Amiga: Kickstart Roms Archive.org ((free))

: Different software requires specific ROM versions. For instance, most classic games are optimized for Kickstart 1.3 (A500), while later multimedia software might require Kickstart 3.1 (A1200/A4000).

, these ROM files are the "missing piece" needed to recreate a functional Amiga environment on a PC or Mac. Ease of Access amiga kickstart roms archive.org