... PSP and you're able to run homebrew, this is how to get UAE working on it.
What you need to run it is a Sony PSP with either one of those:
a 1.5 firmware version running
a 2.0 - 2.5 firm...
What you need to emulate an Amiga
To emulate the Amiga you will need the following three items.
1, An Amiga emulator
2, Kickstart rom images
3, Amiga Software as ADF files.