On 11/12/15 7:27 AM, Jon Elson wrote:
LINCtape is essentially identical to DECtape. I think the directory format is different, but I think the block format is the same. I think the tapes are wound in reverse order and the order of increasing block numbers is reversed.
Actually the block format is different. "Obverse Compliment" encoding was created for DECtape. LINCtape blocks aren't bidirectional.
The actual spec for the 3M tape can be found at http://bitsavers.org/pdf/dec/dectape/3M_DECtape_Spec_nov66.pdf The protective overlay is .04 mils.
