: Unlike many cartridge-based "fast loaders" that only speed up program (.PRG) files, JiffyDOS accelerates the loading and saving of Sequential (SEQ), Relative (REL), and User (USR) files. Key Features and Commands
: Cycles through active drive device numbers (e.g., from 8 to 9). jiffydos-c64.bin
JiffyDOS works by replacing the communication routines between the C64 and its disk drives with more efficient serial protocols. : Unlike many cartridge-based "fast loaders" that only
: On a standard 1541 drive, loading speeds increase by up to 10 times . For newer devices like the SD2IEC or 1581, speeds can reach up to 20 times the original rate. : On a standard 1541 drive, loading speeds
: Includes a built-in utility for interactive file copying between drives or RAM expansion units. Installation and Usage
The jiffydos-c64.bin file is typically used in one of three ways: How to Install a JiffyDOS into a Commodore 64
: The @$ command displays the disk directory without erasing the BASIC program currently in memory. Shortcuts : F1 : Quickly displays the directory.