Joost van de Griek wrote:
No, not the same. C64, like pretty much every other
1980's home
computer, used plain (Type I, ferro) audio cassettes; but I distinctly
remember seeing tape streamer tapes listed in catalogues with the same
mechanical characteristics as audio cassettes, bar for a cutout in the
center of the long, narrower side of the housing. This presumably to
prevent regular audio cassettes from being used in the tape drives. I'd
assume they had at least different magnetic properties, if not minor
mechanical differences, too.
With my Sinclair, I've been using a midrange home stereo tape deck to
store data. The deck has bias settings for ferrous, chromium dioxide
and metal tapes. I've had distinctly better luck with data lifetimes on
metal cassettes.
Peace... Sridhar