Where can I get PPSSPP for iOS?

You need a jailbroken iOS device, running iOS 6. See the Downloads page for more info.

What is the JIT?

To emulate advanced systems like the PSP fast, the emulator needs to translate the machine code language of the PSP to the machine code language of your PC or mobile device at runtime. This is done with a "Just-In-Time recompiler" or JIT, also known as a Dynarec. PPSSPP has JITs for x86 and ARM.

For a JIT to function, an app needs to have the ability to generate machine code at runtime. This is allowed on Windows, Mac, Linux and Android, while it is completely disallowed on non-jailbroken iOS and on App Store Mac apps, and on Windows Phone 8.

Why is PPSSPP so fast?

You're probably a Windows user. Because x86 CPUs are damn fast, PC GPU drivers are good, we have a fairly advanced x86 JIT, it's written in C++ and I rock.

Why is PPSSPP so slow?

You probably run PPSSPP on a mobile device. The ARM JIT is basic and needs improvement, and these devices simply are not very strong yet, no matter what marketing tells you, or their graphics drivers SUCK. An example of the latter would be the Nexus S.

Why is the emulator called PPSSPP?

Why not?

The Windows version doesn't start!

That's not a question. Anyway, you may need to install the VC2010 redist (some DLL files). Also, if it still doesn't work, try installing the latest DirectX and OpenGL drivers for your graphics card.

Where can I get games for PPSSPP?

To legally turn your PSP games into .ISO files, you need to install "custom firmware" on your PSP and run some program to dump UMD discs or digital downloads into files. Tutorials for this can be found around the web. There are also tools to turn ISO files into CSO (compressed ISO) files to save space.

Can I use my gamepad to control PPSSPP?

PPSSPP has built-in XInput support on Windows so it will "just work" with any Xbox 360 pad that you plug into your PC. On Android the gamepad situation is not very good yet, the Xperia Play buttons will work but not the touch sticks, for example.

What are the PC CPU and GPU requirements?

Any reasonably modern CPU will be just fine, and any GPU that can handle OpenGL 2.1 should have no issues. You should make sure to install the latest graphics drivers available though. Windows XP or later is required, Windows 7 or 8 is recommended.

PPSSPP is awesome! How do I donate to the project?

Buy PPSSPP Gold for Android! It's the same as the regular version functionally, but by buying it you support the development of PPSSPP.

Alternatively, feel free to toss a bitcoin or two to 13KFhiBiFDjQAfXrBn3z5VgNKULP6DzdHb :)

Where are the "pre-0.8" versions everyone is talking about in the forum?

Here.

What are CSO files?

CSO are compressed ISO files that can be played directly, decompressing on the fly. Very useful to save space on your Android device, for example. There are a large number of programs around the web that can create CSO files from ISOs, just Google for it.

I've managed to fix a bug, how do I get the fix into PPSSPP?

If you know GitHub, you know the drill - just make a pull request with the changes, in a clone of the PPSSPP repository. If you don't know Git(Hub), feel free to ask for help.

My favorite game doesn't work in PPSSPP. What can I do?

You can either help out with fixing it, or wait until someone does.

The Windows version won't run, missing XInput.dll

Install DirectX.

Where's the MacOSX build?

Nobody has volunteered to prepare and package one yet. Contact me if you're interested.