JiffyDOS

JiffyDOS is a Disk Operating System (DOS) enhancement which gives your C-64 or C-128 the disk access speed it has always needed.

Software · by Creative Micro Designs · go4retro.com

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What JiffyDOS’s own pages say

What it says it doesJiffyDOS is a Disk Operating System (DOS) enhancement which gives your C-64 or C-128 the disk access speed it has always needed. go4retro.com
PlatformsC-128, C-64 go4retro.com
IntegrationsuIEC go4retro.com

Each value is a quote AirStack found on the product’s own pages, read 2026-11-05. A missing field means AirStack has not found it on its pages.