The primary reason to use this ROM is its capability. Standard C64 disk operations are notoriously slow; JiffyDOS increases data transfer speeds by up to 15 times when paired with a JiffyDOS-enabled drive (or emulator).
A 44-year-old computer still receiving firmwares? That is the magic of the C64 scene. The jiffydos-c64.bin file represents the pinnacle of 8-bit disk speed optimization—a masterwork of efficient 6502 assembly and creative serial protocol hacking. jiffydos-c64.bin
Let’s pop the hood and look at why this specific binary file is a staple in the community, how it works, and why you might want to burn it to an EPROM today. The primary reason to use this ROM is its capability
is not a game or a piece of software you run like a typical application; it is a system ROM replacement (specifically, the Kernal ROM) for the Commodore 64. That is the magic of the C64 scene