Scales Y coordinates relative to the center of the screen.
Controller 2 NeGcon Steering Axis Deadzone swanstation_Controller2_SteeringDeadzone Sets deadzone size for steering axis.
Controller 2 NeGcon Twist Response swanstation_Controller2_TwistResponse Sets the twist response type for the left analog stick. 'Quadratic' allows for greater precision than 'Linear' when making small movements, and is more suited for modern controllers, While 'Cubic' further increases small movement precision, but 'exa
Controller 3 Force Analog Mode swanstation_Controller3_ForceAnalog Forces analog mode to be always on. May cause issues with some games. Only use this option for games that support analog mode but do not automatically enable it themselves. When disabled, analog mode can be toggled by pressing and holding the DualSh
Controller 3 Use Analog Sticks for D-Pad in Digital Mode swanstation_Controller3_AnalogDPadInDigitalMode Allows you to use the analog sticks to control the d-pad in digital mode, as well as the buttons.
Controller 3 Analog Axis Scale swanstation_Controller3_AxisScale Sets the analog stick axis scaling factor.
Controller 3 Vibration Bias swanstation_Controller3_VibrationBias Applies an offset to vibration intensities, higher values will make smaller vibrations more noticable.
Controller 3 NeGcon Steering Axis Deadzone swanstation_Controller3_SteeringDeadzone Sets deadzone size for steering axis.
Controller 3 NeGcon Twist Response swanstation_Controller3_TwistResponse Sets the twist response type for the left analog stick. 'Quadratic' allows for greater precision than 'Linear' when making small movements, and is more suited for modern controllers, While 'Cubic' further increases small movement precision, but 'exa
Controller 4 Force Analog Mode swanstation_Controller4_ForceAnalog Forces analog mode to be always on. May cause issues with some games. Only use this option for games that support analog mode but do not automatically enable it themselves. When disabled, analog mode can be toggled by pressing and holding the DualSh
Controller 4 Use Analog Sticks for D-Pad in Digital Mode swanstation_Controller4_AnalogDPadInDigitalMode Allows you to use the analog sticks to control the d-pad in digital mode, as well as the buttons.
Controller 4 Analog Axis Scale swanstation_Controller4_AxisScale Sets the analog stick axis scaling factor.
Controller 4 Vibration Bias swanstation_Controller4_VibrationBias Applies an offset to vibration intensities, higher values will make smaller vibrations more noticable.
Controller 4 NeGcon Steering Axis Deadzone swanstation_Controller4_SteeringDeadzone Sets deadzone size for steering axis.
Controller 4 NeGcon Twist Response swanstation_Controller4_TwistResponse Sets the twist response type for the left analog stick. 'Quadratic' allows for greater precision than 'Linear' when making small movements, and is more suited for modern controllers, While 'Cubic' further increases small movement precision, but 'exa
Controller 5 Force Analog Mode swanstation_Controller5_ForceAnalog Forces analog mode to be always on. May cause issues with some games. Only use this option for games that support analog mode but do not automatically enable it themselves. When disabled, analog mode can be toggled by pressing and holding the DualSh
Controller 5 Use Analog Sticks for D-Pad in Digital Mode swanstation_Controller5_AnalogDPadInDigitalMode Allows you to use the analog sticks to control the d-pad in digital mode, as well as the buttons.
Controller 5 Analog Axis Scale swanstation_Controller5_AxisScale Sets the analog stick axis scaling factor.
Controller 5 Vibration Bias swanstation_Controller5_VibrationBias Applies an offset to vibration intensities, higher values will make smaller vibrations more noticable.
Controller 6 Force Analog Mode swanstation_Controller6_ForceAnalog Forces analog mode to be always on. May cause issues with some games. Only use this option for games that support analog mode but do not automatically enable it themselves. When disabled, analog mode can be toggled by pressing and holding the DualSh
Controller 6 Use Analog Sticks for D-Pad in Digital Mode swanstation_Controller6_AnalogDPadInDigitalMode Allows you to use the analog sticks to control the d-pad in digital mode, as well as the buttons.
Controller 6 Analog Axis Scale swanstation_Controller6_AxisScale Sets the analog stick axis scaling factor.
Controller 6 Vibration Bias swanstation_Controller6_VibrationBias Applies an offset to vibration intensities, higher values will make smaller vibrations more noticable.
Controller 7 Force Analog Mode swanstation_Controller7_ForceAnalog Forces analog mode to be always on. May cause issues with some games. Only use this option for games that support analog mode but do not automatically enable it themselves. When disabled, analog mode can be toggled by pressing and holding the DualSh
Controller 7 Use Analog Sticks for D-Pad in Digital Mode swanstation_Controller7_AnalogDPadInDigitalMode Allows you to use the analog sticks to control the d-pad in digital mode, as well as the buttons.
Controller 7 Analog Axis Scale swanstation_Controller7_AxisScale Sets the analog stick axis scaling factor.
Controller 7 Vibration Bias swanstation_Controller7_VibrationBias Applies an offset to vibration intensities, higher values will make smaller vibrations more noticable.
Controller 8 Force Analog Mode swanstation_Controller8_ForceAnalog Forces analog mode to be always on. May cause issues with some games. Only use this option for games that support analog mode but do not automatically enable it themselves. When disabled, analog mode can be toggled by pressing and holding the DualSh
Controller 8 Use Analog Sticks for D-Pad in Digital Mode swanstation_Controller8_AnalogDPadInDigitalMode Allows you to use the analog sticks to control the d-pad in digital mode, as well as the buttons.
Controller 8 Analog Axis Scale swanstation_Controller8_AxisScale Sets the analog stick axis scaling factor.
Controller 8 Vibration Bias swanstation_Controller8_VibrationBias Applies an offset to vibration intensities, higher values will make smaller vibrations more noticable.
CD-ROM Async Readahead swanstation_CDROM_ReadaheadSectors Determines how far the CD-ROM thread will read ahead. Can reduce hitches on slow storage mediums or with compressed games.
CPU Overclocking swanstation_CPU_Overclock Runs the emulated CPU faster or slower than native speed, which can improve framerates in some games. Will break other games and increase system requirements, use with caution.
Apply Compatibility Settings swanstation_Main_ApplyGameSettings Automatically disables enhancements on games which are incompatible.
Log Level swanstation_Logging_LogLevel Sets the level of information logged by the core.
CPU Recompiler ICache swanstation_CPU_RecompilerICache Determines whether the CPU's instruction cache is simulated in the recompiler. Improves accuracy at a small cost to performance. If games are running too fast, try enabling this option.
CPU Recompiler Block Linking swanstation_CPU_RecompilerBlockLinking Enables the generated code to directly jump between blocks without going through the dispatcher. Provides a measurable speed boost.
CPU Recompiler Fast Memory Access swanstation_CPU_FastmemMode Uses page faults to determine hardware memory accesses at runtime. Can provide a significant performance improvement in some games, but make the core more difficult to debug.
CPU Recompiler Fast Memory Access Rewrite swanstation_CPU_FastmemRewrite Enables rewrites when CPU Recompiler Fast Memory Access is enabled. Can provide a measurable speed boost, but may cause the core to segfault on certain platforms.
Enable VRAM Write Texture Replacement swanstation_TextureReplacements_EnableVRAMWriteReplacements Replace WRAM write textures with DuckStation formatted texture packs from the textures folder inside the RetroArch install directory. Currently only works with the Vulkan renderer.
Preload Texture Replacements swanstation_TextureReplacements_PreloadTextures Preload VRAM write replacement textures to RAM
Internal Run-Ahead swanstation_Main_RunaheadFrameCount Simulates the system ahead of time and rolls back/replays to reduce input lag. Has very high system requirements.
Enable 8MB RAM (Dev Console) swanstation_Console_Enable8MBRAM Enabled an additional 6MB of RAM, usually present on dev consoles. Games have to use a larger heap size for this additional RAM to be usable, and may break games which rely on memory mirroring, so it should only be used with compatible mods.
Use Old MDEC Routines swanstation_Hacks_UseOldMDECRoutines Use old routines for MDEC content.
Use Alternative Audio Hook (Restart) swanstation_Audio_FastHook Use a faster and more efficient to submit audio samples to the frontend. Mostly safe to enable, but may hang for a select few games that rely on the old method to function. Requires the core to be restarted to apply.
Raspberry Pi 3 / Zero 2
Region pcsx_rearmed_region Specify which region the system is from. 'NTSC' is 60 Hz while 'PAL' is 50 Hz. 'Auto' will detect the region of the currently loaded content. Games may run faster or slower than normal if the incorrect region is selected.
BIOS Selection pcsx_rearmed_bios Specify which BIOS to use. 'Auto' will attempt to load a real bios file from the frontend 'system' directory, falling back to high level emulation if unavailable. 'HLE' forces high level BIOS emulation. It is recommended to use an official bios file
Show BIOS Boot Logo pcsx_rearmed_show_bios_bootlogo When using an official BIOS file, specify whether to show the PlayStation logo upon starting or resetting content. Warning: Enabling the boot logo may reduce game compatibility.
Enable Second Memory Card (Shared) pcsx_rearmed_memcard2 Emulate a second memory card in slot 2. This will be shared by all games.
Dynamic Recompiler pcsx_rearmed_drc Dynamically recompile PSX CPU instructions to native instructions. Much faster than using an interpreter, but may be less accurate on some platforms.
PSX CPU Clock Speed pcsx_rearmed_psxclock Overclock or under-clock the PSX CPU. Try adjusting this if the game is too slow, too fast or hangs. Default is 57.
(GPU) Slow linked list processing pcsx_rearmed_gpu_slow_llists Slower but more accurate GPU linked list processing. Needed by only a few games like Vampire Hunter D. Should be autodetected in most cases.
(GPU) Show Interlaced Video pcsx_rearmed_neon_interlace_enable_v2 When enabled, games that run in high resolution video modes (480i, 512i) will produced interlaced video output. While this displays correctly on CRT televisions, it will produce artifacts on modern displays. When disabled, all video is output in pro
Audio Reverb Effects pcsx_rearmed_spu_reverb Enable emulation of the reverb feature provided by the PSX SPU. Can be disabled to improve performance at the expense of reduced audio quality/authenticity.
Sound Interpolation pcsx_rearmed_spu_interpolation Enable emulation of the in-built audio interpolation provided by the PSX SPU. 'Gaussian' sounds closest to original hardware. 'Simple' improves performance but reduces quality. 'Cubic' has the highest performance requirements but produces increased
CD Audio pcsx_rearmed_nocdaudio Enable playback of CD (CD-DA) audio tracks. Can be disabled to improve performance in games that include CD audio, at the expense of missing music.
XA Decoding pcsx_rearmed_noxadecoding Enable playback of XA (eXtended Architecture ADPCM) audio tracks. Can be disabled to improve performance in games that include XA audio, at the expense of missing music.
Threaded SPU pcsx_rearmed_spu_thread Emulates the PSX SPU on another CPU thread. May cause audio glitches in some games.
Analog Axis Bounds pcsx_rearmed_analog_axis_modifier Specify range limits for the left and right analog sticks when input device is set to 'analog' or 'dualshock'. 'Square' bounds improve input response when using controllers with highly circular ranges that are unable to fully saturate the X and Y ax
Rumble Effects pcsx_rearmed_vibration Enable haptic feedback when using a rumble-equipped gamepad with input device set to 'dualshock'.
DualShock Analog Mode Toggle Key Combo pcsx_rearmed_analog_combo When the input device type is DualShock, this option allows the emulated DualShock to be toggled between DIGITAL and ANALOG mode like original hardware. You can select the button combination for this.
Multitap Mode pcsx_rearmed_multitap Connect a virtual PSX Multitap peripheral to either controller 'Port 1' or controller 'Port 2' for 5 player simultaneous input, or to both 'Ports 1 and 2' for 8 player input. Mutlitap usage requires compatible games.
NegCon Twist Deadzone pcsx_rearmed_negcon_deadzone Set the deadzone of the RetroPad left analog stick when simulating the 'twist' action of emulated neGcon Controllers. Used to eliminate drift/unwanted input.
NegCon Twist Response pcsx_rearmed_negcon_response Specify the analog response when using a RetroPad left analog stick to simulate the 'twist' action of emulated neGcon Controllers.
Mouse Sensitivity pcsx_rearmed_input_sensitivity Adjust responsiveness of emulated 'mouse' input devices.
Player 1 Lightgun Crosshair pcsx_rearmed_crosshair1 Toggle player 1's crosshair for the Guncon or Konami Gun
Player 2 Lightgun Crosshair pcsx_rearmed_crosshair2 Toggle player 2's crosshair for the Guncon or Konami Gun
Konami Gun X Axis Offset pcsx_rearmed_konamigunadjustx Apply an X axis offset to light gun input when emulating a Konami Gun (Hyper Blaster / Justifier) device. Can be used to correct aiming misalignments.
Konami Gun Y Axis Offset pcsx_rearmed_konamigunadjusty Apply a Y axis offset to light gun input when emulating a Konami Gun (Hyper Blaster / Justifier) device. Can be used to correct aiming misalignments.
Guncon X Axis Offset pcsx_rearmed_gunconadjustx Apply an X axis offset to light gun input when emulating a Guncon device. Can be used to correct aiming misalignments.
Guncon Y Axis Offset pcsx_rearmed_gunconadjusty Apply a Y axis offset to light gun input when emulating a Guncon device. Can be used to correct aiming misalignments.
Guncon X Axis Response pcsx_rearmed_gunconadjustratiox Adjust relative magnitude of horizontal light gun motion when emulating a Guncon device. Can be used to correct aiming misalignments.
Guncon Y Axis Response pcsx_rearmed_gunconadjustratioy Adjust relative magnitude of vertical light gun motion when emulating a Guncon device. Can be used to correct aiming misalignments.
Instruction Cache Emulation pcsx_rearmed_icache_emulation Enable emulation of the PSX CPU instruction cache. Improves accuracy at the expense of increased performance overheads. Required for Formula One 2001, Formula One Arcade and Formula One 99. [Interpreter only; partial on lightrec and ARM dynarecs]
Exception and Breakpoint Emulation pcsx_rearmed_exception_emulation Enable emulation of some almost never used PSX's debug features. This causes a performance hit, is not useful for games and is intended for PSX homebrew and romhack developers only. Only enable if you know what you are doing. [Interpreter only]
Disable Automatic Compatibility Hacks pcsx_rearmed_nocompathacks By default, PCSX-ReARMed will apply auxiliary compatibility hacks automatically, based on the currently loaded content. This behaviour is required for correct operation, but may be disabled if desired.
Disable CPU/GTE Stalls pcsx_rearmed_nostalls Will cause some games to run too quickly.
(Speed Hack) Disable SMC Checks pcsx_rearmed_nosmccheck Will cause crashes when loading, and lead to memory card failure.
(Speed Hack) Assume GTE Registers Unneeded pcsx_rearmed_gteregsunneeded May cause rendering errors.
(Speed Hack) Disable GTE Flags pcsx_rearmed_nogteflags Will cause rendering errors.

Panasonic 3DO

Setting Key Info
BIOS (rom1) opera_bios Select which official system BIOS (hardware revision) to use when performing emulation. Only files present in RetroArch's system directory are listed.
Font (rom2) opera_font Select which official 'font rom' to use when performing emulation. Required by some Japanese games, otherwise optional. Only files present in RetroArch's system directory are listed.
CPU Overclock opera_cpu_overclock Increase clock speed of the emulated 3DO's 12.5MHz ARM60 CPU. Dramatically improves frame rates in many games (e.g. The Need For Speed), but increases performance requirements and in some cases has no effect (or may cause glitches).
Mode opera_region Select the resolution and field rate. NOTE: some EU games require a EU ROM.
VDLP Bypass CLUT opera_vdlp_bypass_clut Force 3DO VDLP to bypass the game's CLUT (color lookup table). May result in incorrect colors but faster rendering.
MADAM Matrix Engine opera_madam_matrix_engine 'MADAM' is the 3DO's graphics accelerator. It contains a custom maths co-processor, used by the 3DO's CPU to offload matrix operations. This corresponds to running in 'Hardware' - but the 3DO could also utilise a built-in ARM 'Software' version of t
OperaOS SWI HLE opera_swi_hle 3DO games are built on top of Portfolio OS. Opera has high level emulation of certain OS functions. This HLE may improve performance in on certain games.
Threaded DSP opera_dsp_threaded Run the DSP (audio processor) on a separate CPU thread. Improves performance on multi-core systems. !EXPERIMENTAL!
NVRAM Storage opera_nvram_storage Selects whether NVRAM saves should be created per-game or as a single NVRAM file shared between all games.
NVRAM Version opera_nvram_version Select the NVRAM version.
Active Input Devices opera_active_devices There exists a bug (perhaps in Opera itself, but possibly in certain games) where having more than 1 emulated controller causes content to ignore gamepad input. Setting 'Active Input Devices' to 1 provides a workaround for this issue.
Hide Lightgun Crosshairs opera_hide_lightgun_crosshairs Hides lightgun crosshairs for all players.
Timing Hack 1 (Crash 'n Burn) opera_hack_timing_1 This must be enabled for correct operation of the game 'Crash 'n Burn'.
Timing Hack 3 (Dinopark Tycoon) opera_hack_timing_3 This must be enabled for correct operation of the game 'Dinopark Tycoon'.
Timing Hack 5 (Microcosm) opera_hack_timing_5 This must be enabled for correct operation of the game 'Microcosm'.
Timing Hack 6 (Alone in the Dark) opera_hack_timing_6 This must be enabled for correct operation of the game 'Alone in the Dark'.
Graphics Step Y Hack (Samurai Showdown) opera_hack_graphics_step_y This must be enabled for backgrounds to render correctly when running the game 'Samurai Showdown'.
Debug Output opera_kprint Print 3DO debug port output to stderr. Only really useful to 3DO homebrew developers.

