There's *no* reason anymore to not having this tool on HD, as it does virtually *everything* possible with every flavour of ROM Image for all the consoles around (just look at the readme and you'll know that I don't exaggerate). Especially if you have an old 16-Bit copier for SNES or Megadrive/Genesis or a copier for any non-standart system (like PCE, Lynx, SMS) this util is extremely useful.
GET IT NOW OR DIE!!! (just kidding ;) )
-- Matthias
P.S.
Umh, forgot to mention the URL: http://ucon64.sourceforge.net/