JiffyDOS is an alternative DISK ROM for Commodore based computers and drives that aims to improve speed and reliability

Sample questions:

  • Can I use a JiffyDOS based drive on an unmodified C64/C128?
  • How does the JiffyDOS achieve speed improvement without any actual hardware changes?
  • Will I gain anything if only my computer OR drive (but not the other) has JiffyDOS?