Mednafen Sony PlayStation Documentation

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# Sony PlayStation Documentation

Last updated March 19, 2024
Valid as of 1.32.1

Table of Contents:

- Introduction
- Firmware/BIOS
- Analog Sticks Range Issues
- Multitap Usage
- Default Input Mappings
  - Digital Gamepad on Virtual Port 1
- Settings Reference

## Introduction

WARNING: Save states(and by extension, state rewinding and netplay) and saved games on emulated memory cards do not mix well unless you are extremely careful. For any given game, either use save states or the game's own save system, but not both, lest you may destroy your saved games.

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(note that this recommendation does not apply to any unofficial ports or forks, which may have higher CPU requirements). 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. However, many PSF1 rips won't work properly as they are broken in various ways:

- Contain malformed PS-EXE headers.
- Perform unaligned halfword and word memory accesses.
- Erroneously use load instruction target register as a source register in load delay slots.
- Set volume too high, leading to obnoxious clipping in the emulated SPU.

## 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(and cause confusion if you ever distribute or otherwise refer to these misnamed files).

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

Filename: | Purpose: | SHA-256 Hash:
--- | --- | ---
scph5500.bin | SCPH-5500/v3.0J BIOS image. Required for Japan-region games. | 9c0421858e217805f4abe18698afea8d5aa36ff0727eb8484944e00eb5e7eadb
scph5501.bin | SCPH-5501/v3.0A BIOS image. Required for North America/US-region games. Reportedly the same as the SCPH-7003 BIOS image. | 11052b6499e466bbf0a709b1f9cb6834a9418e66680387912451e971cf8a1fef
scph5502.bin | SCPH-5502/v3.0E BIOS image. Required for Europe-region games. | 1faaa18fa820a0225e488d9f086296b8e6c46df739666093987ff7d8fd352c09

## 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

## Default Input Mappings

### Digital Gamepad on Virtual Port 1

Key: | Emulated Button:
--- | ---
W | Up
S | Down
A | Left
D | Right
Tab | SELECT
Enter | START
Keypad 8 | △
Keypad 2 | x
Keypad 4 | □
Keypad 6 | ○
Keypad 1 | L1
Keypad 7 | L2
Keypad 3 | R1
Keypad 9 | R2