Philips CD-I

Setting Key Info
Read configuration same_cdi_read_config n/a
Write configuration same_cdi_write_config n/a
Save state naming same_cdi_saves n/a
NVRAM Saves per game same_cdi_nvram_saves n/a
Auto save/load states same_cdi_auto_save n/a
Enable in-game mouse same_cdi_mouse_enable n/a
Lightgun mode same_cdi_lightgun_mode n/a
Profile Buttons according to games (Restart) same_cdi_buttons_profiles n/a
Enable throttle same_cdi_throttle n/a
Enable cheats same_cdi_cheats_enable n/a
Main CPU Overclock same_cdi_cpu_overclock n/a
MAME Joystick 4-way simulation same_cdi_mame_4way_enable n/a

Amstrad CPC

Setting Key Info
Controls > User 1 Controller Config cap32_retrojoy0 n/a
Controls > User 2 Controller Config cap32_retrojoy1 n/a
Controls > Combo Key cap32_combokey n/a
Controls > Use internal Remap DB cap32_db_mapkeys n/a
Light Gun > Input cap32_lightgun_input n/a
Light Gun > Show Crosshair cap32_lightgun_show n/a
Model cap32_model n/a
Advanced > Autorun cap32_autorun n/a
Advanced > Ram size cap32_ram n/a
Video > Green Phosphor blueish cap32_advanced_green_phosphor n/a
Video > Monitor Intensity cap32_scr_intensity n/a
Status Bar cap32_statusbar n/a
Keyboard Transparency cap32_keyboard_transparency n/a
Floppy Sound cap32_floppy_sound n/a
Monitor Type cap32_scr_tube n/a
CPC Language cap32_lang_layout n/a

Commodore 64

Setting Key Info
System > Model vice_c64_model 'Automatic' switches region per file path tags.
Changing while running resets the system!
System > RAM Expansion Unit vice_ram_expansion_unit Changing while running resets the system!
System > Printer vice_printer Output is written to 'saves/vice_printer.txt'.
System > JiffyDOS vice_jiffydos 'True Drive Emulation' & 1541/1571/1581 drive & ROMs required in 'system/vice':
- 'JiffyDOS_C64.bin'
- 'JiffyDOS_1541-II.bin'
- 'JiffyDOS_1571_repl310654.bin'
- 'JiffyDOS_1581.bin'
System > Read 'vicerc' vice_read_vicerc Process first found 'vicerc' in this order:
1. 'saves/[content].vicerc'
2. 'saves/vicerc'
3. 'system/vice/vicerc'
System > Reset Type vice_reset Reset hotkey action. Core restart will autostart.
- 'Autostart' hard resets and reruns content.
- 'Soft' keeps some code in memory.
- 'Hard' erases all memory.
- 'Freeze' is for cartridges.
Audio > Drive Sound Emulation vice_drive_sound_emulation 'True Drive Emulation' & D64/D71 disk image required.
Audio > Datasette Sound vice_datasette_sound TAP tape image required.
Audio > VIC-II Audio Leak Emulation vice_audio_leak_emulation Graphic chip to audio leak emulation.
Audio > SID Engine vice_sid_engine 'ReSID' is accurate, 'ReSID-FP' is more accurate, 'FastSID' is the last resort.
Audio > SID Model vice_sid_model C64 has '6581', C64C has '8580'.
Audio > SID Extra vice_sid_extra Second SID base address.
Audio > ReSID Sampling vice_resid_sampling 'Resampling' provides best quality. 'Fast' improves performance dramatically on PS Vita.
Audio > ReSID Filter Passband vice_resid_passband Resampling filter passband in percentage of the total bandwidth.
Audio > ReSID Filter Gain vice_resid_gain Filter gain in percent.
Audio > ReSID Filter 6581 Bias vice_resid_filterbias Filter bias for 6581, which can be used to adjust DAC bias in millivolts.
Audio > ReSID Filter 8580 Bias vice_resid_8580filterbias Filter bias for 8580, which can be used to adjust DAC bias in millivolts.
Audio > SFX Sound Expander vice_sfx_sound_expander Sound synthesizer cartridge with 9 voices.
Audio > Sample Rate vice_sound_sample_rate Sound sample rate in Hz.
Video > VIC-II Filter vice_vicii_filter PAL emulation filter with custom horizontal blur.
Video > VIC-II Filter Oddline Offset vice_vicii_filter_oddline_offset PAL emulation filter oddline offset.
Video > VIC-II Filter Oddline Phase vice_vicii_filter_oddline_phase PAL emulation filter oddline phase. Applies with 'Internal' palette only!
Video > VIC-II Color Palette vice_external_palette 'Colodore' is recommended for most accurate colors.
Video > VIC-II Color Gamma vice_vicii_color_gamma Gamma for the internal palette.
Video > VIC-II Color Brightness vice_vicii_color_brightness Brightness for the internal palette.
Video > VIC-II Color Contrast vice_vicii_color_contrast Contrast for the internal palette.
Video > VIC-II Color Saturation vice_vicii_color_saturation Saturation for the internal palette.
Video > VIC-II Color Tint vice_vicii_color_tint Tint for the internal palette.
Video > Color Depth vice_gfx_colors Full restart required.
Media > Automatic Load Warp vice_autoloadwarp Toggle warp mode during disk and/or tape access if there is no audio output. Mutes 'Drive Sound Emulation', 'Datasette Sound' and 'Audio Leak Emulation' when not ignoring audio.
'True Drive Emulation' required with disks!
Media > Warp Boost vice_warp_boost Make warp mode much faster by changing SID emulation to 'FastSID' while warping.
Media > Autostart vice_autostart 'ON' always runs content, 'OFF' runs only PRG/CRT, 'Warp' turns warp mode on during autostart loading.
Media > True Drive Emulation vice_drive_true_emulation Loads much slower, but some games need it.
Required for 'JiffyDOS', 'Automatic Load Warp' and LED driver interface!
Media > Virtual Device Traps vice_virtual_device_traps Required for printer device, but causes loading issues on rare cases.
Media > Floppy Write Protection vice_floppy_write_protection Set device 8 read only.
Media > EasyFlash Write Protection vice_easyflash_write_protection Set EasyFlash cartridges read only.
Media > Global Work Disk vice_work_disk Work disk in device 8 will not be inserted when floppy content is launched. Files and directories are named 'vice_work'.
Media > Cartridge vice_cartridge Cartridge images go in 'system/vice/C64'.
Changing while running resets the system!
Input > Analog Stick Mouse vice_analogmouse Override analog stick remappings when non-joysticks are used. 'OFF' controls mouse/paddles with both analogs when remappings are empty.
Input > Analog Stick Mouse Deadzone vice_analogmouse_deadzone Required distance from stick center to register input.
Input > Analog Stick Mouse Speed vice_analogmouse_speed Mouse movement speed multiplier for analog stick.
Input > D-Pad Mouse Speed vice_dpadmouse_speed Mouse movement speed multiplier for directional pad.
Input > Mouse Speed vice_mouse_speed Global mouse speed.
Input > Keyboard Pass-through vice_physical_keyboard_pass_through 'ON' passes all physical keyboard events to the core. 'OFF' prevents RetroPad keys from generating keyboard events.
Input > Datasette Hotkeys vice_datasette_hotkeys Toggle all Datasette hotkeys.
Input > Keyrah Keypad Mappings vice_keyrah_keypad_mappings Hardcoded keypad to joyport mappings for Keyrah hardware.
Input > Keyboard Keymap vice_keyboard_keymap User-defined keymaps go in 'system/vice/C64'.
- Positional: 'sdl_pos.vkm'
- Symbolic: 'sdl_sym.vkm'
RetroPad > Turbo Fire vice_turbo_fire Hotkey toggling disables this option until core restart.
RetroPad > Turbo Button vice_turbo_fire_button Replace the mapped button with turbo fire button.
RetroPad > Turbo Pulse vice_turbo_pulse Frames in a button cycle.
- '2' = 1 frame down, 1 frame up
- '4' = 2 frames down, 2 frames up
- '6' = 3 frames down, 3 frames up
etc.
Input > Userport Joystick Adapter vice_userport_joytype Required for more than 2 joysticks, for example IK+ Gold with 3 players.
RetroPad > Joystick Port vice_joyport Most games use port 2, some use port 1.
Filename forcing or hotkey toggling disables this option until core restart.
RetroPad > Joystick Port Type vice_joyport_type Non-joysticks are plugged in current port only and are controlled with left analog stick or mouse. Paddles are split to 1st and 2nd RetroPort.
RetroPad > Face Button Options vice_retropad_options Rotate face buttons clockwise and/or make 2nd fire press up.
Hotkey > Toggle Virtual Keyboard vice_mapper_vkbd Press the mapped key to toggle the virtual keyboard.
Hotkey > Toggle Statusbar vice_mapper_statusbar Press the mapped key to toggle the statusbar.
Hotkey > Switch Joyport vice_mapper_joyport_switch Press the mapped key to switch joyports 1 & 2.
Switching disables 'RetroPad Port' option until core restart.
Hotkey > Toggle Turbo Fire vice_mapper_turbo_fire_toggle Press the mapped key to toggle turbo fire.
Hotkey > Toggle Save Disk vice_mapper_save_disk_toggle Press the mapped key to create/insert/eject a save disk.
Hotkey > Toggle Aspect Ratio vice_mapper_aspect_ratio_toggle Press the mapped key to toggle aspect ratio.
Toggling disables 'Pixel Aspect Ratio' option until core restart.
Hotkey > Toggle Zoom Mode vice_mapper_zoom_mode_toggle Hidden placeholder for backwards compatibility.
Hotkey > Toggle Datasette Hotkeys vice_mapper_datasette_toggle_hotkeys Press the mapped key to toggle Datasette hotkeys.
Hotkey > Datasette PLAY vice_mapper_datasette_start Press play on tape.
Hotkey > Datasette STOP vice_mapper_datasette_stop Press stop on tape.
Hotkey > Datasette REWIND vice_mapper_datasette_rewind Press rewind on tape.
Hotkey > Datasette F.FWD vice_mapper_datasette_forward Press fast forward on tape.
Hotkey > Datasette RESET vice_mapper_datasette_reset Reset tape to beginning.
Hotkey > Reset vice_mapper_reset Press the mapped key to trigger the selected 'Reset Type'.
Hotkey > Hold Warp Mode vice_mapper_warp_mode Hold the mapped key for warp mode.
RetroPad > Up vice_mapper_up Unmapped defaults to joystick up.
RetroPad > Down vice_mapper_down Unmapped defaults to joystick down.
RetroPad > Left vice_mapper_left Unmapped defaults to joystick left.
RetroPad > Right vice_mapper_right Unmapped defaults to joystick right.
RetroPad > B vice_mapper_b Unmapped defaults to fire button.
VKBD: Press selected key.
RetroPad > A vice_mapper_a Unmapped defaults to 2nd fire button.
VKBD: Toggle transparency. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > Y vice_mapper_y VKBD: Toggle 'ShiftLock'. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > X vice_mapper_x VKBD: Press 'Space'. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > Select vice_mapper_select VKBD comes up with RetroPad Select by default.
RetroPad > Start vice_mapper_start VKBD: Press 'Return'. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > L vice_mapper_l n/a
RetroPad > R vice_mapper_r n/a
RetroPad > L2 vice_mapper_l2 n/a
RetroPad > R2 vice_mapper_r2 n/a
RetroPad > L3 vice_mapper_l3 n/a
RetroPad > R3 vice_mapper_r3 n/a
RetroPad > Left Analog > Up vice_mapper_lu n/a
RetroPad > Left Analog > Down vice_mapper_ld n/a
RetroPad > Left Analog > Left vice_mapper_ll n/a
RetroPad > Left Analog > Right vice_mapper_lr n/a
RetroPad > Right Analog > Up vice_mapper_ru n/a
RetroPad > Right Analog > Down vice_mapper_rd n/a
RetroPad > Right Analog > Left vice_mapper_rl n/a
RetroPad > Right Analog > Right vice_mapper_rr n/a
OSD > Virtual KBD Theme vice_vkbd_theme The keyboard comes up with RetroPad Select by default.
OSD > Virtual KBD Transparency vice_vkbd_transparency Keyboard transparency can be toggled with RetroPad A.
OSD > Virtual KBD Dimming vice_vkbd_dimming Dimming level of the surrounding area.
OSD > Statusbar Mode vice_statusbar - 'Full': Joyports + Messages + LEDs
- 'Basic': Messages + LEDs
- 'Minimal': LED colors only
OSD > Statusbar Startup vice_statusbar_startup Show statusbar on startup.
OSD > Statusbar Messages vice_statusbar_messages Show messages when statusbar is hidden.
OSD > Light Pen/Gun Pointer Color vice_joyport_pointer_color Crosshair color for light pens and guns.

