If you are looking for PlayStation 1 (PSX) ROMs format—specifically optimized for use on Sony PSP and PS Vita handhelds—the following archives offer reputable "repacked" collections. Top PBP Archive Collections Cylum's PlayStation ROM Collection
Recommended on disk format for psx roms? · Issue #5067 - GitHub pbp (playstation binary package) ps1 pbp roms archive repack
Download PSX2PSP: This is the classic utility for creating EBOOT.PBP files. If you are looking for PlayStation 1 (PSX)
If you already have a repack archive or are building one, here are a few tips: here are a few tips: