Recommended PS1 plugins

Emulator

Stop using ePSXe and use PCSX-R.

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.
• OpenGL 2.9 - Use if you run into problems with 1.78, or want to use shaders. It allows you to set a custom rendering resolution for within the fullscreen box, aka window resolution.
• 2D: gpuBladeSoft 1.41 - Very accurate and has a lot of options for enhancements and shaders, but renders everything on CPU so can be very demanding at high resolutions. Fairly buggy past native rendering resolution as well, with texture misalignment issues and whatnot.

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.

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)

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)