Recommended PS1 Plugins

Emulator

A guide to setting up EPSXE's plugins can be found here: http://forums.ngemu.com/showthread.php?t=85600 just remember that pcsxr uses the same plugins and the info can be used for setting up that one too.

Bios

Don't use simulated BIOS, download and use a real BIOS. Any BIOS file in that package will work.

Video

• 

  Having problems? Try these settings.

  3D: PEOPS OpenGL 1.78 - Comes with PCSX-R. Has an anti-jitter function labeled "GTE accuracy", and allows driver-forced AA. Despite being open source this plugin wasn't updated for years either and has inferior feature set compared to OpenGL2 and gpuBladeSoft and even GSDX. There is also modified and enhanced version of this plugin which can be used only by FPSE.
• Pete's OpenGL2 2.9[1] - More accurate and compatible than OpenGL 1.78. It allows you to set a custom rendering resolution of up to 3x horizontal internal resolution and up to 4x vertical internal resolution for within the fullscreen box, aka window resolution and has support for shaders.Unfortunately this plugin is closed source and wasn't updated for years.
• PeteOpenGL2Tweak[2][3]-PeteOpenGL2Tweak is a PSEMU Pro compatible plug-in that patches PeteOpenGL2 plugin on runtime and adds GTE Accuracy hack.
• 2D: Edgbla's gpuBladeSoft 1.42a[4][5] - Very accurate and has support for up to 6x internal resolution , shaders and Bilinear Filtering but renders everything on CPU and is single-threaded so can be very demanding at high resolutions. Fairly buggy past native rendering resolution as well, with texture misalignment issues and whatnot. Its same as Pete's OpenGL2 closed source and wasn't updated for years but there is some hope author will realese new version[6]
• GSDX: GSDX development is primarily focused on PCSX2 but can also be used in PSX mode. Its limited to software rendering and has inferior feature set compared to PCSX2 mode but its notable for being only open source PSX plugin which can increase internal resolution. So there is hope for improvement if PCSX2 developers ever decide to emulate PSX in PCSX2.
• Modified PEOp.S. Soft GPU Plugin with Zenju's xBRZ filter.[7][8][9]
• New PSX GPU Plugin AmiDog[10][11] its again closed source.
• Asmodean's PSXFX shader pack 1.30 Final has more antialiasing shaders than 1.5b [12][13][14]

Audio

• P.E.Op.S 1.10 beta - Recommended for most games and setups (in order to use turbo, the mode needs to be set to 2: Async Simple; it will not work with 3 or 4).
• Eternal SPU 1.5 - Useful for the few games/PCs that have issues with P.EOp.S.
• spuPeopsSound (XAudio2 fix for PEC) v1.10[15][16][17]

Input

• LilyPad latest SVN (The plugin comes with PCSX2, go into the plugin folder and pull out the file that says lilypad.dll and put it in the emulator your plan on using's plugin folder). Set keyboard input to raw also, otherwise you wont be able to use hotkeys.
• Pokopom Xinput Pad Plugin

Use the following if you're using a PS3 controller:

• LilyPad-SCP (Comes with the SCP driver, which is a very nice alternative to MalwareinJoin)
• LilyPad-MotioninJoy (if you've a DS3 and are using MiJ)

This pack has preconfigured versions of both the regular and SCP versions of lilypad:

http://www.mediafire.com/?7rtn99pw7a5v2hv

Plugin-less Alternatives

These PS1 emulators do not use plugins, in case you want something that just werks and is more accurate.

• XEBRA
• Mednafen PSX
• RetroArch (Mednafen PSX)