> > Date: Sat, 20 Mar 2021 16:21:44 -0400 > From: Kyle Owen <[email protected]> > Subject: Re: DECtape ancestry > > What systems took advantage of the bidirectional nature? > > Kyle >
ADSS on the PDP-9 does an interleave of 6 when reading/writing to the DECtape. If it runs off the end it reverses direction and keeps going. I have seen some library files take three passes of the DECtape to fully search. -- Michael Thompson