Commodore Amiga

Setting Key Info
System > Model puae_model 'Automatic' defaults to 'A500' with floppy disks, 'A1200' with hard drives and 'CD32' with compact discs. 'Automatic' can be overridden with file path tags.



Core restart required.
System > Show Automatic Model Options puae_model_options_display Show/hide default model options (Floppy/HD/CD) for 'Automatic' model.
Model > Automatic Floppy puae_model_fd Default model when floppies are launched with 'Automatic' model.

Core restart required.
Model > Automatic HD puae_model_hd Default model when HD interface is used with 'Automatic' model. Affects WHDLoad installs and other hard drive images.

Core restart required.
Model > Automatic CD puae_model_cd Default model when compact discs are launched with 'Automatic' model.

Core restart required.
System > Kickstart ROM puae_kickstart 'Automatic' defaults to the most compatible version for the model. 'AROS' is a built-in replacement with fair compatibility.

Core restart required.
System > Chip RAM puae_chipmem_size 'Automatic' defaults to the current preset model.

Core restart required.
System > Slow RAM puae_bogomem_size 'Automatic' defaults to the current preset model.

Core restart required.
System > Z2 Fast RAM puae_fastmem_size 'Automatic' defaults to the current preset model.

Core restart required.
System > Z3 Fast RAM puae_z3mem_size 'Automatic' defaults to the current preset model.

Core restart required.
System > CPU Model puae_cpu_model 'Automatic' defaults to the current preset model.

Core restart required.
System > FPU Model puae_fpu_model 'Automatic' defaults to the current preset model.

Core restart required.
System > CPU Speed puae_cpu_throttle Ignored with 'Cycle-exact'.
System > CPU Cycle-exact Speed puae_cpu_multiplier Applies only with 'Cycle-exact'.
System > CPU Compatibility puae_cpu_compatibility Some games have graphic and/or speed issues without 'Cycle-exact'. 'Cycle-exact' can be forced with '(CE)' file path tag.
Audio > Stereo Separation puae_sound_stereo_separation Paula sound chip channel panning. Does not affect CD audio.
Audio > Interpolation puae_sound_interpol Paula sound chip interpolation type.
Audio > Filter puae_sound_filter 'Emulated' allows states between ON/OFF.
Audio > Filter Type puae_sound_filter_type 'Automatic' picks the filter type for the hardware.
Audio > Floppy Sound Emulation puae_floppy_sound Floppy volume in percent.
Audio > Floppy Sound Mute Ejected puae_floppy_sound_empty_mute Mute drive head clicking when floppy is not inserted.
Audio > Floppy Sound Type puae_floppy_sound_type External files go in 'system/uae/' or 'system/uae_data/'.
Audio > CD Audio Volume puae_sound_volume_cd CD volume in percent.
Video > Allow Hz Change puae_video_allow_hz_change Let Amiga decide the exact refresh rate when interlace mode or PAL/NTSC changes. 'Locked' changes only when video standard changes.

Core restart required.
Video > Standard puae_video_standard Output Hz & height:
- 'PAL': 50Hz - 288px / 576px
- 'NTSC': 60Hz - 240px / 480px
- 'Automatic' switches region per file path tags.
Video > Immediate/Waiting Blits puae_immediate_blits - 'Immediate Blitter': Faster but less compatible blitter emulation.
- 'Wait for Blitter': Compatibility hack for programs that don't wait for the blitter correctly.
Video > Collision Level puae_collision_level 'Sprites and Playfields' is recommended.
Video > Color Gamma puae_gfx_gamma Adjust color gamma.
Media > Automatic Load Fast-Forward puae_autoloadfastforward Toggle frontend fast-forward during media access if there is no audio output. Mutes 'Floppy Sound Emulation'.
Media > Floppy Speed puae_floppy_speed Default speed is 300RPM. 'Turbo' removes disk rotation emulation.
Media > Floppy MultiDrive puae_floppy_multidrive Insert each disk in different drives. Can be forced with '(MD)' file path tag. Maximum is 4 disks due to external drive limit! Not all games support external drives!

Core restart required.
Media > Floppy Write Protection puae_floppy_write_protection Set all drives read only. Changing this while emulation is running ejects and reinserts all disks. IPF images are always read-only!
Media > Floppy Write Redirect puae_floppy_write_redirect Writes to a substitute disk under 'saves' instead of original disks. Works also with IPF images.
Media > CD Speed puae_cd_speed Transfer rate in CD32 is 300KB/s (double-speed), CDTV is 150KB/s (single-speed). 'Turbo' removes seek delay emulation.
Media > CD Startup Delayed Insert puae_cd_startup_delayed_insert Some games fail to load if CD32/CDTV is powered on with CD inserted. 'ON' inserts CD during boot animation.
Media > CD32/CDTV Shared NVRAM puae_shared_nvram 'OFF' saves separate files per content. Starting without content uses the shared file. CD32 and CDTV use separate shared files.

Core restart required.
Media > WHDLoad Support puae_use_whdload Enable launching pre-installed WHDLoad installs. Creates a helper boot image for loading content and an empty image for saving. Legacy 'HDFs' mode is not recommended!

Core restart required.
- 'Files' creates data in directories
- 'HDFs' creates data
Media > WHDLoad Theme puae_use_whdload_theme AmigaOS 'system-configuration' color prefs in WHDLoad helper image. Available only with 'Files' mode.

Core restart required.
- 'Default' = Black/White/DarkGray/LightGray
- 'Native' = Gray/Black/White/LightBlue
Media > WHDLoad Splash Screen puae_use_whdload_prefs Space/Enter/Fire works as WHDLoad Start-button.

Core restart required.

Override with buttons while booting:
- 'Config': Hold 2nd fire / Blue
- 'Splash': Hold LMB
- 'Config + Splash': Hold RMB
- ReadMe + MkCustom: Hold Red+Blue
Media > WHDLoad NoWriteCache puae_use_whdload_nowritecache Write save data immediately or on WHDLoad quit. Write cache enabled runs the core a few frames after frontend quit in order to trigger WHDLoad quit and flush the cache.

Core restart required.
Media > Global Boot HD puae_use_boot_hd Attach a hard disk meant for Workbench, not for WHDLoad! Enabling forces a model with HD interface. Changing HDF size will not replace or edit the existing HDF.

Core restart required.
Media > Cartridge puae_cart_file Cartridge images go in 'system/uae/' or 'system/uae_data/'.

Core restart required.
Input > Analog Stick Mouse puae_analogmouse Default mouse control stick when remappings are empty.
Input > Analog Stick Mouse Deadzone puae_analogmouse_deadzone Required distance from stick center to register input.
Input > Analog Stick Mouse Speed puae_analogmouse_speed Mouse movement speed multiplier for analog stick.
Input > D-Pad Mouse Speed puae_dpadmouse_speed Mouse movement speed multiplier for directional pad.
Input > Mouse Speed puae_mouse_speed Global mouse speed.
Input > Physical Mouse puae_physicalmouse 'Double' requirements: raw/udev input driver and proper mouse index per port.

