System Settings

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