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JiffyDOS

JiffyDOS is a Disk Operating System (DOS) enhancement which gives your Commodore 64/128 the disk access speed it has always needed. A chip-for-chip replacement for the Kernal ROM in your computer and the DOS ROM in your disk drive(s), JiffyDOS achieves levels of performance and compatibility unmatched by other disk speed-enhancement products.

Outstanding speed, solid compatibility with virtually all hardware and software, and a new set of desperately-needed commands and features, gives your system a new lease on life and the power to compete with today's newer, more-expensive machines. You can also read more on

JiffyDOS can and should legally be bought from distributors listed on jiffydos.com 1

Manuals

Installation guides

Disassembly

This document is a dump of JiffyDOS version 6.01. The parts concerning JiffyDOS have been commented by Magnus Nyman, also known as Harlekin/FairLight.

  1. Please note that jiffydos.com and RETRO Innovation has kindly requested that these documents not be rehosted. However, they are available through other sources.

    In the context of this C*Base Reference Guide, our sole intention is to preserve them for informational purposes and ensure they remain accessible as a reference. Thank you for your understanding. ↩