## 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/v3.0E ROM BIOS SHA-256 1faaa18fa820a0225e488d9f086296b8e6c46df739666093987ff7d8fd352c09
psx.bios_jp | string |  | scph5500.bin | Path to the Japan SCPH-5500/v3.0J ROM BIOS SHA-256 9c0421858e217805f4abe18698afea8d5aa36ff0727eb8484944e00eb5e7eadb
psx.bios_na | string |  | scph5501.bin | Path to the North America SCPH-5501/v3.0A ROM BIOS SHA-256 11052b6499e466bbf0a709b1f9cb6834a9418e66680387912451e971cf8a1fef
psx.bios_sanity | boolean | 0 1 | 1 | Enable BIOS ROM image sanity checks. Enables blacklisting of known bad BIOS dumps and known BIOS versions that don't match the region of the hardware being emulated.
psx.cd_sanity | boolean | 0 1 | 1 | Enable CD (image) sanity checks. Sanity checks are only performed on discs detected(via heuristics) to be PS1 discs. The checks primarily consist of ensuring that Q subchannel data is as expected for a typical commercially-released PS1 disc.
psx.correct_aspect | boolean | 0 1 | 1 | Correct aspect ratio. Disabling aspect ratio correction with this setting should be considered a hack. If disabling it to allow for sharper pixels by also separately disabling interpolation(though using Mednafen's "autoipsharper" OpenGL shader is usually a better option), remember to use scale factors that are multiples of 2, or else games that use high-resolution and interlaced modes will have distorted pixels. Disabling aspect ratio correction with this setting will allow for the QuickTime movie recording feature to produce much smaller files using much less CPU time.
psx.dbg_mask | multi-enum | none warning stdout cdc memcard | none | Enable debug messages. none - None warning - Warnings Warnings about games engaging in questionable behavior, or hitting hardware in ways that may not be correctly emulated. stdout - BIOS TTY stdout Transparent snooping of relevant BIOS TTY stdout functions. cdc - CDC memcard - Memory card
psx.h_overscan | boolean | 0 1 | 1 | Show horizontal overscan area.
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 held down for one emulated second to toggle it instead. The specific combination is controlled via the "psx.input.analog_mode_ct.compare" setting, which by default is Select, Start, and all four shoulder buttons.
psx.input.analog_mode_ct.compare | integer | 0x0000 through 0xFFFF | 0x0F09 | Compare value for analog mode combo-button alternate toggle. 0x0001=SELECT 0x0002=L3 0x0004=R3 0x0008=START 0x0010=D-Pad UP 0x0020=D-Pad Right 0x0040=D-Pad Down 0x0080=D-Pad Left 0x0100=L2 0x0200=R2 0x0400=L1 0x0800=R1 0x1000=△ 0x2000=○ 0x4000=x 0x8000=□
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 popnmusic | 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! popnmusic - Pop'n Music Konami's Pop'n Music controller.
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 memory card on virtual port 1.
psx.input.port2 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad popnmusic | 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! popnmusic - Pop'n Music Konami's Pop'n Music controller.
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 memory card on virtual port 2.
psx.input.port3 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad popnmusic | 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! popnmusic - Pop'n Music Konami's Pop'n Music controller.
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 memory card on virtual port 3.
psx.input.port4 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad popnmusic | 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! popnmusic - Pop'n Music Konami's Pop'n Music controller.
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 memory card on virtual port 4.
psx.input.port5 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad popnmusic | 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! popnmusic - Pop'n Music Konami's Pop'n Music controller.
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 memory card on virtual port 5.
psx.input.port6 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad popnmusic | 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! popnmusic - Pop'n Music Konami's Pop'n Music controller.
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 memory card on virtual port 6.
psx.input.port7 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad popnmusic | 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! popnmusic - Pop'n Music Konami's Pop'n Music controller.
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 memory card on virtual port 7.
psx.input.port8 | enum | none gamepad dualshock dualanalog analogjoy mouse negcon guncon justifier dancepad popnmusic | 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! popnmusic - Pop'n Music Konami's Pop'n Music controller.
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 memory card 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 | 5x7 6x9 6x12 6x13 9x18 | 5x7 | Disassembly font size. Note: Setting the font size to larger than the default may cause text overlap in the debugger. 5x7 - 5x7 6x9 - 6x9 6x12 - 6x12 6x13 - 6x13. CJK support. 9x18 - 9x18; CJK support.
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.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(if the "video.deinterlacer" setting is set to "weave", the default) field's lines.
psx.shader | enum | none autoip autoipsharper scale2x sabr ipsharper ipxnoty ipynotx ipxnotysharper ipynotxsharper goat | none | Enable specified OpenGL shader. Obviously, this will only work with the OpenGL "video.driver" setting, and only on cards and OpenGL implementations that support shaders, otherwise you will get a black screen, or Mednafen may display an error message when starting up. When a shader is enabled, the "psx.videoip" setting is ignored. 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". goat - Simple approximation of a color TV CRT look. Intended for fullscreen modes with a vertical resolution of around 1000 to 1500 pixels. Doesn't simulate halation and electron beam energy distribution nuances.
psx.shader.goat.fprog | boolean | 0 1 | 0 | Force interlaced video to be treated as progressive. When disabled, the default, the "video.deinterlacer" setting is effectively ignored with respect to what appears on the screen, unless it's set to "blend" or "blend_rg". When enabled, it may be prudent to disable the scanlines effect controlled by the "psx.shader.goat.slen" setting, or else the scanline effect may look objectionable.
psx.shader.goat.hdiv | real | -2.00 through 2.00 | 0.50 | Constant RGB horizontal divergence.
psx.shader.goat.pat | enum | goatron borg slenderman | goatron | Mask pattern. goatron - Goatron Brightest. borg - Borg Darkest. slenderman - Slenderman Spookiest?
psx.shader.goat.slen | boolean | 0 1 | 1 | Enable scanlines effect.
psx.shader.goat.tp | real | 0.00 through 1.00 | 0.50 | Transparency of otherwise-opaque mask areas.
psx.shader.goat.vdiv | real | -2.00 through 2.00 | 0.50 | Constant RGB vertical divergence.
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, for a sharper image, though the "autoipsharper" shader may provide better results. 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 current 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 setting to have any effect, the "psx.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 current 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 setting to have any effect, the "psx.stretch" setting must be set to "0".