Mednafen Sony PlayStation Documentation

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# Sony PlayStation Documentation

Last updated August 3, 2014
Valid as of 0.9.36.3

Table of Contents:

- Introduction
- Firmware/BIOS
- Analog Sticks Range Issues
- Multitap Usage
- Settings Reference

## Introduction

PlayStation 1 emulation is currently in a state of development. Save states, rewinding, and netplay are not available by default.

A dual-core Phenom II or Athlon II at 3GHz or higher, or rough equivalent(in terms of single-core IPC), is recommended for running Mednafen's PlayStation 1 emulation on. For better performance, the binary should be compiled for a 64-bit target(for example, x86_64) rather than 32-bit, if available.

Enabling CD image preloading into memory via the cd.image_memcache setting is recommended, to avoid short emulator pauses and audio pops due to waiting for disk accesses to complete when the emulated CD is accessed.

PSF1 playback is supported.

## Firmware/BIOS

Place the correct BIOS image files in the correct location. DO NOT rename other revisions/regions of the BIOS to match the expected filenames, or you'll likely cause emulation glitches.

The filenames listed below are per default psx.bios_* settings.

Filename: | Purpose:
--- | ---
scph5500.bin | SCPH-5500 BIOS image. Required for Japan-region games.
scph5501.bin | SCPH-5501 BIOS image. Required for North America/US-region games. Reportedly the same as the SCPH-7003 BIOS image.
scph5502.bin | SCPH-5502 BIOS image. Required for Europe-region games.

## Analog Sticks Range Issues

The DualShock and Dual Analog controllers' analog sticks have a circular physical range of movement, but a much more squareish(corners are a bit rounded for DualShock) logical range, likely due to conservative calibration in the gamepads' hardware and firmware design. Modern PC(compatible) gamepads with a circular physical range of motion for their analog sticks(e.g. XBox 360 type controllers) tend to be more tightly-calibrated in hardware, and thus their logical range of motion will be closer to circles than squares. This can cause problems with movement in some PS1 games(e.g. "Mega Man Legends 2") that care not for proper trigonometry, as they are expecting larger values at ordinal angles of the sticks than the aforementioned type of PC gamepad can provide due to its design.

An "axis_scale" setting(named like "psx.input.port1.dualshock.axis_scale") is provided for each possible emulated DualShock and Dual Analog controller on each port. To work around this range issue with DualShock emulation, an "axis_scale" setting of "1.33" is recommended as a starting point. Smaller values(such as "1.20") may be sufficient and provide for more precise control, so try experimenting to find the ideal for your combination of gamepad and games.

## Multitap Usage

By default, no multitap is enabled. Be aware that if you enable multitap on PSX port 1, game view mapping will be inconsistent between games that support multitap and those that do not.

Enabling multitap on either PSX port may cause slight game slowdown. Some 1-and-2-player-only games half-support the multitap, but are apparently not coded with the multitap in mind, and may suffer from graphical glitches like screen tearing if multitap is enabled when running them.

(Virtual) Port Index to Game View Mappings for Multitap only on PSX Port 1
Port Index: | Multitap-Compatible-Game: | Multitap-Incompatible-Game: | Physical Port Name:
--- | --- | --- | ---
1 | 1 | 1 | 1A
2 | 2 | - | 1B
3 | 3 | - | 1C
4 | 4 | - | 1D
5 | 5 | 2 | 2
6 | - | - | -
7 | - | - | -
8 | - | - | -

(Virtual) Port Index to Game View Mappings for Multitap only on PSX Port 2
Port Index: | Multitap-Compatible-Game: | Multitap-Incompatible-Game: | Physical Port Name:
--- | --- | --- | ---
1 | 1 | 1 | 1
2 | 2 | 2 | 2A
3 | 3 | - | 2B
4 | 4 | - | 2C
5 | 5 | - | 2D
6 | - | - | -
7 | - | - | -
8 | - | - | -

(Virtual) Port Index to Game View Mappings for Multitap on both PSX Ports
Port Index: | Multitap-Compatible-Game: | Multitap-Incompatible-Game: | Physical Port Name:
--- | --- | --- | ---
1 | 1 | 1 | 1A
2 | 2 | - | 1B
3 | 3 | - | 1C
4 | 4 | - | 1D
5 | 5 | 2 | 2A
6 | 6 | - | 2B
7 | 7 | - | 2C
8 | 8 | - | 2D

## Settings Reference

Caution: Any settings that change emulation behavior as seen from the emulated game are shown with the setting name bolded in the table. One should be conscious of these settings if one has changed them from the default values when using network play or movies, as they can cause desychronizations if not set the same among hosts(or between the recording emulator and the playing emulator).

Setting: | Value Type: | Possible Values: | Default Value: | Description:
--- | --- | --- | --- | ---
psx.bios_eu | string |  | scph5502.bin | Path to the Europe SCPH-5502 ROM BIOS
psx.bios_jp | string |  | scph5500.bin | Path to the Japan SCPH-5500 ROM BIOS
psx.bios_na | string |  | scph5501.bin | Path to the North America SCPH-5501 ROM BIOS SHA1 0555c6fae8906f3f09baf5988f00e55f88e9f30b
psx.clobbers_lament | boolean | 0 1 | 0 | Enable experimental save state functionality. Save states will destroy your saved game/memory card data if you're careless, and that will make clobber sad. Poor clobber.
psx.dbg_level | integer | 0 through 4 | 0 | Debug printf verbosity level.
psx.input.analog_mode_ct | boolean | 0 1 | 0 | Enable analog mode combo-button alternate toggle. When enabled, instead of the configured Analog mode toggle button for the emulated DualShock, use a combination of buttons to toggle it instead. When Select, Start, and all four shoulder buttons are held down for about 1 second, the mode will toggle.
psx.input.mouse_sensitivity | real | through | 1.00 | Emulated mouse sensitivity.
psx.input.port1 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad | gamepad | Input device for Virtual Port 1 none - none gamepad - Digital Gamepad PlayStation digital gamepad; SCPH-1080. dualshock - DualShock DualShock gamepad; SCPH-1200. Emulation in Mednafen includes the analog mode toggle button. Rumble is emulated, but currently only supported on Linux, and MS Windows via the XInput API and XInput-compatible gamepads/joysticks. If you're having trouble getting rumble to work on Linux, see if Mednafen is printing out error messages during startup regarding /dev/input/event*, and resolve the issue(s) as necessary. dualanalog - Dual Analog Dual Analog gamepad; SCPH-1180. It is the predecessor/prototype to the more advanced DualShock. Emulated in Mednafen as forced to analog mode, and without rumble. analogjoy - Analog Joystick Flight-game-oriented dual-joystick controller; SCPH-1110. Emulated in Mednafen as forced to analog mode. mouse - Mouse negcon - neGcon Namco's unconventional twisty racing-game-oriented gamepad; NPC-101. guncon - GunCon Namco's light gun; NPC-103. justifier - Konami Justifier Konami's light gun; SLUH-00017. Rumored to be wrought of the coagulated rage of all who tried to shoot The Dog. If the game you want to play supports the "GunCon", you should use that instead. NOTE: Currently does not work properly when on any of ports 1B-1D and 2B-2D. dancepad - Dance Pad Dingo Dingo Rodeo!
psx.input.port1.analogjoy.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Analog Joystick on Virtual Port 1.
psx.input.port1.dualanalog.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Dual Analog on Virtual Port 1.
psx.input.port1.dualshock.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for DualShock on Virtual Port 1.
psx.input.port1.gun_chairs | integer | 0x000000 through 0x1000000 | 0xFF0000 | Crosshairs color for lightgun on virtual port 1. A value of 0x1000000 disables crosshair drawing.
psx.input.port1.memcard | boolean | 0 1 | 1 | Emulate memcard on virtual port 1.
psx.input.port2 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad | gamepad | Input device for Virtual Port 2 none - none gamepad - Digital Gamepad PlayStation digital gamepad; SCPH-1080. dualshock - DualShock DualShock gamepad; SCPH-1200. Emulation in Mednafen includes the analog mode toggle button. Rumble is emulated, but currently only supported on Linux, and MS Windows via the XInput API and XInput-compatible gamepads/joysticks. If you're having trouble getting rumble to work on Linux, see if Mednafen is printing out error messages during startup regarding /dev/input/event*, and resolve the issue(s) as necessary. dualanalog - Dual Analog Dual Analog gamepad; SCPH-1180. It is the predecessor/prototype to the more advanced DualShock. Emulated in Mednafen as forced to analog mode, and without rumble. analogjoy - Analog Joystick Flight-game-oriented dual-joystick controller; SCPH-1110. Emulated in Mednafen as forced to analog mode. mouse - Mouse negcon - neGcon Namco's unconventional twisty racing-game-oriented gamepad; NPC-101. guncon - GunCon Namco's light gun; NPC-103. justifier - Konami Justifier Konami's light gun; SLUH-00017. Rumored to be wrought of the coagulated rage of all who tried to shoot The Dog. If the game you want to play supports the "GunCon", you should use that instead. NOTE: Currently does not work properly when on any of ports 1B-1D and 2B-2D. dancepad - Dance Pad Dingo Dingo Rodeo!
psx.input.port2.analogjoy.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Analog Joystick on Virtual Port 2.
psx.input.port2.dualanalog.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Dual Analog on Virtual Port 2.
psx.input.port2.dualshock.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for DualShock on Virtual Port 2.
psx.input.port2.gun_chairs | integer | 0x000000 through 0x1000000 | 0x00FF00 | Crosshairs color for lightgun on virtual port 2. A value of 0x1000000 disables crosshair drawing.
psx.input.port2.memcard | boolean | 0 1 | 1 | Emulate memcard on virtual port 2.
psx.input.port3 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad | gamepad | Input device for Virtual Port 3 none - none gamepad - Digital Gamepad PlayStation digital gamepad; SCPH-1080. dualshock - DualShock DualShock gamepad; SCPH-1200. Emulation in Mednafen includes the analog mode toggle button. Rumble is emulated, but currently only supported on Linux, and MS Windows via the XInput API and XInput-compatible gamepads/joysticks. If you're having trouble getting rumble to work on Linux, see if Mednafen is printing out error messages during startup regarding /dev/input/event*, and resolve the issue(s) as necessary. dualanalog - Dual Analog Dual Analog gamepad; SCPH-1180. It is the predecessor/prototype to the more advanced DualShock. Emulated in Mednafen as forced to analog mode, and without rumble. analogjoy - Analog Joystick Flight-game-oriented dual-joystick controller; SCPH-1110. Emulated in Mednafen as forced to analog mode. mouse - Mouse negcon - neGcon Namco's unconventional twisty racing-game-oriented gamepad; NPC-101. guncon - GunCon Namco's light gun; NPC-103. justifier - Konami Justifier Konami's light gun; SLUH-00017. Rumored to be wrought of the coagulated rage of all who tried to shoot The Dog. If the game you want to play supports the "GunCon", you should use that instead. NOTE: Currently does not work properly when on any of ports 1B-1D and 2B-2D. dancepad - Dance Pad Dingo Dingo Rodeo!
psx.input.port3.analogjoy.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Analog Joystick on Virtual Port 3.
psx.input.port3.dualanalog.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Dual Analog on Virtual Port 3.
psx.input.port3.dualshock.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for DualShock on Virtual Port 3.
psx.input.port3.gun_chairs | integer | 0x000000 through 0x1000000 | 0xFF00FF | Crosshairs color for lightgun on virtual port 3. A value of 0x1000000 disables crosshair drawing.
psx.input.port3.memcard | boolean | 0 1 | 1 | Emulate memcard on virtual port 3.
