Configuration & Trobleshooting

In this section you will find the how to setup instructions, information about the config options and detailed information about the different options on preferences as well as a FAQ with the common questions.

How to set up the emulator


The emulator requires a previous configuration before starting to play. It includes to get the PSX Bios and getting the games in the some of the formats supported by the emulator.
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Configure & Tunning options

Screen and Video configuration. In this part the video and screen possible options are explained. Continue Reading »


Sound configuration. This section explains the different options avalaible on the sound emulation. Continue Reading »


Gamepad configuration. In this part it is explained how to configure the touchscreen and how to use external gamepads. Continue Reading »


Memcards configuration. This section explains how to use the memcards and savestates. Continue Reading »


CPU and Misc configuration. In this part the rest of possible configuration options are explained. Continue Reading »


On Gameplay options. In this part it is explained the on gameplay available options. Continue Reading »



Frequently Asked Questions

  • Q: Iso or rom, what does it mean?
    A: PSX games are stored on cdrom discs, and a dump of a cdrom disc is currently called "iso". In other platforms (Nintendo64 for example), the games are stored in memory ROM in a cartridge, so it is commonly called rom. We will use rom or iso to refer to a game dump.
  • Q:I got black screen when running the game, what is the problem?
    A: Some games requires somes seconds to initialize. If you are using the hardware renderer, the number of incompatible games is really really low (1%), it is very likely a problem with the rom format or dump (it is incomplete, corrupted or non compatible format - PSX games are usually 600-700Mb) check psxdatacenter.com to know if this game is compatible, and if it is in the compatible list then get a different dump from this game
  • Q:When I run the game, it says "system.cnf" not found.
    A: PSX games are disc dumps, which must contain a file system, when the emulator does not find the filesystem this message is shown. It means that the game is incomplete, in non compatible format or corrupted (we recommend to use 7zipper to uncompress). Remember PSX games are usually 600-700Mb. Get a different dump of the game.
  • Q:There is repeated or jerky sound.
    A: ePSXe uses only sync spu emulation, it is done to get sound/video sync and highest compatibility. So you will need 50/60 frames per second (100% speed) to get proper sound.
  • Q:How can I hide the on screen buttons?
    A: Preferences->TouchScreen->Hide/Show Gamepad
  • Q:The buttons are too small or big, can I edit the gamepad skin?
    A: Yes Preferences->TouchScreen->Edit Gamepad
  • Q:Choosing analog mode the touchscreen gamepad has just the left stick, where is the right stick?
    A: By default it is disabled, you can edit the touchscreen gamepad and enabling it on Preferences->TouchScreen->Edit Gamepad
  • Q:Some games don't work or have graphics error using OpenGL Plugin.
    A: OpenGL plugin is limited in smartphone GPUs (some games or graphics effects simply doesn't work or will be very slow), you can fix some graphics problems using the OpenGL toolbar
  • Q:What are the iso formats supported?
    A: bin/cue, img/ccd, multi-bin/cue, mds/mdf (v1), pbp, cdi, nrg, ecm and iso. We recommend bin/cue, img/ccd or pbp.
  • Q:Why can't it run compressed isos?
    A: Most common compressed formats such as zip, 7z and rar can't provide random file access to the data which is required given the large size so uncompressing on the fly is not possible. If you need to compress your games, the best format is PBP. Recent SD cards can hold more than 100 games without compression.