Does not affect RetroPad emulated mice.
Input > Keyboard Pass-through puae_physical_keyboard_pass_through 'ON' passes all physical keyboard events to the core. 'OFF' prevents RetroPad keys from generating keyboard events.
Input > Keyrah Keypad Mappings puae_keyrah_keypad_mappings Hardcoded keypad to joyport mappings for Keyrah hardware.
RetroPad > Turbo Fire puae_turbo_fire Hotkey toggling disables this option until core restart.
RetroPad > Turbo Button puae_turbo_fire_button Replace the mapped button with turbo fire button.
RetroPad > Turbo Pulse puae_turbo_pulse Frames in a button cycle.
- '2' = 1 frame down, 1 frame up
- '4' = 2 frames down, 2 frames up
- '6' = 3 frames down, 3 frames up
etc.
RetroPad > Joystick/Mouse puae_joyport Change D-Pad control between joyports. Hotkey toggling disables this option until core restart.
RetroPad > Joystick Port Order puae_joyport_order Plug RetroPads in different ports. Useful for 4-player adapters.
RetroPad > Face Button Options puae_retropad_options Rotate face buttons clockwise and/or make 2nd fire press up.
CD32 Pad > Face Button Options puae_cd32pad_options Rotate face buttons clockwise and/or make blue button press up.
Hotkey > Toggle Virtual Keyboard puae_mapper_vkbd Press the mapped key to toggle the virtual keyboard.
Hotkey > Toggle Statusbar puae_mapper_statusbar Press the mapped key to toggle the statusbar.
Hotkey > Switch Joystick/Mouse puae_mapper_mouse_toggle Press the mapped key to switch between joystick and mouse control.
Hotkey > Toggle Turbo Fire puae_mapper_turbo_fire_toggle Press the mapped key to toggle turbo fire.
Hotkey > Toggle Save Disk puae_mapper_save_disk_toggle Press the mapped key to create/insert/eject a save disk.
Hotkey > Toggle Aspect Ratio puae_mapper_aspect_ratio_toggle Press the mapped key to toggle between PAL/NTSC pixel aspect ratio.
Hotkey > Toggle Zoom Mode puae_mapper_zoom_mode_toggle Hidden placeholder for backwards compatibility.
Hotkey > Reset puae_mapper_reset Press the mapped key to trigger soft reset (Ctrl-Amiga-Amiga).
RetroPad > Up puae_mapper_up Unmapped defaults to joystick up.
RetroPad > Down puae_mapper_down Unmapped defaults to joystick down.
RetroPad > Left puae_mapper_left Unmapped defaults to joystick left.
RetroPad > Right puae_mapper_right Unmapped defaults to joystick right.
RetroPad > B puae_mapper_b Unmapped defaults to fire button.

VKBD: Press selected key.
RetroPad > A puae_mapper_a Unmapped defaults to 2nd fire button.

VKBD: Toggle transparency. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > Y puae_mapper_y VKBD: Toggle 'CapsLock'. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > X puae_mapper_x VKBD: Press 'Space'. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > Select puae_mapper_select VKBD comes up with RetroPad Select by default.
RetroPad > Start puae_mapper_start VKBD: Press 'Return'. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > L puae_mapper_l n/a
RetroPad > R puae_mapper_r n/a
RetroPad > L2 puae_mapper_l2 n/a
RetroPad > R2 puae_mapper_r2 n/a
RetroPad > L3 puae_mapper_l3 n/a
RetroPad > R3 puae_mapper_r3 n/a
RetroPad > Left Analog > Up puae_mapper_lu n/a
RetroPad > Left Analog > Down puae_mapper_ld n/a
RetroPad > Left Analog > Left puae_mapper_ll n/a
RetroPad > Left Analog > Right puae_mapper_lr n/a
RetroPad > Right Analog > Up puae_mapper_ru n/a
RetroPad > Right Analog > Down puae_mapper_rd n/a
RetroPad > Right Analog > Left puae_mapper_rl n/a
RetroPad > Right Analog > Right puae_mapper_rr n/a
OSD > Virtual KBD Theme puae_vkbd_theme The keyboard comes up with RetroPad Select by default.
OSD > Virtual KBD Transparency puae_vkbd_transparency Keyboard transparency can be toggled with RetroPad A.
OSD > Virtual KBD Dimming puae_vkbd_dimming Dimming level of the surrounding area.
OSD > Statusbar Mode puae_statusbar - 'Full': Joyports + Messages + LEDs
- 'Basic': Messages + LEDs
- 'Minimal': LED colors only
OSD > Statusbar Startup puae_statusbar_startup Show statusbar on startup.
OSD > Statusbar Messages puae_statusbar_messages Show messages when statusbar is hidden.
OSD > Light Pen/Gun Pointer Color puae_joyport_pointer_color Crosshair color for light pens and guns.

Commodore Amiga CD32

Setting Key Info
System > Model puae_model 'Automatic' defaults to 'A500' with floppy disks, 'A1200' with hard drives and 'CD32' with compact discs. 'Automatic' can be overridden with file path tags.



Core restart required.
System > Show Automatic Model Options puae_model_options_display Show/hide default model options (Floppy/HD/CD) for 'Automatic' model.
Model > Automatic Floppy puae_model_fd Default model when floppies are launched with 'Automatic' model.

Core restart required.
Model > Automatic HD puae_model_hd Default model when HD interface is used with 'Automatic' model. Affects WHDLoad installs and other hard drive images.

Core restart required.
Model > Automatic CD puae_model_cd Default model when compact discs are launched with 'Automatic' model.

Core restart required.
System > Kickstart ROM puae_kickstart 'Automatic' defaults to the most compatible version for the model. 'AROS' is a built-in replacement with fair compatibility.

Core restart required.
System > Chip RAM puae_chipmem_size 'Automatic' defaults to the current preset model.

Core restart required.
System > Slow RAM puae_bogomem_size 'Automatic' defaults to the current preset model.

Core restart required.
System > Z2 Fast RAM puae_fastmem_size 'Automatic' defaults to the current preset model.

Core restart required.
System > Z3 Fast RAM puae_z3mem_size 'Automatic' defaults to the current preset model.

Core restart required.
System > CPU Model puae_cpu_model 'Automatic' defaults to the current preset model.

Core restart required.
System > FPU Model puae_fpu_model 'Automatic' defaults to the current preset model.

Core restart required.
System > CPU Speed puae_cpu_throttle Ignored with 'Cycle-exact'.
System > CPU Cycle-exact Speed puae_cpu_multiplier Applies only with 'Cycle-exact'.
System > CPU Compatibility puae_cpu_compatibility Some games have graphic and/or speed issues without 'Cycle-exact'. 'Cycle-exact' can be forced with '(CE)' file path tag.
Audio > Stereo Separation puae_sound_stereo_separation Paula sound chip channel panning. Does not affect CD audio.
Audio > Interpolation puae_sound_interpol Paula sound chip interpolation type.
Audio > Filter puae_sound_filter 'Emulated' allows states between ON/OFF.
Audio > Filter Type puae_sound_filter_type 'Automatic' picks the filter type for the hardware.
Audio > Floppy Sound Emulation puae_floppy_sound Floppy volume in percent.
Audio > Floppy Sound Mute Ejected puae_floppy_sound_empty_mute Mute drive head clicking when floppy is not inserted.
Audio > Floppy Sound Type puae_floppy_sound_type External files go in 'system/uae/' or 'system/uae_data/'.
Audio > CD Audio Volume puae_sound_volume_cd CD volume in percent.
Video > Allow Hz Change puae_video_allow_hz_change Let Amiga decide the exact refresh rate when interlace mode or PAL/NTSC changes. 'Locked' changes only when video standard changes.

Core restart required.
Video > Standard puae_video_standard Output Hz & height:
- 'PAL': 50Hz - 288px / 576px
- 'NTSC': 60Hz - 240px / 480px
- 'Automatic' switches region per file path tags.
Video > Immediate/Waiting Blits puae_immediate_blits - 'Immediate Blitter': Faster but less compatible blitter emulation.
- 'Wait for Blitter': Compatibility hack for programs that don't wait for the blitter correctly.
Video > Collision Level puae_collision_level 'Sprites and Playfields' is recommended.
Video > Color Gamma puae_gfx_gamma Adjust color gamma.
Media > Automatic Load Fast-Forward puae_autoloadfastforward Toggle frontend fast-forward during media access if there is no audio output. Mutes 'Floppy Sound Emulation'.
Media > Floppy Speed puae_floppy_speed Default speed is 300RPM. 'Turbo' removes disk rotation emulation.
Media > Floppy MultiDrive puae_floppy_multidrive Insert each disk in different drives. Can be forced with '(MD)' file path tag. Maximum is 4 disks due to external drive limit! Not all games support external drives!

