For the Commodore Amiga 1200, a "ROMs pack" typically refers to one of two things: the system firmware (Kickstart ROMs) required to run the computer or an emulator, or collections of game files (ADF or WHDLoad) often bundled for convenience. Kickstart ROMs (Firmware)
To the uninitiated, a "ROM pack" sounds like a collection of video games. In the Amiga world, it is something fundamentally different.
Because the A1200 uses the AGA chipset, it can play "enhanced" versions of games that feature more colors and better performance than standard A500 titles. WHDLoad Packs: