Eboot.PBP (Executable for PSP)

PBP is the executable format for the PSP. It is used for UMD games and ISO files have one inside the archive (and lotta data files). Firmware updates, homebrew and downgraders also come in eboot.pbp format.

Don't confuse PBP and BHP or PHP or anything like that. They're totally different things!

PS One (NOT PSX)

PS One (NOT PSX [[ISO]]]'s can also be played on PSP, this is mostly done by pops which turns the ISO into an eboot. The other option is to use an emulator, in which the emulator is a eboot for PSP!