INSTRUCTION :
Store all your PSP homebrew apps like this:

C:\PSP\ms0\PSP\GAME\[appfolder]

Then run the emulator .exe. If you have no apps the \GAME\ folder emulator would just hang on startup.

They keys for the emulator are :
1. The arrow keys for up down left right
2. W A S D = ∆   o x

Games we tested :
1. Hello World
2. Tetris JP
3. PSP Calc