psx.input.port4 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad | gamepad | Input device for Virtual Port 4 none - none gamepad - Digital Gamepad PlayStation digital gamepad; SCPH-1080. dualshock - DualShock DualShock gamepad; SCPH-1200. Emulation in Mednafen includes the analog mode toggle button. Rumble is emulated, but currently only supported on Linux, and MS Windows via the XInput API and XInput-compatible gamepads/joysticks. If you're having trouble getting rumble to work on Linux, see if Mednafen is printing out error messages during startup regarding /dev/input/event*, and resolve the issue(s) as necessary. dualanalog - Dual Analog Dual Analog gamepad; SCPH-1180. It is the predecessor/prototype to the more advanced DualShock. Emulated in Mednafen as forced to analog mode, and without rumble. analogjoy - Analog Joystick Flight-game-oriented dual-joystick controller; SCPH-1110. Emulated in Mednafen as forced to analog mode. mouse - Mouse negcon - neGcon Namco's unconventional twisty racing-game-oriented gamepad; NPC-101. guncon - GunCon Namco's light gun; NPC-103. justifier - Konami Justifier Konami's light gun; SLUH-00017. Rumored to be wrought of the coagulated rage of all who tried to shoot The Dog. If the game you want to play supports the "GunCon", you should use that instead. NOTE: Currently does not work properly when on any of ports 1B-1D and 2B-2D. dancepad - Dance Pad Dingo Dingo Rodeo!
psx.input.port4.analogjoy.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Analog Joystick on Virtual Port 4.
psx.input.port4.dualanalog.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Dual Analog on Virtual Port 4.
psx.input.port4.dualshock.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for DualShock on Virtual Port 4.
psx.input.port4.gun_chairs | integer | 0x000000 through 0x1000000 | 0xFF8000 | Crosshairs color for lightgun on virtual port 4. A value of 0x1000000 disables crosshair drawing.
psx.input.port4.memcard | boolean | 0 1 | 1 | Emulate memcard on virtual port 4.
psx.input.port5 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad | gamepad | Input device for Virtual Port 5 none - none gamepad - Digital Gamepad PlayStation digital gamepad; SCPH-1080. dualshock - DualShock DualShock gamepad; SCPH-1200. Emulation in Mednafen includes the analog mode toggle button. Rumble is emulated, but currently only supported on Linux, and MS Windows via the XInput API and XInput-compatible gamepads/joysticks. If you're having trouble getting rumble to work on Linux, see if Mednafen is printing out error messages during startup regarding /dev/input/event*, and resolve the issue(s) as necessary. dualanalog - Dual Analog Dual Analog gamepad; SCPH-1180. It is the predecessor/prototype to the more advanced DualShock. Emulated in Mednafen as forced to analog mode, and without rumble. analogjoy - Analog Joystick Flight-game-oriented dual-joystick controller; SCPH-1110. Emulated in Mednafen as forced to analog mode. mouse - Mouse negcon - neGcon Namco's unconventional twisty racing-game-oriented gamepad; NPC-101. guncon - GunCon Namco's light gun; NPC-103. justifier - Konami Justifier Konami's light gun; SLUH-00017. Rumored to be wrought of the coagulated rage of all who tried to shoot The Dog. If the game you want to play supports the "GunCon", you should use that instead. NOTE: Currently does not work properly when on any of ports 1B-1D and 2B-2D. dancepad - Dance Pad Dingo Dingo Rodeo!
psx.input.port5.analogjoy.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Analog Joystick on Virtual Port 5.
psx.input.port5.dualanalog.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Dual Analog on Virtual Port 5.
psx.input.port5.dualshock.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for DualShock on Virtual Port 5.
psx.input.port5.gun_chairs | integer | 0x000000 through 0x1000000 | 0xFFFF00 | Crosshairs color for lightgun on virtual port 5. A value of 0x1000000 disables crosshair drawing.
psx.input.port5.memcard | boolean | 0 1 | 1 | Emulate memcard on virtual port 5.