Core restart required.
Media > Floppy Write Protection puae_floppy_write_protection Set all drives read only. Changing this while emulation is running ejects and reinserts all disks. IPF images are always read-only!
Media > Floppy Write Redirect puae_floppy_write_redirect Writes to a substitute disk under 'saves' instead of original disks. Works also with IPF images.
Media > CD Speed puae_cd_speed Transfer rate in CD32 is 300KB/s (double-speed), CDTV is 150KB/s (single-speed). 'Turbo' removes seek delay emulation.
Media > CD Startup Delayed Insert puae_cd_startup_delayed_insert Some games fail to load if CD32/CDTV is powered on with CD inserted. 'ON' inserts CD during boot animation.
Media > CD32/CDTV Shared NVRAM puae_shared_nvram 'OFF' saves separate files per content. Starting without content uses the shared file. CD32 and CDTV use separate shared files.

Core restart required.
Media > WHDLoad Support puae_use_whdload Enable launching pre-installed WHDLoad installs. Creates a helper boot image for loading content and an empty image for saving. Legacy 'HDFs' mode is not recommended!

Core restart required.
- 'Files' creates data in directories
- 'HDFs' creates data
Media > WHDLoad Theme puae_use_whdload_theme AmigaOS 'system-configuration' color prefs in WHDLoad helper image. Available only with 'Files' mode.

Core restart required.
- 'Default' = Black/White/DarkGray/LightGray
- 'Native' = Gray/Black/White/LightBlue
Media > WHDLoad Splash Screen puae_use_whdload_prefs Space/Enter/Fire works as WHDLoad Start-button.

Core restart required.

Override with buttons while booting:
- 'Config': Hold 2nd fire / Blue
- 'Splash': Hold LMB
- 'Config + Splash': Hold RMB
- ReadMe + MkCustom: Hold Red+Blue
Media > WHDLoad NoWriteCache puae_use_whdload_nowritecache Write save data immediately or on WHDLoad quit. Write cache enabled runs the core a few frames after frontend quit in order to trigger WHDLoad quit and flush the cache.

Core restart required.
Media > Global Boot HD puae_use_boot_hd Attach a hard disk meant for Workbench, not for WHDLoad! Enabling forces a model with HD interface. Changing HDF size will not replace or edit the existing HDF.

Core restart required.
Media > Cartridge puae_cart_file Cartridge images go in 'system/uae/' or 'system/uae_data/'.

Core restart required.
Input > Analog Stick Mouse puae_analogmouse Default mouse control stick when remappings are empty.
Input > Analog Stick Mouse Deadzone puae_analogmouse_deadzone Required distance from stick center to register input.
Input > Analog Stick Mouse Speed puae_analogmouse_speed Mouse movement speed multiplier for analog stick.
Input > D-Pad Mouse Speed puae_dpadmouse_speed Mouse movement speed multiplier for directional pad.
Input > Mouse Speed puae_mouse_speed Global mouse speed.
Input > Physical Mouse puae_physicalmouse 'Double' requirements: raw/udev input driver and proper mouse index per port.

Does not affect RetroPad emulated mice.
Input > Keyboard Pass-through puae_physical_keyboard_pass_through 'ON' passes all physical keyboard events to the core. 'OFF' prevents RetroPad keys from generating keyboard events.
Input > Keyrah Keypad Mappings puae_keyrah_keypad_mappings Hardcoded keypad to joyport mappings for Keyrah hardware.
RetroPad > Turbo Fire puae_turbo_fire Hotkey toggling disables this option until core restart.
RetroPad > Turbo Button puae_turbo_fire_button Replace the mapped button with turbo fire button.
RetroPad > Turbo Pulse puae_turbo_pulse Frames in a button cycle.
- '2' = 1 frame down, 1 frame up
- '4' = 2 frames down, 2 frames up
- '6' = 3 frames down, 3 frames up
etc.
RetroPad > Joystick/Mouse puae_joyport Change D-Pad control between joyports. Hotkey toggling disables this option until core restart.
RetroPad > Joystick Port Order puae_joyport_order Plug RetroPads in different ports. Useful for 4-player adapters.
RetroPad > Face Button Options puae_retropad_options Rotate face buttons clockwise and/or make 2nd fire press up.
CD32 Pad > Face Button Options puae_cd32pad_options Rotate face buttons clockwise and/or make blue button press up.
Hotkey > Toggle Virtual Keyboard puae_mapper_vkbd Press the mapped key to toggle the virtual keyboard.
Hotkey > Toggle Statusbar puae_mapper_statusbar Press the mapped key to toggle the statusbar.
Hotkey > Switch Joystick/Mouse puae_mapper_mouse_toggle Press the mapped key to switch between joystick and mouse control.
Hotkey > Toggle Turbo Fire puae_mapper_turbo_fire_toggle Press the mapped key to toggle turbo fire.
Hotkey > Toggle Save Disk puae_mapper_save_disk_toggle Press the mapped key to create/insert/eject a save disk.
Hotkey > Toggle Aspect Ratio puae_mapper_aspect_ratio_toggle Press the mapped key to toggle between PAL/NTSC pixel aspect ratio.
Hotkey > Toggle Zoom Mode puae_mapper_zoom_mode_toggle Hidden placeholder for backwards compatibility.
Hotkey > Reset puae_mapper_reset Press the mapped key to trigger soft reset (Ctrl-Amiga-Amiga).
RetroPad > Up puae_mapper_up Unmapped defaults to joystick up.
RetroPad > Down puae_mapper_down Unmapped defaults to joystick down.
RetroPad > Left puae_mapper_left Unmapped defaults to joystick left.
RetroPad > Right puae_mapper_right Unmapped defaults to joystick right.
RetroPad > B puae_mapper_b Unmapped defaults to fire button.

VKBD: Press selected key.
RetroPad > A puae_mapper_a Unmapped defaults to 2nd fire button.

VKBD: Toggle transparency. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > Y puae_mapper_y VKBD: Toggle 'CapsLock'. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > X puae_mapper_x VKBD: Press 'Space'. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > Select puae_mapper_select VKBD comes up with RetroPad Select by default.
RetroPad > Start puae_mapper_start VKBD: Press 'Return'. Remapping to non-keyboard keys overrides VKBD function!
RetroPad > L puae_mapper_l n/a
RetroPad > R puae_mapper_r n/a
RetroPad > L2 puae_mapper_l2 n/a
RetroPad > R2 puae_mapper_r2 n/a
RetroPad > L3 puae_mapper_l3 n/a
RetroPad > R3 puae_mapper_r3 n/a
RetroPad > Left Analog > Up puae_mapper_lu n/a
RetroPad > Left Analog > Down puae_mapper_ld n/a
RetroPad > Left Analog > Left puae_mapper_ll n/a
RetroPad > Left Analog > Right puae_mapper_lr n/a
RetroPad > Right Analog > Up puae_mapper_ru n/a
RetroPad > Right Analog > Down puae_mapper_rd n/a
RetroPad > Right Analog > Left puae_mapper_rl n/a
RetroPad > Right Analog > Right puae_mapper_rr n/a
OSD > Virtual KBD Theme puae_vkbd_theme The keyboard comes up with RetroPad Select by default.
OSD > Virtual KBD Transparency puae_vkbd_transparency Keyboard transparency can be toggled with RetroPad A.
OSD > Virtual KBD Dimming puae_vkbd_dimming Dimming level of the surrounding area.
OSD > Statusbar Mode puae_statusbar - 'Full': Joyports + Messages + LEDs
- 'Basic': Messages + LEDs
- 'Minimal': LED colors only
OSD > Statusbar Startup puae_statusbar_startup Show statusbar on startup.
OSD > Statusbar Messages puae_statusbar_messages Show messages when statusbar is hidden.
OSD > Light Pen/Gun Pointer Color puae_joyport_pointer_color Crosshair color for light pens and guns.

