recovering cartridge tapes (was: Tek fiches found!)
ard at p850ug1.demon.co.uk
Thu Jul 22 12:38:25 CDT 2010
> In article <4C46A57E.15148.5E8BCB at cclist.sydex.com>,
> "Chuck Guzis" <cclist at sydex.com> writes:
> > [...] Almost all cartridge DC-
> > style tapes are recorded "serpentine" style--i.e. start in one
> > direction, shift the head, reverse, etc...
> This is news to me. Every cartridge tape I've ever used recorded data
> to the end and then stopped. I don't recall seeing any mechanism for
Many QIC types (including DC300s) used serpentine recording. I don't
think the smalelr tapes used, for example, in the HP terminals, HP 98x5,
HP80-seires, DEC TU58, etc did. But later QIC drives using similar tapes
probably did use serpentine recording.
> shifting the tape head in HP264x terminals with DC100 cartridges nor
> in Tektronix 4051 terminals with DC300 cartridges.
> > So the spooling scheme had better work. I'm not aware of any 32-
> > channel (for example) QIC heads.
> QIC tapes are something different from DC300 and DC100 tapes.
Eh? DC300 tapes were used for QIC11, etc recording .And it was serpentine.
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