psx.input.port6 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad | gamepad | Input device for Virtual Port 6 none - none gamepad - Digital Gamepad PlayStation digital gamepad; SCPH-1080. dualshock - DualShock DualShock gamepad; SCPH-1200. Emulation in Mednafen includes the analog mode toggle button. Rumble is emulated, but currently only supported on Linux, and MS Windows via the XInput API and XInput-compatible gamepads/joysticks. If you're having trouble getting rumble to work on Linux, see if Mednafen is printing out error messages during startup regarding /dev/input/event*, and resolve the issue(s) as necessary. dualanalog - Dual Analog Dual Analog gamepad; SCPH-1180. It is the predecessor/prototype to the more advanced DualShock. Emulated in Mednafen as forced to analog mode, and without rumble. analogjoy - Analog Joystick Flight-game-oriented dual-joystick controller; SCPH-1110. Emulated in Mednafen as forced to analog mode. mouse - Mouse negcon - neGcon Namco's unconventional twisty racing-game-oriented gamepad; NPC-101. guncon - GunCon Namco's light gun; NPC-103. justifier - Konami Justifier Konami's light gun; SLUH-00017. Rumored to be wrought of the coagulated rage of all who tried to shoot The Dog. If the game you want to play supports the "GunCon", you should use that instead. NOTE: Currently does not work properly when on any of ports 1B-1D and 2B-2D. dancepad - Dance Pad Dingo Dingo Rodeo!
psx.input.port6.analogjoy.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Analog Joystick on Virtual Port 6.
psx.input.port6.dualanalog.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Dual Analog on Virtual Port 6.
psx.input.port6.dualshock.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for DualShock on Virtual Port 6.
psx.input.port6.gun_chairs | integer | 0x000000 through 0x1000000 | 0x00FFFF | Crosshairs color for lightgun on virtual port 6. A value of 0x1000000 disables crosshair drawing.
psx.input.port6.memcard | boolean | 0 1 | 1 | Emulate memcard on virtual port 6.
psx.input.port7 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad | gamepad | Input device for Virtual Port 7 none - none gamepad - Digital Gamepad PlayStation digital gamepad; SCPH-1080. dualshock - DualShock DualShock gamepad; SCPH-1200. Emulation in Mednafen includes the analog mode toggle button. Rumble is emulated, but currently only supported on Linux, and MS Windows via the XInput API and XInput-compatible gamepads/joysticks. If you're having trouble getting rumble to work on Linux, see if Mednafen is printing out error messages during startup regarding /dev/input/event*, and resolve the issue(s) as necessary. dualanalog - Dual Analog Dual Analog gamepad; SCPH-1180. It is the predecessor/prototype to the more advanced DualShock. Emulated in Mednafen as forced to analog mode, and without rumble. analogjoy - Analog Joystick Flight-game-oriented dual-joystick controller; SCPH-1110. Emulated in Mednafen as forced to analog mode. mouse - Mouse negcon - neGcon Namco's unconventional twisty racing-game-oriented gamepad; NPC-101. guncon - GunCon Namco's light gun; NPC-103. justifier - Konami Justifier Konami's light gun; SLUH-00017. Rumored to be wrought of the coagulated rage of all who tried to shoot The Dog. If the game you want to play supports the "GunCon", you should use that instead. NOTE: Currently does not work properly when on any of ports 1B-1D and 2B-2D. dancepad - Dance Pad Dingo Dingo Rodeo!
psx.input.port7.analogjoy.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Analog Joystick on Virtual Port 7.
psx.input.port7.dualanalog.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Dual Analog on Virtual Port 7.
psx.input.port7.dualshock.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for DualShock on Virtual Port 7.
