On 2019-08-02 08:03 AM, Russell Reiter via talk wrote: > > > - 9-track mag tape: 10 years > > > Would this form factor be sized like commercial 8 track audio tape > with an extra track squeezed in for sync?
No, it was 1/2" tape on an open reel. And it was 9 or 7 actual tracks, with one track used for the parity bit. They used odd parity, to guaranty at least one "1" bit, to provide clocking for the NRZI encoding used. https://en.wikipedia.org/wiki/Non-return-to-zero --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk