... is illegal to distribute the roms freely.
A full set of Amiga kickstart roms can be purchased as part of the Amiga emulation package, Amiga Forever. These are officially licensed roms, and more...
Before we begin
If you own a 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
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.