Atari ST

Setting Key Info
Polarized Audio Filter hatari_polarized_filter Uses hatari's polarized lowpass filters on audio to simulate distortion.
Autoload hatari.cfg. hatari_autoload_config Loads SYSTEM\hatari\hatari.cfg on content start. Warning. Overrides everything except for selected TOS image.
System -> Atari Computer Machine Type hatari_machinetype Pick emulated machine. ST, STE, TT or Falcon (Needs Restart)
System -> Atari Computer Ramsize hatari_ramsize Set amount of emulated ram. (Needs Restart)
System -> TOS Image Used (Needs Restart) hatari_tosimage Select from list.
Place TOS images in system\hatari\tos\ folder.
Defaults to tos.img in SYSTEM folder
System -> Enable Fastboot hatari_fastboot Enable/Disable fast boot TOS patch.
System -> Reset Type hatari_reset_type Whether to Cold Start or Warm Start on "Restart".
Input -> Start In Mouse Mode hatari_start_in_mouse_mode Starts with emulated mouse active on port 1. Otherwise joystick is active on port 1.
Input -> Analog Stick Mouse hatari_mouse_control_stick Set whether emulated mouse is controlled by left or right analog stick.
Input -> Emulated Mouse Speed hatari_emulated_mouse_speed Set the starting mouse speed from 1 to 6. Default is 2.
Input -> Enable Second Joystick hatari_twojoy Enables a second joystick on port 2, may conflict with mouse.
Input -> Disable Connected Mouse hatari_nomouse Prevents input from your sytem mouse device. Gamepad mouse mode (select) is not disabled.
Input -> Disable Connected Keyboard hatari_nokeys Prevents input from your system keyboard. Virtual keyboard is not disabled.
Video -> Force Refresh Rate. hatari_forcerefresh Force refresh rate to Auto, NTSC 60hz or PAL 50hz. Auto uses selected TOS rate.
Video -> Joy/Mouse Toggle/Speed Msg Location hatari_joymousestatus_display Where to display Joystick/Mouse toggle and speed change information
Video -> Show Drive Activity In Status Info hatari_led_status_display Enable to show activity in Retroarch status display
Media -> Fast Floppy Access hatari_fastfdc Decreases the time spent loading from disk.
Media -> Auto Insert Drive B hatari_autoloadb Auto inserts disk in Drive B if detected.
Use only for content that can use two drives.
M3U loads 2nd entry. Otherwise looks for "b" as last letter before extension.
Media -> Write Protect Floppy Disks hatari_writeprotect_floppy Enable/Disable write protection for floppy disks.
Media -> Write Protect Hard Drives hatari_writeprotect_hd Enable/Disable write protection for hard drives.
RetroPad > Joystick Up hatari_mapper_up Unmapped defaults to joystick up.
RetroPad > Joystick Down hatari_mapper_down Unmapped defaults to joystick down.
RetroPad > Joystick Left hatari_mapper_left Unmapped defaults to joystick left.
RetroPad > Joystick Right hatari_mapper_right Unmapped defaults to joystick right.
RetroPad > A hatari_mapper_a Unmapped defaults to turbo fire/Mouse button 2.
RetroPad > B hatari_mapper_b Unmapped defaults to fire/mouse button 1.
VKBD: Press selected key.
RetroPad > X hatari_mapper_x VKBD: Toggle. Remapping overrides VKBD toggle.
RetroPad > Y hatari_mapper_y VKBD: Toggle 'ShiftLock'. Remapping overrides VKBD function!
RetroPad > Select hatari_mapper_select Unmapped defaults to Joystick/Mouse mode toggle.
RetroPad > Start hatari_mapper_start Unmapped defaults to Enter/Exit the Hatari Settings.
RetroPad > L hatari_mapper_l Unmapped defaults to toggle the Status display.
RetroPad > R hatari_mapper_r Unmapped defaults to switch virtual keyboard page.
RetroPad > L2 hatari_mapper_l2 Unmapped defaults to decrease mouse speed.
RetroPad > R2 hatari_mapper_r2 Unmapped defaults to increase mouse speed.
RetroPad > L3 hatari_mapper_l3 n/a
RetroPad > R3 hatari_mapper_r3 Unmapped defaults to space.
RetroPad > Left Analog > Up hatari_mapper_lu Mouse mode must be off or on right analog.
Ignored if assigned to VKBD.
RetroPad > Left Analog > Down hatari_mapper_ld Mouse mode must be off or on right analog.
Ignored if assigned to VKBD.
RetroPad > Left Analog > Left hatari_mapper_ll Mouse mode must be off or on right analog.
Ignored if assigned to VKBD.
RetroPad > Left Analog > Right hatari_mapper_lr Mouse mode must be off or on right analog.
Ignored if assigned to VKBD.
RetroPad > Right Analog > Up hatari_mapper_ru Mouse mode must be off or on left analog.
RetroPad > Right Analog > Down hatari_mapper_rd Mouse mode must be off or on left analog.
RetroPad > Right Analog > Left hatari_mapper_rl Mouse mode must be off or on left analog.
RetroPad > Right Analog > Right hatari_mapper_rr Mouse mode must be off or on left analog.

Sharp X68000

Setting Key Info
Menu Font Size px68k_menufontsize n/a
CPU Speed px68k_cpuspeed Configure the CPU speed. Can be used to slow down games that run too fast or to speed up floppy loading times.
RAM Size (Restart) px68k_ramsize Sets the amount of RAM to be used by the system.
Use Analog px68k_analog n/a
P1 Joypad Type px68k_joytype1 Set the joypad type for player 1.
P2 Joypad Type px68k_joytype2 Set the joypad type for player 2.
P1 Joystick Select Mapping px68k_joy1_select Assigns a keyboard key to joypad's SELECT button since some games use these keys as the Start or Insert Coin buttons.
ADPCM Volume px68k_adpcm_vol Sets the volume of the ADPCM sound channel.
OPM Volume px68k_opm_vol Sets the volume of the OPM sound channel.
Swap Disks on Drive px68k_disk_drive By default using the native Disk Swap interface within RetroArch's menu will swap the disk in drive FDD1. Change this option to swap disks in drive FDD0.
Save FDD Paths px68k_save_fdd_path When enabled, last loaded fdd path will be saved for each drive and then auto-loaded on startup. When disabled, FDDx starts empty.
Save HDD Paths px68k_save_hdd_path When enabled, last loaded hdd path will be saved for each drive and then auto-loaded on startup. When disabled, HDDx starts empty.
Rumble on FDD Reads px68k_rumble_on_disk_read Produces rumble effect on supported devices when reading from floppy disks.
Joy/Mouse px68k_joy_mouse Select [Mouse] or [Joypad] to control in-game mouse pointer.
VBtn Swap px68k_vbtn_swap Swaps TRIG1 and TRIG2 buttons when a 2-button gamepad is selected.
No Wait Mode px68k_no_wait_mode When set to [enabled], core runs as fast as possible. Can cause audio desync. Setting this [disabled] is recommended.
Push Video before Audio px68k_push_video_before_audio Prioritize reducing video latency over audio latency and/or stuttering.
Adjust Frame Rates px68k_adjust_frame_rates For compatibility with modern displays, slightly adjust frame rates reported to frontend in order to reduce the chances of audio stuttering. Disable to use actual frame rates.
Audio Desync Hack px68k_audio_desync_hack Prevents audio from desynchronizing by simply discarding any audio samples generated past the requested amount per frame slice. Forces 'No Wait Mode' to [enabled], use appropriate frontend settings to properly throttle content.

Microsoft MSX

Setting Key Info
Machine Type (Restart) bluemsx_msxtype n/a
VDP Sync Type (Restart) bluemsx_vdp_synctype n/a
No Sprite Limit bluemsx_nospritelimits n/a
Sound YM2413 Enable (Restart) bluemsx_ym2413_enable n/a
Cart Mapper Type (Restart) bluemsx_cartmapper n/a
Auto Rewind Cassette bluemsx_auto_rewind_cas n/a

Sinclair ZX Spectrum

Setting Key Info
Model (needs content load) fuse_machine n/a
Size Video Border fuse_size_border n/a
Tape Auto Load fuse_auto_load n/a
Tape Fast Load fuse_fast_load n/a
Tape Load Sound fuse_load_sound n/a
Speaker Type fuse_speaker_type n/a
AY Stereo Separation fuse_ay_stereo_separation n/a
Transparent Keyboard Overlay fuse_key_ovrlay_transp n/a
Time to Release Key in ms fuse_key_hold_time n/a
Joypad Left mapping fuse_joypad_left n/a
Joypad Right mapping fuse_joypad_right n/a
Joypad Up mapping fuse_joypad_up n/a
Joypad Down mapping fuse_joypad_down n/a
Joypad Start mapping fuse_joypad_start n/a
Joypad A button mapping fuse_joypad_a n/a
Joypad B button mapping fuse_joypad_b n/a
Joypad X button mapping fuse_joypad_x n/a
Joypad Y button mapping fuse_joypad_y n/a
Joypad L button mapping fuse_joypad_l n/a
Joypad R button mapping fuse_joypad_r n/a
Joypad L2 button mapping fuse_joypad_l2 n/a
Joypad R2 button mapping fuse_joypad_r2 n/a
Joypad L3 button mapping fuse_joypad_l3 n/a
Joypad R3 button mapping fuse_joypad_r3 n/a

IBM PC (MS-DOS)