psx.input.port7.gun_chairs | integer | 0x000000 through 0x1000000 | 0x0080FF | Crosshairs color for lightgun on virtual port 7. A value of 0x1000000 disables crosshair drawing.
psx.input.port7.memcard | boolean | 0 1 | 1 | Emulate memcard on virtual port 7.
psx.input.port8 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad | gamepad | Input device for Virtual Port 8 none - none gamepad - Digital Gamepad PlayStation digital gamepad; SCPH-1080. dualshock - DualShock DualShock gamepad; SCPH-1200. Emulation in Mednafen includes the analog mode toggle button. Rumble is emulated, but currently only supported on Linux, and MS Windows via the XInput API and XInput-compatible gamepads/joysticks. If you're having trouble getting rumble to work on Linux, see if Mednafen is printing out error messages during startup regarding /dev/input/event*, and resolve the issue(s) as necessary. dualanalog - Dual Analog Dual Analog gamepad; SCPH-1180. It is the predecessor/prototype to the more advanced DualShock. Emulated in Mednafen as forced to analog mode, and without rumble. analogjoy - Analog Joystick Flight-game-oriented dual-joystick controller; SCPH-1110. Emulated in Mednafen as forced to analog mode. mouse - Mouse negcon - neGcon Namco's unconventional twisty racing-game-oriented gamepad; NPC-101. guncon - GunCon Namco's light gun; NPC-103. justifier - Konami Justifier Konami's light gun; SLUH-00017. Rumored to be wrought of the coagulated rage of all who tried to shoot The Dog. If the game you want to play supports the "GunCon", you should use that instead. NOTE: Currently does not work properly when on any of ports 1B-1D and 2B-2D. dancepad - Dance Pad Dingo Dingo Rodeo!
psx.input.port8.analogjoy.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Analog Joystick on Virtual Port 8.
psx.input.port8.dualanalog.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for Dual Analog on Virtual Port 8.
psx.input.port8.dualshock.axis_scale | real | 1.00 through 1.50 | 1.00 | Analog axis scale coefficient for DualShock on Virtual Port 8.
psx.input.port8.gun_chairs | integer | 0x000000 through 0x1000000 | 0x8000FF | Crosshairs color for lightgun on virtual port 8. A value of 0x1000000 disables crosshair drawing.
psx.input.port8.memcard | boolean | 0 1 | 1 | Emulate memcard on virtual port 8.
psx.input.pport1.multitap | boolean | 0 1 | 0 | Enable multitap on PSX port 1. Makes 3 more virtual ports available. NOTE: Enabling multitap in games that don't fully support it may cause deleterious effects.
psx.input.pport2.multitap | boolean | 0 1 | 0 | Enable multitap on PSX port 2. Makes 3 more virtual ports available. NOTE: Enabling multitap in games that don't fully support it may cause deleterious effects.
psx.region_autodetect | boolean | 0 1 | 1 | Attempt to auto-detect region of game.
psx.region_default | enum | jp na eu | jp | Default region to use. Used if region autodetection fails or is disabled. jp - Japan na - North America eu - Europe
psx.slend | integer | 0 through 239 | 239 | Last displayed scanline in NTSC mode.
psx.slendp | integer | 0 through 287 | 287 | Last displayed scanline in PAL mode.
psx.slstart | integer | 0 through 239 | 0 | First displayed scanline in NTSC mode.
psx.slstartp | integer | 0 through 287 | 0 | First displayed scanline in PAL mode.
psx.spu.resamp_quality | integer | 0 through 10 | 5 | SPU output resampler quality. 0 is lowest quality and CPU usage, 10 is highest quality and CPU usage. The resampler that this setting refers to is used for converting from 44.1KHz to the sampling rate of the host audio device Mednafen is using. Changing Mednafen's output rate, via the "sound.rate" setting, to "44100" may bypass the resampler, which can decrease CPU usage by Mednafen, and can increase or decrease audio quality, depending on various operating system and hardware factors.

Setting: | Value Type: | Possible Values: | Default Value: | Description:
--- | --- | --- | --- | ---
psx.debugger.disfontsize | enum | xsmall small medium large | small | Disassembly font size. Note: Setting the font size to larger than the default may cause text overlap in the debugger. xsmall - 4x5 small - 5x7 medium - 6x13 large - 9x18
psx.debugger.memcharenc | string |  | shift_jis | Character encoding for the debugger's memory editor.
psx.enable | boolean | 0 1 | 1 | Enable (automatic) usage of this module.
psx.forcemono | boolean | 0 1 | 0 | Force monophonic sound output.
psx.pixshader | enum | none autoip autoipsharper scale2x sabr ipsharper ipxnoty ipynotx ipxnotysharper ipynotxsharper | none | Enable specified OpenGL pixel shader. Obviously, this will only work with the OpenGL "video.driver" setting, and only on cards and OpenGL implementations that support pixel shaders, otherwise you will get a black screen, or Mednafen may display an error message when starting up. Bilinear interpolation is disabled with pixel shaders, and any interpolation, if present, will be noted in the description of each pixel shader. none - None/Disabled autoip - Auto Interpolation Will automatically interpolate on each axis if the corresponding effective scaling factor is not an integer. autoipsharper - Sharper Auto Interpolation Same as "autoip", but when interpolation is done, it is done in a manner that will reduce blurriness if possible. scale2x - Scale2x sabr - SABR v3.0 GPU-intensive. ipsharper - Sharper bilinear interpolation. ipxnoty - Linear interpolation on X axis only. ipynotx - Linear interpolation on Y axis only. ipxnotysharper - Sharper version of "ipxnoty". ipynotxsharper - Sharper version of "ipynotx".
psx.scanlines | integer | -100 through 100 | 0 | Enable scanlines with specified opacity. Opacity is specified in %; IE a value of "100" will give entirely black scanlines. Negative values are the same as positive values for non-interlaced video, but for interlaced video will cause the scanlines to be overlaid over the previous field's lines(only if the video.deinterlacer setting is set to "weave", the default).
psx.special | enum | none hq2x hq3x hq4x scale2x scale3x scale4x 2xsai super2xsai supereagle nn2x nn3x nn4x nny2x nny3x nny4x | none | Enable specified special video scaler. The destination rectangle is NOT altered by this setting, so if you have xscale and yscale set to "2", and try to use a 3x scaling filter like hq3x, the image is not going to look that great. The nearest-neighbor scalers are intended for use with bilinear interpolation enabled, at high resolutions(such as 1280x1024; nn2x(or nny2x) + bilinear interpolation + fullscreen stretching at this resolution looks quite nice). none - None/Disabled hq2x - hq2x hq3x - hq3x hq4x - hq4x scale2x - scale2x scale3x - scale3x scale4x - scale4x 2xsai - 2xSaI super2xsai - Super 2xSaI supereagle - Super Eagle nn2x - Nearest-neighbor 2x nn3x - Nearest-neighbor 3x nn4x - Nearest-neighbor 4x nny2x - Nearest-neighbor 2x, y axis only nny3x - Nearest-neighbor 3x, y axis only nny4x - Nearest-neighbor 4x, y axis only
psx.stretch | enum | 0 full aspect aspect_int aspect_mult2 | aspect_mult2 | Stretch to fill screen. 0 - Disabled full - Full Full-screen stretch, disregarding aspect ratio. aspect - Aspect Preserve Full-screen stretch as far as the aspect ratio(in this sense, the equivalent xscalefs == yscalefs) can be maintained. aspect_int - Aspect Preserve + Integer Scale Full-screen stretch, same as "aspect" except that the equivalent xscalefs and yscalefs are rounded down to the nearest integer. aspect_mult2 - Aspect Preserve + Integer Multiple-of-2 Scale Full-screen stretch, same as "aspect_int", but rounds down to the nearest multiple of 2.
psx.tblur | boolean | 0 1 | 0 | Enable video temporal blur(50/50 previous/current frame by default).
psx.tblur.accum | boolean | 0 1 | 0 | Accumulate color data rather than discarding it.
psx.tblur.accum.amount | real | 0 through 100 | 50 | Blur amount in accumulation mode, specified in percentage of accumulation buffer to mix with the current frame.
psx.videoip | enum | 0 1 x y | 1 | Enable (bi)linear interpolation. 0 - Disabled 1 - Bilinear x - Linear (X) Interpolation only on the X axis. y - Linear (Y) Interpolation only on the Y axis.
psx.xres | integer | 0 through 65536 | 0 | Full-screen horizontal resolution. A value of "0" will cause the desktop horizontal resolution to be used.
psx.xscale | real | 0.01 through 256 | 3.000000 | Scaling factor for the X axis in windowed mode.
psx.xscalefs | real | 0.01 through 256 | 1.000000 | Scaling factor for the X axis in fullscreen mode. For this settings to have any effect, the ".stretch" setting must be set to "0".
psx.yres | integer | 0 through 65536 | 0 | Full-screen vertical resolution. A value of "0" will cause the desktop vertical resolution to be used.
psx.yscale | real | 0.01 through 256 | 3.000000 | Scaling factor for the Y axis in windowed mode.
psx.yscalefs | real | 0.01 through 256 | 1.000000 | Scaling factor for the Y axis in fullscreen mode. For this settings to have any effect, the ".stretch" setting must be set to "0".