Setting Key Info
Force 60 FPS Output dosbox_pure_force60fps Enable this to force output at 60FPS. Use this if you encounter screen tearing or vsync issues.
Show Performance Statistics dosbox_pure_perfstats Enable this to show statistics about performance and framerate and check if emulation runs at full speed.
Save States Support dosbox_pure_savestate Make sure to test it in each game before using it. Complex late era DOS games might have problems.
Be aware that states saved with different video, CPU or memory settings are not loadable.
Rewind support comes at a high performance cost and needs at
Loading of dosbox.conf dosbox_pure_conf DOSBox Pure is meant to be configured via core options but optionally supports loading of legacy .conf files.
Use Strict Mode dosbox_pure_strict_mode Disable the command line, running installed operating systems and using .BAT/.COM/.EXE/DOS.YML files from the save game.
Advanced > Start Menu dosbox_pure_menu_time Set the behavior of the start menu before and after launching a game.
You can also force it to open by holding shift or L2/R2 when selecting 'Restart'.
Advanced > Input Latency dosbox_pure_latency By default the core operates in a high performance mode with good input latency.
There is a special mode available which minimizes input latency further requiring manual tweaking.
Advanced > Low latency CPU usage dosbox_pure_auto_target In low latency mode when emulating DOS as fast as possible, how much time per frame should be used by the emulation.
If the video is stuttering, lower this or improve render performance in the frontend (for example by disabling vsync or video proces
Enable On Screen Keyboard dosbox_pure_on_screen_keyboard Enable the On Screen Keyboard feature which can be activated with the L3 button on the controller.
Mouse Input Mode dosbox_pure_mouse_input You can disable input handling from a mouse or a touchscreen (emulated mouse through joypad will still work).
In touchpad mode use drag to move, tap to click, two finger tap to right-click and press-and-hold to drag
Bind Mouse Wheel To Key dosbox_pure_mouse_wheel Bind mouse wheel up and down to two keyboard keys to be able to use it in DOS games.
Mouse Sensitivity dosbox_pure_mouse_speed_factor Sets the overall mouse cursor movement speed.
Advanced > Horizontal Mouse Sensitivity. dosbox_pure_mouse_speed_factor_x Experiment with this value if the mouse is too fast/slow when moving left/right.
Advanced > Automatic Game Pad Mappings dosbox_pure_auto_mapping DOSBox Pure can automatically apply a gamepad control mapping scheme when it detects a game.
These button mappings are provided by the Keyb2Joypad Project (by Jemy Murphy and bigjim).
Advanced > Keyboard Layout dosbox_pure_keyboard_layout Select the keyboard layout (will not change the On Screen Keyboard).
Advanced > Menu Transparency dosbox_pure_menu_transparency Set the transparency level of the On Screen Keyboard and the Gamepad Mapper.
Advanced > Joystick Analog Deadzone dosbox_pure_joystick_analog_deadzone Set the deadzone of the joystick analog sticks. May be used to eliminate drift caused by poorly calibrated joystick hardware.
Advanced > Enable Joystick Timed Intervals dosbox_pure_joystick_timed Enable timed intervals for joystick axes. Experiment with this option if your joystick drifts.
Emulated Performance dosbox_pure_cycles The raw performance that DOSBox will try to emulate.
Detailed > Performance Scale dosbox_pure_cycles_scale Fine tune the emulated performance for specific needs.
Detailed > Limit CPU Usage dosbox_pure_cycle_limit When emulating DOS as fast as possible, how much time per frame should be used by the emulation.
Lower this if your device becomes hot while using this core.
Emulated Graphics Chip (restart required) dosbox_pure_machine The type of graphics chip that DOSBox will emulate.
CGA Mode dosbox_pure_cga The CGA variation that is being emulated.
Hercules Color Mode dosbox_pure_hercules The color scheme for Hercules emulation.
SVGA Mode (restart required) dosbox_pure_svga The SVGA variation that is being emulated. Try changing this if you encounter graphical glitches.
SVGA Memory (restart required) dosbox_pure_svgamem The amount of memory available to the emulated SVGA card.
3dfx Voodoo Emulation dosbox_pure_voodoo Enables certain games with support for the Voodoo 3D accelerator.
3dfx Voodoo Graphics SST-1/2 emulator by Aaron Giles and the MAME team (license: BSD-3-Clause)
3dfx Voodoo Performance Settings dosbox_pure_voodoo_perf Options to tweak the behavior of the 3dfx Voodoo emulation.
Memory Size (restart required) dosbox_pure_memory_size The amount of (high) memory that the emulated machine has. You can also disable extended memory (EMS/XMS).
Using more than the default is not recommended, due to incompatibility with certain games and applications.
Modem Type dosbox_pure_modem Type of emulated modem on COM1 for netplay. With the dial-up modem, one side needs to dial any number to connect.
CPU Type (restart required) dosbox_pure_cpu_type Emulated CPU type. Auto is the fastest choice.
Games that require specific CPU type selection:
- 386 (prefetch): X-Men: Madness in The Murderworld, Terminator 1, Contra, Fifa International Soccer 1994
- 486 (slow): Betrayal in Antara
- Pentium (slow): Fif
Advanced > CPU Core dosbox_pure_cpu_core Emulation method (DOSBox CPU core) used.
Advanced > OS Disk Modifications (restart required) dosbox_pure_bootos_ramdisk When running an installed operating system, modifications to the C: drive will be made on the disk image by default.
Setting it to 'Discard' allows the content to be closed any time without worry of file system or registry corruption.
When using 'Sa
Advanced > Free Space on D: in OS (restart required) dosbox_pure_bootos_dfreespace Controls the amount of free space available on the D: drive when running an installed operating system.
If the total size of the D: drive (data + free space) exceeds 2 GB, it can't be used in earlier versions of Windows 95.
WARNING: Created save fil
Advanced > Force Normal Core in OS dosbox_pure_bootos_forcenormal The normal core can be more stable when running an installed operating system.
This can be toggled on and off to navigate around crashes.
Audio Sample Rate (restart required) dosbox_pure_audiorate This should match the frontend audio output rate (Hz) setting.
SoundBlaster Settings dosbox_pure_sblaster_conf Set the address, interrupt, low 8-bit and high 16-bit DMA.
MIDI Output dosbox_pure_midi Select the .SF2 SoundFont file, .ROM file or interface used for MIDI output.
To add SoundFonts or ROM files, copy them into the 'system' directory of the frontend.
To use the frontend MIDI driver, make sure it's set up correctly.
Advanced > SoundBlaster Type dosbox_pure_sblaster_type Type of emulated SoundBlaster card.
Advanced > SoundBlaster Adlib/FM Mode dosbox_pure_sblaster_adlib_mode The SoundBlaster emulated FM synth mode. All modes are Adlib compatible except CMS.
Advanced > SoundBlaster Adlib Provider dosbox_pure_sblaster_adlib_emu Provider for the Adlib emulation. Default has good quality and low performance requirements.
Advanced > Enable Gravis Ultrasound (restart required) dosbox_pure_gus Enable Gravis Ultrasound emulation. Settings are fixed at port 0x240, IRQ 5, DMA 3.
If the ULTRADIR variable needs to be different than the default 'C:\ULTRASND' you need to issue 'SET ULTRADIR=...' in the command line or in a batch file.
Advanced > Swap Stereo Channels dosbox_pure_swapstereo Swap the left and the right audio channel.

ScummVM

Setting Key Info
Auto performance tuner scummvm_auto_performance_tuner In-game automatic change of timing/frameskip settings if low performances are detected. Timing/frameskip settings will be changed in sequence, if audio buffer underruns are detected and for the current game session only, and restored in sequence if
Cursor > Exclusive cursor control with RetroPad scummvm_gamepad_cursor_only Allows the use of RetroPad only to control mouse cursor, excluding the other inputs (e.g. physical mouse, touch screen).
Cursor > Gamepad Cursor Speed scummvm_gamepad_cursor_speed Sets the mouse cursor speed multiplier when moving the cursor with the RetroPad left analog stick or D-Pad. The default value of '1.0' is optimised for games that have a native resolution of '320x200' or '320x240'. When running 'high definition' gam
Cursor > Gamepad Cursor Acceleration scummvm_gamepad_cursor_acceleration_time The amount of time (In seconds) it takes for the cursor to reach full speed
Cursor > Analog Cursor Response scummvm_analog_response Determines how the speed of the cursor varies when tilting the RetroPad left analog stick. 'Linear': Speed is directly proportional to analog stick displacement. This is standard behaviour with which most users will be familiar. 'Quadratic': Speed i
Cursor > Analog Deadzone scummvm_analog_deadzone Sets the deadzone in percentage of the RetroPad analog sticks. Used to eliminate cursor drift/unwanted input.
Cursor > Mouse Speed scummvm_mouse_speed Sets the mouse cursor speed multiplier when moving the cursor with the RetroMouse.
Cursor > Mouse Fine Control Speed Reduction scummvm_mouse_fine_control_speed_reduction Sets the mouse cursor speed reduction as percentage of normal speed when fine control is activated.
Timing > Allow Timing Inaccuracies scummvm_allow_timing_inaccuracies Allow timing inaccuracies that reduces CPU requirements. Though most timing deviations are imperceptible, in some cases it may introduce audio sync/timing issues, hence this option should be enabled only if full speed cannot be reached otherwise.
Timing > Frame rate cap scummvm_framerate Set core frame rate upper limit. Changing this setting will reset the core.
Timing > Sample rate scummvm_samplerate Set core sample rate. Changing this setting will reset the core.
RetroPad > Up scummvm_mapper_up n/a
RetroPad > Down scummvm_mapper_down n/a
RetroPad > Left scummvm_mapper_left n/a
RetroPad > Right scummvm_mapper_right n/a
RetroPad > A scummvm_mapper_a n/a
RetroPad > B scummvm_mapper_b n/a
RetroPad > X scummvm_mapper_x n/a
RetroPad > Y scummvm_mapper_y n/a
RetroPad > Select scummvm_mapper_select n/a
RetroPad > Start scummvm_mapper_start n/a
RetroPad > L scummvm_mapper_l n/a
RetroPad > R scummvm_mapper_r n/a
RetroPad > L2 scummvm_mapper_l2 n/a
RetroPad > R2 scummvm_mapper_r2 n/a
RetroPad > L3 scummvm_mapper_l3 n/a
RetroPad > R3 scummvm_mapper_r3 n/a
RetroPad > Left Analog > Up scummvm_mapper_lu n/a
RetroPad > Left Analog > Down scummvm_mapper_ld n/a
RetroPad > Left Analog > Left scummvm_mapper_ll n/a
RetroPad > Left Analog > Right scummvm_mapper_lr n/a
RetroPad > Right Analog > Up scummvm_mapper_ru n/a
RetroPad > Right Analog > Down scummvm_mapper_rd n/a
RetroPad > Right Analog > Left scummvm_mapper_rl n/a
RetroPad > Right Analog > Right scummvm_mapper_rr n/a

Alpha Player

Setting Key Info
Resolution (restart) mplayer_video_resolution n/a
Hardware Decoder (restart) mplayer_hw_decoder n/a
Loop mplayer_loop_content n/a
Software Decoder Threads (restart) mplayer_sw_decoder_threads n/a
Colorspace mplayer_color_space n/a
Visualizer Resolution mplayer_fft_resolution n/a